DATAMONGO-755 - Prepare next development iteration.

DATAMONGO-755 - Release version 1.2.4.RELEASE.
DATAMONGO-755 - Prepare 1.2.4.RELEASE.
2013-09-30 05:01:30 -07:00 · 2013-09-30 05:01:28 -07:00 · 2013-09-30 13:40:36 +02:00 · 2013-08-22 18:22:00 +02:00 · 2013-08-13 12:25:59 +02:00 · 2013-08-12 17:39:42 +02:00
299 changed files with 13309 additions and 5883 deletions
--- a/README.md
+++ b/README.md
@@ -1,16 +1,22 @@
-Spring Data - Document
+Spring Data MongoDB
 ======================

 The primary goal of the [Spring Data](http://www.springsource.org/spring-data) project is to make it easier to build Spring-powered applications that use new data access technologies such as non-relational databases, map-reduce frameworks, and cloud based data services.
-As the name implies, the **Document** modules provides integration with document databases such as [MongoDB](http://www.mongodb.org/) and [CouchDB](http://couchdb.apache.org/).
+
+The Spring Data MongoDB aims to provide a familiar and consistent Spring-based programming model for for new datastores while retaining store-specific features and capabilities. The Spring Data MongoDB project provides integration with the MongoDB document database. Key functional areas of Spring Data MongoDB are a POJO centric model for interacting with a MongoDB DBCollection and easily writing a Repository style data access layer

 Getting Help
 ------------

-At this point your best bet is to look at the Look at the [JavaDocs](http://static.springsource.org/spring-data/data-document/docs/1.0.0.BUILD-SNAPSHOT/spring-data-mongodb/apidocs/) for MongoDB integration and corresponding and source code. For more detailed questions, use the [forum](http://forum.springsource.org/forumdisplay.php?f=80). If you are new to Spring as well as to Spring Data, look for information about [Spring projects](http://www.springsource.org/projects). 
+For a comprehensive treatmet of all the Spring Data MongoDB features, please refer to the The [User Guide](http://static.springsource.org/spring-data/data-mongodb/docs/current/reference/html/) 

-The [User Guide](http://static.springsource.org/spring-data/data-document/docs/1.0.0.BUILD-SNAPSHOT/reference/html/) (A work in progress). 
+The [JavaDocs](http://static.springsource.org/spring-data/data-mongodb/docs/current/api/) have extensive comments in them as well.

+The home page of [Spring Data MongoDB](http://www.springsource.org/spring-data/mongodb) contains links to articles and other resources.
+
+For more detailed questions, use the [forum](http://forum.springsource.org/forumdisplay.php?f=80). 
+
+If you are new to Spring as well as to Spring Data, look for information about [Spring projects](http://www.springsource.org/projects). 


 Quick Start
@@ -23,19 +29,13 @@ For those in a hurry:

 * Download the jar through Maven:

-      <dependency>
-        <groupId>org.springframework.data</groupId>
-        <artifactId>spring-data-mongodb</artifactId>
-        <version>1.0.0.BUILD-SNAPSHOT</version>
-      </dependency> 
-
-
-      <repository>
-        <id>spring-maven-snapshot</id>
-        <snapshots><enabled>true</enabled></snapshots>
-        <name>Springframework Maven SNAPSHOT Repository</name>
-        <url>http://maven.springframework.org/snapshot</url>
-      </repository> 
+```xml
+<dependency>
+  <groupId>org.springframework.data</groupId>
+  <artifactId>spring-data-mongodb</artifactId>
+  <version>1.2.3.RELEASE</version>
+</dependency>
+```

 ### MongoTemplate
 MongoTemplate is the central support class for Mongo database operations.  It provides
@@ -48,98 +48,98 @@ Future plans are to support optional logging and/or exception throwing based on

 ### Easy Data Repository generation

-To simplify the creation of Data Repositories a generic Repository interface and default implementation is provided.  Furthermore, Spring will automatically create a Repository implementation for you that adds implementations of finder methods you specify on an interface.  
+To simplify the creation of data repositories a generic `Repository` interface and default implementation is provided.  Furthermore, Spring will automatically create a Repository implementation for you that adds implementations of finder methods you specify on an interface.  

 The Repository interface is

-        public interface Repository<T, ID extends Serializable> { 
+```java
+public interface Repository<T, ID extends Serializable> { 

-          T save(T entity);
+  T save(T entity);

-          List<T> save(Iterable<? extends T> entities);
+  List<T> save(Iterable<? extends T> entities);

-          T findById(ID id);
+  T findById(ID id);

-          boolean exists(ID id);
+  boolean exists(ID id);

-          List<T> findAll();
+  List<T> findAll();

-          Long count();
+  Long count();

-          void delete(T entity);
+  void delete(T entity);

-          void delete(Iterable<? extends T> entities);
+  void delete(Iterable<? extends T> entities);

-          void deleteAll();
-        }
+  void deleteAll();
+}
+```


-The MongoRepository extends Repository and will in future add more Mongo specific methods.
+The `MongoRepository` extends `Repository` and will in future add more Mongo specific methods.

-    public interface MongoRepository<T, ID extends Serializable> extends
-        Repository<T, ID> {
-    }
+```java
+public interface MongoRepository<T, ID extends Serializable> extends Repository<T, ID> {
+}
+```

-SimpleMongoRepository is the out of the box implementation of the MongoRepository you can use for basid CRUD operations.  
+`SimpleMongoRepository` is the out of the box implementation of the `MongoRepository` you can use for basid CRUD operations.  

-To go beyond basic CRUD, extend the MongoRepository interface and supply your own finder methods that follow simple naming conventions such that they can be easily converted into queries.  
+To go beyond basic CRUD, extend the `MongoRepository` interface and supply your own finder methods that follow simple naming conventions such that they can be easily converted into queries.  

-For example, given a Person class with first and last name properties, a PersonRepository interface that can query for Person by last name and when the first name matches a regular expression is shown below
+For example, given a `Person` class with first and last name properties, a `PersonRepository` interface that can query for `Person` by last name and when the first name matches a regular expression is shown below

-    public interface PersonRepository extends MongoRepository<Person, Long> {
+```java
+public interface PersonRepository extends MongoRepository<Person, Long> {

-      List<Person> findByLastname(String lastname);
+  List<Person> findByLastname(String lastname);

-      List<Person> findByFirstnameLike(String firstname);
-    }
+  List<Person> findByFirstnameLike(String firstname);
+}
+```

-You can have Spring automatically generate the implemention as shown below
+You can have Spring automatically create a proxy for the interface as shown below:

-        <bean id="template" class="org.springframework.data.document.mongodb.MongoTemplate">
-                <constructor-arg>
-                        <bean class="com.mongodb.Mongo">
-                                <constructor-arg value="localhost" />
-                                <constructor-arg value="27017" />
-                        </bean>
-                </constructor-arg>
-                <constructor-arg value="database" />
-                <property name="defaultCollectionName" value="springdata" />
-        </bean>
+```xml
+<bean id="template" class="org.springframework.data.document.mongodb.MongoTemplate">
+        <constructor-arg>
+                <bean class="com.mongodb.Mongo">
+                        <constructor-arg value="localhost" />
+                        <constructor-arg value="27017" />
+                </bean>
+        </constructor-arg>
+        <constructor-arg value="database" />
+        <property name="defaultCollectionName" value="springdata" />
+</bean>

-        <bean class="org.springframework.data.document.mongodb.repository.MongoRepositoryFactoryBean">
-                <property name="template" ref="template" />
-                <property name="repositoryInterface" value="org.springframework.data.document.mongodb.repository.PersonRepository" />
-        </bean>
+<mongo:repositories base-package="com.acme.repository" />
+```

-This will register an object in the container named PersonRepository.  You can use it as shown below
+This will find the repository interface and register a proxy object in the container.  You can use it as shown below:

-     @Service
-     public class MyService {
+``java
+@Service
+public class MyService {

-        @Autowired
-        PersonRepository repository;
+  @Autowired
+  private final PersonRepository repository;

+  public void doWork() {

-        public void doWork() {
+     repository.deleteAll();

-           repository.deleteAll();
+     Person person = new Person();
+     person.setFirstname("Oliver");
+     person.setLastname("Gierke");
+     person = repository.save(person);

-           Person person = new Person();
-           person.setFirstname("Oliver");
-           person.setLastname("Gierke");
-           person = repository.save(person);
+     List<Person> lastNameResults = repository.findByLastname("Gierke");

-           List<Person> lastNameResults = repository.findByLastname("Gierke");
+     List<Person> firstNameResults = repository.findByFirstnameLike("Oli*");

-           List<Person> firstNameResults = repository.findByFirstnameLike("Oli*");
-
-       }
-    }
-
-
-## CouchDB
-
-TBD
+ }
+}
+```


 Contributing to Spring Data
--- a/etc/formatting.xml
+++ b/etc/formatting.xml
@@ -0,0 +1,291 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<profiles version="12">
+<profile kind="CodeFormatterProfile" name="Spring Data" version="12">
+<setting id="org.eclipse.jdt.core.formatter.comment.insert_new_line_before_root_tags" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.disabling_tag" value="@formatter:off"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_annotation" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_type_parameters" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_type_declaration" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_type_arguments" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.brace_position_for_anonymous_type_declaration" value="end_of_line"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_case" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_brace_in_array_initializer" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.comment.new_lines_at_block_boundaries" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_annotation_declaration" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_closing_brace_in_array_initializer" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_annotation" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.blank_lines_before_field" value="0"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_while" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.use_on_off_tags" value="false"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_annotation_type_member_declaration" value="do not insert"/>
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+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_prefix_operator" value="do not insert"/>
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+<setting id="org.eclipse.jdt.core.formatter.alignment_for_multiple_fields" value="16"/>
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+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_bracket_in_array_type_reference" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_opening_brace_in_array_initializer" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_closing_brace_in_block" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_bracket_in_array_reference" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_enum_constant" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_angle_bracket_in_type_arguments" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_constructor_declaration" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_constructor_declaration_throws" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_if" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.comment.clear_blank_lines_in_javadoc_comment" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_throws_clause_in_constructor_declaration" value="16"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_assignment_operator" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_assignment_operator" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.indent_empty_lines" value="false"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_synchronized" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_closing_paren_in_cast" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_method_declaration_parameters" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.brace_position_for_block_in_case" value="end_of_line"/>
+<setting id="org.eclipse.jdt.core.formatter.number_of_empty_lines_to_preserve" value="1"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_method_declaration" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_catch" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_constructor_declaration" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_method_invocation" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_bracket_in_array_reference" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_qualified_allocation_expression" value="16"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_and_in_type_parameter" value="insert"/>
+<setting id="org.eclipse.jdt.core.compiler.compliance" value="1.7"/>
+<setting id="org.eclipse.jdt.core.formatter.continuation_indentation_for_array_initializer" value="2"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_brackets_in_array_allocation_expression" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_at_in_annotation_type_declaration" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_allocation_expression" value="16"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_cast" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_unary_operator" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_angle_bracket_in_parameterized_type_reference" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_anonymous_type_declaration" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.keep_empty_array_initializer_on_one_line" value="false"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_enum_declaration" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.keep_imple_if_on_one_line" value="false"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_constructor_declaration_parameters" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_closing_angle_bracket_in_type_parameters" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_at_end_of_file_if_missing" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_for" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_labeled_statement" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_parameterized_type_reference" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_superinterfaces_in_type_declaration" value="16"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_binary_expression" value="16"/>
+<setting id="org.eclipse.jdt.core.formatter.brace_position_for_enum_declaration" value="end_of_line"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_type" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_while" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode" value="enabled"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_try" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.put_empty_statement_on_new_line" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_label" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_parameter" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_angle_bracket_in_type_parameters" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_method_invocation" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_while_in_do_statement" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_enum_constant" value="16"/>
+<setting id="org.eclipse.jdt.core.formatter.comment.format_javadoc_comments" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.comment.line_length" value="120"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_package" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.blank_lines_between_import_groups" value="1"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_enum_constant_arguments" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_semicolon" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.brace_position_for_constructor_declaration" value="end_of_line"/>
+<setting id="org.eclipse.jdt.core.formatter.number_of_blank_lines_at_beginning_of_method_body" value="0"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_conditional" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_type_header" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_annotation_type_member_declaration" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.wrap_before_binary_operator" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_enum_declaration_header" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.blank_lines_between_type_declarations" value="1"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_synchronized" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.indent_statements_compare_to_block" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_superinterfaces_in_enum_declaration" value="16"/>
+<setting id="org.eclipse.jdt.core.formatter.join_lines_in_comments" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_question_in_conditional" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_multiple_field_declarations" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_compact_if" value="16"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_for_inits" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.indent_switchstatements_compare_to_cases" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_array_initializer" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_default" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_and_in_type_parameter" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_constructor_declaration" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.blank_lines_before_imports" value="1"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_assert" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.comment.format_html" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_throws_clause_in_method_declaration" value="16"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_angle_bracket_in_type_parameters" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_bracket_in_array_allocation_expression" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_anonymous_type_declaration" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_conditional" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_angle_bracket_in_parameterized_type_reference" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_for" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_postfix_operator" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.comment.format_source_code" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_synchronized" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_allocation_expression" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_constructor_declaration_throws" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_parameters_in_method_declaration" value="16"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_brace_in_array_initializer" value="insert"/>
+<setting id="org.eclipse.jdt.core.compiler.codegen.targetPlatform" value="1.7"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_resources_in_try" value="80"/>
+<setting id="org.eclipse.jdt.core.formatter.use_tabs_only_for_leading_indentations" value="false"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_annotation" value="16"/>
+<setting id="org.eclipse.jdt.core.formatter.comment.format_header" value="false"/>
+<setting id="org.eclipse.jdt.core.formatter.comment.format_block_comments" value="false"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_enum_constant" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.alignment_for_enum_constants" value="0"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_block" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_annotation_declaration_header" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_parenthesized_expression" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_parenthesized_expression" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_catch" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_multiple_local_declarations" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_switch" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_for_increments" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_method_invocation" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_assert" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.brace_position_for_type_declaration" value="end_of_line"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_array_initializer" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_braces_in_array_initializer" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_method_declaration" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_semicolon_in_for" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_catch" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_angle_bracket_in_parameterized_type_reference" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_multiple_field_declarations" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_annotation" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_parameterized_type_reference" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_method_invocation_arguments" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.comment.new_lines_at_javadoc_boundaries" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.blank_lines_after_imports" value="1"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_multiple_local_declarations" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_enum_constant_header" value="true"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_after_semicolon_in_for" value="insert"/>
+<setting id="org.eclipse.jdt.core.formatter.never_indent_line_comments_on_first_column" value="false"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_semicolon_in_try_resources" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_angle_bracket_in_type_arguments" value="do not insert"/>
+<setting id="org.eclipse.jdt.core.formatter.never_indent_block_comments_on_first_column" value="false"/>
+<setting id="org.eclipse.jdt.core.formatter.keep_then_statement_on_same_line" value="false"/>
+</profile>
+</profiles>
--- a/pom.xml
+++ b/pom.xml
@@ -1,301 +1,99 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>org.springframework.data</groupId>
-  <artifactId>spring-data-mongodb-dist</artifactId>
-  <name>Spring Data MongoDB Distribution</name>
-  <description>Spring Data project for MongoDB</description>
-  <url>http://www.springsource.org/spring-data/mongodb</url>
-  <version>1.0.2.RELEASE</version>
-  <packaging>pom</packaging>
-  <modules>
-    <module>spring-data-mongodb</module>
-    <module>spring-data-mongodb-cross-store</module>
-    <module>spring-data-mongodb-log4j</module>
-    <module>spring-data-mongodb-parent</module>
-  </modules>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

-   <developers>
-    <developer>
-      <id>ogierke</id>
-      <name>Oliver Gierke</name>
-      <email>ogierke at vmware.com</email>
-      <organization>SpringSource</organization>
-      <organizationUrl>http://www.springsource.com</organizationUrl>
-      <roles>
-        <role>Project lead</role>
-      </roles>
-      <timezone>+1</timezone>
-    </developer>
-    <developer>
-      <id>trisberg</id>
-      <name>Thomas Risberg</name>
-      <email>trisberg at vmware.com</email>
-      <organization>SpringSource</organization>
-      <organizationUrl>http://www.SpringSource.com</organizationUrl>
-      <roles>
-        <role>Project Admin</role>
-        <role>Developer</role>
-      </roles>
-      <timezone>-5</timezone>
-    </developer>
-    <developer>
-      <id>mpollack</id>
-      <name>Mark Pollack</name>
-      <email>mpollack at vmware.com</email>
-      <organization>SpringSource</organization>
-      <organizationUrl>http://www.SpringSource.com</organizationUrl>
-      <roles>
-        <role>Project Admin</role>
-        <role>Developer</role>
-      </roles>
-      <timezone>-5</timezone>
-    </developer>
-    <developer>
-      <id>jbrisbin</id>
-      <name>Jon Brisbin</name>
-      <email>jbrisbin at vmware.com</email>
-      <organization>SpringSource</organization>
-      <organizationUrl>http://www.springsource.com</organizationUrl>
-      <roles>
-        <role>Developer</role>
-      </roles>
-      <timezone>-6</timezone>
-    </developer>
-  </developers>
+	<modelVersion>4.0.0</modelVersion>
+	
+	<groupId>org.springframework.data</groupId>
+	<artifactId>spring-data-mongodb-parent</artifactId>
+	<version>1.2.5.BUILD-SNAPSHOT</version>
+	<packaging>pom</packaging>

-  <licenses>
-    <license>
-      <name>Apache License, Version 2.0</name>
-      <url>http://www.apache.org/licenses/LICENSE-2.0</url>
-      <comments>
-        Copyright 2010 the original author or authors.
+	<name>Spring Data MongoDB</name>
+	<description>MongoDB support for Spring Data</description>
+	<url>http://www.springsource.org/spring-data/mongodb</url>

-        Licensed under the Apache License, Version 2.0 (the "License");
-        you may not use this file except in compliance with the License.
-        You may obtain a copy of the License at
+	<parent>
+		<groupId>org.springframework.data.build</groupId>
+		<artifactId>spring-data-parent</artifactId>
+		<version>1.0.5.RELEASE</version>
+		<relativePath>../spring-data-build/parent/pom.xml</relativePath>
+	</parent>
+	
+	<modules>
+		<module>spring-data-mongodb</module>
+		<module>spring-data-mongodb-cross-store</module>
+		<module>spring-data-mongodb-log4j</module>
+		<module>spring-data-mongodb-distribution</module>
+	</modules>

-        http://www.apache.org/licenses/LICENSE-2.0
+	<properties>
+		<project.type>multi</project.type>
+		<dist.id>spring-data-mongodb</dist.id>
+		<springdata.commons>1.5.3.RELEASE</springdata.commons>
+		<mongo>2.10.1</mongo>
+	</properties>
+	
+	<developers>
+		<developer>
+			<id>ogierke</id>
+			<name>Oliver Gierke</name>
+			<email>ogierke at vmware.com</email>
+			<organization>SpringSource</organization>
+			<organizationUrl>http://www.springsource.com</organizationUrl>
+			<roles>
+				<role>Project Lean</role>
+			</roles>
+			<timezone>+1</timezone>
+		</developer>
+		<developer>
+			<id>trisberg</id>
+			<name>Thomas Risberg</name>
+			<email>trisberg at vmware.com</email>
+			<organization>SpringSource</organization>
+			<organizationUrl>http://www.springsource.com</organizationUrl>
+			<roles>
+				<role>Developer</role>
+			</roles>
+			<timezone>-5</timezone>
+		</developer>
+		<developer>
+			<id>mpollack</id>
+			<name>Mark Pollack</name>
+			<email>mpollack at vmware.com</email>
+			<organization>SpringSource</organization>
+			<organizationUrl>http://www.springsource.com</organizationUrl>
+			<roles>
+				<role>Developer</role>
+			</roles>
+			<timezone>-5</timezone>
+		</developer>
+		<developer>
+			<id>jbrisbin</id>
+			<name>Jon Brisbin</name>
+			<email>jbrisbin at vmware.com</email>
+			<organization>SpringSource</organization>
+			<organizationUrl>http://www.springsource.com</organizationUrl>
+			<roles>
+				<role>Developer</role>
+			</roles>
+			<timezone>-6</timezone>
+		</developer>
+	</developers>

-        Unless required by applicable law or agreed to in writing, software
-        distributed under the License is distributed on an "AS IS" BASIS,
-        WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-        implied.
-        See the License for the specific language governing permissions and
-        limitations under the License.
-      </comments>
-    </license>
-  </licenses>
+	<dependencies>
+		<!-- MongoDB -->
+		<dependency>
+			<groupId>org.mongodb</groupId>
+			<artifactId>mongo-java-driver</artifactId>
+			<version>${mongo}</version>
+		</dependency>
+	</dependencies>

-  <properties>
-    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <!-- dist.* properties are used by the antrun tasks below -->
-    <dist.id>spring-data-mongo</dist.id>
-    <dist.name>Spring Data Mongo</dist.name>
-    <dist.key>SDMONGO</dist.key>
-    <dist.version>${project.version}</dist.version>
-    <dist.releaseType>snapshot</dist.releaseType>
-    <dist.finalName>${dist.id}-${dist.version}</dist.finalName>
-    <dist.fileName>${dist.finalName}.zip</dist.fileName>
-    <dist.filePath>target/${dist.fileName}</dist.filePath>
-    <dist.bucketName>dist.springframework.org</dist.bucketName>
-    <!-- these properties should be in ~/.m2/settings.xml
-      <dist.accessKey>s3 access key</dist.accessKey>
-      <dist.secretKey>s3 secret key</dist.secretKey>
-      -->
-  </properties>
+	<repositories>
+		<repository>
+			<id>spring-libs-release</id>
+			<url>http://repo.springsource.org/libs-release</url>
+		</repository>
+	</repositories>

-  <build>
-    <extensions>
-      <extension>
-        <groupId>org.springframework.build.aws</groupId>
-        <artifactId>org.springframework.build.aws.maven</artifactId>
-        <version>3.1.0.RELEASE</version>
-      </extension>
-    </extensions>
-
-    <plugins>
-      <plugin>
-        <groupId>com.agilejava.docbkx</groupId>
-        <artifactId>docbkx-maven-plugin</artifactId>
-	<!-- yes it really needs to be this (2.0.7) otherwise pdf generation from a clean build doesn't work -->
-        <version>2.0.7</version>
-        <executions>
-          <execution>
-            <goals>
-              <goal>generate-html</goal>
-              <goal>generate-pdf</goal>
-            </goals>
-            <phase>pre-site</phase>
-          </execution>
-        </executions>
-        <dependencies>
-          <dependency>
-            <groupId>org.docbook</groupId>
-            <artifactId>docbook-xml</artifactId>
-            <version>4.4</version>
-            <scope>runtime</scope>
-          </dependency>
-        </dependencies>
-        <configuration>
-          <includes>index.xml</includes>
-          <xincludeSupported>true</xincludeSupported>
-          <foCustomization>${project.basedir}/src/docbkx/resources/xsl/fopdf.xsl</foCustomization>
-          <htmlStylesheet>css/html.css</htmlStylesheet>
-          <chunkedOutput>false</chunkedOutput>
-          <htmlCustomization>${project.basedir}/src/docbkx/resources/xsl/html.xsl</htmlCustomization>
-          <useExtensions>1</useExtensions>
-          <highlightSource>1</highlightSource>
-          <highlightDefaultLanguage />
-          <!-- callouts -->
-          <entities>
-            <entity>
-              <name>version</name>
-              <value>${project.version}</value>
-            </entity>
-          </entities>
-          <postProcess>
-            <copy todir="${project.basedir}/target/site/reference">
-              <fileset dir="${project.basedir}/target/docbkx">
-                <include name="**/*.html" />
-                <include name="**/*.pdf" />
-              </fileset>
-            </copy>
-            <copy todir="${project.basedir}/target/site/reference/html">
-              <fileset dir="${project.basedir}/src/docbkx/resources">
-                <include name="**/*.css" />
-                <include name="**/*.png" />
-                <include name="**/*.gif" />
-                <include name="**/*.jpg" />
-              </fileset>
-            </copy>
-            <copy todir="${project.basedir}/target/site/reference/html">
-              <fileset dir="${project.basedir}/src/docbkx/resources/images">
-                <include name="*.png" />
-              </fileset>
-            </copy>
-            <move file="${project.basedir}/target/site/reference/pdf/index.pdf" tofile="${project.basedir}/target/site/reference/pdf/spring-data-mongo-reference.pdf" failonerror="false" />
-          </postProcess>
-        </configuration>
-      </plugin>
-
-      <plugin>
-        <artifactId>maven-javadoc-plugin</artifactId>
-        <version>2.5</version>
-        <configuration>
-          <aggregate>true</aggregate>
-          <breakiterator>true</breakiterator>
-          <header>Spring Data Document</header>
-          <source>1.5</source>
-          <quiet>true</quiet>
-          <javadocDirectory>${project.basedir}/src/main/javadoc</javadocDirectory>
-          <overview>${project.basedir}/src/main/javadoc/overview.html</overview>
-          <stylesheetfile>${project.basedir}/src/main/javadoc/spring-javadoc.css</stylesheetfile>
-          <!-- copies doc-files subdirectory which contains image resources -->
-          <docfilessubdirs>true</docfilessubdirs>
-          <links>
-            <link>http://static.springframework.org/spring/docs/3.0.x/javadoc-api</link>
-            <link>http://download.oracle.com/javase/1.5.0/docs/api</link>
-            <link>http://api.mongodb.org/java/2.3</link>
-          </links>
-        </configuration>
-      </plugin>
-      <plugin><!--
-				run `mvn package assembly:assembly` to trigger assembly creation.
-				see http://www.sonatype.com/books/mvnref-book/reference/assemblies-set-dist-assemblies.html -->
-        <artifactId>maven-assembly-plugin</artifactId>
-        <version>2.2-beta-5</version>
-        <inherited>false</inherited>
-        <executions>
-          <execution>
-            <id>distribution</id>
-            <goals>
-              <goal>single</goal>
-            </goals>
-            <phase>package</phase>
-            <configuration>
-              <descriptors>
-                <descriptor>${project.basedir}/src/assembly/distribution.xml</descriptor>
-              </descriptors>
-              <appendAssemblyId>false</appendAssemblyId>
-            </configuration>
-          </execution>
-        </executions>
-      </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-antrun-plugin</artifactId>
-        <version>1.4</version>
-        <executions>
-          <execution>
-            <id>upload-dist</id>
-            <phase>deploy</phase>
-            <configuration>
-              <tasks>
-                <ant antfile="${basedir}/src/ant/upload-dist.xml">
-                  <target name="upload-dist" />
-                </ant>
-              </tasks>
-            </configuration>
-            <goals>
-              <goal>run</goal>
-            </goals>
-          </execution>
-        </executions>
-        <dependencies>
-          <dependency>
-            <groupId>org.springframework.build</groupId>
-            <artifactId>org.springframework.build.aws.ant</artifactId>
-            <version>3.0.5.RELEASE</version>
-          </dependency>
-          <dependency>
-            <groupId>net.java.dev.jets3t</groupId>
-            <artifactId>jets3t</artifactId>
-            <version>0.7.2</version>
-          </dependency>
-        </dependencies>
-      </plugin>
-    </plugins>
-    <!-- the name of this project is 'spring-data-mongo-dist';
-         make sure the zip file is just 'spring-data-mongo'. -->
-    <finalName>${dist.finalName}</finalName>
-  </build>
-
-  <pluginRepositories>
-    <pluginRepository>
-      <!-- necessary for bundlor and utils -->
-      <id>repository.plugin.springsource.release</id>
-      <name>SpringSource Maven Repository</name>
-      <url>http://repository.springsource.com/maven/bundles/release</url>
-    </pluginRepository>
-    <pluginRepository>
-      <id>spring-libs-release</id>
-      <name>Spring Framework Maven Release Repository</name>
-      <url>http://repo.springsource.org/libs-release</url>
-    </pluginRepository>
-  </pluginRepositories>
-
-  <distributionManagement>
-    <!-- see 'staging' profile for dry-run deployment settings -->
-    <downloadUrl>http://www.springsource.com/spring-data</downloadUrl>
-    <site>
-      <id>static.springframework.org</id>
-      <url>
-        scp://static.springframework.org/var/www/domains/springframework.org/static/htdocs/spring-data/data-mongodb/snapshot-site
-      </url>
-    </site>
-    <repository>
-      <id>spring-release</id>
-      <name>Spring Release Repository</name>
-      <url>s3://maven.springframework.org/release</url>
-    </repository>
-    <snapshotRepository>
-      <id>spring-snapshot</id>
-      <name>Spring Snapshot Repository</name>
-      <url>s3://maven.springframework.org/snapshot</url>
-    </snapshotRepository>
-  </distributionManagement>
-  <scm>
-    <url>https://github.com/SpringSource/spring-data-mongodb</url>
-  </scm>
 </project>
--- a/spring-data-mongodb-cross-store/pom.xml
+++ b/spring-data-mongodb-cross-store/pom.xml
@@ -1,171 +1,145 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-  <modelVersion>4.0.0</modelVersion>
-  <parent>
-    <groupId>org.springframework.data</groupId>
-    <artifactId>spring-data-mongodb-parent</artifactId>
-    <version>1.0.2.RELEASE</version>
-    <relativePath>../spring-data-mongodb-parent/pom.xml</relativePath>
-  </parent>
-  <artifactId>spring-data-mongodb-cross-store</artifactId>
-  <name>Spring Data MongoDB Cross-store Persistence Support</name>
-  <dependencies>

-    <!--  Spring -->
-    <dependency>
-      <groupId>org.springframework</groupId>
-      <artifactId>spring-beans</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>org.springframework</groupId>
-      <artifactId>spring-tx</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>org.springframework</groupId>
-      <artifactId>spring-aspects</artifactId>
-      <version>${org.springframework.version.range}</version>
-    </dependency>
-    <dependency>
-      <groupId>org.springframework</groupId>
-      <artifactId>spring-orm</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>org.springframework</groupId>
-      <artifactId>spring-test</artifactId>
-      <scope>test</scope>
-    </dependency>
+	<modelVersion>4.0.0</modelVersion>
+	
+	<parent>
+		<groupId>org.springframework.data</groupId>
+		<artifactId>spring-data-mongodb-parent</artifactId>
+		<version>1.2.5.BUILD-SNAPSHOT</version>
+		<relativePath>../pom.xml</relativePath>
+	</parent>
+	
+	<artifactId>spring-data-mongodb-cross-store</artifactId>
+	<name>Spring Data MongoDB - Cross-Store Persistence Support</name>
+	
+	<properties>
+		<jpa>1.0.0.Final</jpa>
+		<hibernate>3.6.10.Final</hibernate>
+	</properties>
+	
+	<dependencies>

-    <!--  Spring Data -->
-    <dependency>
-      <groupId>org.springframework.data</groupId>
-      <artifactId>spring-data-commons-core</artifactId>
-    </dependency>
-    <!-- <dependency>
-      <groupId>org.springframework.data</groupId>
-      <artifactId>spring-data-commons-aspects</artifactId>
-    </dependency> -->
-    <dependency>
-      <groupId>org.springframework.data</groupId>
-      <artifactId>spring-data-mongodb</artifactId>
-    </dependency>
+		<!-- Spring -->
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-beans</artifactId>
+			<version>${spring}</version>
+			<exclusions>
+				<exclusion>
+					<groupId>commons-logging</groupId>
+					<artifactId>commons-logging</artifactId>
+				</exclusion>
+			</exclusions>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-tx</artifactId>
+			<version>${spring}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-aspects</artifactId>
+			<version>${spring}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-orm</artifactId>
+			<version>${spring}</version>
+		</dependency>

+		<!-- Spring Data -->
+		<dependency>
+			<groupId>org.springframework.data</groupId>
+			<artifactId>spring-data-mongodb</artifactId>
+			<version>1.2.5.BUILD-SNAPSHOT</version>
+		</dependency>

-    <!-- Logging -->
-    <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-api</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>jcl-over-slf4j</artifactId>
-      <scope>compile</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-log4j12</artifactId>
-      <scope>runtime</scope>
-    </dependency>
-    <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
-      <scope>runtime</scope>
-    </dependency>
+		<dependency>
+			<groupId>org.aspectj</groupId>
+			<artifactId>aspectjrt</artifactId>
+			<version>${aspectj}</version>
+		</dependency>
+		<dependency>
+			<groupId>cglib</groupId>
+			<artifactId>cglib</artifactId>
+			<version>2.2</version>
+		</dependency>

-    <dependency>
-      <groupId>javax.annotation</groupId>
-      <artifactId>jsr250-api</artifactId>
-      <optional>true</optional>
-    </dependency>
+		<!-- JPA -->
+		<dependency>
+			<groupId>org.hibernate.javax.persistence</groupId>
+			<artifactId>hibernate-jpa-2.0-api</artifactId>
+			<version>${jpa}</version>
+		</dependency>

-    <dependency>
-      <groupId>org.aspectj</groupId>
-      <artifactId>aspectjrt</artifactId>
-      <version>${aspectj.version}</version>
-    </dependency>
-    <dependency>
-      <groupId>cglib</groupId>
-      <artifactId>cglib</artifactId>
-      <version>2.2</version>
-    </dependency>
+		<!-- For Tests -->
+		<dependency>
+			<groupId>org.hibernate</groupId>
+			<artifactId>hibernate-entitymanager</artifactId>
+			<version>${hibernate}</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>hsqldb</groupId>
+			<artifactId>hsqldb</artifactId>
+			<version>1.8.0.10</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>javax.validation</groupId>
+			<artifactId>validation-api</artifactId>
+			<version>1.0.0.GA</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.hibernate</groupId>
+			<artifactId>hibernate-validator</artifactId>
+			<version>4.0.2.GA</version>
+			<scope>test</scope>
+		</dependency>

-    <!-- JPA -->
-    <dependency>
-      <groupId>org.hibernate.javax.persistence</groupId>
-      <artifactId>hibernate-jpa-2.0-api</artifactId>
-      <version>1.0.0.Final</version>
-    </dependency>
+	</dependencies>

-  <!-- For Tests -->
-    <dependency>
-        <groupId>org.hibernate</groupId>
-        <artifactId>hibernate-entitymanager</artifactId>
-        <version>3.5.5-Final</version>
-        <scope>test</scope>
-    </dependency>
-    <dependency>
-        <groupId>hsqldb</groupId>
-        <artifactId>hsqldb</artifactId>
-        <version>1.8.0.10</version>
-        <scope>test</scope>
-    </dependency>
-    <dependency>
-        <groupId>javax.validation</groupId>
-        <artifactId>validation-api</artifactId>
-        <version>1.0.0.GA</version>
-        <scope>test</scope>
-    </dependency>
-    <dependency>
-        <groupId>org.hibernate</groupId>
-        <artifactId>hibernate-validator</artifactId>
-        <version>4.0.2.GA</version>
-        <scope>test</scope>
-    </dependency>
-
-  </dependencies>
-
-  <build>
-    <plugins>
-      <plugin>
-        <groupId>org.codehaus.mojo</groupId>
-        <artifactId>aspectj-maven-plugin</artifactId>
-        <version>1.2</version>
-        <dependencies>
-          <dependency>
-            <groupId>org.aspectj</groupId>
-            <artifactId>aspectjrt</artifactId>
-            <version>${aspectj.version}</version>
-          </dependency>
-          <dependency>
-            <groupId>org.aspectj</groupId>
-            <artifactId>aspectjtools</artifactId>
-            <version>${aspectj.version}</version>
-          </dependency>
-        </dependencies>
-        <executions>
-          <execution>
-            <goals>
-              <goal>compile</goal>
-              <goal>test-compile</goal>
-            </goals>
-          </execution>
-        </executions>
-        <configuration>
-          <outxml>true</outxml>
-          <aspectLibraries>
-            <aspectLibrary>
-              <groupId>org.springframework</groupId>
-              <artifactId>spring-aspects</artifactId>
-            </aspectLibrary>
-            <!-- <aspectLibrary>
-              <groupId>org.springframework.data</groupId>
-              <artifactId>spring-data-commons-aspects</artifactId>
-            </aspectLibrary> -->
-          </aspectLibraries>
-          <source>1.5</source>
-          <target>1.5</target>
-        </configuration>
-      </plugin>
-    </plugins>
-  </build>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.codehaus.mojo</groupId>
+				<artifactId>aspectj-maven-plugin</artifactId>
+				<version>1.4</version>
+				<dependencies>
+					<dependency>
+						<groupId>org.aspectj</groupId>
+						<artifactId>aspectjrt</artifactId>
+						<version>${aspectj}</version>
+					</dependency>
+					<dependency>
+						<groupId>org.aspectj</groupId>
+						<artifactId>aspectjtools</artifactId>
+						<version>${aspectj}</version>
+					</dependency>
+				</dependencies>
+				<executions>
+					<execution>
+						<goals>
+							<goal>compile</goal>
+							<goal>test-compile</goal>
+						</goals>
+					</execution>
+				</executions>
+				<configuration>
+					<outxml>true</outxml>
+					<aspectLibraries>
+						<aspectLibrary>
+							<groupId>org.springframework</groupId>
+							<artifactId>spring-aspects</artifactId>
+						</aspectLibrary>
+					</aspectLibraries>
+					<source>${source.level}</source>
+					<target>${source.level}</target>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>

 </project>
--- a/spring-data-mongodb-cross-store/src/main/java/org/springframework/data/mongodb/crossstore/MongoChangeSetPersister.java
+++ b/spring-data-mongodb-cross-store/src/main/java/org/springframework/data/mongodb/crossstore/MongoChangeSetPersister.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 the original author or authors.
+ * Copyright 2011-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -17,8 +17,8 @@ package org.springframework.data.mongodb.crossstore;

 import javax.persistence.EntityManagerFactory;

-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.dao.DataAccessException;
 import org.springframework.dao.DataAccessResourceFailureException;
 import org.springframework.dao.DataIntegrityViolationException;
@@ -34,6 +34,10 @@ import com.mongodb.DBCollection;
 import com.mongodb.DBObject;
 import com.mongodb.MongoException;

+/**
+ * @author Thomas Risberg
+ * @author Oliver Gierke
+ */
 public class MongoChangeSetPersister implements ChangeSetPersister<Object> {

 	private static final String ENTITY_CLASS = "_entity_class";
@@ -44,7 +48,7 @@ public class MongoChangeSetPersister implements ChangeSetPersister<Object> {

 	private static final String ENTITY_FIELD_CLASS = "_entity_field_class";

-	protected final Log log = LogFactory.getLog(getClass());
+	protected final Logger log = LoggerFactory.getLogger(getClass());

 	private MongoTemplate mongoTemplate;

@@ -58,10 +62,12 @@ public class MongoChangeSetPersister implements ChangeSetPersister<Object> {
 		this.entityManagerFactory = entityManagerFactory;
 	}

-
-	public void getPersistentState(Class<? extends ChangeSetBacked> entityClass,
-			Object id, final ChangeSet changeSet)
-					throws DataAccessException, NotFoundException {
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.crossstore.ChangeSetPersister#getPersistentState(java.lang.Class, java.lang.Object, org.springframework.data.crossstore.ChangeSet)
+	 */
+	public void getPersistentState(Class<? extends ChangeSetBacked> entityClass, Object id, final ChangeSet changeSet)
+			throws DataAccessException, NotFoundException {

 		if (id == null) {
 			log.debug("Unable to load MongoDB data for null id");
@@ -77,8 +83,7 @@ public class MongoChangeSetPersister implements ChangeSetPersister<Object> {
 			log.debug("Loading MongoDB data for " + dbk);
 		}
 		mongoTemplate.execute(collName, new CollectionCallback<Object>() {
-			public Object doInCollection(DBCollection collection)
-					throws MongoException, DataAccessException {
+			public Object doInCollection(DBCollection collection) throws MongoException, DataAccessException {
 				for (DBObject dbo : collection.find(dbk)) {
 					String key = (String) dbo.get(ENTITY_FIELD_NAME);
 					if (log.isDebugEnabled()) {
@@ -87,9 +92,8 @@ public class MongoChangeSetPersister implements ChangeSetPersister<Object> {
 					if (!changeSet.getValues().containsKey(key)) {
 						String className = (String) dbo.get(ENTITY_FIELD_CLASS);
 						if (className == null) {
-							throw new DataIntegrityViolationException(
-									"Unble to convert property " + key
-									+ ": Invalid metadata, " + ENTITY_FIELD_CLASS + " not available");
+							throw new DataIntegrityViolationException("Unble to convert property " + key + ": Invalid metadata, "
+									+ ENTITY_FIELD_CLASS + " not available");
 						}
 						Class<?> clazz = ClassUtils.resolveClassName(className, ClassUtils.getDefaultClassLoader());
 						Object value = mongoTemplate.getConverter().read(clazz, dbo);
@@ -104,6 +108,10 @@ public class MongoChangeSetPersister implements ChangeSetPersister<Object> {
 		});
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.crossstore.ChangeSetPersister#getPersistentId(org.springframework.data.crossstore.ChangeSetBacked, org.springframework.data.crossstore.ChangeSet)
+	 */
 	public Object getPersistentId(ChangeSetBacked entity, ChangeSet cs) throws DataAccessException {
 		log.debug("getPersistentId called on " + entity);
 		if (entityManagerFactory == null) {
@@ -113,6 +121,10 @@ public class MongoChangeSetPersister implements ChangeSetPersister<Object> {
 		return o;
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.crossstore.ChangeSetPersister#persistState(org.springframework.data.crossstore.ChangeSetBacked, org.springframework.data.crossstore.ChangeSet)
+	 */
 	public Object persistState(ChangeSetBacked entity, ChangeSet cs) throws DataAccessException {
 		if (cs == null) {
 			log.debug("Flush: changeset was null, nothing to flush.");
@@ -135,10 +147,8 @@ public class MongoChangeSetPersister implements ChangeSetPersister<Object> {
 				dbQuery.put(ENTITY_ID, getPersistentId(entity, cs));
 				dbQuery.put(ENTITY_CLASS, entity.getClass().getName());
 				dbQuery.put(ENTITY_FIELD_NAME, key);
-				DBObject dbId = mongoTemplate.execute(collName,
-						new CollectionCallback<DBObject>() {
-					public DBObject doInCollection(DBCollection collection)
-							throws MongoException, DataAccessException {
+				DBObject dbId = mongoTemplate.execute(collName, new CollectionCallback<DBObject>() {
+					public DBObject doInCollection(DBCollection collection) throws MongoException, DataAccessException {
 						return collection.findOne(dbQuery);
 					}
 				});
@@ -147,14 +157,12 @@ public class MongoChangeSetPersister implements ChangeSetPersister<Object> {
 						log.debug("Flush: removing: " + dbQuery);
 					}
 					mongoTemplate.execute(collName, new CollectionCallback<Object>() {
-						public Object doInCollection(DBCollection collection)
-								throws MongoException, DataAccessException {
+						public Object doInCollection(DBCollection collection) throws MongoException, DataAccessException {
 							collection.remove(dbQuery);
 							return null;
 						}
 					});
-				}
-				else {
+				} else {
 					final DBObject dbDoc = new BasicDBObject();
 					dbDoc.putAll(dbQuery);
 					if (log.isDebugEnabled()) {
@@ -166,8 +174,7 @@ public class MongoChangeSetPersister implements ChangeSetPersister<Object> {
 						dbDoc.put("_id", dbId.get("_id"));
 					}
 					mongoTemplate.execute(collName, new CollectionCallback<Object>() {
-						public Object doInCollection(DBCollection collection)
-								throws MongoException, DataAccessException {
+						public Object doInCollection(DBCollection collection) throws MongoException, DataAccessException {
 							collection.save(dbDoc);
 							return null;
 						}
@@ -178,8 +185,13 @@ public class MongoChangeSetPersister implements ChangeSetPersister<Object> {
 		return 0L;
 	}

+	/**
+	 * Returns the collection the given entity type shall be persisted to.
+	 * 
+	 * @param entityClass must not be {@literal null}.
+	 * @return
+	 */
 	private String getCollectionNameForEntity(Class<? extends ChangeSetBacked> entityClass) {
-		return ClassUtils.getQualifiedName(entityClass);
+		return mongoTemplate.getCollectionName(entityClass);
 	}
-
 }
--- a/spring-data-mongodb-cross-store/src/main/java/org/springframework/data/mongodb/crossstore/MongoDocumentBacking.aj
+++ b/spring-data-mongodb-cross-store/src/main/java/org/springframework/data/mongodb/crossstore/MongoDocumentBacking.aj
@@ -21,13 +21,12 @@ import javax.persistence.EntityManager;
 import javax.persistence.Transient;
 import javax.persistence.Entity;

-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.aspectj.lang.JoinPoint;
 import org.aspectj.lang.reflect.FieldSignature;

+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.dao.DataAccessException;
-
 import org.springframework.data.mongodb.crossstore.RelatedDocument;
 import org.springframework.data.mongodb.crossstore.DocumentBacked;
 import org.springframework.data.crossstore.ChangeSetBackedTransactionSynchronization;
@@ -38,235 +37,234 @@ import org.springframework.data.crossstore.HashMapChangeSet;
 import org.springframework.transaction.support.TransactionSynchronizationManager;

 /**
- * Aspect to turn an object annotated with @Document into a persistent document
- * using Mongo.
+ * Aspect to turn an object annotated with @Document into a persistent document using Mongo.
 * 
 * @author Thomas Risberg
 */
 public aspect MongoDocumentBacking {

-  private static final Log LOGGER = LogFactory
-      .getLog(MongoDocumentBacking.class);
+	private static final Logger LOGGER = LoggerFactory.getLogger(MongoDocumentBacking.class);

-  // Aspect shared config
-  private ChangeSetPersister<Object> changeSetPersister;
+	// Aspect shared config
+	private ChangeSetPersister<Object> changeSetPersister;

-  public void setChangeSetPersister(
-      ChangeSetPersister<Object> changeSetPersister) {
-    this.changeSetPersister = changeSetPersister;
-  }
+	public void setChangeSetPersister(ChangeSetPersister<Object> changeSetPersister) {
+		this.changeSetPersister = changeSetPersister;
+	}

-  // ITD to introduce N state to Annotated objects
-  declare parents : (@Entity *) implements DocumentBacked;
+	// ITD to introduce N state to Annotated objects
+	declare parents : (@Entity *) implements DocumentBacked;

-  // The annotated fields that will be persisted in MongoDB rather than with JPA
-  declare @field: @RelatedDocument * (@Entity+ *).*:@Transient;
+	// The annotated fields that will be persisted in MongoDB rather than with JPA
+	declare @field: @RelatedDocument * (@Entity+ *).*:@Transient;

-  // -------------------------------------------------------------------------
-  // Advise user-defined constructors of ChangeSetBacked objects to create a new
-  // backing ChangeSet
-  // -------------------------------------------------------------------------
-  pointcut arbitraryUserConstructorOfChangeSetBackedObject(DocumentBacked entity) : 
+	// -------------------------------------------------------------------------
+	// Advise user-defined constructors of ChangeSetBacked objects to create a new
+	// backing ChangeSet
+	// -------------------------------------------------------------------------
+	pointcut arbitraryUserConstructorOfChangeSetBackedObject(DocumentBacked entity) : 
 		execution((DocumentBacked+).new(..)) &&
 		!execution((DocumentBacked+).new(ChangeSet)) &&
 		this(entity);

-  pointcut finderConstructorOfChangeSetBackedObject(DocumentBacked entity,
-      ChangeSet cs) : 
+	pointcut finderConstructorOfChangeSetBackedObject(DocumentBacked entity, ChangeSet cs) : 
 		execution((DocumentBacked+).new(ChangeSet)) &&
 		this(entity) && 
 		args(cs);

-  protected pointcut entityFieldGet(DocumentBacked entity) :
+	protected pointcut entityFieldGet(DocumentBacked entity) :
        get(@RelatedDocument * DocumentBacked+.*) &&
        this(entity) &&
        !get(* DocumentBacked.*);

-  protected pointcut entityFieldSet(DocumentBacked entity, Object newVal) :
+	protected pointcut entityFieldSet(DocumentBacked entity, Object newVal) :
        set(@RelatedDocument * DocumentBacked+.*) &&
        this(entity) &&
        args(newVal) &&
        !set(* DocumentBacked.*);

-  // intercept EntityManager.merge calls
-  public pointcut entityManagerMerge(EntityManager em, Object entity) : 
+	// intercept EntityManager.merge calls
+	public pointcut entityManagerMerge(EntityManager em, Object entity) : 
    call(* EntityManager.merge(Object)) &&
    target(em) &&
    args(entity);
-  
-  // intercept EntityManager.remove calls
-//  public pointcut entityManagerRemove(EntityManager em, Object entity) : 
-//    call(* EntityManager.remove(Object)) &&
-//    target(em) &&
-//    args(entity);

-  // move changeSet from detached entity to the newly merged persistent object
-  Object around(EntityManager em, Object entity) : entityManagerMerge(em, entity) {
-    Object mergedEntity = proceed(em, entity);
-    if (entity instanceof DocumentBacked && mergedEntity instanceof DocumentBacked) {
-      ((DocumentBacked)mergedEntity).changeSet = ((DocumentBacked)entity).getChangeSet();
-    }
-    return mergedEntity;
-  }
+	// intercept EntityManager.remove calls
+	// public pointcut entityManagerRemove(EntityManager em, Object entity) :
+	// call(* EntityManager.remove(Object)) &&
+	// target(em) &&
+	// args(entity);

-  // clear changeSet from removed entity
-//  Object around(EntityManager em, Object entity) : entityManagerRemove(em, entity) {
-//    if (entity instanceof DocumentBacked) {
-//      removeChangeSetValues((DocumentBacked)entity);
-//    }
-//    return proceed(em, entity);
-//  }
-
-  private static void removeChangeSetValues(DocumentBacked entity) {
-    LOGGER.debug("Removing all change-set values for " + entity);	
-	ChangeSet nulledCs = new HashMapChangeSet();
-	DocumentBacked documentEntity = (DocumentBacked) entity;
-	@SuppressWarnings("unchecked")
-	ChangeSetPersister<Object> changeSetPersister = (ChangeSetPersister<Object>)documentEntity.itdChangeSetPersister;
-	try {
-        changeSetPersister.getPersistentState(
-            documentEntity.getClass(),
-            documentEntity.get_persistent_id(), 
-            documentEntity.getChangeSet());
-	} 
-	catch (DataAccessException e) {} 
-	catch (NotFoundException e) {}
-	for (String key :entity.getChangeSet().getValues().keySet()) {
-        nulledCs.set(key, null);
+	// move changeSet from detached entity to the newly merged persistent object
+	Object around(EntityManager em, Object entity) : entityManagerMerge(em, entity) {
+		Object mergedEntity = proceed(em, entity);
+		if (entity instanceof DocumentBacked && mergedEntity instanceof DocumentBacked) {
+			((DocumentBacked) mergedEntity).changeSet = ((DocumentBacked) entity).getChangeSet();
+		}
+		return mergedEntity;
 	}
-	entity.setChangeSet(nulledCs);
-  }

-  before(DocumentBacked entity) : arbitraryUserConstructorOfChangeSetBackedObject(entity) {
-    LOGGER
-        .debug("User-defined constructor called on DocumentBacked object of class "
-            + entity.getClass());
-    // Populate all ITD fields
-    entity.setChangeSet(new HashMapChangeSet());
-    entity.itdChangeSetPersister = changeSetPersister;
-    entity.itdTransactionSynchronization = 
-        new ChangeSetBackedTransactionSynchronization(changeSetPersister, entity);
-    //registerTransactionSynchronization(entity);
-  }
+	// clear changeSet from removed entity
+	// Object around(EntityManager em, Object entity) : entityManagerRemove(em, entity) {
+	// if (entity instanceof DocumentBacked) {
+	// removeChangeSetValues((DocumentBacked)entity);
+	// }
+	// return proceed(em, entity);
+	// }

-  private static void registerTransactionSynchronization(DocumentBacked entity) {
-    if (TransactionSynchronizationManager.isSynchronizationActive()) {
-      if (!TransactionSynchronizationManager.getSynchronizations().contains(entity.itdTransactionSynchronization)) {
-        if (LOGGER.isDebugEnabled()) {
-          LOGGER.debug("Adding transaction synchronization for " + entity);
-        }
-        TransactionSynchronizationManager.registerSynchronization(entity.itdTransactionSynchronization);
-      }
-      else {
-        if (LOGGER.isDebugEnabled()) {
-          LOGGER.debug("Transaction synchronization already active for " + entity);
-        }
-      }
-    }
-    else {
-      if (LOGGER.isDebugEnabled()) {
-        LOGGER.debug("Transaction synchronization is not active for " + entity);
-      }
-    }
-  }
+	private static void removeChangeSetValues(DocumentBacked entity) {
+		LOGGER.debug("Removing all change-set values for " + entity);
+		ChangeSet nulledCs = new HashMapChangeSet();
+		DocumentBacked documentEntity = (DocumentBacked) entity;
+		@SuppressWarnings("unchecked")
+		ChangeSetPersister<Object> changeSetPersister = (ChangeSetPersister<Object>) documentEntity.itdChangeSetPersister;
+		try {
+			changeSetPersister.getPersistentState(documentEntity.getClass(), documentEntity.get_persistent_id(),
+					documentEntity.getChangeSet());
+		} catch (DataAccessException e) {
+		} catch (NotFoundException e) {
+		}
+		for (String key : entity.getChangeSet().getValues().keySet()) {
+			nulledCs.set(key, null);
+		}
+		entity.setChangeSet(nulledCs);
+	}

-  // -------------------------------------------------------------------------
-  // ChangeSet-related mixins
-  // -------------------------------------------------------------------------
-  // Introduced field
-  @Transient private ChangeSet DocumentBacked.changeSet;
+	before(DocumentBacked entity) : arbitraryUserConstructorOfChangeSetBackedObject(entity) {
+		LOGGER.debug("User-defined constructor called on DocumentBacked object of class " + entity.getClass());
+		// Populate all ITD fields
+		entity.setChangeSet(new HashMapChangeSet());
+		entity.itdChangeSetPersister = changeSetPersister;
+		entity.itdTransactionSynchronization = new ChangeSetBackedTransactionSynchronization(changeSetPersister, entity);
+		// registerTransactionSynchronization(entity);
+	}

-  @Transient private ChangeSetPersister<?> DocumentBacked.itdChangeSetPersister;
+	private static void registerTransactionSynchronization(DocumentBacked entity) {
+		if (TransactionSynchronizationManager.isSynchronizationActive()) {
+			if (!TransactionSynchronizationManager.getSynchronizations().contains(entity.itdTransactionSynchronization)) {
+				if (LOGGER.isDebugEnabled()) {
+					LOGGER.debug("Adding transaction synchronization for " + entity);
+				}
+				TransactionSynchronizationManager.registerSynchronization(entity.itdTransactionSynchronization);
+			} else {
+				if (LOGGER.isDebugEnabled()) {
+					LOGGER.debug("Transaction synchronization already active for " + entity);
+				}
+			}
+		} else {
+			if (LOGGER.isDebugEnabled()) {
+				LOGGER.debug("Transaction synchronization is not active for " + entity);
+			}
+		}
+	}

-  @Transient private ChangeSetBackedTransactionSynchronization DocumentBacked.itdTransactionSynchronization;
+	// -------------------------------------------------------------------------
+	// ChangeSet-related mixins
+	// -------------------------------------------------------------------------
+	// Introduced field
+	@Transient
+	private ChangeSet DocumentBacked.changeSet;

-  public void DocumentBacked.setChangeSet(ChangeSet cs) {
-    this.changeSet = cs;
-  }
+	@Transient
+	private ChangeSetPersister<?> DocumentBacked.itdChangeSetPersister;

-  public ChangeSet DocumentBacked.getChangeSet() {
-    return changeSet;
-  }
+	@Transient
+	private ChangeSetBackedTransactionSynchronization DocumentBacked.itdTransactionSynchronization;

-  // Flush the entity state to the persistent store
-  public void DocumentBacked.flush() {
-    Object id = itdChangeSetPersister.getPersistentId(this, this.changeSet);
-    itdChangeSetPersister.persistState(this, this.changeSet);
-  }
+	public void DocumentBacked.setChangeSet(ChangeSet cs) {
+		this.changeSet = cs;
+	}

-  public Object DocumentBacked.get_persistent_id() {
-    return itdChangeSetPersister.getPersistentId(this, this.changeSet);
-  }
+	public ChangeSet DocumentBacked.getChangeSet() {
+		return changeSet;
+	}

-  // lifecycle methods
-  @javax.persistence.PostPersist public void DocumentBacked.itdPostPersist() {
-    if (LOGGER.isDebugEnabled()) {
-      LOGGER.debug("JPA lifecycle event PrePersist: " + this.getClass().getName());
-    }
-    registerTransactionSynchronization(this);
-  }
-  @javax.persistence.PreUpdate public void DocumentBacked.itdPreUpdate() {
-    if (LOGGER.isDebugEnabled()) {
-      LOGGER.debug("JPA lifecycle event PreUpdate: " + this.getClass().getName() + " :: " + this);
-    }
-    registerTransactionSynchronization(this);
-  }
-  @javax.persistence.PostUpdate public void DocumentBacked.itdPostUpdate() {
-    if (LOGGER.isDebugEnabled()) {
-      LOGGER.debug("JPA lifecycle event PostUpdate: " + this.getClass().getName() + " :: " + this);
-    }
-    registerTransactionSynchronization(this);
-  }
-  @javax.persistence.PostRemove public void DocumentBacked.itdPostRemove() {
-    if (LOGGER.isDebugEnabled()) {
-      LOGGER.debug("JPA lifecycle event PostRemove: " + this.getClass().getName() + " :: " + this);
-    }
-    registerTransactionSynchronization(this);
-    removeChangeSetValues(this);
-  }
-  @javax.persistence.PostLoad public void DocumentBacked.itdPostLoad() {
-    if (LOGGER.isDebugEnabled()) {
-      LOGGER.debug("JPA lifecycle event PostLoad: " + this.getClass().getName() + " :: " + this);
-    }
-    registerTransactionSynchronization(this);
-  }
-  
-  /**
-   * delegates field reads to the state accessors instance
-   */
-  Object around(DocumentBacked entity): entityFieldGet(entity) {
-    Field f = field(thisJoinPoint);
-    String propName = f.getName();
-    LOGGER.trace("GET " + f + " -> ChangeSet value property [" + propName
-        + "] using: " + entity.getChangeSet());
-    if (entity.getChangeSet().getValues().get(propName) == null) {
-      try {
-        this.changeSetPersister.getPersistentState(entity.getClass(),
-            entity.get_persistent_id(), entity.getChangeSet());
-      } catch (NotFoundException e) {
-      }
-    }
-    Object fValue = entity.getChangeSet().getValues().get(propName);
-    if (fValue != null) {
-      return fValue;
-    }
-    return proceed(entity);
-  }
+	// Flush the entity state to the persistent store
+	public void DocumentBacked.flush() {
+		Object id = itdChangeSetPersister.getPersistentId(this, this.changeSet);
+		itdChangeSetPersister.persistState(this, this.changeSet);
+	}

-  /**
-   * delegates field writes to the state accessors instance
-   */
-  Object around(DocumentBacked entity, Object newVal) : entityFieldSet(entity, newVal) {
-    Field f = field(thisJoinPoint);
-    String propName = f.getName();
-    LOGGER.trace("SET " + f + " -> ChangeSet number value property [" + propName
-        + "] with value=[" + newVal + "]");
-    entity.getChangeSet().set(propName, newVal);
-    return proceed(entity, newVal);
-  }
+	public Object DocumentBacked.get_persistent_id() {
+		return itdChangeSetPersister.getPersistentId(this, this.changeSet);
+	}

-  Field field(JoinPoint joinPoint) {
-    FieldSignature fieldSignature = (FieldSignature) joinPoint.getSignature();
-    return fieldSignature.getField();
-  }
+	// lifecycle methods
+	@javax.persistence.PostPersist
+	public void DocumentBacked.itdPostPersist() {
+		if (LOGGER.isDebugEnabled()) {
+			LOGGER.debug("JPA lifecycle event PrePersist: " + this.getClass().getName());
+		}
+		registerTransactionSynchronization(this);
+	}
+
+	@javax.persistence.PreUpdate
+	public void DocumentBacked.itdPreUpdate() {
+		if (LOGGER.isDebugEnabled()) {
+			LOGGER.debug("JPA lifecycle event PreUpdate: " + this.getClass().getName() + " :: " + this);
+		}
+		registerTransactionSynchronization(this);
+	}
+
+	@javax.persistence.PostUpdate
+	public void DocumentBacked.itdPostUpdate() {
+		if (LOGGER.isDebugEnabled()) {
+			LOGGER.debug("JPA lifecycle event PostUpdate: " + this.getClass().getName() + " :: " + this);
+		}
+		registerTransactionSynchronization(this);
+	}
+
+	@javax.persistence.PostRemove
+	public void DocumentBacked.itdPostRemove() {
+		if (LOGGER.isDebugEnabled()) {
+			LOGGER.debug("JPA lifecycle event PostRemove: " + this.getClass().getName() + " :: " + this);
+		}
+		registerTransactionSynchronization(this);
+		removeChangeSetValues(this);
+	}
+
+	@javax.persistence.PostLoad
+	public void DocumentBacked.itdPostLoad() {
+		if (LOGGER.isDebugEnabled()) {
+			LOGGER.debug("JPA lifecycle event PostLoad: " + this.getClass().getName() + " :: " + this);
+		}
+		registerTransactionSynchronization(this);
+	}
+
+	/**
+	 * delegates field reads to the state accessors instance
+	 */
+	Object around(DocumentBacked entity): entityFieldGet(entity) {
+		Field f = field(thisJoinPoint);
+		String propName = f.getName();
+		LOGGER.trace("GET " + f + " -> ChangeSet value property [" + propName + "] using: " + entity.getChangeSet());
+		if (entity.getChangeSet().getValues().get(propName) == null) {
+			try {
+				this.changeSetPersister
+						.getPersistentState(entity.getClass(), entity.get_persistent_id(), entity.getChangeSet());
+			} catch (NotFoundException e) {
+			}
+		}
+		Object fValue = entity.getChangeSet().getValues().get(propName);
+		if (fValue != null) {
+			return fValue;
+		}
+		return proceed(entity);
+	}
+
+	/**
+	 * delegates field writes to the state accessors instance
+	 */
+	Object around(DocumentBacked entity, Object newVal) : entityFieldSet(entity, newVal) {
+		Field f = field(thisJoinPoint);
+		String propName = f.getName();
+		LOGGER.trace("SET " + f + " -> ChangeSet number value property [" + propName + "] with value=[" + newVal + "]");
+		entity.getChangeSet().set(propName, newVal);
+		return proceed(entity, newVal);
+	}
+
+	Field field(JoinPoint joinPoint) {
+		FieldSignature fieldSignature = (FieldSignature) joinPoint.getSignature();
+		return fieldSignature.getField();
+	}
 }
--- a/spring-data-mongodb-cross-store/src/main/java/org/springframework/data/mongodb/crossstore/RelatedDocument.java
+++ b/spring-data-mongodb-cross-store/src/main/java/org/springframework/data/mongodb/crossstore/RelatedDocument.java
@@ -24,8 +24,6 @@ import java.lang.annotation.Target;
 * @author Thomas Risberg
 */
@Retention(RetentionPolicy.RUNTIME)
-@Target({
-    ElementType.FIELD
-})
+@Target({ ElementType.FIELD })
 public @interface RelatedDocument {
 }
--- a/spring-data-mongodb-cross-store/src/main/java/org/springframework/data/mongodb/crossstore/package-info.java
+++ b/spring-data-mongodb-cross-store/src/main/java/org/springframework/data/mongodb/crossstore/package-info.java
@@ -0,0 +1,5 @@
+/**
+ * Infrastructure for Spring Data's MongoDB cross store support.
+ */
+package org.springframework.data.mongodb.crossstore;
+
--- a/spring-data-mongodb-cross-store/src/test/java/org/springframework/data/mongodb/crossstore/CrossStoreMongoTests.java
+++ b/spring-data-mongodb-cross-store/src/test/java/org/springframework/data/mongodb/crossstore/CrossStoreMongoTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 the original author or authors.
+ * Copyright 2011-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -18,7 +18,9 @@ package org.springframework.data.mongodb.crossstore;
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContext;

+import org.junit.After;
 import org.junit.Assert;
+import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -26,7 +28,6 @@ import org.springframework.data.mongodb.core.MongoTemplate;
 import org.springframework.data.mongodb.crossstore.test.Address;
 import org.springframework.data.mongodb.crossstore.test.Person;
 import org.springframework.data.mongodb.crossstore.test.Resume;
-import org.springframework.test.annotation.Rollback;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 import org.springframework.transaction.PlatformTransactionManager;
@@ -35,92 +36,119 @@ import org.springframework.transaction.annotation.Transactional;
 import org.springframework.transaction.support.TransactionCallback;
 import org.springframework.transaction.support.TransactionTemplate;

-import com.mongodb.DBCollection;
 import com.mongodb.DBObject;

+/**
+ * Integration tests for MongoDB cross-store persistence (mainly {@link MongoChangeSetPersister}).
+ * 
+ * @author Thomas Risberg
+ * @author Oliver Gierke
+ */
@RunWith(SpringJUnit4ClassRunner.class)
-@ContextConfiguration(locations = "classpath:/META-INF/spring/applicationContext.xml")
+@ContextConfiguration("classpath:/META-INF/spring/applicationContext.xml")
 public class CrossStoreMongoTests {

 	@Autowired
-	private MongoTemplate mongoTemplate;
-
-	private EntityManager entityManager;
-
-	@Autowired
-	private PlatformTransactionManager transactionManager;
+	MongoTemplate mongoTemplate;

 	@PersistenceContext
-	public void setEntityManager(EntityManager entityManager) {
-		this.entityManager = entityManager;
+	EntityManager entityManager;
+
+	@Autowired
+	PlatformTransactionManager transactionManager;
+	TransactionTemplate txTemplate;
+
+	@Before
+	public void setUp() {
+
+		txTemplate = new TransactionTemplate(transactionManager);
+
+		clearData(Person.class);
+
+		Address address = new Address(12, "MAin St.", "Boston", "MA", "02101");
+
+		Resume resume = new Resume();
+		resume.addEducation("Skanstulls High School, 1975");
+		resume.addEducation("Univ. of Stockholm, 1980");
+		resume.addJob("DiMark, DBA, 1990-2000");
+		resume.addJob("VMware, Developer, 2007-");
+
+		final Person person = new Person("Thomas", 20);
+		person.setAddress(address);
+		person.setResume(resume);
+		person.setId(1L);
+
+		txTemplate.execute(new TransactionCallback<Void>() {
+			public Void doInTransaction(TransactionStatus status) {
+				entityManager.persist(person);
+				return null;
+			}
+		});
 	}

-	private void clearData(String collectionName) {
-		DBCollection col = this.mongoTemplate.getCollection(collectionName);
-		if (col != null) {
-			this.mongoTemplate.dropCollection(collectionName);
-		}
+	@After
+	public void tearDown() {
+		txTemplate.execute(new TransactionCallback<Void>() {
+			public Void doInTransaction(TransactionStatus status) {
+				entityManager.remove(entityManager.find(Person.class, 1L));
+				return null;
+			}
+		});
+	}
+
+	private void clearData(Class<?> domainType) {
+
+		String collectionName = mongoTemplate.getCollectionName(domainType);
+		mongoTemplate.dropCollection(collectionName);
 	}

 	@Test
 	@Transactional
-	@Rollback(false)
-	public void testCreateJpaToMongoEntityRelationship() {
-		clearData(Person.class.getName());
-		Person p = new Person("Thomas", 20);
-		Address a = new Address(12, "MAin St.", "Boston", "MA", "02101");
-		p.setAddress(a);
-		Resume r = new Resume();
-		r.addEducation("Skanstulls High School, 1975");
-		r.addEducation("Univ. of Stockholm, 1980");
-		r.addJob("DiMark, DBA, 1990-2000");
-		r.addJob("VMware, Developer, 2007-");
-		p.setResume(r);
-		p.setId(1L);
-		entityManager.persist(p);
-	}
-
-	@Test
-	@Transactional
-	@Rollback(false)
 	public void testReadJpaToMongoEntityRelationship() {
+
 		Person found = entityManager.find(Person.class, 1L);
 		Assert.assertNotNull(found);
 		Assert.assertEquals(Long.valueOf(1), found.getId());
 		Assert.assertNotNull(found);
 		Assert.assertEquals(Long.valueOf(1), found.getId());
 		Assert.assertNotNull(found.getResume());
-		Assert.assertEquals("DiMark, DBA, 1990-2000" + "; "
-				+ "VMware, Developer, 2007-", found.getResume().getJobs());
-		found.getResume().addJob("SpringDeveloper.com, Consultant, 2005-2006");
-		found.setAge(44);
+		Assert.assertEquals("DiMark, DBA, 1990-2000" + "; " + "VMware, Developer, 2007-", found.getResume().getJobs());
 	}

 	@Test
 	@Transactional
-	@Rollback(false)
 	public void testUpdatedJpaToMongoEntityRelationship() {
+
 		Person found = entityManager.find(Person.class, 1L);
+		found.setAge(44);
+		found.getResume().addJob("SpringDeveloper.com, Consultant, 2005-2006");
+
+		entityManager.merge(found);
+
 		Assert.assertNotNull(found);
 		Assert.assertEquals(Long.valueOf(1), found.getId());
 		Assert.assertNotNull(found);
 		Assert.assertEquals(Long.valueOf(1), found.getId());
 		Assert.assertNotNull(found.getResume());
-		Assert.assertEquals("DiMark, DBA, 1990-2000" + "; "
-				+ "VMware, Developer, 2007-" + "; "
+		Assert.assertEquals("DiMark, DBA, 1990-2000" + "; " + "VMware, Developer, 2007-" + "; "
 				+ "SpringDeveloper.com, Consultant, 2005-2006", found.getResume().getJobs());
 	}

 	@Test
 	public void testMergeJpaEntityWithMongoDocument() {
-		TransactionTemplate txTemplate = new TransactionTemplate(transactionManager);
+
 		final Person detached = entityManager.find(Person.class, 1L);
+		entityManager.detach(detached);
 		detached.getResume().addJob("TargetRx, Developer, 2000-2005");
+
 		Person merged = txTemplate.execute(new TransactionCallback<Person>() {
 			public Person doInTransaction(TransactionStatus status) {
-				return entityManager.merge(detached);
+				Person result = entityManager.merge(detached);
+				entityManager.flush();
+				return result;
 			}
 		});
+
 		Assert.assertTrue(detached.getResume().getJobs().contains("TargetRx, Developer, 2000-2005"));
 		Assert.assertTrue(merged.getResume().getJobs().contains("TargetRx, Developer, 2000-2005"));
 		final Person updated = entityManager.find(Person.class, 1L);
@@ -129,7 +157,7 @@ public class CrossStoreMongoTests {

 	@Test
 	public void testRemoveJpaEntityWithMongoDocument() {
-		TransactionTemplate txTemplate = new TransactionTemplate(transactionManager);
+
 		txTemplate.execute(new TransactionCallback<Person>() {
 			public Person doInTransaction(TransactionStatus status) {
 				Person p2 = new Person("Thomas", 20);
@@ -156,8 +184,10 @@ public class CrossStoreMongoTests {
 				return null;
 			}
 		});
+
 		boolean weFound3 = false;
-		for (DBObject dbo : this.mongoTemplate.getCollection(Person.class.getName()).find()) {
+
+		for (DBObject dbo : this.mongoTemplate.getCollection(mongoTemplate.getCollectionName(Person.class)).find()) {
 			Assert.assertTrue(!dbo.get("_entity_id").equals(2L));
 			if (dbo.get("_entity_id").equals(3L)) {
 				weFound3 = true;
--- a/spring-data-mongodb-cross-store/src/test/java/org/springframework/data/mongodb/crossstore/test/Address.java
+++ b/spring-data-mongodb-cross-store/src/test/java/org/springframework/data/mongodb/crossstore/test/Address.java
@@ -23,8 +23,7 @@ public class Address {
 	private String state;
 	private String zip;

-	public Address(Integer streetNumber, String streetName, String city,
-			String state, String zip) {
+	public Address(Integer streetNumber, String streetName, String city, String state, String zip) {
 		super();
 		this.streetNumber = streetNumber;
 		this.streetName = streetName;
@@ -36,34 +35,41 @@ public class Address {
 	public Integer getStreetNumber() {
 		return streetNumber;
 	}
+
 	public void setStreetNumber(Integer streetNumber) {
 		this.streetNumber = streetNumber;
 	}
+
 	public String getStreetName() {
 		return streetName;
 	}
+
 	public void setStreetName(String streetName) {
 		this.streetName = streetName;
 	}
+
 	public String getCity() {
 		return city;
 	}
+
 	public void setCity(String city) {
 		this.city = city;
 	}
+
 	public String getState() {
 		return state;
 	}
+
 	public void setState(String state) {
 		this.state = state;
 	}
+
 	public String getZip() {
 		return zip;
 	}
+
 	public void setZip(String zip) {
 		this.zip = zip;
 	}

-
-
 }
--- a/spring-data-mongodb-cross-store/src/test/resources/log4j.properties
+++ b/spring-data-mongodb-cross-store/src/test/resources/log4j.properties
@@ -1,12 +0,0 @@
-log4j.rootCategory=INFO, stdout
-
-log4j.appender.stdout=org.apache.log4j.ConsoleAppender
-log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
-log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %40.40c:%4L - %m%n
-
-log4j.category.org.springframework=INFO
-log4j.category.org.springframework.data=TRACE
-
-log4j.category.org.hibernate.SQL=DEBUG
-# for debugging datasource initialization
-# log4j.category.test.jdbc=DEBUG
--- a/spring-data-mongodb-cross-store/src/test/resources/logback.xml
+++ b/spring-data-mongodb-cross-store/src/test/resources/logback.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+
+	<appender name="console" class="ch.qos.logback.core.ConsoleAppender">
+		<encoder>
+			<pattern>%d %5p %40.40c:%4L - %m%n</pattern>
+		</encoder>
+	</appender>
+
+	<!-- 
+	<logger name="org.springframework" level="debug" />
+	 -->
+
+	<root level="error">
+		<appender-ref ref="console" />
+	</root>
+
+</configuration>
--- a/spring-data-mongodb-cross-store/template.mf
+++ b/spring-data-mongodb-cross-store/template.mf
@@ -0,0 +1,18 @@
+Bundle-SymbolicName: org.springframework.data.mongodb.crossstore
+Bundle-Name: Spring Data MongoDB Cross Store Support
+Bundle-Vendor: SpringSource
+Bundle-ManifestVersion: 2
+Import-Package: 
+ sun.reflect;version="0";resolution:=optional
+Export-Template:
+ org.springframework.data.mongodb.crossstore.*;version="${project.version}"
+Import-Template: 
+ com.mongodb.*;version="0",
+ javax.persistence.*;version="${jpa:[=.=.=,+1.0.0)}",
+ org.aspectj.*;version="${aspectj:[1.0.0, 2.0.0)}",
+ org.bson.*;version="0",
+ org.slf4j.*;version="${slf4j:[=.=.=,+1.0.0)}",
+ org.springframework.*;version="${spring30:[=.=.=.=,+1.0.0)}",
+ org.springframework.data.*;version="${springdata.commons:[=.=.=.=,+1.0.0)}",
+ org.springframework.data.mongodb.*;version="${project.version:[=.=.=.=,+1.0.0)}",
+ org.w3c.dom.*;version="0"
--- a/spring-data-mongodb-distribution/pom.xml
+++ b/spring-data-mongodb-distribution/pom.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+	<modelVersion>4.0.0</modelVersion>
+	
+	<artifactId>spring-data-mongodb-distribution</artifactId>
+
+	<packaging>pom</packaging>
+
+	<name>Spring Data MongoDB - Distribution</name>
+	<description>Distribution build for Spring Data MongoDB</description>
+
+	<parent>
+		<groupId>org.springframework.data</groupId>
+		<artifactId>spring-data-mongodb-parent</artifactId>
+		<version>1.2.5.BUILD-SNAPSHOT</version>
+		<relativePath>../pom.xml</relativePath>
+	</parent>
+	
+	<properties>
+		<project.root>${basedir}/..</project.root>
+		<dist.key>SDMONGO</dist.key>
+	</properties>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-assembly-plugin</artifactId>
+			</plugin>
+			<plugin>
+				<groupId>org.codehaus.mojo</groupId>
+				<artifactId>wagon-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>
--- a/spring-data-mongodb-log4j/README.md
+++ b/spring-data-mongodb-log4j/README.md
@@ -32,7 +32,7 @@ An example log entry might look like:
    {
      "_id" : ObjectId("4d89341a8ef397e06940d5cd"),
      "applicationId" : "my.application",
-      "name" : "org.springframework.data.mongodb.log4j.AppenderTest",
+      "name" : "org.springframework.data.mongodb.log4j.MongoLog4jAppenderIntegrationTests",
      "level" : "DEBUG",
      "timestamp" : ISODate("2011-03-23T16:53:46.778Z"),
      "properties" : {
--- a/spring-data-mongodb-log4j/pom.xml
+++ b/spring-data-mongodb-log4j/pom.xml
@@ -1,44 +1,30 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-  <modelVersion>4.0.0</modelVersion>
-  <parent>
-    <groupId>org.springframework.data</groupId>
-    <artifactId>spring-data-mongodb-parent</artifactId>
-    <version>1.0.2.RELEASE</version>
-    <relativePath>../spring-data-mongodb-parent/pom.xml</relativePath>
-  </parent>
-  <artifactId>spring-data-mongodb-log4j</artifactId>
-  <name>Spring Data MongoDB Log4J Appender</name>
+	<modelVersion>4.0.0</modelVersion>
+	
+	<parent>
+		<groupId>org.springframework.data</groupId>
+		<artifactId>spring-data-mongodb-parent</artifactId>
+		<version>1.2.5.BUILD-SNAPSHOT</version>
+		<relativePath>../pom.xml</relativePath>
+	</parent>

-  <properties>
-    <mongo.version>2.3</mongo.version>
-  </properties>
+	<artifactId>spring-data-mongodb-log4j</artifactId>
+	<name>Spring Data MongoDB - Log4J Appender</name>

-  <dependencies>
+	<properties>
+		<log4j>1.2.16</log4j>
+	</properties>

-    <!-- MongoDB -->
-    <dependency>
-      <groupId>org.mongodb</groupId>
-      <artifactId>mongo-java-driver</artifactId>
-      <version>${mongo.version}</version>
-    </dependency>
+	<dependencies>

-    <!-- Logging -->
-    <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
-      <scope>compile</scope>
-    </dependency>
+		<!-- Logging -->
+		<dependency>
+			<groupId>log4j</groupId>
+			<artifactId>log4j</artifactId>
+			<version>${log4j}</version>
+		</dependency>

-  </dependencies>
-
-  <build>
-    <plugins>
-      <plugin>
-        <groupId>com.springsource.bundlor</groupId>
-        <artifactId>com.springsource.bundlor.maven</artifactId>
-      </plugin>
-    </plugins>
-  </build>
+	</dependencies>

 </project>
--- a/spring-data-mongodb-log4j/src/main/java/org/springframework/data/mongodb/log4j/MongoLog4jAppender.java
+++ b/spring-data-mongodb-log4j/src/main/java/org/springframework/data/mongodb/log4j/MongoLog4jAppender.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -13,7 +13,6 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.log4j;

 import java.net.UnknownHostException;
@@ -21,188 +20,207 @@ import java.util.Arrays;
 import java.util.Calendar;
 import java.util.Map;

-import com.mongodb.BasicDBList;
-import com.mongodb.BasicDBObject;
-import com.mongodb.DB;
-import com.mongodb.Mongo;
-import com.mongodb.WriteConcern;
 import org.apache.log4j.AppenderSkeleton;
 import org.apache.log4j.Level;
 import org.apache.log4j.MDC;
 import org.apache.log4j.PatternLayout;
 import org.apache.log4j.spi.LoggingEvent;

+import com.mongodb.BasicDBList;
+import com.mongodb.BasicDBObject;
+import com.mongodb.DB;
+import com.mongodb.Mongo;
+import com.mongodb.WriteConcern;
+
 /**
- * @author Jon Brisbin <jbrisbin@vmware.com>
+ * Log4j appender writing log entries into a MongoDB instance.
+ * 
+ * @author Jon Brisbin
+ * @author Oliver Gierke
 */
 public class MongoLog4jAppender extends AppenderSkeleton {

-  public static final String LEVEL = "level";
-  public static final String NAME = "name";
-  public static final String APP_ID = "applicationId";
-  public static final String TIMESTAMP = "timestamp";
-  public static final String PROPERTIES = "properties";
-  public static final String TRACEBACK = "traceback";
-  public static final String MESSAGE = "message";
-  public static final String YEAR = "year";
-  public static final String MONTH = "month";
-  public static final String DAY = "day";
-  public static final String HOUR = "hour";
+	public static final String LEVEL = "level";
+	public static final String NAME = "name";
+	public static final String APP_ID = "applicationId";
+	public static final String TIMESTAMP = "timestamp";
+	public static final String PROPERTIES = "properties";
+	public static final String TRACEBACK = "traceback";
+	public static final String MESSAGE = "message";
+	public static final String YEAR = "year";
+	public static final String MONTH = "month";
+	public static final String DAY = "day";
+	public static final String HOUR = "hour";

-  protected String host = "localhost";
-  protected int port = 27017;
-  protected String database = "logs";
-  protected String collectionPattern = "%c";
-  protected PatternLayout collectionLayout = new PatternLayout(collectionPattern);
-  protected String applicationId = System.getProperty("APPLICATION_ID", null);
-  protected WriteConcern warnOrHigherWriteConcern = WriteConcern.SAFE;
-  protected WriteConcern infoOrLowerWriteConcern = WriteConcern.NORMAL;
-  protected Mongo mongo;
-  protected DB db;
+	protected String host = "localhost";
+	protected int port = 27017;
+	protected String database = "logs";
+	protected String collectionPattern = "%c";
+	protected PatternLayout collectionLayout = new PatternLayout(collectionPattern);
+	protected String applicationId = System.getProperty("APPLICATION_ID", null);
+	protected WriteConcern warnOrHigherWriteConcern = WriteConcern.SAFE;
+	protected WriteConcern infoOrLowerWriteConcern = WriteConcern.NORMAL;
+	protected Mongo mongo;
+	protected DB db;

-  public MongoLog4jAppender() {
-  }
+	public MongoLog4jAppender() {
+	}

-  public MongoLog4jAppender(boolean isActive) {
-    super(isActive);
-  }
+	public MongoLog4jAppender(boolean isActive) {
+		super(isActive);
+	}

-  public String getHost() {
-    return host;
-  }
+	public String getHost() {
+		return host;
+	}

-  public void setHost(String host) {
-    this.host = host;
-  }
+	public void setHost(String host) {
+		this.host = host;
+	}

-  public int getPort() {
-    return port;
-  }
+	public int getPort() {
+		return port;
+	}

-  public void setPort(int port) {
-    this.port = port;
-  }
+	public void setPort(int port) {
+		this.port = port;
+	}

-  public String getDatabase() {
-    return database;
-  }
+	public String getDatabase() {
+		return database;
+	}

-  public void setDatabase(String database) {
-    this.database = database;
-  }
+	public void setDatabase(String database) {
+		this.database = database;
+	}

-  public String getCollectionPattern() {
-    return collectionPattern;
-  }
+	public String getCollectionPattern() {
+		return collectionPattern;
+	}

-  public void setCollectionPattern(String collectionPattern) {
-    this.collectionPattern = collectionPattern;
-    this.collectionLayout = new PatternLayout(collectionPattern);
-  }
+	public void setCollectionPattern(String collectionPattern) {
+		this.collectionPattern = collectionPattern;
+		this.collectionLayout = new PatternLayout(collectionPattern);
+	}

-  public String getApplicationId() {
-    return applicationId;
-  }
+	public String getApplicationId() {
+		return applicationId;
+	}

-  public void setApplicationId(String applicationId) {
-    this.applicationId = applicationId;
-  }
+	public void setApplicationId(String applicationId) {
+		this.applicationId = applicationId;
+	}

-  public void setWarnOrHigherWriteConcern(String wc) {
-    this.warnOrHigherWriteConcern = WriteConcern.valueOf(wc);
-  }
+	public void setWarnOrHigherWriteConcern(String wc) {
+		this.warnOrHigherWriteConcern = WriteConcern.valueOf(wc);
+	}

-  public String getWarnOrHigherWriteConcern() {
-    return warnOrHigherWriteConcern.toString();
-  }
+	public String getWarnOrHigherWriteConcern() {
+		return warnOrHigherWriteConcern.toString();
+	}

-  public String getInfoOrLowerWriteConcern() {
-    return infoOrLowerWriteConcern.toString();
-  }
+	public String getInfoOrLowerWriteConcern() {
+		return infoOrLowerWriteConcern.toString();
+	}

-  public void setInfoOrLowerWriteConcern(String wc) {
-    this.infoOrLowerWriteConcern = WriteConcern.valueOf(wc);
-  }
+	public void setInfoOrLowerWriteConcern(String wc) {
+		this.infoOrLowerWriteConcern = WriteConcern.valueOf(wc);
+	}

-  protected void connectToMongo() throws UnknownHostException {
-    this.mongo = new Mongo(host, port);
-    this.db = mongo.getDB(database);
-  }
+	protected void connectToMongo() throws UnknownHostException {
+		this.mongo = new Mongo(host, port);
+		this.db = mongo.getDB(database);
+	}

-  @SuppressWarnings({"unchecked"})
-  @Override
-  protected void append(final LoggingEvent event) {
-    if (null == db) {
-      try {
-        connectToMongo();
-      } catch (UnknownHostException e) {
-        throw new RuntimeException(e.getMessage(), e);
-      }
-    }
+	/*
+	 * (non-Javadoc)
+	 * @see org.apache.log4j.AppenderSkeleton#append(org.apache.log4j.spi.LoggingEvent)
+	 */
+	@Override
+	@SuppressWarnings({ "unchecked" })
+	protected void append(final LoggingEvent event) {
+		if (null == db) {
+			try {
+				connectToMongo();
+			} catch (UnknownHostException e) {
+				throw new RuntimeException(e.getMessage(), e);
+			}
+		}

-    BasicDBObject dbo = new BasicDBObject();
-    if (null != applicationId) {
-      dbo.put(APP_ID, applicationId);
-      MDC.put(APP_ID, applicationId);
-    }
-    dbo.put(NAME, event.getLogger().getName());
-    dbo.put(LEVEL, event.getLevel().toString());
-    Calendar tstamp = Calendar.getInstance();
-    tstamp.setTimeInMillis(event.getTimeStamp());
-    dbo.put(TIMESTAMP, tstamp.getTime());
+		BasicDBObject dbo = new BasicDBObject();
+		if (null != applicationId) {
+			dbo.put(APP_ID, applicationId);
+			MDC.put(APP_ID, applicationId);
+		}
+		dbo.put(NAME, event.getLogger().getName());
+		dbo.put(LEVEL, event.getLevel().toString());
+		Calendar tstamp = Calendar.getInstance();
+		tstamp.setTimeInMillis(event.getTimeStamp());
+		dbo.put(TIMESTAMP, tstamp.getTime());

-    // Copy properties into document
-    Map<Object, Object> props = event.getProperties();
-    if (null != props && props.size() > 0) {
-      BasicDBObject propsDbo = new BasicDBObject();
-      for (Map.Entry<Object, Object> entry : props.entrySet()) {
-        propsDbo.put(entry.getKey().toString(), entry.getValue().toString());
-      }
-      dbo.put(PROPERTIES, propsDbo);
-    }
+		// Copy properties into document
+		Map<Object, Object> props = event.getProperties();
+		if (null != props && props.size() > 0) {
+			BasicDBObject propsDbo = new BasicDBObject();
+			for (Map.Entry<Object, Object> entry : props.entrySet()) {
+				propsDbo.put(entry.getKey().toString(), entry.getValue().toString());
+			}
+			dbo.put(PROPERTIES, propsDbo);
+		}

-    // Copy traceback info (if there is any) into the document
-    String[] traceback = event.getThrowableStrRep();
-    if (null != traceback && traceback.length > 0) {
-      BasicDBList tbDbo = new BasicDBList();
-      tbDbo.addAll(Arrays.asList(traceback));
-      dbo.put(TRACEBACK, tbDbo);
-    }
+		// Copy traceback info (if there is any) into the document
+		String[] traceback = event.getThrowableStrRep();
+		if (null != traceback && traceback.length > 0) {
+			BasicDBList tbDbo = new BasicDBList();
+			tbDbo.addAll(Arrays.asList(traceback));
+			dbo.put(TRACEBACK, tbDbo);
+		}

-    // Put the rendered message into the document
-    dbo.put(MESSAGE, event.getRenderedMessage());
+		// Put the rendered message into the document
+		dbo.put(MESSAGE, event.getRenderedMessage());

-    // Insert the document
-    Calendar now = Calendar.getInstance();
-    MDC.put(YEAR, now.get(Calendar.YEAR));
-    MDC.put(MONTH, String.format("%1$02d", now.get(Calendar.MONTH) + 1));
-    MDC.put(DAY, String.format("%1$02d", now.get(Calendar.DAY_OF_MONTH)));
-    MDC.put(HOUR, String.format("%1$02d", now.get(Calendar.HOUR_OF_DAY)));
+		// Insert the document
+		Calendar now = Calendar.getInstance();
+		MDC.put(YEAR, now.get(Calendar.YEAR));
+		MDC.put(MONTH, String.format("%1$02d", now.get(Calendar.MONTH) + 1));
+		MDC.put(DAY, String.format("%1$02d", now.get(Calendar.DAY_OF_MONTH)));
+		MDC.put(HOUR, String.format("%1$02d", now.get(Calendar.HOUR_OF_DAY)));

-    String coll = collectionLayout.format(event);
+		String coll = collectionLayout.format(event);

-    MDC.remove(YEAR);
-    MDC.remove(MONTH);
-    MDC.remove(DAY);
-    MDC.remove(HOUR);
-    if (null != applicationId) {
-      MDC.remove(APP_ID);
-    }
+		MDC.remove(YEAR);
+		MDC.remove(MONTH);
+		MDC.remove(DAY);
+		MDC.remove(HOUR);
+		if (null != applicationId) {
+			MDC.remove(APP_ID);
+		}

-    WriteConcern wc;
-    if (event.getLevel().isGreaterOrEqual(Level.WARN)) {
-      wc = warnOrHigherWriteConcern;
-    } else {
-      wc = infoOrLowerWriteConcern;
-    }
-    db.getCollection(coll).insert(dbo, wc);
-  }
+		WriteConcern wc;
+		if (event.getLevel().isGreaterOrEqual(Level.WARN)) {
+			wc = warnOrHigherWriteConcern;
+		} else {
+			wc = infoOrLowerWriteConcern;
+		}
+		db.getCollection(coll).insert(dbo, wc);
+	}

-  public void close() {
-    mongo.close();
-  }
+	/*
+	 * (non-Javadoc)
+	 * @see org.apache.log4j.AppenderSkeleton#close()
+	 */
+	public void close() {

-  public boolean requiresLayout() {
-    return true;
-  }
+		if (mongo != null) {
+			mongo.close();
+		}
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.apache.log4j.AppenderSkeleton#requiresLayout()
+	 */
+	public boolean requiresLayout() {
+		return true;
+	}
 }
--- a/spring-data-mongodb-log4j/src/main/java/org/springframework/data/mongodb/log4j/package-info.java
+++ b/spring-data-mongodb-log4j/src/main/java/org/springframework/data/mongodb/log4j/package-info.java
@@ -0,0 +1,5 @@
+/**
+ * Infrastructure for to use MongoDB as a logging sink.
+ */
+package org.springframework.data.mongodb.log4j;
+
--- a/spring-data-mongodb-log4j/src/test/java/org/springframework/data/mongodb/log4j/AppenderTest.java
+++ b/spring-data-mongodb-log4j/src/test/java/org/springframework/data/mongodb/log4j/AppenderTest.java
@@ -1,75 +0,0 @@
-/*
- * Copyright (c) 2011 by the original author(s).
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.springframework.data.mongodb.log4j;
-
-import static org.hamcrest.Matchers.*;
-import static org.junit.Assert.*;
-
-import java.net.UnknownHostException;
-import java.util.Calendar;
-
-import com.mongodb.DB;
-import com.mongodb.DBCursor;
-import com.mongodb.Mongo;
-import org.apache.log4j.Logger;
-import org.apache.log4j.MDC;
-import org.junit.Before;
-import org.junit.Test;
-
-/**
- * @author Jon Brisbin <jbrisbin@vmware.com>
- */
-public class AppenderTest {
-
-  private static final String NAME = AppenderTest.class.getName();
-  private Logger log = Logger.getLogger(NAME);
-  private Mongo mongo;
-  private DB db;
-  private String collection;
-
-  @Before
-  public void setup() {
-    try {
-      mongo = new Mongo("localhost", 27017);
-      db = mongo.getDB("logs");
-      Calendar now = Calendar.getInstance();
-      collection = String.valueOf(now.get(Calendar.YEAR)) + String.format("%1$02d", now.get(Calendar.MONTH) + 1);
-      db.getCollection(collection).drop();
-    } catch (UnknownHostException e) {
-      throw new RuntimeException(e.getMessage(), e);
-    }
-  }
-
-  @Test
-  public void testLogging() {
-    log.debug("DEBUG message");
-    log.info("INFO message");
-    log.warn("WARN message");
-    log.error("ERROR message");
-
-    DBCursor msgs = db.getCollection(collection).find();
-    assertThat(msgs.count(), is(4));
-
-  }
-
-  @Test
-  public void testProperties() {
-    MDC.put("property", "one");
-    log.debug("DEBUG message");
-  }
-
-}
--- a/spring-data-mongodb-log4j/src/test/java/org/springframework/data/mongodb/log4j/MongoLog4jAppenderIntegrationTests.java
+++ b/spring-data-mongodb-log4j/src/test/java/org/springframework/data/mongodb/log4j/MongoLog4jAppenderIntegrationTests.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2011-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.log4j;
+
+import static org.hamcrest.Matchers.*;
+import static org.junit.Assert.*;
+
+import java.util.Calendar;
+
+import org.apache.log4j.Logger;
+import org.apache.log4j.MDC;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.mongodb.DB;
+import com.mongodb.DBCursor;
+import com.mongodb.Mongo;
+
+/**
+ * Integration tests for {@link MongoLog4jAppender}.
+ * 
+ * @author Jon Brisbin
+ * @author Oliver Gierke
+ */
+public class MongoLog4jAppenderIntegrationTests {
+
+	static final String NAME = MongoLog4jAppenderIntegrationTests.class.getName();
+
+	Logger log = Logger.getLogger(NAME);
+	Mongo mongo;
+	DB db;
+	String collection;
+
+	@Before
+	public void setUp() throws Exception {
+
+		mongo = new Mongo("localhost", 27017);
+		db = mongo.getDB("logs");
+
+		Calendar now = Calendar.getInstance();
+		collection = String.valueOf(now.get(Calendar.YEAR)) + String.format("%1$02d", now.get(Calendar.MONTH) + 1);
+		db.getCollection(collection).drop();
+	}
+
+	@Test
+	public void testLogging() {
+
+		log.debug("DEBUG message");
+		log.info("INFO message");
+		log.warn("WARN message");
+		log.error("ERROR message");
+
+		DBCursor msgs = db.getCollection(collection).find();
+
+		assertThat(msgs.count(), is(4));
+	}
+
+	@Test
+	public void testProperties() {
+
+		MDC.put("property", "one");
+		log.debug("DEBUG message");
+	}
+}
--- a/spring-data-mongodb-log4j/src/test/java/org/springframework/data/mongodb/log4j/MongoLog4jAppenderUnitTests.java
+++ b/spring-data-mongodb-log4j/src/test/java/org/springframework/data/mongodb/log4j/MongoLog4jAppenderUnitTests.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.log4j;
+
+import org.junit.Test;
+
+/**
+ * Unit tests for {@link MongoLog4jAppender}.
+ * 
+ * @author Oliver Gierke
+ */
+public class MongoLog4jAppenderUnitTests {
+
+	/**
+	 * @see DATAMONGO-641
+	 */
+	@Test
+	public void closesWithoutMongoInstancePresent() {
+		new MongoLog4jAppender().close();
+	}
+}
--- a/spring-data-mongodb-log4j/src/test/resources/log4j.properties
+++ b/spring-data-mongodb-log4j/src/test/resources/log4j.properties
@@ -10,11 +10,4 @@ log4j.appender.stdout.collectionPattern = %X{year}%X{month}
 log4j.appender.stdout.applicationId = my.application
 log4j.appender.stdout.warnOrHigherWriteConcern = FSYNC_SAFE

-log4j.category.org.apache.activemq=ERROR
-log4j.category.org.springframework.batch=DEBUG
-log4j.category.org.springframework.data.document.mongodb=DEBUG
-log4j.category.org.springframework.transaction=INFO
-
-log4j.category.org.hibernate.SQL=DEBUG
-# for debugging datasource initialization
-# log4j.category.test.jdbc=DEBUG
+log4j.category.org.springframework.data.mongodb=DEBUG
--- a/spring-data-mongodb-log4j/template.mf
+++ b/spring-data-mongodb-log4j/template.mf
@@ -5,6 +5,5 @@ Bundle-ManifestVersion: 2
 Import-Package:
 sun.reflect;version="0";resolution:=optional
 Import-Template:
- com.mongodb.*;version="${mongo.version:[=.=,+1.0.0)}",
- org.apache.log4j.*;version="[1.2.15, 2.0.0)",
- org.apache.log4j.spi.*;version="[1.2.15, 2.0.0)"
+ com.mongodb.*;version="${mongo:[=.=,+1.0.0)}",
+ org.apache.log4j.*;version="${log4j:[=.=.=,+1.0.0)}"
--- a/spring-data-mongodb-parent/pom.xml
+++ b/spring-data-mongodb-parent/pom.xml
@@ -1,405 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>org.springframework.data</groupId>
-  <artifactId>spring-data-mongodb-parent</artifactId>
-  <name>Spring Data MongoDB Parent</name>
-  <description>Spring Data project for MongoDB</description>
-  <url>http://www.springsource.org/spring-data/mongodb</url>
-  <version>1.0.2.RELEASE</version>
-  <packaging>pom</packaging>
-  <properties>
-    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <!-- versions for commonly-used dependencies -->
-    <junit.version>4.10</junit.version>
-    <log4j.version>1.2.16</log4j.version>
-    <org.mockito.version>1.8.4</org.mockito.version>
-    <hamcrest.version>1.2.1</hamcrest.version>
-    <org.slf4j.version>1.5.10</org.slf4j.version>
-    <org.codehaus.jackson.version>1.6.1</org.codehaus.jackson.version>
-    <org.springframework.version.30>3.0.7.RELEASE</org.springframework.version.30>
-    <org.springframework.version.40>4.0.0.RELEASE</org.springframework.version.40>
-    <org.springframework.version.range>[${org.springframework.version.30}, ${org.springframework.version.40})</org.springframework.version.range>
-    <data.commons.version>1.2.1.RELEASE</data.commons.version>
-    <aspectj.version>1.6.11.RELEASE</aspectj.version>
-  </properties>
-
-  <developers>
-    <developer>
-      <id>ogierke</id>
-      <name>Oliver Gierke</name>
-      <email>ogierke at vmware.com</email>
-      <organization>SpringSource</organization>
-      <organizationUrl>http://www.springsource.com</organizationUrl>
-      <roles>
-        <role>Project lead</role>
-      </roles>
-      <timezone>+1</timezone>
-    </developer>
-    <developer>
-      <id>trisberg</id>
-      <name>Thomas Risberg</name>
-      <email>trisberg at vmware.com</email>
-      <organization>SpringSource</organization>
-      <organizationUrl>http://www.SpringSource.com</organizationUrl>
-      <roles>
-        <role>Project Admin</role>
-        <role>Developer</role>
-      </roles>
-      <timezone>-5</timezone>
-    </developer>
-    <developer>
-      <id>mpollack</id>
-      <name>Mark Pollack</name>
-      <email>mpollack at vmware.com</email>
-      <organization>SpringSource</organization>
-      <organizationUrl>http://www.SpringSource.com</organizationUrl>
-      <roles>
-        <role>Project Admin</role>
-        <role>Developer</role>
-      </roles>
-      <timezone>-5</timezone>
-    </developer>
-    <developer>
-      <id>jbrisbin</id>
-      <name>Jon Brisbin</name>
-      <email>jbrisbin at vmware.com</email>
-      <organization>SpringSource</organization>
-      <organizationUrl>http://www.springsource.com</organizationUrl>
-      <roles>
-        <role>Developer</role>
-      </roles>
-      <timezone>-6</timezone>
-    </developer>
-  </developers>
-
-  <licenses>
-    <license>
-      <name>Apache License, Version 2.0</name>
-      <url>http://www.apache.org/licenses/LICENSE-2.0</url>
-      <comments>
-        Copyright 2010 the original author or authors.
-
-        Licensed under the Apache License, Version 2.0 (the "License");
-        you may not use this file except in compliance with the License.
-        You may obtain a copy of the License at
-
-        http://www.apache.org/licenses/LICENSE-2.0
-
-        Unless required by applicable law or agreed to in writing, software
-        distributed under the License is distributed on an "AS IS" BASIS,
-        WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-        implied.
-        See the License for the specific language governing permissions and
-        limitations under the License.
-      </comments>
-    </license>
-  </licenses>
-
-  <distributionManagement>
-    <!-- see 'staging' profile for dry-run deployment settings -->
-    <downloadUrl>http://www.springsource.com/download/community
-    </downloadUrl>
-    <site>
-      <id>static.springframework.org</id>
-      <url>
-        scp://static.springframework.org/var/www/domains/springframework.org/static/htdocs/spring-data/data-mongodb/snapshot-site
-      </url>
-    </site>
-    <repository>
-      <id>spring-release</id>
-      <name>Spring Release Repository</name>
-      <url>s3://maven.springframework.org/release</url>
-    </repository>
-    <snapshotRepository>
-      <id>spring-snapshot</id>
-      <name>Spring Snapshot Repository</name>
-      <url>s3://maven.springframework.org/snapshot</url>
-    </snapshotRepository>
-  </distributionManagement>
-  <scm>
-  	<url>https://github.com/SpringSource/spring-data-mongodb</url>
-  </scm>
-  <dependencyManagement>
-    <!--
-        inheritable <dependency> declarations for child poms. children still
-        must explicitly declare the groupId/artifactId of these dependencies
-        in order for them to show up on the classpath, but metadata like
-        <version> and <scope> are inherited, which cuts down on verbosity.
-        see
-        http://www.sonatype.com/books/mvnref-book/reference/pom-relationships-sect-dep-manage.html
-      -->
-    <dependencies>
-
-      <!--  Spring -->
-      <dependency>
-        <groupId>org.springframework</groupId>
-        <artifactId>spring-aop</artifactId>
-        <version>${org.springframework.version.range}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.springframework</groupId>
-        <artifactId>spring-beans</artifactId>
-        <version>${org.springframework.version.range}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.springframework</groupId>
-        <artifactId>spring-core</artifactId>
-        <version>${org.springframework.version.range}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.springframework</groupId>
-        <artifactId>spring-tx</artifactId>
-        <version>${org.springframework.version.range}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.springframework</groupId>
-        <artifactId>spring-context</artifactId>
-        <version>${org.springframework.version.range}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.springframework</groupId>
-        <artifactId>spring-orm</artifactId>
-        <version>${org.springframework.version.range}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.springframework</groupId>
-        <artifactId>spring-web</artifactId>
-        <version>${org.springframework.version.range}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.springframework</groupId>
-        <artifactId>spring-expression</artifactId>
-        <version>${org.springframework.version.range}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.springframework</groupId>
-        <artifactId>spring-test</artifactId>
-        <version>${org.springframework.version.range}</version>
-        <scope>test</scope>
-      </dependency>
-
-      <!--  Spring Data -->
-      <dependency>
-        <groupId>org.springframework.data</groupId>
-        <artifactId>spring-data-commons-core</artifactId>
-        <version>${data.commons.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.springframework.data</groupId>
-        <artifactId>spring-data-commons-aspects</artifactId>
-        <version>${data.commons.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.springframework.data</groupId>
-        <artifactId>spring-data-couchdb</artifactId>
-        <version>${project.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.springframework.data</groupId>
-        <artifactId>spring-data-mongodb</artifactId>
-        <version>1.0.2.RELEASE</version>
-      </dependency>
-
-      <!-- Logging -->
-      <dependency>
-        <groupId>org.slf4j</groupId>
-        <artifactId>slf4j-api</artifactId>
-        <version>${org.slf4j.version}</version>
-        <scope>runtime</scope>
-      </dependency>
-      <dependency>
-        <groupId>org.slf4j</groupId>
-        <artifactId>jcl-over-slf4j</artifactId>
-        <version>${org.slf4j.version}</version>
-        <scope>runtime</scope>
-      </dependency>
-      <dependency>
-        <groupId>org.slf4j</groupId>
-        <artifactId>slf4j-log4j12</artifactId>
-        <version>${org.slf4j.version}</version>
-        <scope>runtime</scope>
-      </dependency>
-      <dependency>
-        <groupId>log4j</groupId>
-        <artifactId>log4j</artifactId>
-        <version>${log4j.version}</version>
-        <scope>runtime</scope>
-      </dependency>
-
-      <dependency>
-        <groupId>javax.annotation</groupId>
-        <artifactId>jsr250-api</artifactId>
-        <version>1.0</version>
-        <optional>true</optional>
-      </dependency>
-
-      <dependency>
-        <groupId>org.mockito</groupId>
-        <artifactId>mockito-core</artifactId>
-        <version>${org.mockito.version}</version>
-        <scope>test</scope>
-      </dependency>
-
-      <dependency>
-        <groupId>junit</groupId>
-        <artifactId>junit-dep</artifactId>
-        <version>${junit.version}</version>
-        <scope>test</scope>
-      </dependency>
-
-    </dependencies>
-  </dependencyManagement>
-  <dependencies>
-    
-    <!-- Test dependencies -->
-    <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
-      <version>${log4j.version}</version>
-      <scope>test</scope>
-    </dependency>
-    
-    <dependency>
-      <groupId>org.hamcrest</groupId>
-      <artifactId>hamcrest-library</artifactId>
-      <version>${hamcrest.version}</version>
-      <scope>test</scope>
-    </dependency>
-    
-    <dependency>
-      <groupId>org.mockito</groupId>
-      <artifactId>mockito-core</artifactId>
-      <scope>test</scope>
-    </dependency>
-
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit-dep</artifactId>
-      <scope>test</scope>
-    </dependency>
-    
-  </dependencies>
-
-  <build>
-    <extensions>
-      <extension>
-        <!--
-              available only in the springframework maven repository. see
-              <repositories> section below
-            -->
-        <groupId>org.springframework.build.aws</groupId>
-        <artifactId>org.springframework.build.aws.maven</artifactId>
-        <version>3.1.0.RELEASE</version>
-      </extension>
-    </extensions>
-    <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.4</version>
-        <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
-          <compilerArgument>-Xlint:-path</compilerArgument>
-          <showWarnings>true</showWarnings>
-          <showDeprecation>false</showDeprecation>
-        </configuration>
-      </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-jar-plugin</artifactId>
-        <version>2.3.1</version>
-        <configuration>
-           <useDefaultManifestFile>true</useDefaultManifestFile>
-        </configuration>
-      </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-surefire-plugin</artifactId>
-        <version>2.10</version>
-        <configuration>
-          <useFile>false</useFile>
-          <includes>
-            <include>**/*Tests.java</include>
-          </includes>
-          <junitArtifactName>junit:junit-dep</junitArtifactName>
-        </configuration>
-      </plugin>
-      <plugin>
-        <artifactId>maven-source-plugin</artifactId>
-        <version>2.1.2</version>
-        <executions>
-          <execution>
-            <id>attach-sources</id>
-            <goals>
-              <goal>jar</goal>
-            </goals>
-          </execution>
-        </executions>
-      </plugin>
-    </plugins>
-    <pluginManagement>
-      <plugins>
-        <plugin>
-          <!--
-                 configures the springsource bundlor plugin, which generates
-                 OSGI-compatible MANIFEST.MF files during the 'compile' phase of
-                 the maven build. this plugin is declared within the
-                 pluginManagement section because not every module that inherits
-                 from this pom needs bundlor's services, e.g.:
-                 spring-integration-samples and all its children. for this reason,
-                 all modules that wish to use bundlor must declare it explicitly.
-                 it is not necessary to specify the <version> or <configuration>
-                 sections, but groupId and artifactId are required. see
-                 http://static.springsource.org/s2-bundlor/1.0.x/user-guide/html/ch04s03.html
-                 for more info
-               -->
-          <groupId>com.springsource.bundlor</groupId>
-          <artifactId>com.springsource.bundlor.maven</artifactId>
-          <version>1.0.0.RELEASE</version>
-          <configuration>
-            <failOnWarnings>true</failOnWarnings>
-          </configuration>
-          <executions>
-            <execution>
-              <id>bundlor</id>
-              <goals>
-                <goal>bundlor</goal>
-              </goals>
-            </execution>
-          </executions>
-        </plugin>
-      </plugins>
-    </pluginManagement>
-  </build>
-  <pluginRepositories>
-    <pluginRepository>
-      <id>spring-plugins-release</id>
-      <url>http://repo.springsource.org/plugins-release</url>
-    </pluginRepository>
-  </pluginRepositories>
-  <repositories>
-    <repository>
-      <id>spring-libs-release</id>
-      <url>http://repo.springsource.org/libs-release</url>
-    </repository>
-  </repositories>
-  <reporting>
-    <plugins>
-      <plugin>
-        <!--
-              significantly speeds up the 'Dependencies' report during site
-              creation see
-              http://old.nabble.com/Skipping-dependency-report-during-Maven2-site-generation-td20116761.html
-            -->
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-project-info-reports-plugin</artifactId>
-        <version>2.1</version>
-        <configuration>
-          <dependencyLocationsEnabled>false</dependencyLocationsEnabled>
-        </configuration>
-      </plugin>
-    </plugins>
-  </reporting>
-</project>
--- a/spring-data-mongodb/Spring
+++ b/spring-data-mongodb/Spring
@@ -49,6 +49,12 @@
                </element>
                <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core"/>
            </element>
+            <element name="GridFS" type="Layer">
+                <element name="Assignment" type="TypeFilter">
+                    <element name="**.gridfs.**" type="IncludeTypePattern"/>
+                </element>
+                <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core"/>
+            </element>
            <element name="Core" type="Layer">
                <element name="Assignment" type="TypeFilter">
                    <element name="**.core.**" type="IncludeTypePattern"/>
--- a/spring-data-mongodb/pom.xml
+++ b/spring-data-mongodb/pom.xml
@@ -1,137 +1,155 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
 	<modelVersion>4.0.0</modelVersion>
+	
+	<artifactId>spring-data-mongodb</artifactId>
+
+	<name>Spring Data MongoDB - Core</name>
+	<description>MongoDB support for Spring Data</description>
+
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>1.0.2.RELEASE</version>
-		<relativePath>../spring-data-mongodb-parent/pom.xml</relativePath>
+		<version>1.2.5.BUILD-SNAPSHOT</version>
+		<relativePath>../pom.xml</relativePath>
 	</parent>
-	<artifactId>spring-data-mongodb</artifactId>
-	<name>Spring Data MongoDB</name>

 	<properties>
-		<mongo.version>2.7.1</mongo.version>
-		<querydsl.version>2.3.0</querydsl.version>
+		<validation>1.0.0.GA</validation>
 	</properties>

 	<dependencies>
-
+		
 		<!--  Spring -->
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-tx</artifactId>
+			<version>${spring}</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-context</artifactId>
+			<version>${spring}</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-beans</artifactId>
+			<version>${spring}</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-core</artifactId>
+			<version>${spring}</version>
+			<exclusions>
+				<exclusion>
+					<groupId>commons-logging</groupId>
+					<artifactId>commons-logging</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-expression</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>org.springframework</groupId>
-			<artifactId>spring-test</artifactId>
-			<scope>test</scope>
+			<version>${spring}</version>
 		</dependency>

 		<!--  Spring Data -->
-		<dependency>
-			<groupId>org.springframework.data</groupId>
-			<artifactId>spring-data-commons-core</artifactId>
-			<version>${data.commons.version}</version>
-		</dependency>
-
-		<!-- MongoDB -->
-		<dependency>
-			<groupId>org.mongodb</groupId>
-			<artifactId>mongo-java-driver</artifactId>
-			<version>${mongo.version}</version>
-			<exclusions>
-				<exclusion>
-					<groupId>javax.persistence</groupId>
-					<artifactId>persistence-api</artifactId>
-				</exclusion>
-			</exclusions>
+			<dependency>
+			<groupId>${project.groupId}</groupId>
+			<artifactId>spring-data-commons</artifactId>
+			<version>${springdata.commons}</version>
 		</dependency>

 		<dependency>
 			<groupId>com.mysema.querydsl</groupId>
 			<artifactId>querydsl-mongodb</artifactId>
-			<version>${querydsl.version}</version>
+			<version>${querydsl}</version>
 			<optional>true</optional>
-			<exclusions>
-				<exclusion>
-					<groupId>com.google.code.morphia</groupId>
-					<artifactId>morphia</artifactId>
-				</exclusion>
-			</exclusions>
 		</dependency>

 		<dependency>
 			<groupId>com.mysema.querydsl</groupId>
 			<artifactId>querydsl-apt</artifactId>
-			<version>${querydsl.version}</version>
+			<version>${querydsl}</version>
 			<scope>provided</scope>
 		</dependency>

 		<dependency>
 			<groupId>javax.annotation</groupId>
 			<artifactId>jsr250-api</artifactId>
+			<version>1.0</version>
 			<optional>true</optional>
 		</dependency>
-
-		<!-- Test dependencies -->
+		
+		<!-- CDI -->
 		<dependency>
-			<groupId>joda-time</groupId>
-			<artifactId>joda-time</artifactId>
-			<version>1.6</version>
-			<scope>test</scope>
-		</dependency>
-
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-api</artifactId>
+			<groupId>javax.enterprise</groupId>
+			<artifactId>cdi-api</artifactId>
+			<version>${cdi}</version>
+			<scope>provided</scope>
+			<optional>true</optional>
 		</dependency>
 		
 		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>jcl-over-slf4j</artifactId>
+			<groupId>javax.el</groupId>
+			<artifactId>el-api</artifactId>
+			<version>${cdi}</version>
 			<scope>test</scope>
 		</dependency>
+		
 		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-log4j12</artifactId>
+			<groupId>org.apache.openwebbeans.test</groupId>
+			<artifactId>cditest-owb</artifactId>
+			<version>${webbeans}</version>
 			<scope>test</scope>
 		</dependency>
+		
 		<dependency>
-			<groupId>log4j</groupId>
-			<artifactId>log4j</artifactId>
+			<groupId>javax.servlet</groupId>
+			<artifactId>servlet-api</artifactId>
+			<version>2.5</version>
 			<scope>test</scope>
 		</dependency>

+		<!-- JSR 303 Validation -->
+		<dependency>
+			<groupId>javax.validation</groupId>
+			<artifactId>validation-api</artifactId>
+			<version>${validation}</version>
+			<optional>true</optional>
+		</dependency>
+
+		<dependency>
+			<groupId>org.hibernate</groupId>
+			<artifactId>hibernate-validator</artifactId>
+			<version>4.2.0.Final</version>
+			<scope>test</scope>
+		</dependency>
+		
+		<dependency>
+			<groupId>joda-time</groupId>
+			<artifactId>joda-time</artifactId>
+			<version>${jodatime}</version>
+			<scope>test</scope>
+		</dependency>
+		
 	</dependencies>
 	
 	<build>
 		<plugins>
-			<plugin>
-				<groupId>com.springsource.bundlor</groupId>
-				<artifactId>com.springsource.bundlor.maven</artifactId>
-			</plugin>

 			<plugin>
 				<groupId>com.mysema.maven</groupId>
 				<artifactId>maven-apt-plugin</artifactId>
-				<version>1.0.2</version>
+				<version>1.0.4</version>
+				<dependencies>
+					<dependency>
+						<groupId>com.mysema.querydsl</groupId>
+						<artifactId>querydsl-apt</artifactId>
+						<version>${querydsl}</version>
+					</dependency>
+				</dependencies>
 				<executions>
 					<execution>
 						<phase>generate-test-sources</phase>
@@ -145,7 +163,25 @@
 					</execution>
 				</executions>
 			</plugin>
+
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-surefire-plugin</artifactId>
+				<version>2.12</version>
+				<configuration>
+					<useFile>false</useFile>
+					<includes>
+						<include>**/*Tests.java</include>
+					</includes>
+					<excludes>
+						<exclude>**/PerformanceTests.java</exclude>
+					</excludes>
+					<systemPropertyVariables>
+						<java.util.logging.config.file>src/test/resources/logging.properties</java.util.logging.config.file>
+					</systemPropertyVariables>
+				</configuration>
+			</plugin>
 		</plugins>
 	</build>
-	
+
 </project>
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/CannotGetMongoDbConnectionException.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/CannotGetMongoDbConnectionException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2011 the original author or authors.
+ * Copyright 2010-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -16,42 +16,51 @@
 package org.springframework.data.mongodb;

 import org.springframework.dao.DataAccessResourceFailureException;
+import org.springframework.data.authentication.UserCredentials;

+/**
+ * Exception being thrown in case we cannot connect to a MongoDB instance.
+ * 
+ * @author Oliver Gierke
+ */
 public class CannotGetMongoDbConnectionException extends DataAccessResourceFailureException {

-	private String username;
-
-	private char[] password;
-
-	private String database;
+	private final UserCredentials credentials;
+	private final String database;

 	private static final long serialVersionUID = 1172099106475265589L;

 	public CannotGetMongoDbConnectionException(String msg, Throwable cause) {
 		super(msg, cause);
+		this.database = null;
+		this.credentials = UserCredentials.NO_CREDENTIALS;
 	}

 	public CannotGetMongoDbConnectionException(String msg) {
-		super(msg);
+		this(msg, null, UserCredentials.NO_CREDENTIALS);
 	}

-	public CannotGetMongoDbConnectionException(String msg, String database, String username, char[] password) {
+	public CannotGetMongoDbConnectionException(String msg, String database, UserCredentials credentials) {
 		super(msg);
-		this.username = username;
-		this.password = password == null ? null : password.clone();
 		this.database = database;
+		this.credentials = credentials;
 	}

-	public String getUsername() {
-		return username;
-	}
-
-	public char[] getPassword() {
-		return password;
+	/**
+	 * Returns the {@link UserCredentials} that were used when trying to connect to the MongoDB instance.
+	 * 
+	 * @return
+	 */
+	public UserCredentials getCredentials() {
+		return this.credentials;
 	}

+	/**
+	 * Returns the name of the database trying to be accessed.
+	 * 
+	 * @return
+	 */
 	public String getDatabase() {
 		return database;
 	}
-
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoDataIntegrityViolationException.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoDataIntegrityViolationException.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb;
+
+import org.springframework.dao.DataIntegrityViolationException;
+import org.springframework.data.mongodb.core.MongoActionOperation;
+import org.springframework.util.Assert;
+
+import com.mongodb.WriteResult;
+
+/**
+ * Mongo-specific {@link DataIntegrityViolationException}.
+ * 
+ * @author Oliver Gierke
+ */
+public class MongoDataIntegrityViolationException extends DataIntegrityViolationException {
+
+	private static final long serialVersionUID = -186980521176764046L;
+
+	private final WriteResult writeResult;
+	private final MongoActionOperation actionOperation;
+
+	/**
+	 * Creates a new {@link MongoDataIntegrityViolationException} using the given message and {@link WriteResult}.
+	 * 
+	 * @param message the exception message
+	 * @param writeResult the {@link WriteResult} that causes the exception, must not be {@literal null}.
+	 * @param actionOperation the {@link MongoActionOperation} that caused the exception, must not be {@literal null}.
+	 */
+	public MongoDataIntegrityViolationException(String message, WriteResult writeResult,
+			MongoActionOperation actionOperation) {
+
+		super(message);
+
+		Assert.notNull(writeResult, "WriteResult must not be null!");
+		Assert.notNull(actionOperation, "MongoActionOperation must not be null!");
+
+		this.writeResult = writeResult;
+		this.actionOperation = actionOperation;
+	}
+
+	/**
+	 * Returns the {@link WriteResult} that caused the exception.
+	 * 
+	 * @return the writeResult
+	 */
+	public WriteResult getWriteResult() {
+		return writeResult;
+	}
+
+	/**
+	 * Returns the {@link MongoActionOperation} in which the current exception occured.
+	 * 
+	 * @return the actionOperation
+	 */
+	public MongoActionOperation getActionOperation() {
+		return actionOperation;
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/AbstractMongoConfiguration.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/AbstractMongoConfiguration.java
@@ -15,6 +15,7 @@
 */
 package org.springframework.data.mongodb.config;

+import java.util.Collections;
 import java.util.HashSet;
 import java.util.Set;

@@ -22,22 +23,26 @@ import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
 import org.springframework.core.type.filter.AnnotationTypeFilter;
 import org.springframework.data.annotation.Persistent;
 import org.springframework.data.authentication.UserCredentials;
-import org.springframework.data.mongodb.MongoDbFactory;
+import org.springframework.data.mapping.context.MappingContextIsNewStrategyFactory;
 import org.springframework.data.mongodb.core.MongoTemplate;
 import org.springframework.data.mongodb.core.SimpleMongoDbFactory;
+import org.springframework.data.mongodb.core.convert.CustomConversions;
 import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
 import org.springframework.data.mongodb.core.mapping.Document;
 import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
+import org.springframework.data.support.CachingIsNewStrategyFactory;
+import org.springframework.data.support.IsNewStrategyFactory;
 import org.springframework.util.ClassUtils;
 import org.springframework.util.StringUtils;

 import com.mongodb.Mongo;

 /**
- * Abstract base class to ease JavaConfig setup for Spring Data MongoDB.
+ * Base class for Spring Data MongoDB configuration using JavaConfig.
 * 
 * @author Mark Pollack
 * @author Oliver Gierke
@@ -45,19 +50,47 @@ import com.mongodb.Mongo;
@Configuration
 public abstract class AbstractMongoConfiguration {

-	public abstract String getDatabaseName();
+	/**
+	 * Return the name of the database to connect to.
+	 * 
+	 * @return must not be {@literal null}.
+	 */
+	protected abstract String getDatabaseName();

+	/**
+	 * Return the {@link Mongo} instance to connect to.
+	 * 
+	 * @return
+	 * @throws Exception
+	 */
 	@Bean
 	public abstract Mongo mongo() throws Exception;

+	/**
+	 * Creates a {@link MongoTemplate}.
+	 * 
+	 * @return
+	 * @throws Exception
+	 */
 	@Bean
 	public MongoTemplate mongoTemplate() throws Exception {
 		return new MongoTemplate(mongoDbFactory(), mappingMongoConverter());
 	}

+	/**
+	 * Creates a {@link SimpleMongoDbFactory} to be used by the {@link MongoTemplate}. Will use the {@link Mongo} instance
+	 * configured in {@link #mongo()}.
+	 * 
+	 * @see #mongo()
+	 * @see #mongoTemplate()
+	 * @return
+	 * @throws Exception
+	 */
 	@Bean
-	public MongoDbFactory mongoDbFactory() throws Exception {
+	public SimpleMongoDbFactory mongoDbFactory() throws Exception {
+
 		UserCredentials credentials = getUserCredentials();
+
 		if (credentials == null) {
 			return new SimpleMongoDbFactory(mongo(), getDatabaseName());
 		} else {
@@ -65,46 +98,110 @@ public abstract class AbstractMongoConfiguration {
 		}
 	}

-	public String getMappingBasePackage() {
-		return "";
+	/**
+	 * Return the base package to scan for mapped {@link Document}s. Will return the package name of the configuration
+	 * class' (the concrete class, not this one here) by default. So if you have a {@code com.acme.AppConfig} extending
+	 * {@link AbstractMongoConfiguration} the base package will be considered {@code com.acme} unless the method is
+	 * overriden to implement alternate behaviour.
+	 * 
+	 * @return the base package to scan for mapped {@link Document} classes or {@literal null} to not enable scanning for
+	 *         entities.
+	 */
+	protected String getMappingBasePackage() {
+		return getClass().getPackage().getName();
 	}

-	public UserCredentials getUserCredentials() {
+	/**
+	 * Return {@link UserCredentials} to be used when connecting to the MongoDB instance or {@literal null} if none shall
+	 * be used.
+	 * 
+	 * @return
+	 */
+	protected UserCredentials getUserCredentials() {
 		return null;
 	}

+	/**
+	 * Creates a {@link MongoMappingContext} equipped with entity classes scanned from the mapping base package.
+	 * 
+	 * @see #getMappingBasePackage()
+	 * @return
+	 * @throws ClassNotFoundException
+	 */
 	@Bean
-	public MongoMappingContext mongoMappingContext() throws ClassNotFoundException, LinkageError {
+	public MongoMappingContext mongoMappingContext() throws ClassNotFoundException {
+
 		MongoMappingContext mappingContext = new MongoMappingContext();
+		mappingContext.setInitialEntitySet(getInitialEntitySet());
+		mappingContext.setSimpleTypeHolder(customConversions().getSimpleTypeHolder());
+
+		return mappingContext;
+	}
+
+	/**
+	 * Returns a {@link MappingContextIsNewStrategyFactory} wrapped into a {@link CachingIsNewStrategyFactory}.
+	 * 
+	 * @return
+	 * @throws ClassNotFoundException
+	 */
+	@Bean
+	public IsNewStrategyFactory isNewStrategyFactory() throws ClassNotFoundException {
+		return new CachingIsNewStrategyFactory(new MappingContextIsNewStrategyFactory(mongoMappingContext()));
+	}
+
+	/**
+	 * Register custom {@link Converter}s in a {@link CustomConversions} object if required. These
+	 * {@link CustomConversions} will be registered with the {@link #mappingMongoConverter()} and
+	 * {@link #mongoMappingContext()}. Returns an empty {@link CustomConversions} instance by default.
+	 * 
+	 * @return must not be {@literal null}.
+	 */
+	@Bean
+	public CustomConversions customConversions() {
+		return new CustomConversions(Collections.emptyList());
+	}
+
+	/**
+	 * Creates a {@link MappingMongoConverter} using the configured {@link #mongoDbFactory()} and
+	 * {@link #mongoMappingContext()}. Will get {@link #customConversions()} applied.
+	 * 
+	 * @see #customConversions()
+	 * @see #mongoMappingContext()
+	 * @see #mongoDbFactory()
+	 * @return
+	 * @throws Exception
+	 */
+	@Bean
+	public MappingMongoConverter mappingMongoConverter() throws Exception {
+		MappingMongoConverter converter = new MappingMongoConverter(mongoDbFactory(), mongoMappingContext());
+		converter.setCustomConversions(customConversions());
+		return converter;
+	}
+
+	/**
+	 * Scans the mapping base package for classes annotated with {@link Document}.
+	 * 
+	 * @see #getMappingBasePackage()
+	 * @return
+	 * @throws ClassNotFoundException
+	 */
+	protected Set<Class<?>> getInitialEntitySet() throws ClassNotFoundException {
+
 		String basePackage = getMappingBasePackage();
+		Set<Class<?>> initialEntitySet = new HashSet<Class<?>>();
+
 		if (StringUtils.hasText(basePackage)) {
 			ClassPathScanningCandidateComponentProvider componentProvider = new ClassPathScanningCandidateComponentProvider(
 					false);
 			componentProvider.addIncludeFilter(new AnnotationTypeFilter(Document.class));
 			componentProvider.addIncludeFilter(new AnnotationTypeFilter(Persistent.class));

-			Set<Class<?>> initialEntitySet = new HashSet<Class<?>>();
 			for (BeanDefinition candidate : componentProvider.findCandidateComponents(basePackage)) {
-				initialEntitySet.add(ClassUtils.forName(candidate.getBeanClassName(), mappingContext.getClass()
-						.getClassLoader()));
+				initialEntitySet.add(ClassUtils.forName(candidate.getBeanClassName(),
+						AbstractMongoConfiguration.class.getClassLoader()));
 			}
-			mappingContext.setInitialEntitySet(initialEntitySet);
 		}
-		return mappingContext;
-	}

-	@Bean
-	public MappingMongoConverter mappingMongoConverter() throws Exception {
-		MappingMongoConverter converter = new MappingMongoConverter(mongoDbFactory(), mongoMappingContext());
-		afterMappingMongoConverterCreation(converter);
-		return converter;
-	}
-
-	/**
-	 * Hook that allows post-processing after the MappingMongoConverter has been successfully created.
-	 * 
-	 * @param converter
-	 */
-	protected void afterMappingMongoConverterCreation(MappingMongoConverter converter) {
+		return initialEntitySet;
 	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/BeanNames.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/BeanNames.java
@@ -25,4 +25,7 @@ public abstract class BeanNames {
 	static final String INDEX_HELPER = "indexCreationHelper";
 	static final String MONGO = "mongo";
 	static final String DB_FACTORY = "mongoDbFactory";
+	static final String VALIDATING_EVENT_LISTENER = "validatingMongoEventListener";
+	static final String IS_NEW_STRATEGY_FACTORY = "isNewStrategyFactory";
+	static final String DEFAULT_CONVERTER_BEAN_NAME = "mappingConverter";
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MappingMongoConverterParser.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MappingMongoConverterParser.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -13,7 +13,6 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.config;

 import static org.springframework.data.mongodb.config.BeanNames.*;
@@ -25,18 +24,21 @@ import java.util.List;
 import java.util.Set;

 import org.springframework.beans.BeanMetadataElement;
-import org.springframework.beans.factory.BeanDefinitionStoreException;
 import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.config.BeanDefinitionHolder;
 import org.springframework.beans.factory.config.RuntimeBeanReference;
+import org.springframework.beans.factory.parsing.BeanComponentDefinition;
+import org.springframework.beans.factory.parsing.CompositeComponentDefinition;
 import org.springframework.beans.factory.support.AbstractBeanDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
 import org.springframework.beans.factory.support.BeanDefinitionRegistry;
 import org.springframework.beans.factory.support.GenericBeanDefinition;
 import org.springframework.beans.factory.support.ManagedList;
 import org.springframework.beans.factory.support.ManagedSet;
+import org.springframework.beans.factory.support.RootBeanDefinition;
 import org.springframework.beans.factory.xml.AbstractBeanDefinitionParser;
+import org.springframework.beans.factory.xml.BeanDefinitionParser;
 import org.springframework.beans.factory.xml.ParserContext;
 import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
 import org.springframework.core.convert.converter.Converter;
@@ -47,37 +49,49 @@ import org.springframework.core.type.filter.AnnotationTypeFilter;
 import org.springframework.core.type.filter.AssignableTypeFilter;
 import org.springframework.core.type.filter.TypeFilter;
 import org.springframework.data.annotation.Persistent;
+import org.springframework.data.config.BeanComponentDefinitionBuilder;
+import org.springframework.data.mapping.context.MappingContextIsNewStrategyFactory;
 import org.springframework.data.mongodb.core.convert.CustomConversions;
 import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
 import org.springframework.data.mongodb.core.index.MongoPersistentEntityIndexCreator;
 import org.springframework.data.mongodb.core.mapping.Document;
 import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
+import org.springframework.data.mongodb.core.mapping.event.ValidatingMongoEventListener;
 import org.springframework.util.Assert;
+import org.springframework.util.ClassUtils;
 import org.springframework.util.StringUtils;
 import org.springframework.util.xml.DomUtils;
 import org.w3c.dom.Element;

 /**
- * @author Jon Brisbin <jbrisbin@vmware.com>
+ * Bean definition parser for the {@code mapping-converter} element.
+ * 
+ * @author Jon Brisbin
 * @author Oliver Gierke
+ * @author Maciej Walkowiak
 */
-public class MappingMongoConverterParser extends AbstractBeanDefinitionParser {
+public class MappingMongoConverterParser implements BeanDefinitionParser {

 	private static final String BASE_PACKAGE = "base-package";
+	private static final boolean jsr303Present = ClassUtils.isPresent("javax.validation.Validator",
+			MappingMongoConverterParser.class.getClassLoader());

-	@Override
-	protected String resolveId(Element element, AbstractBeanDefinition definition, ParserContext parserContext)
-			throws BeanDefinitionStoreException {
-		String id = super.resolveId(element, definition, parserContext);
-		return StringUtils.hasText(id) ? id : "mappingConverter";
-	}
+	/* (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.BeanDefinitionParser#parse(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext)
+	 */
+	public BeanDefinition parse(Element element, ParserContext parserContext) {

-	@Override
-	protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) {
 		BeanDefinitionRegistry registry = parserContext.getRegistry();

+		String id = element.getAttribute(AbstractBeanDefinitionParser.ID_ATTRIBUTE);
+		id = StringUtils.hasText(id) ? id : "mappingConverter";
+
+		parserContext.pushContainingComponent(new CompositeComponentDefinition("Mapping Mongo Converter", element));
+
 		BeanDefinition conversionsDefinition = getCustomConversions(element, parserContext);
-		String ctxRef = potentiallyCreateMappingContext(element, parserContext, conversionsDefinition);
+		String ctxRef = potentiallyCreateMappingContext(element, parserContext, conversionsDefinition, id);
+
+		createIsNewStrategyFactoryBeanDefinition(ctxRef, parserContext, element);

 		// Need a reference to a Mongo instance
 		String dbFactoryRef = element.getAttribute("db-factory-ref");
@@ -102,39 +116,94 @@ public class MappingMongoConverterParser extends AbstractBeanDefinitionParser {
 			}
 			BeanDefinitionBuilder indexHelperBuilder = BeanDefinitionBuilder
 					.genericBeanDefinition(MongoPersistentEntityIndexCreator.class);
-			indexHelperBuilder.addConstructorArgValue(new RuntimeBeanReference(ctxRef));
-			indexHelperBuilder.addConstructorArgValue(new RuntimeBeanReference(dbFactoryRef));
-			registry.registerBeanDefinition(INDEX_HELPER, indexHelperBuilder.getBeanDefinition());
+			indexHelperBuilder.addConstructorArgReference(ctxRef);
+			indexHelperBuilder.addConstructorArgReference(dbFactoryRef);
+			indexHelperBuilder.addDependsOn(ctxRef);
+
+			parserContext.registerBeanComponent(new BeanComponentDefinition(indexHelperBuilder.getBeanDefinition(),
+					INDEX_HELPER));
 		}

-		return converterBuilder.getBeanDefinition();
+		BeanDefinition validatingMongoEventListener = potentiallyCreateValidatingMongoEventListener(element, parserContext);
+
+		if (validatingMongoEventListener != null) {
+			parserContext.registerBeanComponent(new BeanComponentDefinition(validatingMongoEventListener,
+					VALIDATING_EVENT_LISTENER));
+		}
+
+		parserContext.registerBeanComponent(new BeanComponentDefinition(converterBuilder.getBeanDefinition(), id));
+		parserContext.popAndRegisterContainingComponent();
+		return null;
 	}

-	private String potentiallyCreateMappingContext(Element element, ParserContext parserContext,
-			BeanDefinition conversionsDefinition) {
+	private BeanDefinition potentiallyCreateValidatingMongoEventListener(Element element, ParserContext parserContext) {

-		String ctxRef = element.getAttribute("mapping-context-ref");
-		if (!StringUtils.hasText(ctxRef)) {
-			BeanDefinitionBuilder mappingContextBuilder = BeanDefinitionBuilder
-					.genericBeanDefinition(MongoMappingContext.class);
+		String disableValidation = element.getAttribute("disable-validation");
+		boolean validationDisabled = StringUtils.hasText(disableValidation) && Boolean.valueOf(disableValidation);

-			Set<String> classesToAdd = getInititalEntityClasses(element, mappingContextBuilder);
-			if (classesToAdd != null) {
-				mappingContextBuilder.addPropertyValue("initialEntitySet", classesToAdd);
+		if (!validationDisabled) {
+
+			BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition();
+			RuntimeBeanReference validator = getValidator(builder, parserContext);
+
+			if (validator != null) {
+				builder.getRawBeanDefinition().setBeanClass(ValidatingMongoEventListener.class);
+				builder.addConstructorArgValue(validator);
+
+				return builder.getBeanDefinition();
 			}
-
-			if (conversionsDefinition != null) {
-				AbstractBeanDefinition simpleTypesDefinition = new GenericBeanDefinition();
-				simpleTypesDefinition.setFactoryBeanName("customConversions");
-				simpleTypesDefinition.setFactoryMethodName("getSimpleTypeHolder");
-
-				mappingContextBuilder.addPropertyValue("simpleTypeHolder", simpleTypesDefinition);
-			}
-
-			parserContext.getRegistry().registerBeanDefinition(MAPPING_CONTEXT, mappingContextBuilder.getBeanDefinition());
-			ctxRef = MAPPING_CONTEXT;
 		}

+		return null;
+	}
+
+	private RuntimeBeanReference getValidator(Object source, ParserContext parserContext) {
+
+		if (!jsr303Present) {
+			return null;
+		}
+
+		RootBeanDefinition validatorDef = new RootBeanDefinition(
+				"org.springframework.validation.beanvalidation.LocalValidatorFactoryBean");
+		validatorDef.setSource(source);
+		validatorDef.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
+		String validatorName = parserContext.getReaderContext().registerWithGeneratedName(validatorDef);
+		parserContext.registerBeanComponent(new BeanComponentDefinition(validatorDef, validatorName));
+
+		return new RuntimeBeanReference(validatorName);
+	}
+
+	static String potentiallyCreateMappingContext(Element element, ParserContext parserContext,
+			BeanDefinition conversionsDefinition, String converterId) {
+
+		String ctxRef = element.getAttribute("mapping-context-ref");
+
+		if (StringUtils.hasText(ctxRef)) {
+			return ctxRef;
+		}
+
+		BeanComponentDefinitionBuilder componentDefinitionBuilder = new BeanComponentDefinitionBuilder(element,
+				parserContext);
+
+		BeanDefinitionBuilder mappingContextBuilder = BeanDefinitionBuilder
+				.genericBeanDefinition(MongoMappingContext.class);
+
+		Set<String> classesToAdd = getInititalEntityClasses(element, mappingContextBuilder);
+		if (classesToAdd != null) {
+			mappingContextBuilder.addPropertyValue("initialEntitySet", classesToAdd);
+		}
+
+		if (conversionsDefinition != null) {
+			AbstractBeanDefinition simpleTypesDefinition = new GenericBeanDefinition();
+			simpleTypesDefinition.setFactoryBeanName("customConversions");
+			simpleTypesDefinition.setFactoryMethodName("getSimpleTypeHolder");
+
+			mappingContextBuilder.addPropertyValue("simpleTypeHolder", simpleTypesDefinition);
+		}
+
+		ctxRef = converterId + "." + MAPPING_CONTEXT;
+
+		parserContext.registerBeanComponent(componentDefinitionBuilder.getComponent(mappingContextBuilder, ctxRef));
 		return ctxRef;
 	}

@@ -172,7 +241,7 @@ public class MappingMongoConverterParser extends AbstractBeanDefinitionParser {
 			AbstractBeanDefinition conversionsBean = conversionsBuilder.getBeanDefinition();
 			conversionsBean.setSource(parserContext.extractSource(element));

-			parserContext.getRegistry().registerBeanDefinition("customConversions", conversionsBean);
+			parserContext.registerBeanComponent(new BeanComponentDefinition(conversionsBean, "customConversions"));

 			return conversionsBean;
 		}
@@ -180,7 +249,7 @@ public class MappingMongoConverterParser extends AbstractBeanDefinitionParser {
 		return null;
 	}

-	public Set<String> getInititalEntityClasses(Element element, BeanDefinitionBuilder builder) {
+	private static Set<String> getInititalEntityClasses(Element element, BeanDefinitionBuilder builder) {

 		String basePackage = element.getAttribute(BASE_PACKAGE);

@@ -219,6 +288,19 @@ public class MappingMongoConverterParser extends AbstractBeanDefinitionParser {
 		return null;
 	}

+	public static String createIsNewStrategyFactoryBeanDefinition(String mappingContextRef, ParserContext context,
+			Element element) {
+
+		BeanDefinitionBuilder mappingContextStrategyFactoryBuilder = BeanDefinitionBuilder
+				.rootBeanDefinition(MappingContextIsNewStrategyFactory.class);
+		mappingContextStrategyFactoryBuilder.addConstructorArgReference(mappingContextRef);
+
+		BeanComponentDefinitionBuilder builder = new BeanComponentDefinitionBuilder(element, context);
+		context.registerBeanComponent(builder.getComponent(mappingContextStrategyFactoryBuilder, IS_NEW_STRATEGY_FACTORY));
+
+		return IS_NEW_STRATEGY_FACTORY;
+	}
+
 	/**
 	 * {@link TypeFilter} that returns {@literal false} in case any of the given delegates matches.
 	 * 
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoAuditingBeanDefinitionParser.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoAuditingBeanDefinitionParser.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.config;
+
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.beans.factory.support.BeanDefinitionBuilder;
+import org.springframework.beans.factory.support.BeanDefinitionRegistry;
+import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
+import org.springframework.beans.factory.xml.BeanDefinitionParser;
+import org.springframework.beans.factory.xml.ParserContext;
+import org.springframework.data.config.IsNewAwareAuditingHandlerBeanDefinitionParser;
+import org.springframework.data.mongodb.core.mapping.event.AuditingEventListener;
+import org.w3c.dom.Element;
+
+/**
+ * {@link BeanDefinitionParser} to register a {@link AuditingEventListener} to transparently set auditing information on
+ * an entity.
+ * 
+ * @author Oliver Gierke
+ */
+public class MongoAuditingBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser#getBeanClass(org.w3c.dom.Element)
+	 */
+	@Override
+	protected Class<?> getBeanClass(Element element) {
+		return AuditingEventListener.class;
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractBeanDefinitionParser#shouldGenerateId()
+	 */
+	@Override
+	protected boolean shouldGenerateId() {
+		return true;
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser#doParse(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext, org.springframework.beans.factory.support.BeanDefinitionBuilder)
+	 */
+	@Override
+	protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
+
+		BeanDefinitionRegistry registry = parserContext.getRegistry();
+
+		if (!registry.containsBeanDefinition(BeanNames.IS_NEW_STRATEGY_FACTORY)) {
+
+			String mappingContextName = BeanNames.MAPPING_CONTEXT;
+
+			if (!registry.containsBeanDefinition(BeanNames.MAPPING_CONTEXT)) {
+				mappingContextName = MappingMongoConverterParser.potentiallyCreateMappingContext(element, parserContext, null,
+						BeanNames.DEFAULT_CONVERTER_BEAN_NAME);
+			}
+
+			MappingMongoConverterParser.createIsNewStrategyFactoryBeanDefinition(mappingContextName, parserContext, element);
+		}
+
+		BeanDefinitionParser parser = new IsNewAwareAuditingHandlerBeanDefinitionParser(BeanNames.IS_NEW_STRATEGY_FACTORY);
+		BeanDefinition handlerBeanDefinition = parser.parse(element, parserContext);
+
+		builder.addConstructorArgValue(handlerBeanDefinition);
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoDbFactoryParser.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoDbFactoryParser.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 by the original author(s).
+ * Copyright 2011-2012 by the original author(s).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -15,19 +15,19 @@
 */
 package org.springframework.data.mongodb.config;

-import static org.springframework.data.mongodb.config.BeanNames.*;
-import static org.springframework.data.mongodb.config.ParsingUtils.*;
+import static org.springframework.data.config.ParsingUtils.*;
+import static org.springframework.data.mongodb.config.MongoParsingUtils.*;

 import org.springframework.beans.factory.BeanDefinitionStoreException;
 import org.springframework.beans.factory.config.BeanDefinition;
-import org.springframework.beans.factory.config.RuntimeBeanReference;
+import org.springframework.beans.factory.parsing.BeanComponentDefinition;
 import org.springframework.beans.factory.support.AbstractBeanDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
-import org.springframework.beans.factory.support.BeanDefinitionReaderUtils;
 import org.springframework.beans.factory.xml.AbstractBeanDefinitionParser;
 import org.springframework.beans.factory.xml.BeanDefinitionParser;
 import org.springframework.beans.factory.xml.ParserContext;
 import org.springframework.data.authentication.UserCredentials;
+import org.springframework.data.config.BeanComponentDefinitionBuilder;
 import org.springframework.data.mongodb.core.MongoFactoryBean;
 import org.springframework.data.mongodb.core.SimpleMongoDbFactory;
 import org.springframework.util.StringUtils;
@@ -44,19 +44,29 @@ import com.mongodb.MongoURI;
 */
 public class MongoDbFactoryParser extends AbstractBeanDefinitionParser {

+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractBeanDefinitionParser#resolveId(org.w3c.dom.Element, org.springframework.beans.factory.support.AbstractBeanDefinition, org.springframework.beans.factory.xml.ParserContext)
+	 */
 	@Override
 	protected String resolveId(Element element, AbstractBeanDefinition definition, ParserContext parserContext)
 			throws BeanDefinitionStoreException {
-		String id = element.getAttribute("id");
-		if (!StringUtils.hasText(id)) {
-			id = DB_FACTORY;
-		}
-		return id;
+
+		String id = super.resolveId(element, definition, parserContext);
+		return StringUtils.hasText(id) ? id : BeanNames.DB_FACTORY;
 	}

+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractBeanDefinitionParser#parseInternal(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext)
+	 */
 	@Override
 	protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) {

+		Object source = parserContext.extractSource(element);
+
+		BeanComponentDefinitionBuilder helper = new BeanComponentDefinitionBuilder(element, parserContext);
+
 		String uri = element.getAttribute("uri");
 		String mongoRef = element.getAttribute("mongo-ref");
 		String dbname = element.getAttribute("dbname");
@@ -64,12 +74,11 @@ public class MongoDbFactoryParser extends AbstractBeanDefinitionParser {

 		// Common setup
 		BeanDefinitionBuilder dbFactoryBuilder = BeanDefinitionBuilder.genericBeanDefinition(SimpleMongoDbFactory.class);
-		ParsingUtils.setPropertyValue(element, dbFactoryBuilder, "write-concern", "writeConcern");
+		setPropertyValue(dbFactoryBuilder, element, "write-concern", "writeConcern");

 		if (StringUtils.hasText(uri)) {
 			if (StringUtils.hasText(mongoRef) || StringUtils.hasText(dbname) || userCredentials != null) {
-				parserContext.getReaderContext().error("Configure either Mongo URI or details individually!",
-						parserContext.extractSource(element));
+				parserContext.getReaderContext().error("Configure either Mongo URI or details individually!", source);
 			}

 			dbFactoryBuilder.addConstructorArgValue(getMongoUri(uri));
@@ -77,19 +86,26 @@ public class MongoDbFactoryParser extends AbstractBeanDefinitionParser {
 		}

 		// Defaulting
-		mongoRef = StringUtils.hasText(mongoRef) ? mongoRef : registerMongoBeanDefinition(element, parserContext);
-		dbname = StringUtils.hasText(dbname) ? dbname : "db";
+		if (StringUtils.hasText(mongoRef)) {
+			dbFactoryBuilder.addConstructorArgReference(mongoRef);
+		} else {
+			dbFactoryBuilder.addConstructorArgValue(registerMongoBeanDefinition(element, parserContext));
+		}

-		dbFactoryBuilder.addConstructorArgValue(new RuntimeBeanReference(mongoRef));
+		dbname = StringUtils.hasText(dbname) ? dbname : "db";
 		dbFactoryBuilder.addConstructorArgValue(dbname);

 		if (userCredentials != null) {
 			dbFactoryBuilder.addConstructorArgValue(userCredentials);
 		}

-		ParsingUtils.registerWriteConcernPropertyEditor(parserContext.getRegistry());
+		BeanDefinitionBuilder writeConcernPropertyEditorBuilder = getWriteConcernPropertyEditorBuilder();

-		return getSourceBeanDefinition(dbFactoryBuilder, parserContext, element);
+		BeanComponentDefinition component = helper.getComponent(writeConcernPropertyEditorBuilder);
+		parserContext.registerBeanComponent(component);
+
+		return (AbstractBeanDefinition) helper.getComponentIdButFallback(dbFactoryBuilder, BeanNames.DB_FACTORY)
+				.getBeanDefinition();
 	}

 	/**
@@ -100,14 +116,13 @@ public class MongoDbFactoryParser extends AbstractBeanDefinitionParser {
 	 * @param parserContext must not be {@literal null}.
 	 * @return
 	 */
-	private String registerMongoBeanDefinition(Element element, ParserContext parserContext) {
+	private BeanDefinition registerMongoBeanDefinition(Element element, ParserContext parserContext) {

 		BeanDefinitionBuilder mongoBuilder = BeanDefinitionBuilder.genericBeanDefinition(MongoFactoryBean.class);
-		ParsingUtils.setPropertyValue(element, mongoBuilder, "host");
-		ParsingUtils.setPropertyValue(element, mongoBuilder, "port");
+		setPropertyValue(mongoBuilder, element, "host");
+		setPropertyValue(mongoBuilder, element, "port");

-		return BeanDefinitionReaderUtils.registerWithGeneratedName(mongoBuilder.getBeanDefinition(),
-				parserContext.getRegistry());
+		return getSourceBeanDefinition(mongoBuilder, parserContext, element);
 	}

 	/**
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoNamespaceHandler.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoNamespaceHandler.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 the original author or authors.
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -16,26 +16,31 @@
 package org.springframework.data.mongodb.config;

 import org.springframework.beans.factory.xml.NamespaceHandlerSupport;
-import org.springframework.data.mongodb.repository.config.MongoRepositoryConfigParser;
+import org.springframework.data.mongodb.repository.config.MongoRepositoryConfigurationExtension;
+import org.springframework.data.repository.config.RepositoryBeanDefinitionParser;
+import org.springframework.data.repository.config.RepositoryConfigurationExtension;

 /**
- * {@link org.springframework.beans.factory.xml.NamespaceHandler} for Mongo DB based repositories.
+ * {@link org.springframework.beans.factory.xml.NamespaceHandler} for Mongo DB configuration.
 * 
 * @author Oliver Gierke
 */
 public class MongoNamespaceHandler extends NamespaceHandlerSupport {

 	/*
-	* (non-Javadoc)
-	*
-	* @see org.springframework.beans.factory.xml.NamespaceHandler#init()
-	*/
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.NamespaceHandler#init()
+	 */
 	public void init() {

-		registerBeanDefinitionParser("repositories", new MongoRepositoryConfigParser());
+		RepositoryConfigurationExtension extension = new MongoRepositoryConfigurationExtension();
+		RepositoryBeanDefinitionParser repositoryBeanDefinitionParser = new RepositoryBeanDefinitionParser(extension);
+
+		registerBeanDefinitionParser("repositories", repositoryBeanDefinitionParser);
 		registerBeanDefinitionParser("mapping-converter", new MappingMongoConverterParser());
 		registerBeanDefinitionParser("mongo", new MongoParser());
 		registerBeanDefinitionParser("db-factory", new MongoDbFactoryParser());
 		registerBeanDefinitionParser("jmx", new MongoJmxParser());
+		registerBeanDefinitionParser("auditing", new MongoAuditingBeanDefinitionParser());
 	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoParser.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoParser.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 the original author or authors.
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -13,20 +13,20 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.config;

 import java.util.Map;

-import org.springframework.beans.factory.BeanDefinitionStoreException;
+import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.config.CustomEditorConfigurer;
-import org.springframework.beans.factory.support.AbstractBeanDefinition;
+import org.springframework.beans.factory.parsing.BeanComponentDefinition;
+import org.springframework.beans.factory.parsing.CompositeComponentDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
-import org.springframework.beans.factory.support.BeanDefinitionReaderUtils;
-import org.springframework.beans.factory.support.BeanDefinitionRegistry;
 import org.springframework.beans.factory.support.ManagedMap;
-import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
+import org.springframework.beans.factory.xml.BeanDefinitionParser;
 import org.springframework.beans.factory.xml.ParserContext;
+import org.springframework.data.config.BeanComponentDefinitionBuilder;
+import org.springframework.data.config.ParsingUtils;
 import org.springframework.data.mongodb.core.MongoFactoryBean;
 import org.springframework.util.StringUtils;
 import org.w3c.dom.Element;
@@ -35,54 +35,59 @@ import org.w3c.dom.Element;
 * Parser for &lt;mongo;gt; definitions.
 * 
 * @author Mark Pollack
+ * @author Oliver Gierke
 */
-public class MongoParser extends AbstractSingleBeanDefinitionParser {
+public class MongoParser implements BeanDefinitionParser {

-	@Override
-	protected Class<?> getBeanClass(Element element) {
-		return MongoFactoryBean.class;
-	}
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.BeanDefinitionParser#parse(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext)
+	 */
+	public BeanDefinition parse(Element element, ParserContext parserContext) {

-	@Override
-	protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
+		Object source = parserContext.extractSource(element);
+		String id = element.getAttribute("id");

-		ParsingUtils.setPropertyValue(element, builder, "port", "port");
-		ParsingUtils.setPropertyValue(element, builder, "host", "host");
-		ParsingUtils.setPropertyValue(element, builder, "write-concern", "writeConcern");
+		BeanComponentDefinitionBuilder helper = new BeanComponentDefinitionBuilder(element, parserContext);

-		ParsingUtils.parseMongoOptions(element, builder);
-		ParsingUtils.parseReplicaSet(element, builder);
+		BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition(MongoFactoryBean.class);
+		ParsingUtils.setPropertyValue(builder, element, "port", "port");
+		ParsingUtils.setPropertyValue(builder, element, "host", "host");
+		ParsingUtils.setPropertyValue(builder, element, "write-concern", "writeConcern");

-		registerServerAddressPropertyEditor(parserContext.getRegistry());
-		ParsingUtils.registerWriteConcernPropertyEditor(parserContext.getRegistry());
+		MongoParsingUtils.parseMongoOptions(element, builder);
+		MongoParsingUtils.parseReplicaSet(element, builder);

+		String defaultedId = StringUtils.hasText(id) ? id : BeanNames.MONGO;
+
+		parserContext.pushContainingComponent(new CompositeComponentDefinition("Mongo", source));
+
+		BeanComponentDefinition mongoComponent = helper.getComponent(builder, defaultedId);
+		parserContext.registerBeanComponent(mongoComponent);
+		BeanComponentDefinition serverAddressPropertyEditor = helper.getComponent(registerServerAddressPropertyEditor());
+		parserContext.registerBeanComponent(serverAddressPropertyEditor);
+		BeanComponentDefinition writeConcernPropertyEditor = helper.getComponent(MongoParsingUtils
+				.getWriteConcernPropertyEditorBuilder());
+		parserContext.registerBeanComponent(writeConcernPropertyEditor);
+
+		parserContext.popAndRegisterContainingComponent();
+
+		return mongoComponent.getBeanDefinition();
 	}

 	/**
 	 * One should only register one bean definition but want to have the convenience of using
 	 * AbstractSingleBeanDefinitionParser but have the side effect of registering a 'default' property editor with the
 	 * container.
-	 * 
-	 * @param parserContext the ParserContext to
 	 */
-	private void registerServerAddressPropertyEditor(BeanDefinitionRegistry registry) {
+	private BeanDefinitionBuilder registerServerAddressPropertyEditor() {

-		BeanDefinitionBuilder customEditorConfigurer = BeanDefinitionBuilder
-				.genericBeanDefinition(CustomEditorConfigurer.class);
 		Map<String, String> customEditors = new ManagedMap<String, String>();
 		customEditors.put("com.mongodb.ServerAddress[]",
 				"org.springframework.data.mongodb.config.ServerAddressPropertyEditor");
-		customEditorConfigurer.addPropertyValue("customEditors", customEditors);
-		BeanDefinitionReaderUtils.registerWithGeneratedName(customEditorConfigurer.getBeanDefinition(), registry);
-	}

-	@Override
-	protected String resolveId(Element element, AbstractBeanDefinition definition, ParserContext parserContext)
-			throws BeanDefinitionStoreException {
-		String name = super.resolveId(element, definition, parserContext);
-		if (!StringUtils.hasText(name)) {
-			name = "mongo";
-		}
-		return name;
+		BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition(CustomEditorConfigurer.class);
+		builder.addPropertyValue("customEditors", customEditors);
+		return builder;
 	}
-}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoParsingUtils.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoParsingUtils.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2011-2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.config;
+
+import static org.springframework.data.config.ParsingUtils.*;
+
+import java.util.Map;
+
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.beans.factory.config.CustomEditorConfigurer;
+import org.springframework.beans.factory.support.BeanDefinitionBuilder;
+import org.springframework.beans.factory.support.ManagedMap;
+import org.springframework.beans.factory.xml.BeanDefinitionParser;
+import org.springframework.data.mongodb.core.MongoOptionsFactoryBean;
+import org.springframework.util.xml.DomUtils;
+import org.w3c.dom.Element;
+
+/**
+ * Utility methods for {@link BeanDefinitionParser} implementations for MongoDB.
+ * 
+ * @author Mark Pollack
+ * @author Oliver Gierke
+ */
+abstract class MongoParsingUtils {
+
+	private MongoParsingUtils() {
+
+	}
+
+	/**
+	 * Parses the mongo replica-set element.
+	 * 
+	 * @param parserContext the parser context
+	 * @param element the mongo element
+	 * @param mongoBuilder the bean definition builder to populate
+	 * @return
+	 */
+	static void parseReplicaSet(Element element, BeanDefinitionBuilder mongoBuilder) {
+		setPropertyValue(mongoBuilder, element, "replica-set", "replicaSetSeeds");
+	}
+
+	/**
+	 * Parses the mongo:options sub-element. Populates the given attribute factory with the proper attributes.
+	 * 
+	 * @return true if parsing actually occured, false otherwise
+	 */
+	static boolean parseMongoOptions(Element element, BeanDefinitionBuilder mongoBuilder) {
+		Element optionsElement = DomUtils.getChildElementByTagName(element, "options");
+		if (optionsElement == null) {
+			return false;
+		}
+
+		BeanDefinitionBuilder optionsDefBuilder = BeanDefinitionBuilder
+				.genericBeanDefinition(MongoOptionsFactoryBean.class);
+
+		setPropertyValue(optionsDefBuilder, optionsElement, "connections-per-host", "connectionsPerHost");
+		setPropertyValue(optionsDefBuilder, optionsElement, "threads-allowed-to-block-for-connection-multiplier",
+				"threadsAllowedToBlockForConnectionMultiplier");
+		setPropertyValue(optionsDefBuilder, optionsElement, "max-wait-time", "maxWaitTime");
+		setPropertyValue(optionsDefBuilder, optionsElement, "connect-timeout", "connectTimeout");
+		setPropertyValue(optionsDefBuilder, optionsElement, "socket-timeout", "socketTimeout");
+		setPropertyValue(optionsDefBuilder, optionsElement, "socket-keep-alive", "socketKeepAlive");
+		setPropertyValue(optionsDefBuilder, optionsElement, "auto-connect-retry", "autoConnectRetry");
+		setPropertyValue(optionsDefBuilder, optionsElement, "max-auto-connect-retry-time", "maxAutoConnectRetryTime");
+		setPropertyValue(optionsDefBuilder, optionsElement, "write-number", "writeNumber");
+		setPropertyValue(optionsDefBuilder, optionsElement, "write-timeout", "writeTimeout");
+		setPropertyValue(optionsDefBuilder, optionsElement, "write-fsync", "writeFsync");
+		setPropertyValue(optionsDefBuilder, optionsElement, "slave-ok", "slaveOk");
+
+		mongoBuilder.addPropertyValue("mongoOptions", optionsDefBuilder.getBeanDefinition());
+		return true;
+	}
+
+	/**
+	 * Returns the {@link BeanDefinitionBuilder} to build a {@link BeanDefinition} for a
+	 * {@link WriteConcernPropertyEditor}.
+	 * 
+	 * @return
+	 */
+	static BeanDefinitionBuilder getWriteConcernPropertyEditorBuilder() {
+
+		Map<String, Class<?>> customEditors = new ManagedMap<String, Class<?>>();
+		customEditors.put("com.mongodb.WriteConcern", WriteConcernPropertyEditor.class);
+
+		BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition(CustomEditorConfigurer.class);
+		builder.addPropertyValue("customEditors", customEditors);
+
+		return builder;
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ParsingUtils.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ParsingUtils.java
@@ -1,141 +0,0 @@
-/*
- * Copyright (c) 2011 by the original author(s).
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.springframework.data.mongodb.config;
-
-import java.util.Map;
-
-import org.springframework.beans.factory.config.BeanDefinition;
-import org.springframework.beans.factory.config.CustomEditorConfigurer;
-import org.springframework.beans.factory.support.AbstractBeanDefinition;
-import org.springframework.beans.factory.support.BeanDefinitionBuilder;
-import org.springframework.beans.factory.support.BeanDefinitionReaderUtils;
-import org.springframework.beans.factory.support.BeanDefinitionRegistry;
-import org.springframework.beans.factory.support.ManagedMap;
-import org.springframework.beans.factory.xml.ParserContext;
-import org.springframework.data.mongodb.core.MongoOptionsFactoryBean;
-import org.springframework.util.Assert;
-import org.springframework.util.StringUtils;
-import org.springframework.util.xml.DomUtils;
-import org.w3c.dom.Element;
-
-abstract class ParsingUtils {
-
-	/**
-	 * Parses the mongo replica-set element.
-	 * 
-	 * @param parserContext the parser context
-	 * @param element the mongo element
-	 * @param mongoBuilder the bean definition builder to populate
-	 * @return true if parsing actually occured, false otherwise
-	 */
-	static boolean parseReplicaSet(Element element, BeanDefinitionBuilder mongoBuilder) {
-
-		String replicaSetString = element.getAttribute("replica-set");
-		if (StringUtils.hasText(replicaSetString)) {
-			mongoBuilder.addPropertyValue("replicaSetSeeds", replicaSetString);
-		}
-		return true;
-
-	}
-
-	/**
-	 * Parses the mongo:options sub-element. Populates the given attribute factory with the proper attributes.
-	 * 
-	 * @return true if parsing actually occured, false otherwise
-	 */
-	static boolean parseMongoOptions(Element element, BeanDefinitionBuilder mongoBuilder) {
-		Element optionsElement = DomUtils.getChildElementByTagName(element, "options");
-		if (optionsElement == null) {
-			return false;
-		}
-
-		BeanDefinitionBuilder optionsDefBuilder = BeanDefinitionBuilder
-				.genericBeanDefinition(MongoOptionsFactoryBean.class);
-
-		setPropertyValue(optionsElement, optionsDefBuilder, "connections-per-host", "connectionsPerHost");
-		setPropertyValue(optionsElement, optionsDefBuilder, "threads-allowed-to-block-for-connection-multiplier",
-				"threadsAllowedToBlockForConnectionMultiplier");
-		setPropertyValue(optionsElement, optionsDefBuilder, "max-wait-time", "maxWaitTime");
-		setPropertyValue(optionsElement, optionsDefBuilder, "connect-timeout", "connectTimeout");
-		setPropertyValue(optionsElement, optionsDefBuilder, "socket-timeout", "socketTimeout");
-		setPropertyValue(optionsElement, optionsDefBuilder, "socket-keep-alive", "socketKeepAlive");
-		setPropertyValue(optionsElement, optionsDefBuilder, "auto-connect-retry", "autoConnectRetry");
-		setPropertyValue(optionsElement, optionsDefBuilder, "max-auto-connect-retry-time", "maxAutoConnectRetryTime");
-		setPropertyValue(optionsElement, optionsDefBuilder, "write-number", "writeNumber");
-		setPropertyValue(optionsElement, optionsDefBuilder, "write-timeout", "writeTimeout");
-		setPropertyValue(optionsElement, optionsDefBuilder, "write-fsync", "writeFsync");
-		setPropertyValue(optionsElement, optionsDefBuilder, "slave-ok", "slaveOk");
-
-		mongoBuilder.addPropertyValue("mongoOptions", optionsDefBuilder.getBeanDefinition());
-		return true;
-	}
-
-	static void setPropertyValue(Element element, BeanDefinitionBuilder builder, String attrName, String propertyName) {
-		String attr = element.getAttribute(attrName);
-		if (StringUtils.hasText(attr)) {
-			builder.addPropertyValue(propertyName, attr);
-		}
-	}
-
-	/**
-	 * Sets the property with the given attribute name on the given {@link BeanDefinitionBuilder} to the value of the
-	 * attribute with the given name.
-	 * 
-	 * @param element must not be {@literal null}.
-	 * @param builder must not be {@literal null}.
-	 * @param attrName must not be {@literal null} or empty.
-	 */
-	static void setPropertyValue(Element element, BeanDefinitionBuilder builder, String attrName) {
-		String attr = element.getAttribute(attrName);
-		if (StringUtils.hasText(attr)) {
-			builder.addPropertyValue(attrName, attr);
-		}
-	}
-
-	/**
-	 * Returns the {@link BeanDefinition} built by the given {@link BeanDefinitionBuilder} enriched with source
-	 * information derived from the given {@link Element}.
-	 * 
-	 * @param builder must not be {@literal null}.
-	 * @param context must not be {@literal null}.
-	 * @param element must not be {@literal null}.
-	 * @return
-	 */
-	static AbstractBeanDefinition getSourceBeanDefinition(BeanDefinitionBuilder builder, ParserContext context,
-			Element element) {
-		AbstractBeanDefinition definition = builder.getBeanDefinition();
-		definition.setSource(context.extractSource(element));
-		return definition;
-	}
-
-	/**
-	 * Registers a {@link WriteConcernPropertyEditor} in the given {@link BeanDefinitionRegistry}.
-	 * 
-	 * @param registry must not be {@literal null}.
-	 */
-	static void registerWriteConcernPropertyEditor(BeanDefinitionRegistry registry) {
-
-		Assert.notNull(registry);
-
-		BeanDefinitionBuilder customEditorConfigurer = BeanDefinitionBuilder
-				.genericBeanDefinition(CustomEditorConfigurer.class);
-		Map<String, Class<?>> customEditors = new ManagedMap<String, Class<?>>();
-		customEditors.put("com.mongodb.WriteConcern", WriteConcernPropertyEditor.class);
-		customEditorConfigurer.addPropertyValue("customEditors", customEditors);
-		BeanDefinitionReaderUtils.registerWithGeneratedName(customEditorConfigurer.getBeanDefinition(), registry);
-	}
-}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ServerAddressPropertyEditor.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ServerAddressPropertyEditor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 the original author or authors.
+ * Copyright 2011-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -20,8 +20,8 @@ import java.net.UnknownHostException;
 import java.util.HashSet;
 import java.util.Set;

-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.util.StringUtils;

 import com.mongodb.ServerAddress;
@@ -31,10 +31,11 @@ import com.mongodb.ServerAddress;
 * 
 * @author Mark Pollack
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public class ServerAddressPropertyEditor extends PropertyEditorSupport {

-	private static final Log LOG = LogFactory.getLog(ServerAddressPropertyEditor.class);
+	private static final Logger LOG = LoggerFactory.getLogger(ServerAddressPropertyEditor.class);

 	/*
 	 * (non-Javadoc)
@@ -43,6 +44,11 @@ public class ServerAddressPropertyEditor extends PropertyEditorSupport {
 	@Override
 	public void setAsText(String replicaSetString) {

+		if (!StringUtils.hasText(replicaSetString)) {
+			setValue(null);
+			return;
+		}
+
 		String[] replicaSetStringArray = StringUtils.commaDelimitedListToStringArray(replicaSetString);
 		Set<ServerAddress> serverAddresses = new HashSet<ServerAddress>(replicaSetStringArray.length);

@@ -74,7 +80,7 @@ public class ServerAddressPropertyEditor extends PropertyEditorSupport {
 		String[] hostAndPort = StringUtils.delimitedListToStringArray(source.trim(), ":");

 		if (!StringUtils.hasText(source) || hostAndPort.length > 2) {
-			LOG.warn(String.format("Could not parse address source '%s'. Check your replica set configuration!", source));
+			LOG.warn("Could not parse address source '{}'. Check your replica set configuration!", source);
 			return null;
 		}

@@ -82,9 +88,9 @@ public class ServerAddressPropertyEditor extends PropertyEditorSupport {
 			return hostAndPort.length == 1 ? new ServerAddress(hostAndPort[0]) : new ServerAddress(hostAndPort[0],
 					Integer.parseInt(hostAndPort[1]));
 		} catch (UnknownHostException e) {
-			LOG.warn(String.format("Could not parse host '%s'. Check your replica set configuration!", hostAndPort[0]));
+			LOG.warn("Could not parse host '{}'. Check your replica set configuration!", hostAndPort[0]);
 		} catch (NumberFormatException e) {
-			LOG.warn(String.format("Could not parse port '%s'. Check your replica set configuration!", hostAndPort[1]));
+			LOG.warn("Could not parse port '{}'. Check your replica set configuration!", hostAndPort[1]);
 		}

 		return null;
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultIndexOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultIndexOperations.java
@@ -16,9 +16,7 @@
 package org.springframework.data.mongodb.core;

 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;

 import org.springframework.dao.DataAccessException;
 import org.springframework.data.mongodb.core.index.IndexDefinition;
@@ -131,7 +129,6 @@ public class DefaultIndexOperations implements IndexOperations {
 					DBObject keyDbObject = (DBObject) ix.get("key");
 					int numberOfElements = keyDbObject.keySet().size();

-					Map<String, Order> keyOrderMap = new HashMap<String, Order>();
 					List<IndexField> indexFields = new ArrayList<IndexField>(numberOfElements);

 					for (String key : keyDbObject.keySet()) {
@@ -139,10 +136,8 @@ public class DefaultIndexOperations implements IndexOperations {
 						Object value = keyDbObject.get(key);

 						if (Integer.valueOf(1).equals(value)) {
-							keyOrderMap.put(key, Order.ASCENDING);
 							indexFields.add(IndexField.create(key, Order.ASCENDING));
 						} else if (Integer.valueOf(-1).equals(value)) {
-							keyOrderMap.put(key, Order.DESCENDING);
 							indexFields.add(IndexField.create(key, Order.DESCENDING));
 						} else if ("2d".equals(value)) {
 							indexFields.add(IndexField.geo(key));
@@ -155,7 +150,7 @@ public class DefaultIndexOperations implements IndexOperations {
 					boolean dropDuplicates = ix.containsField("dropDups") ? (Boolean) ix.get("dropDups") : false;
 					boolean sparse = ix.containsField("sparse") ? (Boolean) ix.get("sparse") : false;

-					indexInfoList.add(new IndexInfo(keyOrderMap, indexFields, name, unique, dropDuplicates, sparse));
+					indexInfoList.add(new IndexInfo(indexFields, name, unique, dropDuplicates, sparse));
 				}

 				return indexInfoList;
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/IndexOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/IndexOperations.java
@@ -20,6 +20,7 @@ import java.util.List;
 import org.springframework.data.mongodb.core.index.IndexDefinition;
 import org.springframework.data.mongodb.core.index.IndexInfo;

+
 /**
 * Index operations on a collection.
 * 
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoAction.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoAction.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 the original author or authors.
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -13,59 +13,53 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.core;

+import org.springframework.util.Assert;
+
 import com.mongodb.DBObject;
 import com.mongodb.WriteConcern;

 /**
 * Represents an action taken against the collection. Used by {@link WriteConcernResolver} to determine a custom
- * WriteConcern based on this information.
- * 
- * Properties that will always be not-null are collectionName and defaultWriteConcern. The EntityClass is null only for
- * the MongoActionOperaton.INSERT_LIST.
- * 
+ * {@link WriteConcern} based on this information.
 * <ul>
 * <li>INSERT, SAVE have null query</li>
 * <li>REMOVE has null document</li>
- * <li>INSERT_LIST has null entityClass, document, and query</li>
+ * <li>INSERT_LIST has null entityType, document, and query</li>
 * </ul>
 * 
 * @author Mark Pollack
- * 
+ * @author Oliver Gierke
 */
 public class MongoAction {

-	private String collectionName;
-
-	private WriteConcern defaultWriteConcern;
-
-	private Class<?> entityClass;
-
-	private MongoActionOperation mongoActionOperation;
-
-	private DBObject query;
-
-	private DBObject document;
+	private final String collectionName;
+	private final WriteConcern defaultWriteConcern;
+	private final Class<?> entityType;
+	private final MongoActionOperation mongoActionOperation;
+	private final DBObject query;
+	private final DBObject document;

 	/**
-	 * Create an instance of a MongoAction
+	 * Create an instance of a {@link MongoAction}.
 	 * 
-	 * @param defaultWriteConcern the default write concern
+	 * @param defaultWriteConcern the default write concern.
 	 * @param mongoActionOperation action being taken against the collection
-	 * @param collectionName the collection name
-	 * @param entityClass the POJO that is being operated against
+	 * @param collectionName the collection name, must not be {@literal null} or empty.
+	 * @param entityType the POJO that is being operated against
 	 * @param document the converted DBObject from the POJO or Spring Update object
 	 * @param query the converted DBOjbect from the Spring Query object
 	 */
 	public MongoAction(WriteConcern defaultWriteConcern, MongoActionOperation mongoActionOperation,
-			String collectionName, Class<?> entityClass, DBObject document, DBObject query) {
-		super();
+			String collectionName, Class<?> entityType, DBObject document, DBObject query) {
+
+		Assert.hasText(collectionName, "Collection name must not be null or empty!");
+
 		this.defaultWriteConcern = defaultWriteConcern;
 		this.mongoActionOperation = mongoActionOperation;
 		this.collectionName = collectionName;
-		this.entityClass = entityClass;
+		this.entityType = entityType;
 		this.query = query;
 		this.document = document;
 	}
@@ -78,8 +72,16 @@ public class MongoAction {
 		return defaultWriteConcern;
 	}

+	/**
+	 * @deprecated use {@link #getEntityType()} instead.
+	 */
+	@Deprecated
 	public Class<?> getEntityClass() {
-		return entityClass;
+		return entityType;
+	}
+
+	public Class<?> getEntityType() {
+		return entityType;
 	}

 	public MongoActionOperation getMongoActionOperation() {
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoActionOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoActionOperation.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 the original author or authors.
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -20,8 +20,8 @@ package org.springframework.data.mongodb.core;
 * for a given mutating operation
 * 
 * @author Mark Pollack
+ * @author Oliver Gierke
 * @see MongoAction
- * 
 */
 public enum MongoActionOperation {

--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoAdmin.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoAdmin.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2011 the original author or authors.
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -15,32 +15,28 @@
 */
 package org.springframework.data.mongodb.core;

-import com.mongodb.DB;
-import com.mongodb.Mongo;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.springframework.data.authentication.UserCredentials;
 import org.springframework.jmx.export.annotation.ManagedOperation;
 import org.springframework.jmx.export.annotation.ManagedResource;
+import org.springframework.util.Assert;
+
+import com.mongodb.DB;
+import com.mongodb.Mongo;

 /**
 * Mongo server administration exposed via JMX annotations
 * 
 * @author Mark Pollack
 */
-
@ManagedResource(description = "Mongo Admin Operations")
 public class MongoAdmin implements MongoAdminOperations {

-	/**
-	 * Logger available to subclasses
-	 */
-	protected final Log logger = LogFactory.getLog(getClass());
-
-	private Mongo mongo;
+	private final Mongo mongo;
 	private String username;
 	private String password;

 	public MongoAdmin(Mongo mongo) {
+		Assert.notNull(mongo);
 		this.mongo = mongo;
 	}

@@ -83,11 +79,10 @@ public class MongoAdmin implements MongoAdminOperations {
 	 * @param password The password to use
 	 */
 	public void setPassword(String password) {
-
 		this.password = password;
 	}

 	DB getDB(String databaseName) {
-		return MongoDbUtils.getDB(mongo, databaseName, username, password == null ? null : password.toCharArray());
+		return MongoDbUtils.getDB(mongo, databaseName, new UserCredentials(username, password));
 	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoDbUtils.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoDbUtils.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2011 the original author or authors.
+ * Copyright 2010-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -15,28 +15,29 @@
 */
 package org.springframework.data.mongodb.core;

-import com.mongodb.DB;
-import com.mongodb.Mongo;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.data.authentication.UserCredentials;
 import org.springframework.data.mongodb.CannotGetMongoDbConnectionException;
 import org.springframework.transaction.support.TransactionSynchronizationManager;
 import org.springframework.util.Assert;

+import com.mongodb.DB;
+import com.mongodb.Mongo;
+
 /**
- * Helper class featuring helper methods for internal MongoDb classes.
- * <p/>
- * <p>
- * Mainly intended for internal use within the framework.
+ * Helper class featuring helper methods for internal MongoDb classes. Mainly intended for internal use within the
+ * framework.
 * 
 * @author Thomas Risberg
 * @author Graeme Rocher
 * @author Oliver Gierke
+ * @author Randy Watler
 * @since 1.0
 */
 public abstract class MongoDbUtils {

-	private static final Log LOGGER = LogFactory.getLog(MongoDbUtils.class);
+	private static final Logger LOGGER = LoggerFactory.getLogger(MongoDbUtils.class);

 	/**
 	 * Private constructor to prevent instantiation.
@@ -48,74 +49,93 @@ public abstract class MongoDbUtils {
 	/**
 	 * Obtains a {@link DB} connection for the given {@link Mongo} instance and database name
 	 * 
-	 * @param mongo The {@link Mongo} instance
-	 * @param databaseName The database name
-	 * @return The {@link DB} connection
+	 * @param mongo the {@link Mongo} instance, must not be {@literal null}.
+	 * @param databaseName the database name, must not be {@literal null} or empty.
+	 * @return the {@link DB} connection
 	 */
 	public static DB getDB(Mongo mongo, String databaseName) {
-		return doGetDB(mongo, databaseName, null, null, true);
+		return doGetDB(mongo, databaseName, UserCredentials.NO_CREDENTIALS, true);
 	}

 	/**
 	 * Obtains a {@link DB} connection for the given {@link Mongo} instance and database name
 	 * 
-	 * @param mongo The {@link Mongo} instance
-	 * @param databaseName The database name
-	 * @param username The username to authenticate with
-	 * @param password The password to authenticate with
-	 * @return The {@link DB} connection
+	 * @param mongo the {@link Mongo} instance, must not be {@literal null}.
+	 * @param databaseName the database name, must not be {@literal null} or empty.
+	 * @param credentials the credentials to use, must not be {@literal null}.
+	 * @return the {@link DB} connection
 	 */
-	public static DB getDB(Mongo mongo, String databaseName, String username, char[] password) {
-		return doGetDB(mongo, databaseName, username, password, true);
+	public static DB getDB(Mongo mongo, String databaseName, UserCredentials credentials) {
+
+		Assert.notNull(mongo, "No Mongo instance specified!");
+		Assert.hasText(databaseName, "Database name must be given!");
+		Assert.notNull(credentials, "Credentials must not be null, use UserCredentials.NO_CREDENTIALS!");
+
+		return doGetDB(mongo, databaseName, credentials, true);
 	}

-	public static DB doGetDB(Mongo mongo, String databaseName, String username, char[] password, boolean allowCreate) {
-		Assert.notNull(mongo, "No Mongo instance specified");
+	private static DB doGetDB(Mongo mongo, String databaseName, UserCredentials credentials, boolean allowCreate) {

 		DbHolder dbHolder = (DbHolder) TransactionSynchronizationManager.getResource(mongo);
-		if (dbHolder != null && !dbHolder.isEmpty()) {
-			// pre-bound Mongo DB
-			DB db = null;
-			if (TransactionSynchronizationManager.isSynchronizationActive() && dbHolder.doesNotHoldNonDefaultDB()) {
-				// Spring transaction management is active ->
-				db = dbHolder.getDB();
-				if (db != null && !dbHolder.isSynchronizedWithTransaction()) {
-					LOGGER.debug("Registering Spring transaction synchronization for existing Mongo DB");
-					TransactionSynchronizationManager.registerSynchronization(new MongoSynchronization(dbHolder, mongo));
-					dbHolder.setSynchronizedWithTransaction(true);
-				}
+
+		// Do we have a populated holder and TX sync active?
+		if (dbHolder != null && !dbHolder.isEmpty() && TransactionSynchronizationManager.isSynchronizationActive()) {
+
+			DB db = dbHolder.getDB(databaseName);
+
+			// DB found but not yet synchronized
+			if (db != null && !dbHolder.isSynchronizedWithTransaction()) {
+
+				LOGGER.debug("Registering Spring transaction synchronization for existing MongoDB {}.", databaseName);
+
+				TransactionSynchronizationManager.registerSynchronization(new MongoSynchronization(dbHolder, mongo));
+				dbHolder.setSynchronizedWithTransaction(true);
 			}
+
 			if (db != null) {
 				return db;
 			}
 		}

-		LOGGER.trace("Getting Mongo Database name=[" + databaseName + "]");
-		DB db = mongo.getDB(databaseName);
+		// Lookup fresh database instance
+		LOGGER.debug("Getting Mongo Database name=[{}]", databaseName);

-		boolean credentialsGiven = username != null && password != null;
-		if (credentialsGiven && !db.isAuthenticated()) {
-			// Note, can only authenticate once against the same com.mongodb.DB object.
-			if (!db.authenticate(username, password)) {
-				throw new CannotGetMongoDbConnectionException("Failed to authenticate to database [" + databaseName
-						+ "], username = [" + username + "], password = [" + new String(password) + "]", databaseName, username,
-						password);
+		DB db = mongo.getDB(databaseName);
+		boolean credentialsGiven = credentials.hasUsername() && credentials.hasPassword();
+
+		synchronized (db) {
+
+			if (credentialsGiven && !db.isAuthenticated()) {
+
+				String username = credentials.getUsername();
+				String password = credentials.hasPassword() ? credentials.getPassword() : null;
+
+				if (!db.authenticate(username, password == null ? null : password.toCharArray())) {
+					throw new CannotGetMongoDbConnectionException("Failed to authenticate to database [" + databaseName + "], "
+							+ credentials.toString(), databaseName, credentials);
+				}
 			}
 		}

-		// Use same Session for further Mongo actions within the transaction.
-		// Thread object will get removed by synchronization at transaction completion.
+		// TX sync active, bind new database to thread
 		if (TransactionSynchronizationManager.isSynchronizationActive()) {
-			// We're within a Spring-managed transaction, possibly from JtaTransactionManager.
-			LOGGER.debug("Registering Spring transaction synchronization for new Hibernate Session");
+
+			LOGGER.debug("Registering Spring transaction synchronization for MongoDB instance {}.", databaseName);
+
 			DbHolder holderToUse = dbHolder;
+
 			if (holderToUse == null) {
-				holderToUse = new DbHolder(db);
+				holderToUse = new DbHolder(databaseName, db);
 			} else {
-				holderToUse.addDB(db);
+				holderToUse.addDB(databaseName, db);
 			}
-			TransactionSynchronizationManager.registerSynchronization(new MongoSynchronization(holderToUse, mongo));
-			holderToUse.setSynchronizedWithTransaction(true);
+
+			// synchronize holder only if not yet synchronized
+			if (!holderToUse.isSynchronizedWithTransaction()) {
+				TransactionSynchronizationManager.registerSynchronization(new MongoSynchronization(holderToUse, mongo));
+				holderToUse.setSynchronizedWithTransaction(true);
+			}
+
 			if (holderToUse != dbHolder) {
 				TransactionSynchronizationManager.bindResource(mongo, holderToUse);
 			}
@@ -139,11 +159,12 @@ public abstract class MongoDbUtils {
 	 * @return whether the DB is transactional
 	 */
 	public static boolean isDBTransactional(DB db, Mongo mongo) {
+
 		if (mongo == null) {
 			return false;
 		}
 		DbHolder dbHolder = (DbHolder) TransactionSynchronizationManager.getResource(mongo);
-		return (dbHolder != null && dbHolder.containsDB(db));
+		return dbHolder != null && dbHolder.containsDB(db);
 	}

 	/**
@@ -152,6 +173,7 @@ public abstract class MongoDbUtils {
 	 * @param db the DB to close (may be <code>null</code>)
 	 */
 	public static void closeDB(DB db) {
+
 		if (db != null) {
 			LOGGER.debug("Closing Mongo DB object");
 			try {
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoExceptionTranslator.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoExceptionTranslator.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2011 the original author or authors.
+ * Copyright 2010-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -15,12 +15,6 @@
 */
 package org.springframework.data.mongodb.core;

-import com.mongodb.MongoException;
-import com.mongodb.MongoException.CursorNotFound;
-import com.mongodb.MongoException.DuplicateKey;
-import com.mongodb.MongoException.Network;
-import com.mongodb.MongoInternalException;
-
 import org.springframework.dao.DataAccessException;
 import org.springframework.dao.DataAccessResourceFailureException;
 import org.springframework.dao.DuplicateKeyException;
@@ -29,21 +23,26 @@ import org.springframework.dao.InvalidDataAccessResourceUsageException;
 import org.springframework.dao.support.PersistenceExceptionTranslator;
 import org.springframework.data.mongodb.UncategorizedMongoDbException;

+import com.mongodb.MongoException;
+import com.mongodb.MongoException.CursorNotFound;
+import com.mongodb.MongoException.DuplicateKey;
+import com.mongodb.MongoException.Network;
+import com.mongodb.MongoInternalException;
+
 /**
 * Simple {@link PersistenceExceptionTranslator} for Mongo. Convert the given runtime exception to an appropriate
 * exception from the {@code org.springframework.dao} hierarchy. Return {@literal null} if no translation is
 * appropriate: any other exception may have resulted from user code, and should not be translated.
 * 
 * @author Oliver Gierke
+ * @author Michal Vich
 */
 public class MongoExceptionTranslator implements PersistenceExceptionTranslator {

 	/*
-	  * (non-Javadoc)
-	  *
-	  * @see org.springframework.dao.support.PersistenceExceptionTranslator#
-	  * translateExceptionIfPossible(java.lang.RuntimeException)
-	  */
+	 * (non-Javadoc)
+	 * @see org.springframework.dao.support.PersistenceExceptionTranslator#translateExceptionIfPossible(java.lang.RuntimeException)
+	 */
 	public DataAccessException translateExceptionIfPossible(RuntimeException ex) {

 		// Check for well-known MongoException subclasses.
@@ -52,14 +51,23 @@ public class MongoExceptionTranslator implements PersistenceExceptionTranslator
 		if (ex instanceof DuplicateKey) {
 			return new DuplicateKeyException(ex.getMessage(), ex);
 		}
+
 		if (ex instanceof Network) {
 			return new DataAccessResourceFailureException(ex.getMessage(), ex);
 		}
+
 		if (ex instanceof CursorNotFound) {
 			return new DataAccessResourceFailureException(ex.getMessage(), ex);
 		}
+
+		if (ex instanceof MongoInternalException) {
+			return new InvalidDataAccessResourceUsageException(ex.getMessage(), ex);
+		}
+
 		if (ex instanceof MongoException) {
+
 			int code = ((MongoException) ex).getCode();
+
 			if (code == 11000 || code == 11001) {
 				throw new DuplicateKeyException(ex.getMessage(), ex);
 			} else if (code == 12000 || code == 13440) {
@@ -69,9 +77,6 @@ public class MongoExceptionTranslator implements PersistenceExceptionTranslator
 			}
 			return new UncategorizedMongoDbException(ex.getMessage(), ex);
 		}
-		if (ex instanceof MongoInternalException) {
-			return new InvalidDataAccessResourceUsageException(ex.getMessage(), ex);
-		}

 		// If we get here, we have an exception that resulted from user code,
 		// rather than the persistence provider, so we return null to indicate
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoFactoryBean.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoFactoryBean.java
@@ -15,7 +15,9 @@
 */
 package org.springframework.data.mongodb.core;

-import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
 import java.util.List;

 import org.springframework.beans.factory.DisposableBean;
@@ -24,6 +26,7 @@ import org.springframework.beans.factory.InitializingBean;
 import org.springframework.dao.DataAccessException;
 import org.springframework.dao.support.PersistenceExceptionTranslator;
 import org.springframework.data.mongodb.CannotGetMongoDbConnectionException;
+import org.springframework.util.StringUtils;

 import com.mongodb.Mongo;
 import com.mongodb.MongoOptions;
@@ -36,6 +39,7 @@ import com.mongodb.WriteConcern;
 * @author Thomas Risberg
 * @author Graeme Rocher
 * @author Oliver Gierke
+ * @author Thomas Darimont
 * @since 1.0
 */
 public class MongoFactoryBean implements FactoryBean<Mongo>, InitializingBean, DisposableBean,
@@ -57,11 +61,38 @@ public class MongoFactoryBean implements FactoryBean<Mongo>, InitializingBean, D
 	}

 	public void setReplicaSetSeeds(ServerAddress[] replicaSetSeeds) {
-		this.replicaSetSeeds = Arrays.asList(replicaSetSeeds);
+		this.replicaSetSeeds = filterNonNullElementsAsList(replicaSetSeeds);
 	}

+	/**
+	 * @deprecated use {@link #setReplicaSetSeeds(ServerAddress[])} instead
+	 * 
+	 * @param replicaPair
+	 */
+	@Deprecated
 	public void setReplicaPair(ServerAddress[] replicaPair) {
-		this.replicaPair = Arrays.asList(replicaPair);
+		this.replicaPair = filterNonNullElementsAsList(replicaPair);
+	}
+
+	/**
+	 * @param elements the elements to filter <T>
+	 * @return a new unmodifiable {@link List#} from the given elements without nulls
+	 */
+	private <T> List<T> filterNonNullElementsAsList(T[] elements) {
+
+		if (elements == null) {
+			return Collections.emptyList();
+		}
+
+		List<T> candidateElements = new ArrayList<T>();
+
+		for (T element : elements) {
+			if (element != null) {
+				candidateElements.add(element);
+			}
+		}
+
+		return Collections.unmodifiableList(candidateElements);
 	}

 	public void setHost(String host) {
@@ -126,15 +157,15 @@ public class MongoFactoryBean implements FactoryBean<Mongo>, InitializingBean, D
 			mongoOptions = new MongoOptions();
 		}

-		if (replicaPair != null) {
+		if (!isNullOrEmpty(replicaPair)) {
 			if (replicaPair.size() < 2) {
 				throw new CannotGetMongoDbConnectionException("A replica pair must have two server entries");
 			}
 			mongo = new Mongo(replicaPair.get(0), replicaPair.get(1), mongoOptions);
-		} else if (replicaSetSeeds != null) {
+		} else if (!isNullOrEmpty(replicaSetSeeds)) {
 			mongo = new Mongo(replicaSetSeeds, mongoOptions);
 		} else {
-			String mongoHost = host != null ? host : defaultOptions.getHost();
+			String mongoHost = StringUtils.hasText(host) ? host : defaultOptions.getHost();
 			mongo = port != null ? new Mongo(new ServerAddress(mongoHost, port), mongoOptions) : new Mongo(mongoHost,
 					mongoOptions);
 		}
@@ -146,6 +177,10 @@ public class MongoFactoryBean implements FactoryBean<Mongo>, InitializingBean, D
 		this.mongo = mongo;
 	}

+	private boolean isNullOrEmpty(Collection<?> elements) {
+		return elements == null || elements.isEmpty();
+	}
+
 	/* 
 	 * (non-Javadoc)
 	 * @see org.springframework.beans.factory.DisposableBean#destroy()
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoOperations.java
@@ -247,7 +247,7 @@ public interface MongoOperations {
 	 * Query for a list of objects of type T from the collection used by the entity class.
 	 * <p/>
 	 * The object is converted from the MongoDB native representation using an instance of {@see MongoConverter}. Unless
-	 * configured otherwise, an instance of SimpleMongoConverter will be used.
+	 * configured otherwise, an instance of MappingMongoConverter will be used.
 	 * <p/>
 	 * If your collection does not contain a homogeneous collection of types, this operation will not be an efficient way
 	 * to map objects since the test for class type is done in the client and not on the server.
@@ -261,7 +261,7 @@ public interface MongoOperations {
 	 * Query for a list of objects of type T from the specified collection.
 	 * <p/>
 	 * The object is converted from the MongoDB native representation using an instance of {@see MongoConverter}. Unless
-	 * configured otherwise, an instance of SimpleMongoConverter will be used.
+	 * configured otherwise, an instance of MappingMongoConverter will be used.
 	 * <p/>
 	 * If your collection does not contain a homogeneous collection of types, this operation will not be an efficient way
 	 * to map objects since the test for class type is done in the client and not on the server.
@@ -382,7 +382,7 @@ public interface MongoOperations {
 	 * specified type.
 	 * <p/>
 	 * The object is converted from the MongoDB native representation using an instance of {@see MongoConverter}. Unless
-	 * configured otherwise, an instance of SimpleMongoConverter will be used.
+	 * configured otherwise, an instance of MappingMongoConverter will be used.
 	 * <p/>
 	 * The query is specified as a {@link Query} which can be created either using the {@link BasicQuery} or the more
 	 * feature rich {@link Query}.
@@ -399,7 +399,7 @@ public interface MongoOperations {
 	 * type.
 	 * <p/>
 	 * The object is converted from the MongoDB native representation using an instance of {@see MongoConverter}. Unless
-	 * configured otherwise, an instance of SimpleMongoConverter will be used.
+	 * configured otherwise, an instance of MappingMongoConverter will be used.
 	 * <p/>
 	 * The query is specified as a {@link Query} which can be created either using the {@link BasicQuery} or the more
 	 * feature rich {@link Query}.
@@ -417,7 +417,7 @@ public interface MongoOperations {
 	 * Map the results of an ad-hoc query on the collection for the entity class to a List of the specified type.
 	 * <p/>
 	 * The object is converted from the MongoDB native representation using an instance of {@see MongoConverter}. Unless
-	 * configured otherwise, an instance of SimpleMongoConverter will be used.
+	 * configured otherwise, an instance of MappingMongoConverter will be used.
 	 * <p/>
 	 * The query is specified as a {@link Query} which can be created either using the {@link BasicQuery} or the more
 	 * feature rich {@link Query}.
@@ -433,7 +433,7 @@ public interface MongoOperations {
 	 * Map the results of an ad-hoc query on the specified collection to a List of the specified type.
 	 * <p/>
 	 * The object is converted from the MongoDB native representation using an instance of {@see MongoConverter}. Unless
-	 * configured otherwise, an instance of SimpleMongoConverter will be used.
+	 * configured otherwise, an instance of MappingMongoConverter will be used.
 	 * <p/>
 	 * The query is specified as a {@link Query} which can be created either using the {@link BasicQuery} or the more
 	 * feature rich {@link Query}.
@@ -501,7 +501,7 @@ public interface MongoOperations {
 	 * type. The first document that matches the query is returned and also removed from the collection in the database.
 	 * <p/>
 	 * The object is converted from the MongoDB native representation using an instance of {@see MongoConverter}. Unless
-	 * configured otherwise, an instance of SimpleMongoConverter will be used.
+	 * configured otherwise, an instance of MappingMongoConverter will be used.
 	 * <p/>
 	 * The query is specified as a {@link Query} which can be created either using the {@link BasicQuery} or the more
 	 * feature rich {@link Query}.
@@ -555,7 +555,7 @@ public interface MongoOperations {
 	 * Insert the object into the specified collection.
 	 * <p/>
 	 * The object is converted to the MongoDB native representation using an instance of {@see MongoConverter}. Unless
-	 * configured otherwise, an instance of SimpleMongoConverter will be used.
+	 * configured otherwise, an instance of MappingMongoConverter will be used.
 	 * <p/>
 	 * Insert is used to initially store the object into the database. To update an existing object use the save method.
 	 * 
@@ -593,7 +593,7 @@ public interface MongoOperations {
 	 * object is not already present, that is an 'upsert'.
 	 * <p/>
 	 * The object is converted to the MongoDB native representation using an instance of {@see MongoConverter}. Unless
-	 * configured otherwise, an instance of SimpleMongoConverter will be used.
+	 * configured otherwise, an instance of MappingMongoConverter will be used.
 	 * <p/>
 	 * If you object has an "Id' property, it will be set with the generated Id from MongoDB. If your Id property is a
 	 * String then MongoDB ObjectId will be used to populate that string. Otherwise, the conversion from ObjectId to your
@@ -610,7 +610,7 @@ public interface MongoOperations {
 	 * is an 'upsert'.
 	 * <p/>
 	 * The object is converted to the MongoDB native representation using an instance of {@see MongoConverter}. Unless
-	 * configured otherwise, an instance of SimpleMongoConverter will be used.
+	 * configured otherwise, an instance of MappingMongoConverter will be used.
 	 * <p/>
 	 * If you object has an "Id' property, it will be set with the generated Id from MongoDB. If your Id property is a
 	 * String then MongoDB ObjectId will be used to populate that string. Otherwise, the conversion from ObjectId to your
@@ -734,4 +734,4 @@ public interface MongoOperations {
 	 * @return
 	 */
 	MongoConverter getConverter();
-}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoTemplate.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoTemplate.java
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/QueryMapper.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/QueryMapper.java
@@ -1,168 +0,0 @@
-/*
- * Copyright (c) 2011 by the original author(s).
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.springframework.data.mongodb.core;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Iterator;
-import java.util.List;
-
-import org.bson.types.BasicBSONList;
-import org.bson.types.ObjectId;
-import org.springframework.core.convert.ConversionException;
-import org.springframework.core.convert.ConversionService;
-import org.springframework.data.mapping.PersistentEntity;
-import org.springframework.data.mongodb.core.convert.MongoConverter;
-import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
-import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
-import org.springframework.util.Assert;
-
-import com.mongodb.BasicDBList;
-import com.mongodb.BasicDBObject;
-import com.mongodb.DBObject;
-
-/**
- * A helper class to encapsulate any modifications of a Query object before it gets submitted to the database.
- * 
- * @author Jon Brisbin <jbrisbin@vmware.com>
- * @author Oliver Gierke
- */
-public class QueryMapper {
-
-	private static final List<String> DEFAULT_ID_NAMES = Arrays.asList("id", "_id");
-	private static final String N_OR_PATTERN = "\\$.*or";
-
-	private final ConversionService conversionService;
-	private final MongoConverter converter;
-
-	/**
-	 * Creates a new {@link QueryMapper} with the given {@link MongoConverter}.
-	 * 
-	 * @param converter must not be {@literal null}.
-	 */
-	public QueryMapper(MongoConverter converter) {
-		Assert.notNull(converter);
-		this.conversionService = converter.getConversionService();
-		this.converter = converter;
-	}
-
-	/**
-	 * Replaces the property keys used in the given {@link DBObject} with the appropriate keys by using the
-	 * {@link PersistentEntity} metadata.
-	 * 
-	 * @param query must not be {@literal null}.
-	 * @param entity can be {@literal null}.
-	 * @return
-	 */
-	public DBObject getMappedObject(DBObject query, MongoPersistentEntity<?> entity) {
-
-		DBObject newDbo = new BasicDBObject();
-
-		for (String key : query.keySet()) {
-
-			String newKey = key;
-			Object value = query.get(key);
-
-			if (isIdKey(key, entity)) {
-				if (value instanceof DBObject) {
-					DBObject valueDbo = (DBObject) value;
-					if (valueDbo.containsField("$in") || valueDbo.containsField("$nin")) {
-						String inKey = valueDbo.containsField("$in") ? "$in" : "$nin";
-						List<Object> ids = new ArrayList<Object>();
-						for (Object id : (Iterable<?>) valueDbo.get(inKey)) {
-							ids.add(convertId(id));
-						}
-						valueDbo.put(inKey, ids.toArray(new Object[ids.size()]));
-					} else {
-						value = getMappedObject((DBObject) value, null);
-					}
-				} else {
-					value = convertId(value);
-				}
-				newKey = "_id";
-			} else if (key.matches(N_OR_PATTERN)) {
-				// $or/$nor
-				Iterable<?> conditions = (Iterable<?>) value;
-				BasicBSONList newConditions = new BasicBSONList();
-				Iterator<?> iter = conditions.iterator();
-				while (iter.hasNext()) {
-					newConditions.add(getMappedObject((DBObject) iter.next(), null));
-				}
-				value = newConditions;
-			} else if (key.equals("$ne")) {
-				value = convertId(value);
-			}
-
-			newDbo.put(newKey, convertSimpleOrDBObject(value, null));
-		}
-
-		return newDbo;
-	}
-
-	/**
-	 * Retriggers mapping if the given source is a {@link DBObject} or simply invokes the
-	 * 
-	 * @param source
-	 * @param entity
-	 * @return
-	 */
-	private Object convertSimpleOrDBObject(Object source, MongoPersistentEntity<?> entity) {
-
-		if (source instanceof BasicDBList) {
-			return converter.convertToMongoType(source);
-		}
-
-		if (source instanceof DBObject) {
-			return getMappedObject((DBObject) source, entity);
-		}
-
-		return converter.convertToMongoType(source);
-	}
-
-	/**
-	 * Returns whether the given key will be considered an id key.
-	 * 
-	 * @param key
-	 * @param entity
-	 * @return
-	 */
-	private boolean isIdKey(String key, MongoPersistentEntity<?> entity) {
-
-		if (null != entity && entity.getIdProperty() != null) {
-			MongoPersistentProperty idProperty = entity.getIdProperty();
-			return idProperty.getName().equals(key) || idProperty.getFieldName().equals(key);
-		}
-
-		return DEFAULT_ID_NAMES.contains(key);
-	}
-
-	/**
-	 * Converts the given raw id value into either {@link ObjectId} or {@link String}.
-	 * 
-	 * @param id
-	 * @return
-	 */
-	public Object convertId(Object id) {
-
-		try {
-			return conversionService.convert(id, ObjectId.class);
-		} catch (ConversionException e) {
-			// Ignore
-		}
-
-		return converter.convertToMongoType(id);
-	}
-}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/SimpleMongoDbFactory.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/SimpleMongoDbFactory.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 the original author or authors.
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -47,17 +47,17 @@ public class SimpleMongoDbFactory implements DisposableBean, MongoDbFactory {
 	 * Create an instance of {@link SimpleMongoDbFactory} given the {@link Mongo} instance and database name.
 	 * 
 	 * @param mongo Mongo instance, must not be {@literal null}.
-	 * @param databaseName database name, not be {@literal null}.
+	 * @param databaseName database name, not be {@literal null} or empty.
 	 */
 	public SimpleMongoDbFactory(Mongo mongo, String databaseName) {
-		this(mongo, databaseName, new UserCredentials(), false);
+		this(mongo, databaseName, UserCredentials.NO_CREDENTIALS, false);
 	}

 	/**
 	 * Create an instance of SimpleMongoDbFactory given the Mongo instance, database name, and username/password
 	 * 
 	 * @param mongo Mongo instance, must not be {@literal null}.
-	 * @param databaseName Database name, must not be {@literal null}.
+	 * @param databaseName Database name, must not be {@literal null} or empty.
 	 * @param credentials username and password.
 	 */
 	public SimpleMongoDbFactory(Mongo mongo, String databaseName, UserCredentials credentials) {
@@ -87,7 +87,7 @@ public class SimpleMongoDbFactory implements DisposableBean, MongoDbFactory {
 		this.mongo = mongo;
 		this.databaseName = databaseName;
 		this.mongoInstanceCreated = mongoInstanceCreated;
-		this.credentials = credentials == null ? new UserCredentials() : credentials;
+		this.credentials = credentials == null ? UserCredentials.NO_CREDENTIALS : credentials;
 	}

 	/**
@@ -115,10 +115,7 @@ public class SimpleMongoDbFactory implements DisposableBean, MongoDbFactory {

 		Assert.hasText(dbName, "Database name must not be empty.");

-		String username = credentials.getUsername();
-		String password = credentials.getPassword();
-
-		DB db = MongoDbUtils.getDB(mongo, dbName, username, password == null ? null : password.toCharArray());
+		DB db = MongoDbUtils.getDB(mongo, dbName, credentials);

 		if (writeConcern != null) {
 			db.setWriteConcern(writeConcern);
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/WriteConcernResolver.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/WriteConcernResolver.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 the original author or authors.
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -13,27 +13,25 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.core;

 import com.mongodb.WriteConcern;

 /**
- * A strategy interface to determine the WriteConcern to use for a given MongoDbAction.
- * 
- * Return the passed in default WriteConcern (a property on MongoAction) if no determination can be made.
+ * A strategy interface to determine the {@link WriteConcern} to use for a given {@link MongoAction}. Return the passed
+ * in default {@link WriteConcern} (a property on {@link MongoAction}) if no determination can be made.
 * 
 * @author Mark Pollack
- * 
+ * @author Oliver Gierke
 */
 public interface WriteConcernResolver {

 	/**
-	 * Resolve the WriteConcern given the MongoAction
+	 * Resolve the {@link WriteConcern} given the {@link MongoAction}.
 	 * 
-	 * @param action describes the context of the Mongo action. Contains a default WriteConcern to use if one should not
-	 *          be resolved.
-	 * @return a WriteConcern based on the passed in MongoAction value, maybe null
+	 * @param action describes the context of the Mongo action. Contains a default {@link WriteConcern} to use if one
+	 *          should not be resolved.
+	 * @return a {@link WriteConcern} based on the passed in {@link MongoAction} value, maybe {@literal null}.
 	 */
 	WriteConcern resolve(MongoAction action);
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/WriteResultChecking.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/WriteResultChecking.java
@@ -1,5 +1,28 @@
+/*
+ * Copyright 2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.springframework.data.mongodb.core;

+/**
+ * Enum to represent how strict the check of {@link com.mongodb.WriteResult} shall be. It can either be skipped entirely
+ * (use {@link #NONE}), or errors can be logged ({@link #LOG}) or cause an exception to be thrown {@link #EXCEPTION}.
+ * 
+ * @author Thomas Risberg
+ * @author Oliver Gierke
+ */
 public enum WriteResultChecking {
+
 	NONE, LOG, EXCEPTION
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/AbstractMongoConverter.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/AbstractMongoConverter.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -13,7 +13,6 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.core.convert;

 import java.math.BigInteger;
@@ -23,6 +22,7 @@ import org.springframework.beans.factory.InitializingBean;
 import org.springframework.core.convert.ConversionService;
 import org.springframework.core.convert.support.ConversionServiceFactory;
 import org.springframework.core.convert.support.GenericConversionService;
+import org.springframework.data.convert.EntityInstantiators;
 import org.springframework.data.mongodb.core.convert.MongoConverters.BigIntegerToObjectIdConverter;
 import org.springframework.data.mongodb.core.convert.MongoConverters.ObjectIdToBigIntegerConverter;
 import org.springframework.data.mongodb.core.convert.MongoConverters.ObjectIdToStringConverter;
@@ -32,13 +32,14 @@ import org.springframework.data.mongodb.core.convert.MongoConverters.StringToObj
 * Base class for {@link MongoConverter} implementations. Sets up a {@link GenericConversionService} and populates basic
 * converters. Allows registering {@link CustomConversions}.
 * 
- * @author Jon Brisbin <jbrisbin@vmware.com>
- * @author Oliver Gierke ogierke@vmware.com
+ * @author Jon Brisbin
+ * @author Oliver Gierke
 */
 public abstract class AbstractMongoConverter implements MongoConverter, InitializingBean {

 	protected final GenericConversionService conversionService;
 	protected CustomConversions conversions = new CustomConversions();
+	protected EntityInstantiators instantiators = new EntityInstantiators();

 	/**
 	 * Creates a new {@link AbstractMongoConverter} using the given {@link GenericConversionService}.
@@ -60,6 +61,15 @@ public abstract class AbstractMongoConverter implements MongoConverter, Initiali
 		this.conversions = conversions;
 	}

+	/**
+	 * Registers {@link EntityInstantiators} to customize entity instantiation.
+	 * 
+	 * @param instantiators
+	 */
+	public void setInstantiators(EntityInstantiators instantiators) {
+		this.instantiators = instantiators == null ? new EntityInstantiators() : instantiators;
+	}
+
 	/**
 	 * Registers additional converters that will be available when using the {@link ConversionService} directly (e.g. for
 	 * id conversion). These converters are not custom conversions as they'd introduce unwanted conversions (e.g.
@@ -83,6 +93,14 @@ public abstract class AbstractMongoConverter implements MongoConverter, Initiali
 		conversions.registerConvertersIn(conversionService);
 	}

+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.convert.MongoWriter#convertToMongoType(java.lang.Object)
+	 */
+	public Object convertToMongoType(Object obj) {
+		return convertToMongoType(obj, null);
+	}
+
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.mongodb.core.core.convert.MongoConverter#getConversionService()
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/CustomConversions.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/CustomConversions.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -17,13 +17,15 @@ package org.springframework.data.mongodb.core.convert;

 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Locale;
+import java.util.Map;
 import java.util.Set;

-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.core.GenericTypeResolver;
 import org.springframework.core.convert.TypeDescriptor;
 import org.springframework.core.convert.converter.Converter;
@@ -31,6 +33,7 @@ import org.springframework.core.convert.converter.ConverterFactory;
 import org.springframework.core.convert.converter.GenericConverter;
 import org.springframework.core.convert.converter.GenericConverter.ConvertiblePair;
 import org.springframework.core.convert.support.GenericConversionService;
+import org.springframework.data.convert.JodaTimeConverters;
 import org.springframework.data.convert.ReadingConverter;
 import org.springframework.data.convert.WritingConverter;
 import org.springframework.data.mapping.model.SimpleTypeHolder;
@@ -54,7 +57,7 @@ import org.springframework.util.Assert;
 */
 public class CustomConversions {

-	private static final Log LOG = LogFactory.getLog(CustomConversions.class);
+	private static final Logger LOG = LoggerFactory.getLogger(CustomConversions.class);
 	private static final String READ_CONVERTER_NOT_SIMPLE = "Registering converter from %s to %s as reading converter although it doesn't convert from a Mongo supported type! You might wanna check you annotation setup at the converter implementation.";
 	private static final String WRITE_CONVERTER_NOT_SIMPLE = "Registering converter from %s to %s as writing converter although it doesn't convert to a Mongo supported type! You might wanna check you annotation setup at the converter implementation.";

@@ -62,6 +65,7 @@ public class CustomConversions {
 	private final Set<ConvertiblePair> writingPairs;
 	private final Set<Class<?>> customSimpleTypes;
 	private final SimpleTypeHolder simpleTypeHolder;
+	private final Map<Class<?>, HashMap<Class<?>, CacheValue>> cache;

 	private final List<Object> converters;

@@ -84,6 +88,7 @@ public class CustomConversions {
 		this.readingPairs = new HashSet<ConvertiblePair>();
 		this.writingPairs = new HashSet<ConvertiblePair>();
 		this.customSimpleTypes = new HashSet<Class<?>>();
+		this.cache = new HashMap<Class<?>, HashMap<Class<?>, CacheValue>>();

 		this.converters = new ArrayList<Object>();
 		this.converters.add(CustomToStringConverter.INSTANCE);
@@ -93,6 +98,7 @@ public class CustomConversions {
 		this.converters.add(StringToBigIntegerConverter.INSTANCE);
 		this.converters.add(URLToStringConverter.INSTANCE);
 		this.converters.add(StringToURLConverter.INSTANCE);
+		this.converters.addAll(JodaTimeConverters.getConvertersToRegister());
 		this.converters.addAll(converters);

 		for (Object c : this.converters) {
@@ -223,7 +229,7 @@ public class CustomConversions {

 	/**
 	 * Returns the target type we can write an onject of the given source type to. The returned type might be a subclass
-	 * oth the given expected type though. If {@code expexctedTargetType} is {@literal null} we will simply return the
+	 * oth the given expected type though. If {@code expectedTargetType} is {@literal null} we will simply return the
 	 * first target type matching or {@literal null} if no conversion can be found.
 	 * 
 	 * @param source must not be {@literal null}
@@ -266,9 +272,11 @@ public class CustomConversions {
 	 * @return
 	 */
 	public boolean hasCustomReadTarget(Class<?> source, Class<?> expectedTargetType) {
+
 		Assert.notNull(source);
 		Assert.notNull(expectedTargetType);
-		return getCustomTarget(source, expectedTargetType, readingPairs) != null;
+
+		return getCustomReadTarget(source, expectedTargetType) != null;
 	}

 	/**
@@ -297,8 +305,32 @@ public class CustomConversions {
 		return null;
 	}

+	private Class<?> getCustomReadTarget(Class<?> source, Class<?> expectedTargetType) {
+
+		Class<?> type = expectedTargetType == null ? PlaceholderType.class : expectedTargetType;
+
+		Map<Class<?>, CacheValue> map;
+		CacheValue toReturn;
+
+		if ((map = cache.get(source)) == null || (toReturn = map.get(type)) == null) {
+
+			Class<?> target = getCustomTarget(source, type, readingPairs);
+
+			if (cache.get(source) == null) {
+				cache.put(source, new HashMap<Class<?>, CacheValue>());
+			}
+
+			Map<Class<?>, CacheValue> value = cache.get(source);
+			toReturn = target == null ? CacheValue.NULL : new CacheValue(target);
+			value.put(type, toReturn);
+		}
+
+		return toReturn.clazz;
+	}
+
 	@WritingConverter
 	private enum CustomToStringConverter implements GenericConverter {
+
 		INSTANCE;

 		public Set<ConvertiblePair> getConvertibleTypes() {
@@ -311,4 +343,30 @@ public class CustomConversions {
 			return source.toString();
 		}
 	}
+
+	/**
+	 * Placeholder type to allow registering not-found values in the converter cache.
+	 * 
+	 * @author Patryk Wasik
+	 * @author Oliver Gierke
+	 */
+	private static class PlaceholderType {
+
+	}
+
+	/**
+	 * Wrapper to safely store {@literal null} values in the type cache.
+	 * 
+	 * @author Patryk Wasik
+	 * @author Oliver Gierke
+	 */
+	private static class CacheValue {
+
+		public static final CacheValue NULL = new CacheValue(null);
+		private final Class<?> clazz;
+
+		public CacheValue(Class<?> clazz) {
+			this.clazz = clazz;
+		}
+	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/MappedConstructor.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/MappedConstructor.java
@@ -1,180 +0,0 @@
-/*
- * Copyright 2012 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.springframework.data.mongodb.core.convert;
-
-import java.util.HashSet;
-import java.util.Set;
-
-import org.springframework.data.annotation.PersistenceConstructor;
-import org.springframework.data.mapping.PersistentEntity;
-import org.springframework.data.mapping.PersistentProperty;
-import org.springframework.data.mapping.PreferredConstructor;
-import org.springframework.data.mapping.PreferredConstructor.Parameter;
-import org.springframework.data.mapping.PropertyPath;
-import org.springframework.data.mapping.context.MappingContext;
-import org.springframework.data.mapping.context.PersistentPropertyPath;
-import org.springframework.data.mapping.model.MappingException;
-import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
-import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
-import org.springframework.data.util.TypeInformation;
-import org.springframework.util.Assert;
-
-/**
- * Abstraction for a {@link PreferredConstructor} alongside mapping information.
- * 
- * @author Oliver Gierke
- */
-class MappedConstructor {
-
-	private static final String REJECT_CONSTRUCTOR = String.format("Entity doesn't have a usable constructor, either "
-			+ "provide a custom converter or annotate a constructor with @%s!", PersistenceConstructor.class.getSimpleName());
-
-	private final Set<MappedConstructor.MappedParameter> parameters;
-
-	/**
-	 * Creates a new {@link MappedConstructor} from the given {@link MongoPersistentEntity} and {@link MappingContext}.
-	 * 
-	 * @param entity must not be {@literal null}.
-	 * @param context must not be {@literal null}.
-	 * @throws MappingException in case the {@link MongoPersistentEntity} handed in does not have a
-	 *           {@link PreferredConstructor}.
-	 */
-	public MappedConstructor(MongoPersistentEntity<?> entity,
-			MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> context) throws MappingException {
-
-		Assert.notNull(entity);
-		Assert.notNull(context);
-
-		if (entity.getPreferredConstructor() == null) {
-			throw new MappingException(REJECT_CONSTRUCTOR);
-		}
-
-		this.parameters = new HashSet<MappedConstructor.MappedParameter>();
-
-		for (Parameter<?> parameter : entity.getPreferredConstructor().getParameters()) {
-			parameters.add(new MappedParameter(parameter, entity, context));
-		}
-	}
-
-	/**
-	 * Returns whether the given {@link PersistentProperty} is referenced in a constructor argument of the
-	 * {@link PersistentEntity} backing this {@link MappedConstructor}.
-	 * 
-	 * @param property must not be {@literal null}.
-	 * @return
-	 */
-	public boolean isConstructorParameter(PersistentProperty<?> property) {
-
-		Assert.notNull(property);
-
-		for (MappedConstructor.MappedParameter parameter : parameters) {
-			if (parameter.maps(property)) {
-				return true;
-			}
-		}
-
-		return false;
-	}
-
-	/**
-	 * Returns the {@link MappedParameter} for the given {@link Parameter}.
-	 * 
-	 * @param parameter must not be {@literal null}.
-	 * @return
-	 * @throws MappingException in case no {@link MappedParameter} can be found for the given {@link Parameter}.
-	 */
-	public MappedParameter getFor(Parameter<?> parameter) {
-
-		for (MappedParameter mappedParameter : parameters) {
-			if (mappedParameter.parameter.equals(parameter)) {
-				return mappedParameter;
-			}
-		}
-
-		throw new MappingException(String.format("Didn't find a MappedParameter for %s!", parameter.toString()));
-	}
-
-	/**
-	 * Abstraction of a {@link Parameter} alongside mapping information.
-	 * 
-	 * @author Oliver Gierke
-	 */
-	static class MappedParameter {
-
-		private final MongoPersistentProperty property;
-		private final Parameter<?> parameter;
-
-		/**
-		 * Creates a new {@link MappedParameter} for the given {@link Parameter}, {@link MongoPersistentProperty} and
-		 * {@link MappingContext}.
-		 * 
-		 * @param parameter must not be {@literal null}.
-		 * @param entity must not be {@literal null}.
-		 * @param context must not be {@literal null}.
-		 */
-		public MappedParameter(Parameter<?> parameter, MongoPersistentEntity<?> entity,
-				MappingContext<? extends MongoPersistentEntity<?>, ? extends MongoPersistentProperty> context) {
-
-			Assert.notNull(parameter);
-			Assert.notNull(entity);
-			Assert.notNull(context);
-
-			this.parameter = parameter;
-
-			PropertyPath propertyPath = PropertyPath.from(parameter.getName(), entity.getType());
-			PersistentPropertyPath<? extends MongoPersistentProperty> path = context.getPersistentPropertyPath(propertyPath);
-			this.property = path == null ? null : path.getLeafProperty();
-		}
-
-		/**
-		 * Returns whether there is a SpEL expression configured for this parameter.
-		 * 
-		 * @return
-		 */
-		public boolean hasSpELExpression() {
-			return parameter.getKey() != null;
-		}
-
-		/**
-		 * Returns the field name to be used to lookup the value which in turn shall be converted into the constructor
-		 * parameter.
-		 * 
-		 * @return
-		 */
-		public String getFieldName() {
-			return property.getFieldName();
-		}
-
-		/**
-		 * Returns the type of the property backing the {@link Parameter}.
-		 * 
-		 * @return
-		 */
-		public TypeInformation<?> getPropertyTypeInformation() {
-			return property.getTypeInformation();
-		}
-
-		/**
-		 * Returns whether the given {@link PersistentProperty} is mapped by the parameter.
-		 * 
-		 * @param property
-		 * @return
-		 */
-		public boolean maps(PersistentProperty<?> property) {
-			return this.property.equals(property);
-		}
-	}
-}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/MappingMongoConverter.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/MappingMongoConverter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 by the original author(s).
+ * Copyright 2011-2013 by the original author(s).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -15,25 +15,25 @@
 */
 package org.springframework.data.mongodb.core.convert;

-import java.lang.reflect.Array;
-import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;

-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.BeansException;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationContextAware;
-import org.springframework.context.expression.BeanFactoryResolver;
 import org.springframework.core.CollectionFactory;
 import org.springframework.core.convert.ConversionException;
+import org.springframework.core.convert.ConversionService;
 import org.springframework.core.convert.support.ConversionServiceFactory;
+import org.springframework.data.convert.EntityInstantiator;
 import org.springframework.data.convert.TypeMapper;
 import org.springframework.data.mapping.Association;
 import org.springframework.data.mapping.AssociationHandler;
@@ -41,18 +41,20 @@ import org.springframework.data.mapping.PreferredConstructor.Parameter;
 import org.springframework.data.mapping.PropertyHandler;
 import org.springframework.data.mapping.context.MappingContext;
 import org.springframework.data.mapping.model.BeanWrapper;
+import org.springframework.data.mapping.model.DefaultSpELExpressionEvaluator;
 import org.springframework.data.mapping.model.MappingException;
 import org.springframework.data.mapping.model.ParameterValueProvider;
-import org.springframework.data.mapping.model.SpELAwareParameterValueProvider;
+import org.springframework.data.mapping.model.PersistentEntityParameterValueProvider;
+import org.springframework.data.mapping.model.PropertyValueProvider;
+import org.springframework.data.mapping.model.SpELContext;
+import org.springframework.data.mapping.model.SpELExpressionEvaluator;
+import org.springframework.data.mapping.model.SpELExpressionParameterValueProvider;
 import org.springframework.data.mongodb.MongoDbFactory;
-import org.springframework.data.mongodb.core.QueryMapper;
 import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
 import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
 import org.springframework.data.util.ClassTypeInformation;
 import org.springframework.data.util.TypeInformation;
-import org.springframework.expression.Expression;
 import org.springframework.expression.spel.standard.SpelExpressionParser;
-import org.springframework.expression.spel.support.StandardEvaluationContext;
 import org.springframework.util.Assert;
 import org.springframework.util.CollectionUtils;
 import org.springframework.util.StringUtils;
@@ -72,7 +74,7 @@ import com.mongodb.DBRef;
 */
 public class MappingMongoConverter extends AbstractMongoConverter implements ApplicationContextAware {

-	protected static final Log log = LogFactory.getLog(MappingMongoConverter.class);
+	protected static final Logger log = LoggerFactory.getLogger(MappingMongoConverter.class);

 	protected final MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext;
 	protected final SpelExpressionParser spelExpressionParser = new SpelExpressionParser();
@@ -83,6 +85,8 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 	protected MongoTypeMapper typeMapper;
 	protected String mapKeyDotReplacement = null;

+	private SpELContext spELContext;
+
 	/**
 	 * Creates a new {@link MappingMongoConverter} given the new {@link MongoDbFactory} and {@link MappingContext}.
 	 * 
@@ -102,6 +106,8 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		this.mappingContext = mappingContext;
 		this.typeMapper = new DefaultMongoTypeMapper(DefaultMongoTypeMapper.DEFAULT_TYPE_KEY, mappingContext);
 		this.idMapper = new QueryMapper(this);
+
+		this.spELContext = new SpELContext(DBObjectPropertyAccessor.INSTANCE);
 	}

 	/**
@@ -153,7 +159,9 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 	 * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context.ApplicationContext)
 	 */
 	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+
 		this.applicationContext = applicationContext;
+		this.spELContext = new SpELContext(this.spELContext, applicationContext);
 	}

 	/*
@@ -164,8 +172,12 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		return read(ClassTypeInformation.from(clazz), dbo);
 	}

-	@SuppressWarnings("unchecked")
 	protected <S extends Object> S read(TypeInformation<S> type, DBObject dbo) {
+		return read(type, dbo, null);
+	}
+
+	@SuppressWarnings("unchecked")
+	protected <S extends Object> S read(TypeInformation<S> type, DBObject dbo, Object parent) {

 		if (null == dbo) {
 			return null;
@@ -183,11 +195,11 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		}

 		if (typeToUse.isCollectionLike() && dbo instanceof BasicDBList) {
-			return (S) readCollectionOrArray(typeToUse, (BasicDBList) dbo);
+			return (S) readCollectionOrArray(typeToUse, (BasicDBList) dbo, parent);
 		}

 		if (typeToUse.isMap()) {
-			return (S) readMap(typeToUse, dbo);
+			return (S) readMap(typeToUse, dbo, parent);
 		}

 		// Retrieve persistent entity info
@@ -197,37 +209,40 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 			throw new MappingException("No mapping metadata found for " + rawType.getName());
 		}

-		return read(persistentEntity, dbo);
+		return read(persistentEntity, dbo, parent);
 	}

-	private <S extends Object> S read(final MongoPersistentEntity<S> entity, final DBObject dbo) {
+	private ParameterValueProvider<MongoPersistentProperty> getParameterProvider(MongoPersistentEntity<?> entity,
+			DBObject source, DefaultSpELExpressionEvaluator evaluator, Object parent) {

-		final StandardEvaluationContext spelCtx = new StandardEvaluationContext(dbo);
-		spelCtx.addPropertyAccessor(DBObjectPropertyAccessor.INSTANCE);
+		MongoDbPropertyValueProvider provider = new MongoDbPropertyValueProvider(source, evaluator, parent);
+		PersistentEntityParameterValueProvider<MongoPersistentProperty> parameterProvider = new PersistentEntityParameterValueProvider<MongoPersistentProperty>(
+				entity, provider, parent);

-		if (applicationContext != null) {
-			spelCtx.setBeanResolver(new BeanFactoryResolver(applicationContext));
-		}
+		return new ConverterAwareSpELExpressionParameterValueProvider(evaluator, conversionService, parameterProvider,
+				parent);
+	}

-		final MappedConstructor constructor = new MappedConstructor(entity, mappingContext);
+	private <S extends Object> S read(final MongoPersistentEntity<S> entity, final DBObject dbo, Object parent) {

-		SpELAwareParameterValueProvider delegate = new SpELAwareParameterValueProvider(spelExpressionParser, spelCtx);
-		ParameterValueProvider provider = new DelegatingParameterValueProvider(constructor, dbo, delegate);
+		final DefaultSpELExpressionEvaluator evaluator = new DefaultSpELExpressionEvaluator(dbo, spELContext);

-		final BeanWrapper<MongoPersistentEntity<S>, S> wrapper = BeanWrapper.create(entity, provider, conversionService);
+		ParameterValueProvider<MongoPersistentProperty> provider = getParameterProvider(entity, dbo, evaluator, parent);
+		EntityInstantiator instantiator = instantiators.getInstantiatorFor(entity);
+		S instance = instantiator.createInstance(entity, provider);
+
+		final BeanWrapper<MongoPersistentEntity<S>, S> wrapper = BeanWrapper.create(instance, conversionService);
+		final S result = wrapper.getBean();

 		// Set properties not already set in the constructor
 		entity.doWithProperties(new PropertyHandler<MongoPersistentProperty>() {
 			public void doWithPersistentProperty(MongoPersistentProperty prop) {

-				boolean isConstructorProperty = constructor.isConstructorParameter(prop);
-				boolean hasValueForProperty = dbo.containsField(prop.getFieldName());
-
-				if (!hasValueForProperty || isConstructorProperty) {
+				if (!dbo.containsField(prop.getFieldName()) || entity.isConstructorArgument(prop)) {
 					return;
 				}

-				Object obj = getValueInternal(prop, dbo, spelCtx, prop.getSpelExpression());
+				Object obj = getValueInternal(prop, dbo, evaluator, result);
 				wrapper.setProperty(prop, obj, useFieldAccessOnly);
 			}
 		});
@@ -236,18 +251,30 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		entity.doWithAssociations(new AssociationHandler<MongoPersistentProperty>() {
 			public void doWithAssociation(Association<MongoPersistentProperty> association) {
 				MongoPersistentProperty inverseProp = association.getInverse();
-				Object obj = getValueInternal(inverseProp, dbo, spelCtx, inverseProp.getSpelExpression());
-				try {
-					wrapper.setProperty(inverseProp, obj);
-				} catch (IllegalAccessException e) {
-					throw new MappingException(e.getMessage(), e);
-				} catch (InvocationTargetException e) {
-					throw new MappingException(e.getMessage(), e);
-				}
+				Object obj = getValueInternal(inverseProp, dbo, evaluator, result);
+
+				wrapper.setProperty(inverseProp, obj);
+
 			}
 		});

-		return wrapper.getBean();
+		return result;
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.convert.MongoWriter#toDBRef(java.lang.Object, org.springframework.data.mongodb.core.mapping.MongoPersistentProperty)
+	 */
+	public DBRef toDBRef(Object object, MongoPersistentProperty referingProperty) {
+
+		org.springframework.data.mongodb.core.mapping.DBRef annotation = null;
+
+		if (referingProperty != null) {
+			annotation = referingProperty.getDBRef();
+			Assert.isTrue(annotation != null, "The referenced property has to be mapped with @DBRef!");
+		}
+
+		return createDBRef(object, annotation);
 	}

 	/**
@@ -319,13 +346,14 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		}

 		final BeanWrapper<MongoPersistentEntity<Object>, Object> wrapper = BeanWrapper.create(obj, conversionService);
-
-		// Write the ID
 		final MongoPersistentProperty idProperty = entity.getIdProperty();
+
 		if (!dbo.containsField("_id") && null != idProperty) {

+			boolean fieldAccessOnly = idProperty.usePropertyAccess() ? false : useFieldAccessOnly;
+
 			try {
-				Object id = wrapper.getProperty(idProperty, Object.class, useFieldAccessOnly);
+				Object id = wrapper.getProperty(idProperty, Object.class, fieldAccessOnly);
 				dbo.put("_id", idMapper.convertId(id));
 			} catch (ConversionException ignored) {
 			}
@@ -339,7 +367,9 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 					return;
 				}

-				Object propertyObj = wrapper.getProperty(prop, prop.getType(), useFieldAccessOnly);
+				boolean fieldAccessOnly = prop.usePropertyAccess() ? false : useFieldAccessOnly;
+
+				Object propertyObj = wrapper.getProperty(prop, prop.getType(), fieldAccessOnly);

 				if (null != propertyObj) {
 					if (!conversions.isSimpleType(propertyObj.getClass())) {
@@ -642,12 +672,24 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App

 	protected DBRef createDBRef(Object target, org.springframework.data.mongodb.core.mapping.DBRef dbref) {

+		Assert.notNull(target);
+
+		if (target instanceof DBRef) {
+			return (DBRef) target;
+		}
+
 		MongoPersistentEntity<?> targetEntity = mappingContext.getPersistentEntity(target.getClass());
-		if (null == targetEntity || null == targetEntity.getIdProperty()) {
-			return null;
+
+		if (null == targetEntity) {
+			throw new MappingException("No mapping metadata found for " + target.getClass());
 		}

 		MongoPersistentProperty idProperty = targetEntity.getIdProperty();
+
+		if (idProperty == null) {
+			throw new MappingException("No id property found on class " + targetEntity.getType());
+		}
+
 		BeanWrapper<MongoPersistentEntity<Object>, Object> wrapper = BeanWrapper.create(target, conversionService);
 		Object id = wrapper.getProperty(idProperty, Object.class, useFieldAccessOnly);

@@ -655,69 +697,17 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 			throw new MappingException("Cannot create a reference to an object with a NULL id.");
 		}

-		String collection = dbref.collection();
-		if ("".equals(collection)) {
-			collection = targetEntity.getCollection();
-		}
+		DB db = mongoDbFactory.getDb();
+		db = dbref != null && StringUtils.hasText(dbref.db()) ? mongoDbFactory.getDb(dbref.db()) : db;

-		String dbname = dbref.db();
-		DB db = StringUtils.hasText(dbname) ? mongoDbFactory.getDb(dbname) : mongoDbFactory.getDb();
-
-		return new DBRef(db, collection, idMapper.convertId(id));
+		return new DBRef(db, targetEntity.getCollection(), idMapper.convertId(id));
 	}

-	@SuppressWarnings("unchecked")
-	protected Object getValueInternal(MongoPersistentProperty prop, DBObject dbo, StandardEvaluationContext ctx,
-			String spelExpr) {
+	protected Object getValueInternal(MongoPersistentProperty prop, DBObject dbo, SpELExpressionEvaluator eval,
+			Object parent) {

-		Object o;
-		if (null != spelExpr) {
-			Expression x = spelExpressionParser.parseExpression(spelExpr);
-			o = x.getValue(ctx);
-		} else {
-
-			Object sourceValue = dbo.get(prop.getFieldName());
-
-			if (sourceValue == null) {
-				return null;
-			}
-
-			Class<?> propertyType = prop.getType();
-
-			if (conversions.hasCustomReadTarget(sourceValue.getClass(), propertyType)) {
-				return conversionService.convert(sourceValue, propertyType);
-			}
-
-			if (sourceValue instanceof DBRef) {
-				sourceValue = ((DBRef) sourceValue).fetch();
-			}
-			if (sourceValue instanceof DBObject) {
-				if (prop.isMap()) {
-					return readMap(prop.getTypeInformation(), (DBObject) sourceValue);
-				} else if (prop.isArray() && sourceValue instanceof BasicDBObject
-						&& ((DBObject) sourceValue).keySet().size() == 0) {
-					// It's empty
-					return Array.newInstance(prop.getComponentType(), 0);
-				} else if (prop.isCollectionLike() && sourceValue instanceof BasicDBList) {
-					return readCollectionOrArray((TypeInformation<? extends Collection<?>>) prop.getTypeInformation(),
-							(BasicDBList) sourceValue);
-				}
-
-				TypeInformation<?> toType = typeMapper.readType((DBObject) sourceValue, prop.getTypeInformation());
-
-				// It's a complex object, have to read it in
-				if (toType != null) {
-					// TODO: why do we remove the type?
-					// dbo.removeField(CUSTOM_TYPE_KEY);
-					o = read(toType, (DBObject) sourceValue);
-				} else {
-					o = read(mappingContext.getPersistentEntity(prop.getTypeInformation()), (DBObject) sourceValue);
-				}
-			} else {
-				o = sourceValue;
-			}
-		}
-		return o;
+		MongoDbPropertyValueProvider provider = new MongoDbPropertyValueProvider(dbo, spELContext, parent);
+		return provider.getPropertyValue(prop);
 	}

 	/**
@@ -725,32 +715,41 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 	 * 
 	 * @param targetType must not be {@literal null}.
 	 * @param sourceValue must not be {@literal null}.
-	 * @return the converted {@link Collections}, will never be {@literal null}.
+	 * @return the converted {@link Collection} or array, will never be {@literal null}.
 	 */
 	@SuppressWarnings("unchecked")
-	private Collection<?> readCollectionOrArray(TypeInformation<?> targetType, BasicDBList sourceValue) {
+	private Object readCollectionOrArray(TypeInformation<?> targetType, BasicDBList sourceValue, Object parent) {

 		Assert.notNull(targetType);

 		Class<?> collectionType = targetType.getType();
+
+		if (sourceValue.isEmpty()) {
+			return getPotentiallyConvertedSimpleRead(new HashSet<Object>(), collectionType);
+		}
+
 		collectionType = Collection.class.isAssignableFrom(collectionType) ? collectionType : List.class;

 		Collection<Object> items = targetType.getType().isArray() ? new ArrayList<Object>() : CollectionFactory
 				.createCollection(collectionType, sourceValue.size());
+		TypeInformation<?> componentType = targetType.getComponentType();
+		Class<?> rawComponentType = componentType == null ? null : componentType.getType();

 		for (int i = 0; i < sourceValue.size(); i++) {
+
 			Object dbObjItem = sourceValue.get(i);
+
 			if (dbObjItem instanceof DBRef) {
-				items.add(read(targetType.getComponentType(), ((DBRef) dbObjItem).fetch()));
+				items.add(DBRef.class.equals(rawComponentType) ? dbObjItem : read(componentType, ((DBRef) dbObjItem).fetch(),
+						parent));
 			} else if (dbObjItem instanceof DBObject) {
-				items.add(read(targetType.getComponentType(), (DBObject) dbObjItem));
+				items.add(read(componentType, (DBObject) dbObjItem, parent));
 			} else {
-				TypeInformation<?> componentType = targetType.getComponentType();
-				items.add(getPotentiallyConvertedSimpleRead(dbObjItem, componentType == null ? null : componentType.getType()));
+				items.add(getPotentiallyConvertedSimpleRead(dbObjItem, rawComponentType));
 			}
 		}

-		return items;
+		return getPotentiallyConvertedSimpleRead(items, targetType.getType());
 	}

 	/**
@@ -761,7 +760,7 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 	 * @return
 	 */
 	@SuppressWarnings("unchecked")
-	protected Map<Object, Object> readMap(TypeInformation<?> type, DBObject dbObject) {
+	protected Map<Object, Object> readMap(TypeInformation<?> type, DBObject dbObject, Object parent) {

 		Assert.notNull(dbObject);

@@ -784,9 +783,12 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App

 			Object value = entry.getValue();
 			TypeInformation<?> valueType = type.getMapValueType();
+			Class<?> rawValueType = valueType == null ? null : valueType.getType();

 			if (value instanceof DBObject) {
-				map.put(key, read(valueType, (DBObject) value));
+				map.put(key, read(valueType, (DBObject) value, parent));
+			} else if (value instanceof DBRef) {
+				map.put(key, DBRef.class.equals(rawValueType) ? value : read(valueType, ((DBRef) value).fetch()));
 			} else {
 				Class<?> valueClass = valueType == null ? null : valueType.getType();
 				map.put(key, getPotentiallyConvertedSimpleRead(value, valueClass));
@@ -811,8 +813,12 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		return rootList;
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.convert.MongoWriter#convertToMongoType(java.lang.Object, org.springframework.data.util.TypeInformation)
+	 */
 	@SuppressWarnings("unchecked")
-	public Object convertToMongoType(Object obj) {
+	public Object convertToMongoType(Object obj, TypeInformation<?> typeInformation) {

 		if (obj == null) {
 			return null;
@@ -823,7 +829,7 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 			return conversionService.convert(obj, target);
 		}

-		if (null != obj && conversions.isSimpleType(obj.getClass())) {
+		if (conversions.isSimpleType(obj.getClass())) {
 			// Doesn't need conversion
 			return getPotentiallyConvertedSimpleWrite(obj);
 		}
@@ -859,7 +865,12 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App

 		DBObject newDbo = new BasicDBObject();
 		this.write(obj, newDbo);
-		return removeTypeInfoRecursively(newDbo);
+
+		if (typeInformation == null) {
+			return removeTypeInfoRecursively(newDbo);
+		}
+
+		return !obj.getClass().equals(typeInformation.getType()) ? newDbo : removeTypeInfoRecursively(newDbo);
 	}

 	public BasicDBList maybeConvertList(Iterable<?> source) {
@@ -907,54 +918,93 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		return dbObject;
 	}

-	private class DelegatingParameterValueProvider implements ParameterValueProvider {
+	private class MongoDbPropertyValueProvider implements PropertyValueProvider<MongoPersistentProperty> {

 		private final DBObject source;
-		private final ParameterValueProvider delegate;
-		private final MappedConstructor constructor;
+		private final SpELExpressionEvaluator evaluator;
+		private final Object parent;

-		/**
-		 * {@link ParameterValueProvider} to delegate source object lookup to a {@link SpELAwareParameterValueProvider} in
-		 * case a MappCon
-		 * 
-		 * @param constructor must not be {@literal null}.
-		 * @param source must not be {@literal null}.
-		 * @param delegate must not be {@literal null}.
-		 */
-		public DelegatingParameterValueProvider(MappedConstructor constructor, DBObject source,
-				SpELAwareParameterValueProvider delegate) {
+		public MongoDbPropertyValueProvider(DBObject source, SpELContext factory, Object parent) {
+			this(source, new DefaultSpELExpressionEvaluator(source, factory), parent);
+		}
+
+		public MongoDbPropertyValueProvider(DBObject source, DefaultSpELExpressionEvaluator evaluator, Object parent) {

-			Assert.notNull(constructor);
 			Assert.notNull(source);
-			Assert.notNull(delegate);
+			Assert.notNull(evaluator);

-			this.constructor = constructor;
 			this.source = source;
-			this.delegate = delegate;
+			this.evaluator = evaluator;
+			this.parent = parent;
 		}

 		/* 
 		 * (non-Javadoc)
-		 * @see org.springframework.data.mapping.model.ParameterValueProvider#getParameterValue(org.springframework.data.mapping.PreferredConstructor.Parameter)
+		 * @see org.springframework.data.convert.PropertyValueProvider#getPropertyValue(org.springframework.data.mapping.PersistentProperty)
 		 */
-		@SuppressWarnings("unchecked")
-		public <T> T getParameterValue(Parameter<T> parameter) {
+		public <T> T getPropertyValue(MongoPersistentProperty property) {

-			MappedConstructor.MappedParameter mappedParameter = constructor.getFor(parameter);
-			Object value = mappedParameter.hasSpELExpression() ? delegate.getParameterValue(parameter) : source
-					.get(mappedParameter.getFieldName());
+			String expression = property.getSpelExpression();
+			Object value = expression != null ? evaluator.evaluate(expression) : source.get(property.getFieldName());

-			TypeInformation<?> type = mappedParameter.getPropertyTypeInformation();
-
-			if (value instanceof DBRef) {
-				return (T) read(type, ((DBRef) value).fetch());
-			} else if (value instanceof BasicDBList) {
-				return (T) getPotentiallyConvertedSimpleRead(readCollectionOrArray(type, (BasicDBList) value), type.getType());
-			} else if (value instanceof DBObject) {
-				return (T) read(type, (DBObject) value);
-			} else {
-				return (T) getPotentiallyConvertedSimpleRead(value, type.getType());
+			if (value == null) {
+				return null;
 			}
+
+			return readValue(value, property.getTypeInformation(), parent);
+		}
+	}
+
+	/**
+	 * Extension of {@link SpELExpressionParameterValueProvider} to recursively trigger value conversion on the raw
+	 * resolved SpEL value.
+	 * 
+	 * @author Oliver Gierke
+	 */
+	private class ConverterAwareSpELExpressionParameterValueProvider extends
+			SpELExpressionParameterValueProvider<MongoPersistentProperty> {
+
+		private final Object parent;
+
+		/**
+		 * Creates a new {@link ConverterAwareSpELExpressionParameterValueProvider}.
+		 * 
+		 * @param evaluator must not be {@literal null}.
+		 * @param conversionService must not be {@literal null}.
+		 * @param delegate must not be {@literal null}.
+		 */
+		public ConverterAwareSpELExpressionParameterValueProvider(SpELExpressionEvaluator evaluator,
+				ConversionService conversionService, ParameterValueProvider<MongoPersistentProperty> delegate, Object parent) {
+
+			super(evaluator, conversionService, delegate);
+			this.parent = parent;
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mapping.model.SpELExpressionParameterValueProvider#potentiallyConvertSpelValue(java.lang.Object, org.springframework.data.mapping.PreferredConstructor.Parameter)
+		 */
+		@Override
+		protected <T> T potentiallyConvertSpelValue(Object object, Parameter<T, MongoPersistentProperty> parameter) {
+			return readValue(object, parameter.getType(), parent);
+		}
+	}
+
+	@SuppressWarnings("unchecked")
+	private <T> T readValue(Object value, TypeInformation<?> type, Object parent) {
+
+		Class<?> rawType = type.getType();
+
+		if (conversions.hasCustomReadTarget(value.getClass(), rawType)) {
+			return (T) conversionService.convert(value, rawType);
+		} else if (value instanceof DBRef) {
+			return (T) (rawType.equals(DBRef.class) ? value : read(type, ((DBRef) value).fetch(), parent));
+		} else if (value instanceof BasicDBList) {
+			return (T) readCollectionOrArray(type, (BasicDBList) value, parent);
+		} else if (value instanceof DBObject) {
+			return (T) read(type, (DBObject) value, parent);
+		} else {
+			return (T) getPotentiallyConvertedSimpleRead(value, rawType);
 		}
 	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/MongoWriter.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/MongoWriter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2011 the original author or authors.
+ * Copyright 2010-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -16,8 +16,11 @@
 package org.springframework.data.mongodb.core.convert;

 import org.springframework.data.convert.EntityWriter;
+import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
+import org.springframework.data.util.TypeInformation;

 import com.mongodb.DBObject;
+import com.mongodb.DBRef;

 /**
 * A MongoWriter is responsible for converting an object of type T to the native MongoDB representation DBObject.
@@ -33,8 +36,28 @@ public interface MongoWriter<T> extends EntityWriter<T, DBObject> {
 	 * Converts the given object into one Mongo will be able to store natively. If the given object can already be stored
 	 * as is, no conversion will happen.
 	 * 
-	 * @param obj
+	 * @param obj can be {@literal null}.
 	 * @return
 	 */
 	Object convertToMongoType(Object obj);
+
+	/**
+	 * Converts the given object into one Mongo will be able to store natively but retains the type information in case
+	 * the given {@link TypeInformation} differs from the given object type.
+	 * 
+	 * @param obj can be {@literal null}.
+	 * @param typeInformation can be {@literal null}.
+	 * @return
+	 */
+	Object convertToMongoType(Object obj, TypeInformation<?> typeInformation);
+
+	/**
+	 * Creates a {@link DBRef} to refer to the given object.
+	 * 
+	 * @param object the object to create a {@link DBRef} to link to. The object's type has to carry an id attribute.
+	 * @param referingProperty the client-side property referring to the object which might carry additional metadata for
+	 *          the {@link DBRef} object to create. Can be {@literal null}.
+	 * @return will never be {@literal null}.
+	 */
+	DBRef toDBRef(Object object, MongoPersistentProperty referingProperty);
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/QueryMapper.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/QueryMapper.java
@@ -0,0 +1,510 @@
+/*
+ * Copyright 2011-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.core.convert;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Set;
+
+import org.bson.types.ObjectId;
+import org.springframework.core.convert.ConversionException;
+import org.springframework.core.convert.ConversionService;
+import org.springframework.data.mapping.PersistentEntity;
+import org.springframework.data.mapping.PropertyPath;
+import org.springframework.data.mapping.PropertyReferenceException;
+import org.springframework.data.mapping.context.MappingContext;
+import org.springframework.data.mapping.context.PersistentPropertyPath;
+import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
+import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
+import org.springframework.util.Assert;
+
+import com.mongodb.BasicDBList;
+import com.mongodb.BasicDBObject;
+import com.mongodb.DBObject;
+import com.mongodb.DBRef;
+
+/**
+ * A helper class to encapsulate any modifications of a Query object before it gets submitted to the database.
+ * 
+ * @author Jon Brisbin
+ * @author Oliver Gierke
+ * @author Patryk Wasik
+ */
+public class QueryMapper {
+
+	private static final List<String> DEFAULT_ID_NAMES = Arrays.asList("id", "_id");
+	private static final String N_OR_PATTERN = "\\$.*or";
+
+	private final ConversionService conversionService;
+	private final MongoConverter converter;
+	private final MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext;
+
+	/**
+	 * Creates a new {@link QueryMapper} with the given {@link MongoConverter}.
+	 * 
+	 * @param converter must not be {@literal null}.
+	 */
+	public QueryMapper(MongoConverter converter) {
+
+		Assert.notNull(converter);
+
+		this.conversionService = converter.getConversionService();
+		this.converter = converter;
+		this.mappingContext = converter.getMappingContext();
+	}
+
+	/**
+	 * Replaces the property keys used in the given {@link DBObject} with the appropriate keys by using the
+	 * {@link PersistentEntity} metadata.
+	 * 
+	 * @param query must not be {@literal null}.
+	 * @param entity can be {@literal null}.
+	 * @return
+	 */
+	public DBObject getMappedObject(DBObject query, MongoPersistentEntity<?> entity) {
+
+		if (Keyword.isKeyword(query)) {
+			return getMappedKeyword(new Keyword(query), entity);
+		}
+
+		DBObject result = new BasicDBObject();
+
+		for (String key : query.keySet()) {
+
+			if (Keyword.isKeyword(key)) {
+				result.putAll(getMappedKeyword(new Keyword(query, key), entity));
+				continue;
+			}
+
+			Field field = entity == null ? new Field(key) : new MetadataBackedField(key, entity, mappingContext);
+
+			Object rawValue = query.get(key);
+			String newKey = field.getMappedKey();
+
+			if (Keyword.isKeyword(rawValue) && !field.isIdField()) {
+				Keyword keyword = new Keyword((DBObject) rawValue);
+				result.put(newKey, getMappedKeyword(field, keyword));
+			} else {
+				result.put(newKey, getMappedValue(field, query.get(key)));
+			}
+		}
+
+		return result;
+	}
+
+	/**
+	 * Returns the given {@link DBObject} representing a keyword by mapping the keyword's value.
+	 * 
+	 * @param query the {@link DBObject} representing a keyword (e.g. {@code $ne : … } )
+	 * @param entity
+	 * @return
+	 */
+	private DBObject getMappedKeyword(Keyword query, MongoPersistentEntity<?> entity) {
+
+		// $or/$nor
+		if (query.key.matches(N_OR_PATTERN) || query.value instanceof Iterable) {
+
+			Iterable<?> conditions = (Iterable<?>) query.value;
+			BasicDBList newConditions = new BasicDBList();
+
+			for (Object condition : conditions) {
+				newConditions.add(condition instanceof DBObject ? getMappedObject((DBObject) condition, entity)
+						: convertSimpleOrDBObject(condition, entity));
+			}
+
+			return new BasicDBObject(query.key, newConditions);
+		}
+
+		return new BasicDBObject(query.key, convertSimpleOrDBObject(query.value, entity));
+	}
+
+	/**
+	 * Returns the mapped keyword considered defining a criteria for the given property.
+	 * 
+	 * @param property
+	 * @param keyword
+	 * @return
+	 */
+	private DBObject getMappedKeyword(Field property, Keyword keyword) {
+
+		boolean needsAssociationConversion = property.isAssociation() && !keyword.isExists();
+		Object value = needsAssociationConversion ? convertAssociation(keyword.value, property.getProperty())
+				: getMappedValue(property.with(keyword.key), keyword.value);
+
+		return new BasicDBObject(keyword.key, value);
+	}
+
+	/**
+	 * Returns the mapped value for the given source object assuming it's a value for the given
+	 * {@link MongoPersistentProperty}.
+	 * 
+	 * @param value the source object to be mapped
+	 * @param property the property the value is a value for
+	 * @param newKey the key the value will be bound to eventually
+	 * @return
+	 */
+	private Object getMappedValue(Field documentField, Object value) {
+
+		if (documentField.isIdField()) {
+
+			if (value instanceof DBObject) {
+				DBObject valueDbo = (DBObject) value;
+				if (valueDbo.containsField("$in") || valueDbo.containsField("$nin")) {
+					String inKey = valueDbo.containsField("$in") ? "$in" : "$nin";
+					List<Object> ids = new ArrayList<Object>();
+					for (Object id : (Iterable<?>) valueDbo.get(inKey)) {
+						ids.add(convertId(id));
+					}
+					valueDbo.put(inKey, ids.toArray(new Object[ids.size()]));
+				} else if (valueDbo.containsField("$ne")) {
+					valueDbo.put("$ne", convertId(valueDbo.get("$ne")));
+				} else {
+					return getMappedObject((DBObject) value, null);
+				}
+
+				return valueDbo;
+
+			} else {
+				return convertId(value);
+			}
+		}
+
+		if (Keyword.isKeyword(value)) {
+			return getMappedKeyword(new Keyword((DBObject) value), null);
+		}
+
+		if (documentField.isAssociation()) {
+			return convertAssociation(value, documentField.getProperty());
+		}
+
+		return convertSimpleOrDBObject(value, documentField.getPropertyEntity());
+	}
+
+	/**
+	 * Retriggers mapping if the given source is a {@link DBObject} or simply invokes the
+	 * 
+	 * @param source
+	 * @param entity
+	 * @return
+	 */
+	private Object convertSimpleOrDBObject(Object source, MongoPersistentEntity<?> entity) {
+
+		if (source instanceof BasicDBList) {
+			return converter.convertToMongoType(source);
+		}
+
+		if (source instanceof DBObject) {
+			return getMappedObject((DBObject) source, entity);
+		}
+
+		return converter.convertToMongoType(source);
+	}
+
+	/**
+	 * Converts the given source assuming it's actually an association to another object.
+	 * 
+	 * @param source
+	 * @param property
+	 * @return
+	 */
+	private Object convertAssociation(Object source, MongoPersistentProperty property) {
+
+		if (property == null || !property.isAssociation()) {
+			return source;
+		}
+
+		if (source instanceof Iterable) {
+			BasicDBList result = new BasicDBList();
+			for (Object element : (Iterable<?>) source) {
+				result.add(element instanceof DBRef ? element : converter.toDBRef(element, property));
+			}
+			return result;
+		}
+
+		if (property.isMap()) {
+			BasicDBObject result = new BasicDBObject();
+			DBObject dbObject = (DBObject) source;
+			for (String key : dbObject.keySet()) {
+				Object o = dbObject.get(key);
+				result.put(key, o instanceof DBRef ? o : converter.toDBRef(o, property));
+			}
+			return result;
+		}
+
+		return source == null || source instanceof DBRef ? source : converter.toDBRef(source, property);
+	}
+
+	/**
+	 * Converts the given raw id value into either {@link ObjectId} or {@link String}.
+	 * 
+	 * @param id
+	 * @return
+	 */
+	public Object convertId(Object id) {
+
+		try {
+			return conversionService.convert(id, ObjectId.class);
+		} catch (ConversionException e) {
+			// Ignore
+		}
+
+		return converter.convertToMongoType(id);
+	}
+
+	/**
+	 * Value object to capture a query keyword representation.
+	 * 
+	 * @author Oliver Gierke
+	 */
+	private static class Keyword {
+
+		String key;
+		Object value;
+
+		public Keyword(DBObject source, String key) {
+			this.key = key;
+			this.value = source.get(key);
+		}
+
+		public Keyword(DBObject dbObject) {
+
+			Set<String> keys = dbObject.keySet();
+			Assert.isTrue(keys.size() == 1, "Can only use a single value DBObject!");
+
+			this.key = keys.iterator().next();
+			this.value = dbObject.get(key);
+		}
+
+		/**
+		 * Returns whether the current keyword is the {@code $exists} keyword.
+		 * 
+		 * @return
+		 */
+		public boolean isExists() {
+			return "$exists".equalsIgnoreCase(key);
+		}
+
+		/**
+		 * Returns whether the given value actually represents a keyword. If this returns {@literal true} it's safe to call
+		 * the constructor.
+		 * 
+		 * @param value
+		 * @return
+		 */
+		public static boolean isKeyword(Object value) {
+
+			if (value instanceof String) {
+				return ((String) value).startsWith("$");
+			}
+
+			if (!(value instanceof DBObject)) {
+				return false;
+			}
+
+			DBObject dbObject = (DBObject) value;
+			return dbObject.keySet().size() == 1 && dbObject.keySet().iterator().next().startsWith("$");
+		}
+	}
+
+	/**
+	 * Value object to represent a field and its meta-information.
+	 * 
+	 * @author Oliver Gierke
+	 */
+	private static class Field {
+
+		private static final String ID_KEY = "_id";
+
+		protected final String name;
+
+		/**
+		 * Creates a new {@link Field} without meta-information but the given name.
+		 * 
+		 * @param name must not be {@literal null} or empty.
+		 */
+		public Field(String name) {
+
+			Assert.hasText(name, "Name must not be null!");
+			this.name = name;
+		}
+
+		/**
+		 * Returns a new {@link Field} with the given name.
+		 * 
+		 * @param name must not be {@literal null} or empty.
+		 * @return
+		 */
+		public Field with(String name) {
+			return new Field(name);
+		}
+
+		/**
+		 * Returns whether the current field is the id field.
+		 * 
+		 * @return
+		 */
+		public boolean isIdField() {
+			return ID_KEY.equals(name);
+		}
+
+		/**
+		 * Returns the underlying {@link MongoPersistentProperty} backing the field.
+		 * 
+		 * @return
+		 */
+		public MongoPersistentProperty getProperty() {
+			return null;
+		}
+
+		/**
+		 * Returns the {@link MongoPersistentEntity} that field is conatined in.
+		 * 
+		 * @return
+		 */
+		public MongoPersistentEntity<?> getPropertyEntity() {
+			return null;
+		}
+
+		/**
+		 * Returns whether the field represents an association.
+		 * 
+		 * @return
+		 */
+		public boolean isAssociation() {
+			return false;
+		}
+
+		/**
+		 * Returns the key to be used in the mapped document eventually.
+		 * 
+		 * @return
+		 */
+		public String getMappedKey() {
+			return isIdField() ? ID_KEY : name;
+		}
+	}
+
+	/**
+	 * Extension of {@link Field} to be backed with mapping metadata.
+	 * 
+	 * @author Oliver Gierke
+	 */
+	private static class MetadataBackedField extends Field {
+
+		private final MongoPersistentEntity<?> entity;
+		private final MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext;
+		private final MongoPersistentProperty property;
+
+		/**
+		 * Creates a new {@link MetadataBackedField} with the given name, {@link MongoPersistentEntity} and
+		 * {@link MappingContext}.
+		 * 
+		 * @param name must not be {@literal null} or empty.
+		 * @param entity must not be {@literal null}.
+		 * @param context must not be {@literal null}.
+		 */
+		public MetadataBackedField(String name, MongoPersistentEntity<?> entity,
+				MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> context) {
+
+			super(name);
+
+			Assert.notNull(entity, "MongoPersistentEntity must not be null!");
+
+			this.entity = entity;
+			this.mappingContext = context;
+
+			PersistentPropertyPath<MongoPersistentProperty> path = getPath(name);
+			this.property = path == null ? null : path.getLeafProperty();
+		}
+
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.convert.QueryMapper.Field#with(java.lang.String)
+		 */
+		@Override
+		public MetadataBackedField with(String name) {
+			return new MetadataBackedField(name, entity, mappingContext);
+		}
+
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.convert.QueryMapper.Field#isIdKey()
+		 */
+		@Override
+		public boolean isIdField() {
+
+			MongoPersistentProperty idProperty = entity.getIdProperty();
+
+			if (idProperty != null) {
+				return idProperty.getName().equals(name) || idProperty.getFieldName().equals(name);
+			}
+
+			return DEFAULT_ID_NAMES.contains(name);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.convert.QueryMapper.Field#getProperty()
+		 */
+		@Override
+		public MongoPersistentProperty getProperty() {
+			return property;
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.convert.QueryMapper.Field#getEntity()
+		 */
+		@Override
+		public MongoPersistentEntity<?> getPropertyEntity() {
+			MongoPersistentProperty property = getProperty();
+			return property == null ? null : mappingContext.getPersistentEntity(property);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.convert.QueryMapper.Field#isAssociation()
+		 */
+		@Override
+		public boolean isAssociation() {
+
+			MongoPersistentProperty property = getProperty();
+			return property == null ? false : property.isAssociation();
+		}
+
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.convert.QueryMapper.Field#getTargetKey()
+		 */
+		@Override
+		public String getMappedKey() {
+
+			PersistentPropertyPath<MongoPersistentProperty> path = getPath(name);
+			return path == null ? name : path.toDotPath(MongoPersistentProperty.PropertyToFieldNameConverter.INSTANCE);
+		}
+
+		private PersistentPropertyPath<MongoPersistentProperty> getPath(String name) {
+
+			try {
+				PropertyPath path = PropertyPath.from(name, entity.getTypeInformation());
+				return mappingContext.getPersistentPropertyPath(path);
+			} catch (PropertyReferenceException e) {
+				return null;
+			}
+		}
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/package-info.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/package-info.java
@@ -0,0 +1,5 @@
+/**
+ * Spring Data MongoDB specific converter infrastructure.
+ */
+package org.springframework.data.mongodb.core.convert;
+
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/geo/CustomMetric.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/geo/CustomMetric.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2012 the original author or authors.
+ * Copyright 2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -13,28 +13,31 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-package org.springframework.data.mongodb.core.query;
-
-import java.util.ArrayList;
-import java.util.List;
+package org.springframework.data.mongodb.core.geo;

 /**
- * @deprecated use {@link Criteria#orOperator(Criteria...)} instead.
- * @author Thomas Risberg
+ * Value object to create custom {@link Metric}s on the fly.
+ * 
 * @author Oliver Gierke
 */
-@Deprecated
-public class OrQuery extends Query {
+public class CustomMetric implements Metric {

-	public OrQuery(Query... q) {
-		super(getOrCriteria(q));
+	private final double multiplier;
+
+	/**
+	 * Creates a custom {@link Metric} using the given multiplier.
+	 * 
+	 * @param multiplier
+	 */
+	public CustomMetric(double multiplier) {
+		this.multiplier = multiplier;
 	}

-	private static Criteria getOrCriteria(Query[] queries) {
-		List<Criteria> criteriaList = new ArrayList<Criteria>();
-		for (Query q : queries) {
-			criteriaList.addAll(q.getCriteria());
-		}
-		return new Criteria(criteriaList, "$or");
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.geo.Metric#getMultiplier()
+	 */
+	public double getMultiplier() {
+		return multiplier;
 	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/geo/GeoResults.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/geo/GeoResults.java
@@ -131,7 +131,7 @@ public class GeoResults<T> implements Iterable<GeoResult<T>> {
 	private static Distance calculateAverageDistance(List<? extends GeoResult<?>> results, Metric metric) {

 		if (results.isEmpty()) {
-			return new Distance(0, null);
+			return new Distance(0, metric);
 		}

 		double averageDistance = 0;
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/geo/package-info.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/geo/package-info.java
@@ -0,0 +1,5 @@
+/**
+ * Support for MongoDB geo-spatial queries.
+ */
+package org.springframework.data.mongodb.core.geo;
+
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/CompoundIndex.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/CompoundIndex.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -13,9 +13,9 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.core.index;

+import java.lang.annotation.Documented;
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -24,14 +24,29 @@ import java.lang.annotation.Target;
 /**
 * Mark a class to use compound indexes.
 * 
- * @author Jon Brisbin <jbrisbin@vmware.com>
+ * @author Jon Brisbin
+ * @author Oliver Gierke
 */
@Target({ ElementType.TYPE })
+@Documented
@Retention(RetentionPolicy.RUNTIME)
 public @interface CompoundIndex {

+	/**
+	 * The actual index definition in JSON format. The keys of the JSON document are the fields to be indexed, the values
+	 * define the index direction (1 for ascending, -1 for descending).
+	 * 
+	 * @return
+	 */
 	String def();

+	/**
+	 * It does not actually make sense to use that attribute as the direction has to be defined in the {@link #def()}
+	 * attribute actually.
+	 * 
+	 * @return
+	 */
+	@Deprecated
 	IndexDirection direction() default IndexDirection.ASCENDING;

 	boolean unique() default false;
@@ -40,8 +55,18 @@ public @interface CompoundIndex {

 	boolean dropDups() default false;

+	/**
+	 * The name of the index to be created.
+	 * 
+	 * @return
+	 */
 	String name() default "";

+	/**
+	 * The collection the index will be created in. Will default to the collection the annotated domain class will be
+	 * stored in.
+	 * 
+	 * @return
+	 */
 	String collection() default "";
-
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/IndexInfo.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/IndexInfo.java
@@ -15,16 +15,16 @@
 */
 package org.springframework.data.mongodb.core.index;

+import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
-import java.util.Map;

-import org.springframework.data.mongodb.core.query.Order;
+import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;

 public class IndexInfo {

-	private final Map<String, Order> fieldSpec;
 	private final List<IndexField> indexFields;

 	private final String name;
@@ -32,10 +32,8 @@ public class IndexInfo {
 	private final boolean dropDuplicates;
 	private final boolean sparse;

-	public IndexInfo(Map<String, Order> fieldSpec, List<IndexField> indexFields, String name, boolean unique,
-			boolean dropDuplicates, boolean sparse) {
+	public IndexInfo(List<IndexField> indexFields, String name, boolean unique, boolean dropDuplicates, boolean sparse) {

-		this.fieldSpec = fieldSpec;
 		this.indexFields = Collections.unmodifiableList(indexFields);
 		this.name = name;
 		this.unique = unique;
@@ -43,15 +41,6 @@ public class IndexInfo {
 		this.sparse = sparse;
 	}

-	/**
-	 * @deprecated use {@link #getIndexFields()} instead as this {@link Map} does not contain geo indexes.
-	 * @return
-	 */
-	@Deprecated
-	public Map<String, Order> getFieldSpec() {
-		return fieldSpec;
-	}
-
 	/**
 	 * Returns the individual index fields of the index.
 	 * 
@@ -61,6 +50,24 @@ public class IndexInfo {
 		return this.indexFields;
 	}

+	/**
+	 * Returns whether the index is covering exactly the fields given independently of the order.
+	 * 
+	 * @param keys must not be {@literal null}.
+	 * @return
+	 */
+	public boolean isIndexForFields(Collection<String> keys) {
+
+		Assert.notNull(keys);
+		List<String> indexKeys = new ArrayList<String>(indexFields.size());
+
+		for (IndexField field : indexFields) {
+			indexKeys.add(field.getKey());
+		}
+
+		return indexKeys.containsAll(keys);
+	}
+
 	public String getName() {
 		return name;
 	}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/MongoMappingEventPublisher.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/MongoMappingEventPublisher.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -13,37 +13,51 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.core.index;

+import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationEvent;
 import org.springframework.context.ApplicationEventPublisher;
-import org.springframework.data.mapping.event.MappingContextEvent;
+import org.springframework.data.mapping.context.MappingContextEvent;
+import org.springframework.data.mongodb.core.MongoTemplate;
 import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
 import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
+import org.springframework.data.mongodb.core.mapping.event.AfterLoadEvent;
+import org.springframework.data.mongodb.core.mapping.event.AfterSaveEvent;
+import org.springframework.util.Assert;

 /**
- * An implementation of ApplicationEventPublisher that will only fire MappingContextEvents for use by the index creator
- * when MongoTemplate is used 'stand-alone', that is not declared inside a Spring ApplicationContext.
+ * An implementation of ApplicationEventPublisher that will only fire {@link MappingContextEvent}s for use by the index
+ * creator when MongoTemplate is used 'stand-alone', that is not declared inside a Spring {@link ApplicationContext}.
+ * Declare {@link MongoTemplate} inside an {@link ApplicationContext} to enable the publishing of all persistence events
+ * such as {@link AfterLoadEvent}, {@link AfterSaveEvent}, etc.
 * 
- * Declare MongoTemplate inside an ApplicationContext to enable the publishing of all persistence events such as
- * {@link AfterLoadEvent}, {@link AfterSaveEvent}, etc.
- * 
- * @author Jon Brisbin <jbrisbin@vmware.com>
+ * @author Jon Brisbin
+ * @author Oliver Gierke
 */
 public class MongoMappingEventPublisher implements ApplicationEventPublisher {

-	private MongoPersistentEntityIndexCreator indexCreator;
+	private final MongoPersistentEntityIndexCreator indexCreator;

+	/**
+	 * Creates a new {@link MongoMappingEventPublisher} for the given {@link MongoPersistentEntityIndexCreator}.
+	 * 
+	 * @param indexCreator must not be {@literal null}.
+	 */
 	public MongoMappingEventPublisher(MongoPersistentEntityIndexCreator indexCreator) {
+
+		Assert.notNull(indexCreator);
 		this.indexCreator = indexCreator;
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.context.ApplicationEventPublisher#publishEvent(org.springframework.context.ApplicationEvent)
+	 */
 	@SuppressWarnings("unchecked")
 	public void publishEvent(ApplicationEvent event) {
 		if (event instanceof MappingContextEvent) {
-			indexCreator
-					.onApplicationEvent((MappingContextEvent<MongoPersistentEntity<MongoPersistentProperty>, MongoPersistentProperty>) event);
+			indexCreator.onApplicationEvent((MappingContextEvent<MongoPersistentEntity<?>, MongoPersistentProperty>) event);
 		}
 	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/MongoPersistentEntityIndexCreator.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/MongoPersistentEntityIndexCreator.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -13,21 +13,20 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.core.index;

 import java.lang.reflect.Field;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;

-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.context.ApplicationListener;
 import org.springframework.data.mapping.PersistentEntity;
 import org.springframework.data.mapping.PropertyHandler;
-import org.springframework.data.mapping.event.MappingContextEvent;
+import org.springframework.data.mapping.context.MappingContext;
+import org.springframework.data.mapping.context.MappingContextEvent;
 import org.springframework.data.mongodb.MongoDbFactory;
-import org.springframework.data.mongodb.core.mapping.BasicMongoPersistentEntity;
 import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
 import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
 import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
@@ -39,32 +38,35 @@ import com.mongodb.DBObject;
 import com.mongodb.util.JSON;

 /**
- * Component that inspects {@link BasicMongoPersistentEntity} instances contained in the given
- * {@link MongoMappingContext} for indexing metadata and ensures the indexes to be available.
+ * Component that inspects {@link MongoPersistentEntity} instances contained in the given {@link MongoMappingContext}
+ * for indexing metadata and ensures the indexes to be available.
 * 
- * @author Jon Brisbin <jbrisbin@vmware.com>
+ * @author Jon Brisbin
 * @author Oliver Gierke
 */
 public class MongoPersistentEntityIndexCreator implements
-		ApplicationListener<MappingContextEvent<MongoPersistentEntity<MongoPersistentProperty>, MongoPersistentProperty>> {
+		ApplicationListener<MappingContextEvent<MongoPersistentEntity<?>, MongoPersistentProperty>> {

-	private static final Log log = LogFactory.getLog(MongoPersistentEntityIndexCreator.class);
+	private static final Logger log = LoggerFactory.getLogger(MongoPersistentEntityIndexCreator.class);

 	private final Map<Class<?>, Boolean> classesSeen = new ConcurrentHashMap<Class<?>, Boolean>();
 	private final MongoDbFactory mongoDbFactory;
+	private final MongoMappingContext mappingContext;

 	/**
 	 * Creats a new {@link MongoPersistentEntityIndexCreator} for the given {@link MongoMappingContext} and
 	 * {@link MongoDbFactory}.
 	 * 
-	 * @param mappingContext must not be {@@iteral null}
-	 * @param mongoDbFactory must not be {@@iteral null}
+	 * @param mappingContext must not be {@literal null}
+	 * @param mongoDbFactory must not be {@literal null}
 	 */
 	public MongoPersistentEntityIndexCreator(MongoMappingContext mappingContext, MongoDbFactory mongoDbFactory) {

 		Assert.notNull(mongoDbFactory);
 		Assert.notNull(mappingContext);
+
 		this.mongoDbFactory = mongoDbFactory;
+		this.mappingContext = mappingContext;

 		for (MongoPersistentEntity<?> entity : mappingContext.getPersistentEntities()) {
 			checkForIndexes(entity);
@@ -75,8 +77,11 @@ public class MongoPersistentEntityIndexCreator implements
 	 * (non-Javadoc)
 	 * @see org.springframework.context.ApplicationListener#onApplicationEvent(org.springframework.context.ApplicationEvent)
 	 */
-	public void onApplicationEvent(
-			MappingContextEvent<MongoPersistentEntity<MongoPersistentProperty>, MongoPersistentProperty> event) {
+	public void onApplicationEvent(MappingContextEvent<MongoPersistentEntity<?>, MongoPersistentProperty> event) {
+
+		if (!event.wasEmittedBy(mappingContext)) {
+			return;
+		}

 		PersistentEntity<?, ?> entity = event.getPersistentEntity();

@@ -97,12 +102,12 @@ public class MongoPersistentEntityIndexCreator implements
 			if (type.isAnnotationPresent(CompoundIndexes.class)) {
 				CompoundIndexes indexes = type.getAnnotation(CompoundIndexes.class);
 				for (CompoundIndex index : indexes.value()) {
-					String indexColl = index.collection();
-					if ("".equals(indexColl)) {
-						indexColl = entity.getCollection();
-					}
-					ensureIndex(indexColl, index.name(), index.def(), index.direction(), index.unique(), index.dropDups(),
-							index.sparse());
+
+					String indexColl = StringUtils.hasText(index.collection()) ? index.collection() : entity.getCollection();
+					DBObject definition = (DBObject) JSON.parse(index.def());
+
+					ensureIndex(indexColl, index.name(), definition, index.unique(), index.dropDups(), index.sparse());
+
 					if (log.isDebugEnabled()) {
 						log.debug("Created compound index " + index);
 					}
@@ -111,10 +116,14 @@ public class MongoPersistentEntityIndexCreator implements

 			entity.doWithProperties(new PropertyHandler<MongoPersistentProperty>() {
 				public void doWithPersistentProperty(MongoPersistentProperty persistentProperty) {
+
 					Field field = persistentProperty.getField();
+
 					if (field.isAnnotationPresent(Indexed.class)) {
+
 						Indexed index = field.getAnnotation(Indexed.class);
 						String name = index.name();
+
 						if (!StringUtils.hasText(name)) {
 							name = persistentProperty.getFieldName();
 						} else {
@@ -126,11 +135,17 @@ public class MongoPersistentEntityIndexCreator implements
 								}
 							}
 						}
+
 						String collection = StringUtils.hasText(index.collection()) ? index.collection() : entity.getCollection();
-						ensureIndex(collection, name, null, index.direction(), index.unique(), index.dropDups(), index.sparse());
+						int direction = index.direction() == IndexDirection.ASCENDING ? 1 : -1;
+						DBObject definition = new BasicDBObject(persistentProperty.getFieldName(), direction);
+
+						ensureIndex(collection, name, definition, index.unique(), index.dropDups(), index.sparse());
+
 						if (log.isDebugEnabled()) {
 							log.debug("Created property index " + index);
 						}
+
 					} else if (field.isAnnotationPresent(GeoSpatialIndexed.class)) {

 						GeoSpatialIndexed index = field.getAnnotation(GeoSpatialIndexed.class);
@@ -155,21 +170,35 @@ public class MongoPersistentEntityIndexCreator implements
 		}
 	}

-	protected void ensureIndex(String collection, final String name, final String def, final IndexDirection direction,
-			final boolean unique, final boolean dropDups, final boolean sparse) {
-		DBObject defObj;
-		if (null != def) {
-			defObj = (DBObject) JSON.parse(def);
-		} else {
-			defObj = new BasicDBObject();
-			defObj.put(name, (direction == IndexDirection.ASCENDING ? 1 : -1));
-		}
+	/**
+	 * Returns whether the current index creator was registered for the given {@link MappingContext}.
+	 * 
+	 * @param context
+	 * @return
+	 */
+	public boolean isIndexCreatorFor(MappingContext<?, ?> context) {
+		return this.mappingContext.equals(context);
+	}
+
+	/**
+	 * Triggers the actual index creation.
+	 * 
+	 * @param collection the collection to create the index in
+	 * @param name the name of the index about to be created
+	 * @param indexDefinition the index definition
+	 * @param unique whether it shall be a unique index
+	 * @param dropDups whether to drop duplicates
+	 * @param sparse sparse or not
+	 */
+	protected void ensureIndex(String collection, String name, DBObject indexDefinition, boolean unique,
+			boolean dropDups, boolean sparse) {
+
 		DBObject opts = new BasicDBObject();
 		opts.put("name", name);
 		opts.put("dropDups", dropDups);
 		opts.put("sparse", sparse);
 		opts.put("unique", unique);
-		mongoDbFactory.getDb().getCollection(collection).ensureIndex(defObj, opts);
-	}

+		mongoDbFactory.getDb().getCollection(collection).ensureIndex(indexDefinition, opts);
+	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/package-info.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/package-info.java
@@ -0,0 +1,5 @@
+/**
+ * Support for MongoDB document indexing.
+ */
+package org.springframework.data.mongodb.core.index;
+
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/BasicMongoPersistentEntity.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/BasicMongoPersistentEntity.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -13,7 +13,6 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.core.mapping;

 import java.util.Comparator;
@@ -23,7 +22,6 @@ import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationContextAware;
 import org.springframework.context.expression.BeanFactoryAccessor;
 import org.springframework.context.expression.BeanFactoryResolver;
-import org.springframework.data.mapping.PersistentEntity;
 import org.springframework.data.mapping.model.BasicPersistentEntity;
 import org.springframework.data.mongodb.MongoCollectionUtils;
 import org.springframework.data.util.TypeInformation;
@@ -34,10 +32,10 @@ import org.springframework.expression.spel.support.StandardEvaluationContext;
 import org.springframework.util.StringUtils;

 /**
- * Mongo specific {@link PersistentEntity} implementation that adds Mongo specific meta-data such as the collection name
- * and the like.
+ * MongoDB specific {@link MongoPersistentEntity} implementation that adds Mongo specific meta-data such as the
+ * collection name and the like.
 * 
- * @author Jon Brisbin <jbrisbin@vmware.com>
+ * @author Jon Brisbin
 * @author Oliver Gierke
 */
 public class BasicMongoPersistentEntity<T> extends BasicPersistentEntity<T, MongoPersistentProperty> implements
@@ -76,18 +74,17 @@ public class BasicMongoPersistentEntity<T> extends BasicPersistentEntity<T, Mong
 	 * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context.ApplicationContext)
 	 */
 	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+
 		context.addPropertyAccessor(new BeanFactoryAccessor());
 		context.setBeanResolver(new BeanFactoryResolver(applicationContext));
 		context.setRootObject(applicationContext);
 	}

-	/**
-	 * Returns the collection the entity should be stored in.
-	 * 
-	 * @return
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.MongoPersistentEntity#getCollection()
 	 */
 	public String getCollection() {
-
 		Expression expression = parser.parseExpression(collection, ParserContext.TEMPLATE_EXPRESSION);
 		return expression.getValue(context, String.class);
 	}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/BasicMongoPersistentProperty.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/BasicMongoPersistentProperty.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -21,30 +21,34 @@ import java.math.BigInteger;
 import java.util.HashSet;
 import java.util.Set;

-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.bson.types.ObjectId;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.data.mapping.Association;
 import org.springframework.data.mapping.model.AnnotationBasedPersistentProperty;
 import org.springframework.data.mapping.model.SimpleTypeHolder;
+import org.springframework.util.ReflectionUtils;
 import org.springframework.util.StringUtils;

 import com.mongodb.DBObject;

 /**
- * Mongo specific {@link org.springframework.data.mapping.PersistentProperty} implementation.
+ * MongoDB specific {@link org.springframework.data.mapping.MongoPersistentProperty} implementation.
 * 
 * @author Oliver Gierke
+ * @author Patryk Wasik
 */
 public class BasicMongoPersistentProperty extends AnnotationBasedPersistentProperty<MongoPersistentProperty> implements
 		MongoPersistentProperty {

-	private static final Log LOG = LogFactory.getLog(BasicMongoPersistentProperty.class);
+	private static final Logger LOG = LoggerFactory.getLogger(BasicMongoPersistentProperty.class);

 	private static final String ID_FIELD_NAME = "_id";
 	private static final Set<Class<?>> SUPPORTED_ID_TYPES = new HashSet<Class<?>>();
 	private static final Set<String> SUPPORTED_ID_PROPERTY_NAMES = new HashSet<String>();

+	private static final Field CAUSE_FIELD;
+
 	static {
 		SUPPORTED_ID_TYPES.add(ObjectId.class);
 		SUPPORTED_ID_TYPES.add(String.class);
@@ -52,6 +56,8 @@ public class BasicMongoPersistentProperty extends AnnotationBasedPersistentPrope

 		SUPPORTED_ID_PROPERTY_NAMES.add("id");
 		SUPPORTED_ID_PROPERTY_NAMES.add("_id");
+
+		CAUSE_FIELD = ReflectionUtils.findField(Throwable.class, "cause");
 	}

 	/**
@@ -87,6 +93,7 @@ public class BasicMongoPersistentProperty extends AnnotationBasedPersistentPrope
 	 */
 	@Override
 	public boolean isIdProperty() {
+
 		if (super.isIdProperty()) {
 			return true;
 		}
@@ -111,8 +118,9 @@ public class BasicMongoPersistentProperty extends AnnotationBasedPersistentPrope
 		return annotation != null && StringUtils.hasText(annotation.value()) ? annotation.value() : field.getName();
 	}

-	/* (non-Javadoc)
-	 * @see org.springframework.data.mongodb.core.core.mapping.MongoPersistentProperty#getFieldOrder()
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.MongoPersistentProperty#getFieldOrder()
 	 */
 	public int getFieldOrder() {
 		org.springframework.data.mongodb.core.mapping.Field annotation = getField().getAnnotation(
@@ -120,25 +128,36 @@ public class BasicMongoPersistentProperty extends AnnotationBasedPersistentPrope
 		return annotation != null ? annotation.order() : Integer.MAX_VALUE;
 	}

-	/* (non-Javadoc)
-	 * @see org.springframework.data.mapping.AbstractPersistentProperty#createAssociation()
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mapping.model.AbstractPersistentProperty#createAssociation()
 	 */
 	@Override
 	protected Association<MongoPersistentProperty> createAssociation() {
 		return new Association<MongoPersistentProperty>(this, null);
 	}

-	/* (non-Javadoc)
-		 * @see org.springframework.data.mongodb.core.core.mapping.MongoPersistentProperty#isDbReference()
-		 */
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.MongoPersistentProperty#isDbReference()
+	 */
 	public boolean isDbReference() {
 		return getField().isAnnotationPresent(DBRef.class);
 	}

-	/* (non-Javadoc)
-		 * @see org.springframework.data.mongodb.core.core.mapping.MongoPersistentProperty#getDBRef()
-		 */
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.MongoPersistentProperty#getDBRef()
+	 */
 	public DBRef getDBRef() {
 		return getField().getAnnotation(DBRef.class);
 	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.MongoPersistentProperty#usePropertyAccess()
+	 */
+	public boolean usePropertyAccess() {
+		return CAUSE_FIELD.equals(getField());
+	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/CachingMongoPersistentProperty.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/CachingMongoPersistentProperty.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -28,6 +28,7 @@ import org.springframework.data.mapping.model.SimpleTypeHolder;
 public class CachingMongoPersistentProperty extends BasicMongoPersistentProperty {

 	private Boolean isIdProperty;
+	private Boolean isAssociation;
 	private String fieldName;

 	/**
@@ -57,6 +58,18 @@ public class CachingMongoPersistentProperty extends BasicMongoPersistentProperty
 		return this.isIdProperty;
 	}

+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.BasicMongoPersistentProperty#isAssociation()
+	 */
+	@Override
+	public boolean isAssociation() {
+		if (this.isAssociation == null) {
+			this.isAssociation = super.isAssociation();
+		}
+		return this.isAssociation;
+	}
+
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.mongodb.core.mapping.BasicMongoPersistentProperty#getFieldName()
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/DBRef.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/DBRef.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 by the original author(s).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -13,9 +13,9 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.core.mapping;

+import java.lang.annotation.Documented;
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -24,19 +24,21 @@ import java.lang.annotation.Target;
 import org.springframework.data.annotation.Reference;

 /**
- * An annotation that indicates the annotated field is to be stored using a com.mongodb.DBRef
+ * An annotation that indicates the annotated field is to be stored using a {@link com.mongodb.DBRef}.
 * 
- * @author Jon Brisbin <jbrisbin@vmware.com>
+ * @author Jon Brisbin
+ * @authot Oliver Gierke
 */
+@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.FIELD })
@Reference
 public @interface DBRef {

-	String collection() default "";
-
-	String id() default "";
-
+	/**
+	 * The database the referred entity resides in.
+	 * 
+	 * @return
+	 */
 	String db() default "";
-
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/MongoMappingContext.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/MongoMappingContext.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -13,22 +13,26 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.core.mapping;

 import java.beans.PropertyDescriptor;
 import java.lang.reflect.Field;
+import java.util.AbstractMap;

 import org.springframework.beans.BeansException;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationContextAware;
 import org.springframework.data.mapping.context.AbstractMappingContext;
+import org.springframework.data.mapping.context.MappingContext;
 import org.springframework.data.mapping.model.SimpleTypeHolder;
 import org.springframework.data.util.TypeInformation;

 /**
- * @author Jon Brisbin <jbrisbin@vmware.com>
- * @author Oliver Gierke ogierke@vmware.com
+ * Default implementation of a {@link MappingContext} for MongoDB using {@link BasicMongoPersistentEntity} and
+ * {@link BasicMongoPersistentProperty} as primary abstractions.
+ * 
+ * @author Jon Brisbin
+ * @author Oliver Gierke
 */
 public class MongoMappingContext extends AbstractMappingContext<BasicMongoPersistentEntity<?>, MongoPersistentProperty>
 		implements ApplicationContextAware {
@@ -42,6 +46,15 @@ public class MongoMappingContext extends AbstractMappingContext<BasicMongoPersis
 		setSimpleTypeHolder(MongoSimpleTypes.HOLDER);
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mapping.context.AbstractMappingContext#shouldCreatePersistentEntityFor(org.springframework.data.util.TypeInformation)
+	 */
+	@Override
+	protected boolean shouldCreatePersistentEntityFor(TypeInformation<?> type) {
+		return !MongoSimpleTypes.HOLDER.isSimpleType(type.getType()) && !AbstractMap.class.isAssignableFrom(type.getType());
+	}
+
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.mapping.AbstractMappingContext#createPersistentProperty(java.lang.reflect.Field, java.beans.PropertyDescriptor, org.springframework.data.mapping.MutablePersistentEntity, org.springframework.data.mapping.SimpleTypeHolder)
@@ -72,7 +85,10 @@ public class MongoMappingContext extends AbstractMappingContext<BasicMongoPersis
 	 * (non-Javadoc)
 	 * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context.ApplicationContext)
 	 */
+	@Override
 	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+
 		this.context = applicationContext;
+		super.setApplicationContext(applicationContext);
 	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/MongoPersistentEntity.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/MongoPersistentEntity.java
@@ -1,12 +1,33 @@
+/*
+ * Copyright 2011-2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.springframework.data.mongodb.core.mapping;

 import org.springframework.data.mapping.PersistentEntity;

 /**
+ * MongoDB specific {@link PersistentEntity} abstraction.
 * 
 * @author Oliver Gierke
 */
 public interface MongoPersistentEntity<T> extends PersistentEntity<T, MongoPersistentProperty> {

+	/**
+	 * Returns the collection the entity shall be persisted to.
+	 * 
+	 * @return
+	 */
 	String getCollection();
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/MongoPersistentProperty.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/MongoPersistentProperty.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -19,9 +19,10 @@ import org.springframework.core.convert.converter.Converter;
 import org.springframework.data.mapping.PersistentProperty;

 /**
- * Mongo specific {@link org.springframework.data.mapping.PersistentProperty} implementation.
+ * MongoDB specific {@link org.springframework.data.mapping.PersistentProperty} extension.
 * 
 * @author Oliver Gierke
+ * @author Patryk Wasik
 */
 public interface MongoPersistentProperty extends PersistentProperty<MongoPersistentProperty> {

@@ -72,4 +73,12 @@ public interface MongoPersistentProperty extends PersistentProperty<MongoPersist
 			return source.getFieldName();
 		}
 	}
+
+	/**
+	 * Returns whether property access shall be used for reading the property value. This means it will use the getter
+	 * instead of field access.
+	 * 
+	 * @return
+	 */
+	boolean usePropertyAccess();
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/SimpleMongoMappingContext.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/SimpleMongoMappingContext.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2012-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -29,22 +29,25 @@ import org.springframework.data.mongodb.MongoCollectionUtils;
 import org.springframework.data.util.TypeInformation;

 /**
- * 
+ * @deprecated use {@link MongoMappingContext} instead.
 * @author Oliver Gierke
 */
+@Deprecated
 public class SimpleMongoMappingContext extends
 		AbstractMappingContext<SimpleMongoMappingContext.SimpleMongoPersistentEntity<?>, MongoPersistentProperty> {

-	/* (non-Javadoc)
-	 * @see org.springframework.data.mapping.BasicMappingContext#createPersistentEntity(org.springframework.data.util.TypeInformation)
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mapping.context.AbstractMappingContext#createPersistentEntity(org.springframework.data.util.TypeInformation)
 	 */
 	@Override
 	protected <T> SimpleMongoPersistentEntity<T> createPersistentEntity(TypeInformation<T> typeInformation) {
 		return new SimpleMongoPersistentEntity<T>(typeInformation);
 	}

-	/* (non-Javadoc)
-	 * @see org.springframework.data.mapping.BasicMappingContext#createPersistentProperty(java.lang.reflect.Field, java.beans.PropertyDescriptor, org.springframework.data.util.TypeInformation, org.springframework.data.mapping.BasicPersistentEntity)
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mapping.context.AbstractMappingContext#createPersistentProperty(java.lang.reflect.Field, java.beans.PropertyDescriptor, org.springframework.data.mapping.model.MutablePersistentEntity, org.springframework.data.mapping.model.SimpleTypeHolder)
 	 */
 	@Override
 	protected SimplePersistentProperty createPersistentProperty(Field field, PropertyDescriptor descriptor,
@@ -112,6 +115,21 @@ public class SimpleMongoMappingContext extends
 		public DBRef getDBRef() {
 			return null;
 		}
+
+		/* (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.core.mapping.MongoPersistentProperty#isVersion()
+		 */
+		public boolean isVersionProperty() {
+			return false;
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.mapping.MongoPersistentProperty#usePropertyAccess()
+		 */
+		public boolean usePropertyAccess() {
+			return false;
+		}
 	}

 	static class SimpleMongoPersistentEntity<T> extends BasicPersistentEntity<T, MongoPersistentProperty> implements
@@ -130,5 +148,20 @@ public class SimpleMongoMappingContext extends
 		public String getCollection() {
 			return MongoCollectionUtils.getPreferredCollectionName(getType());
 		}
+
+		/* (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.core.mapping.MongoPersistentEntity#getVersionProperty()
+		 */
+		public MongoPersistentProperty getVersionProperty() {
+			return null;
+		}
+
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.mapping.MongoPersistentEntity#hasVersionProperty()
+		 */
+		public boolean hasVersionProperty() {
+			return false;
+		}
 	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/Version.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/Version.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.core.mapping;
+
+import static java.lang.annotation.ElementType.*;
+import static java.lang.annotation.RetentionPolicy.*;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+/**
+ * Demarcates a property to be used as version field to implement optimistic locking on entities.
+ * 
+ * @since 1.4
+ * @author Patryk Wasik
+ * @deprecated use {@link org.springframework.data.annotation.Version} instead.
+ */
+@Deprecated
+@Documented
+@Target({ FIELD })
+@Retention(RUNTIME)
+@org.springframework.data.annotation.Version
+public @interface Version {
+
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/AbstractMongoEventListener.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/AbstractMongoEventListener.java
@@ -15,12 +15,13 @@
 */
 package org.springframework.data.mongodb.core.mapping.event;

-import com.mongodb.DBObject;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.context.ApplicationListener;
 import org.springframework.core.GenericTypeResolver;

+import com.mongodb.DBObject;
+
 /**
 * Base class to implement domain class specific {@link ApplicationListener}s.
 * 
@@ -29,7 +30,7 @@ import org.springframework.core.GenericTypeResolver;
 */
 public abstract class AbstractMongoEventListener<E> implements ApplicationListener<MongoMappingEvent<?>> {

-	protected final Log LOG = LogFactory.getLog(getClass());
+	private static final Logger LOG = LoggerFactory.getLogger(AbstractMongoEventListener.class);
 	private final Class<?> domainClass;

 	/**
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/AuditingEventListener.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/AuditingEventListener.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.core.mapping.event;
+
+import org.springframework.context.ApplicationListener;
+import org.springframework.data.auditing.AuditingHandler;
+import org.springframework.data.auditing.IsNewAwareAuditingHandler;
+import org.springframework.data.mapping.context.MappingContext;
+import org.springframework.util.Assert;
+
+/**
+ * Event listener to populate auditing related fields on an entity about to be saved.
+ * 
+ * @author Oliver Gierke
+ */
+public class AuditingEventListener implements ApplicationListener<BeforeConvertEvent<Object>> {
+
+	private final IsNewAwareAuditingHandler<Object> auditingHandler;
+
+	/**
+	 * Creates a new {@link AuditingEventListener} using the given {@link MappingContext} and {@link AuditingHandler}.
+	 * 
+	 * @param auditingHandler must not be {@literal null}.
+	 */
+	public AuditingEventListener(IsNewAwareAuditingHandler<Object> auditingHandler) {
+
+		Assert.notNull(auditingHandler, "IsNewAwareAuditingHandler must not be null!");
+		this.auditingHandler = auditingHandler;
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.context.ApplicationListener#onApplicationEvent(org.springframework.context.ApplicationEvent)
+	 */
+	public void onApplicationEvent(BeforeConvertEvent<Object> event) {
+
+		Object entity = event.getSource();
+		auditingHandler.markAudited(entity);
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/BeforeConvertEvent.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/BeforeConvertEvent.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -13,15 +13,17 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.core.mapping.event;

 /**
- * @author Jon Brisbin <jbrisbin@vmware.com>
+ * Event being thrown before a domain object is converted to be persisted.
+ * 
+ * @author Jon Brisbin
+ * @author Oliver Gierke
 */
 public class BeforeConvertEvent<T> extends MongoMappingEvent<T> {

-	private static final long serialVersionUID = 1L;
+	private static final long serialVersionUID = 252614269008845243L;

 	public BeforeConvertEvent(T source) {
 		super(source, null);
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/LoggingEventListener.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/LoggingEventListener.java
@@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2011 by the original author(s).
+ * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
@@ -15,22 +15,31 @@
 */
 package org.springframework.data.mongodb.core.mapping.event;

+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import com.mongodb.DBObject;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;

 /**
 * @author Jon Brisbin <jbrisbin@vmware.com>
 */
 public class LoggingEventListener extends AbstractMongoEventListener<Object> {

-	private Log log = LogFactory.getLog(getClass());
+	private static final Logger log = LoggerFactory.getLogger(LoggingEventListener.class);

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.event.AbstractMongoEventListener#onBeforeConvert(java.lang.Object)
+	 */
 	@Override
 	public void onBeforeConvert(Object source) {
 		log.info("onBeforeConvert: " + source);
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.event.AbstractMongoEventListener#onBeforeSave(java.lang.Object, com.mongodb.DBObject)
+	 */
 	@Override
 	public void onBeforeSave(Object source, DBObject dbo) {
 		try {
@@ -39,19 +48,30 @@ public class LoggingEventListener extends AbstractMongoEventListener<Object> {
 		}
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.event.AbstractMongoEventListener#onAfterSave(java.lang.Object, com.mongodb.DBObject)
+	 */
 	@Override
 	public void onAfterSave(Object source, DBObject dbo) {
 		log.info("onAfterSave: " + source + ", " + dbo);
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.event.AbstractMongoEventListener#onAfterLoad(com.mongodb.DBObject)
+	 */
 	@Override
 	public void onAfterLoad(DBObject dbo) {
 		log.info("onAfterLoad: " + dbo);
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.event.AbstractMongoEventListener#onAfterConvert(com.mongodb.DBObject, java.lang.Object)
+	 */
 	@Override
 	public void onAfterConvert(DBObject dbo, Object source) {
 		log.info("onAfterConvert: " + dbo + ", " + source);
 	}
-
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/ValidatingMongoEventListener.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/ValidatingMongoEventListener.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.core.mapping.event;
+
+import java.util.Set;
+
+import javax.validation.ConstraintViolationException;
+import javax.validation.Validator;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.util.Assert;
+
+import com.mongodb.DBObject;
+
+/**
+ * javax.validation dependant entities validator. When it is registered as Spring component its automatically invoked
+ * before entities are saved in database.
+ * 
+ * @author Maciej Walkowiak
+ */
+public class ValidatingMongoEventListener extends AbstractMongoEventListener<Object> {
+
+	private static final Logger LOG = LoggerFactory.getLogger(ValidatingMongoEventListener.class);
+
+	private final Validator validator;
+
+	/**
+	 * Creates a new {@link ValidatingMongoEventListener} using the given {@link Validator}.
+	 * 
+	 * @param validator must not be {@literal null}.
+	 */
+	public ValidatingMongoEventListener(Validator validator) {
+		Assert.notNull(validator);
+		this.validator = validator;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.mapping.event.AbstractMongoEventListener#onBeforeSave(java.lang.Object, com.mongodb.DBObject)
+	 */
+	@Override
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	public void onBeforeSave(Object source, DBObject dbo) {
+
+		LOG.debug("Validating object: {}", source);
+		Set violations = validator.validate(source);
+
+		if (!violations.isEmpty()) {
+
+			LOG.info("During object: {} validation violations found: {}", source, violations);
+			throw new ConstraintViolationException(violations);
+		}
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/package-info.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/event/package-info.java
@@ -0,0 +1,5 @@
+/**
+ * Mapping event callback infrastructure for the MongoDB document-to-object mapping subsystem.
+ */
+package org.springframework.data.mongodb.core.mapping.event;
+
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/package-info.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/package-info.java
@@ -0,0 +1,5 @@
+/**
+ * Infrastructure for the MongoDB document-to-object mapping subsystem.
+ */
+package org.springframework.data.mongodb.core.mapping;
+
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapreduce/MapReduceCounts.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapreduce/MapReduceCounts.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2011 the original author or authors.
+ * Copyright 2010-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -16,30 +16,42 @@
 package org.springframework.data.mongodb.core.mapreduce;

 /**
+ * Value object to encapsulate results of a map-reduce count.
+ * 
 * @author Mark Pollack
+ * @author Oliver Gierke
 */
 public class MapReduceCounts {

-	private final int inputCount;
-	private final int emitCount;
-	private final int outputCount;
+	public static MapReduceCounts NONE = new MapReduceCounts(-1, -1, -1);
+
+	private final long inputCount;
+	private final long emitCount;
+	private final long outputCount;
+
+	/**
+	 * Creates a new {@link MapReduceCounts} using the given input count, emit count, and output count.
+	 * 
+	 * @param inputCount
+	 * @param emitCount
+	 * @param outputCount
+	 */
+	public MapReduceCounts(long inputCount, long emitCount, long outputCount) {

-	public MapReduceCounts(int inputCount, int emitCount, int outputCount) {
-		super();
 		this.inputCount = inputCount;
 		this.emitCount = emitCount;
 		this.outputCount = outputCount;
 	}

-	public int getInputCount() {
+	public long getInputCount() {
 		return inputCount;
 	}

-	public int getEmitCount() {
+	public long getEmitCount() {
 		return emitCount;
 	}

-	public int getOutputCount() {
+	public long getOutputCount() {
 		return outputCount;
 	}

@@ -59,12 +71,15 @@ public class MapReduceCounts {
 	 */
 	@Override
 	public int hashCode() {
+
 		final int prime = 31;
-		int result = 1;
+		long result = 1;
+
 		result = prime * result + emitCount;
 		result = prime * result + inputCount;
 		result = prime * result + outputCount;
-		return result;
+
+		return Long.valueOf(result).intValue();
 	}

 	/*
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapreduce/MapReduceResults.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapreduce/MapReduceResults.java
@@ -118,15 +118,14 @@ public class MapReduceResults<T> implements Iterable<T> {
 		DBObject counts = (DBObject) rawResults.get("counts");

 		if (counts == null) {
-			return new MapReduceCounts(-1, -1, -1);
+			return MapReduceCounts.NONE;
 		}

 		if (counts.get("input") != null && counts.get("emit") != null && counts.get("output") != null) {
-			return new MapReduceCounts((Integer) counts.get("input"), (Integer) counts.get("emit"),
-					(Integer) counts.get("output"));
+			return new MapReduceCounts(getAsLong(counts, "input"), getAsLong(counts, "emit"), getAsLong(counts, "output"));
 		}

-		return new MapReduceCounts(-1, -1, -1);
+		return MapReduceCounts.NONE;
 	}

 	/**
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapreduce/package-info.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapreduce/package-info.java
@@ -0,0 +1,5 @@
+/**
+ * Support for MongoDB map-reduce operations.
+ */
+package org.springframework.data.mongodb.core.mapreduce;
+
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Criteria.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Criteria.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2011 the original author or authors.
+ * Copyright 2010-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -15,6 +15,8 @@
 */
 package org.springframework.data.mongodb.core.query;

+import static org.springframework.util.ObjectUtils.*;
+
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -23,19 +25,24 @@ import java.util.List;
 import java.util.regex.Pattern;

 import org.bson.BSON;
-import org.bson.types.BasicBSONList;
 import org.springframework.data.mongodb.InvalidMongoDbApiUsageException;
 import org.springframework.data.mongodb.core.geo.Circle;
 import org.springframework.data.mongodb.core.geo.Point;
 import org.springframework.data.mongodb.core.geo.Shape;
 import org.springframework.util.Assert;
+import org.springframework.util.ObjectUtils;

+import com.mongodb.BasicDBList;
 import com.mongodb.BasicDBObject;
 import com.mongodb.DBObject;

 /**
 * Central class for creating queries. It follows a fluent API style so that you can easily chain together multiple
 * criteria. Static import of the 'Criteria.where' method will improve readability.
+ * 
+ * @author Thomas Risberg
+ * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public class Criteria implements CriteriaDefinition {

@@ -393,34 +400,54 @@ public class Criteria implements CriteriaDefinition {

 	/**
 	 * Creates an 'or' criteria using the $or operator for all of the provided criteria
+	 * <p>
+	 * Note that mongodb doesn't support an $or operator to be wrapped in a $not operator.
+	 * <p>
 	 * 
+	 * @throws IllegalArgumentException if {@link #orOperator(Criteria...)} follows a not() call directly.
 	 * @param criteria
 	 */
 	public Criteria orOperator(Criteria... criteria) {
-		BasicBSONList bsonList = createCriteriaList(criteria);
-		criteriaChain.add(new Criteria("$or").is(bsonList));
-		return this;
+		BasicDBList bsonList = createCriteriaList(criteria);
+		return registerCriteriaChainElement(new Criteria("$or").is(bsonList));
 	}

 	/**
-	 * Creates a 'nor' criteria using the $nor operator for all of the provided criteria
+	 * Creates a 'nor' criteria using the $nor operator for all of the provided criteria.
+	 * <p>
+	 * Note that mongodb doesn't support an $nor operator to be wrapped in a $not operator.
+	 * <p>
 	 * 
+	 * @throws IllegalArgumentException if {@link #norOperator(Criteria...)} follows a not() call directly.
 	 * @param criteria
 	 */
 	public Criteria norOperator(Criteria... criteria) {
-		BasicBSONList bsonList = createCriteriaList(criteria);
-		criteriaChain.add(new Criteria("$nor").is(bsonList));
-		return this;
+		BasicDBList bsonList = createCriteriaList(criteria);
+		return registerCriteriaChainElement(new Criteria("$nor").is(bsonList));
 	}

 	/**
-	 * Creates an 'and' criteria using the $and operator for all of the provided criteria
+	 * Creates an 'and' criteria using the $and operator for all of the provided criteria.
+	 * <p>
+	 * Note that mongodb doesn't support an $and operator to be wrapped in a $not operator.
+	 * <p>
 	 * 
+	 * @throws IllegalArgumentException if {@link #andOperator(Criteria...)} follows a not() call directly.
 	 * @param criteria
 	 */
 	public Criteria andOperator(Criteria... criteria) {
-		BasicBSONList bsonList = createCriteriaList(criteria);
-		criteriaChain.add(new Criteria("$and").is(bsonList));
+		BasicDBList bsonList = createCriteriaList(criteria);
+		return registerCriteriaChainElement(new Criteria("$and").is(bsonList));
+	}
+
+	private Criteria registerCriteriaChainElement(Criteria criteria) {
+
+		if (lastOperatorWasNot()) {
+			throw new IllegalArgumentException("operator $not is not allowed around criteria chain element: "
+					+ criteria.getCriteriaObject());
+		} else {
+			criteriaChain.add(criteria);
+		}
 		return this;
 	}

@@ -429,11 +456,9 @@ public class Criteria implements CriteriaDefinition {
 	}

 	/*
-		 * (non-Javadoc)
-		 *
-		 * @see org.springframework.datastore.document.mongodb.query.Criteria#
-		 * getCriteriaObject(java.lang.String)
-		 */
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.query.CriteriaDefinition#getCriteriaObject()
+	 */
 	public DBObject getCriteriaObject() {
 		if (this.criteriaChain.size() == 1) {
 			return criteriaChain.get(0).getSingleCriteriaObject();
@@ -467,6 +492,7 @@ public class Criteria implements CriteriaDefinition {
 				}
 			}
 		}
+
 		DBObject queryCriteria = new BasicDBObject();
 		if (isValue != NOT_SET) {
 			queryCriteria.put(this.key, this.isValue);
@@ -477,8 +503,8 @@ public class Criteria implements CriteriaDefinition {
 		return queryCriteria;
 	}

-	private BasicBSONList createCriteriaList(Criteria[] criteria) {
-		BasicBSONList bsonList = new BasicBSONList();
+	private BasicDBList createCriteriaList(Criteria[] criteria) {
+		BasicDBList bsonList = new BasicDBList();
 		for (Criteria c : criteria) {
 			bsonList.add(c.getCriteriaObject());
 		}
@@ -496,4 +522,82 @@ public class Criteria implements CriteriaDefinition {
 		}
 	}

+	/* 
+	 * (non-Javadoc)
+	 * @see java.lang.Object#equals(java.lang.Object)
+	 */
+	@Override
+	public boolean equals(Object obj) {
+
+		if (this == obj) {
+			return true;
+		}
+
+		if (obj == null || !getClass().equals(obj.getClass())) {
+			return false;
+		}
+
+		Criteria that = (Criteria) obj;
+
+		if (this.criteriaChain.size() != that.criteriaChain.size()) {
+			return false;
+		}
+
+		for (int i = 0; i < this.criteriaChain.size(); i++) {
+
+			Criteria left = this.criteriaChain.get(i);
+			Criteria right = that.criteriaChain.get(i);
+
+			if (!simpleCriteriaEquals(left, right)) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	private boolean simpleCriteriaEquals(Criteria left, Criteria right) {
+
+		boolean keyEqual = left.key == null ? right.key == null : left.key.equals(right.key);
+		boolean criteriaEqual = left.criteria.equals(right.criteria);
+		boolean valueEqual = isEqual(left.isValue, right.isValue);
+
+		return keyEqual && criteriaEqual && valueEqual;
+	}
+
+	/**
+	 * Checks the given objects for equality. Handles {@link Pattern} and arrays correctly.
+	 * 
+	 * @param left
+	 * @param right
+	 * @return
+	 */
+	private boolean isEqual(Object left, Object right) {
+
+		if (left == null) {
+			return right == null;
+		}
+
+		if (left instanceof Pattern) {
+			return right instanceof Pattern ? ((Pattern) left).pattern().equals(((Pattern) right).pattern()) : false;
+		}
+
+		return ObjectUtils.nullSafeEquals(left, right);
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see java.lang.Object#hashCode()
+	 */
+	@Override
+	public int hashCode() {
+
+		int result = 17;
+
+		result += nullSafeHashCode(key);
+		result += criteria.hashCode();
+		result += nullSafeHashCode(isValue);
+
+		return result;
+	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Field.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Field.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2011 the original author or authors.
+ * Copyright 2010-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -18,14 +18,15 @@ package org.springframework.data.mongodb.core.query;
 import java.util.HashMap;
 import java.util.Map;

+import org.springframework.util.ObjectUtils;
+
 import com.mongodb.BasicDBObject;
 import com.mongodb.DBObject;

 public class Field {

-	private Map<String, Integer> criteria = new HashMap<String, Integer>();
-
-	private Map<String, Object> slices = new HashMap<String, Object>();
+	private final Map<String, Integer> criteria = new HashMap<String, Integer>();
+	private final Map<String, Object> slices = new HashMap<String, Object>();

 	public Field include(String key) {
 		criteria.put(key, Integer.valueOf(1));
@@ -50,11 +51,54 @@ public class Field {
 	public DBObject getFieldsObject() {
 		DBObject dbo = new BasicDBObject();
 		for (String k : criteria.keySet()) {
-			dbo.put(k, (criteria.get(k)));
+			dbo.put(k, criteria.get(k));
 		}
 		for (String k : slices.keySet()) {
-			dbo.put(k, new BasicDBObject("$slice", (slices.get(k))));
+			dbo.put(k, new BasicDBObject("$slice", slices.get(k)));
 		}
 		return dbo;
 	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see java.lang.Object#equals(java.lang.Object)
+	 */
+	@Override
+	public boolean equals(Object object) {
+
+		if (this == object) {
+			return true;
+		}
+
+		if (!(object instanceof Field)) {
+			return false;
+		}
+
+		Field that = (Field) object;
+
+		if (!this.criteria.equals(that.criteria)) {
+			return false;
+		}
+
+		if (!this.slices.equals(that.slices)) {
+			return false;
+		}
+
+		return true;
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see java.lang.Object#hashCode()
+	 */
+	@Override
+	public int hashCode() {
+
+		int result = 17;
+
+		result += 31 * ObjectUtils.nullSafeHashCode(this.criteria);
+		result += 31 * ObjectUtils.nullSafeHashCode(this.slices);
+
+		return result;
+	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/NearQuery.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/NearQuery.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 the original author or authors.
+ * Copyright 2011-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -15,6 +15,8 @@
 */
 package org.springframework.data.mongodb.core.query;

+import org.springframework.data.domain.Pageable;
+import org.springframework.data.mongodb.core.geo.CustomMetric;
 import org.springframework.data.mongodb.core.geo.Distance;
 import org.springframework.data.mongodb.core.geo.Metric;
 import org.springframework.data.mongodb.core.geo.Metrics;
@@ -28,13 +30,17 @@ import com.mongodb.DBObject;
 * Builder class to build near-queries.
 * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public class NearQuery {

-	private final DBObject criteria;
+	private final Point point;
 	private Query query;
-	private Double maxDistance;
+	private Distance maxDistance;
 	private Metric metric;
+	private boolean spherical;
+	private Integer num;
+	private Integer skip;

 	/**
 	 * Creates a new {@link NearQuery}.
@@ -45,13 +51,11 @@ public class NearQuery {

 		Assert.notNull(point);

-		this.criteria = new BasicDBObject();
-		this.criteria.put("near", point.asList());
+		this.point = point;
+		this.spherical = false;

-		this.metric = metric;
 		if (metric != null) {
-			spherical(true);
-			distanceMultiplier(metric);
+			in(metric);
 		}
 	}

@@ -105,83 +109,135 @@ public class NearQuery {
 	}

 	/**
-	 * Returns the {@link Metric} underlying the actual query.
+	 * Returns the {@link Metric} underlying the actual query. If no metric was set explicitly {@link Metrics#NEUTRAL}
+	 * will be returned.
 	 * 
-	 * @return
+	 * @return will never be {@literal null}.
 	 */
 	public Metric getMetric() {
-		return metric;
+		return metric == null ? Metrics.NEUTRAL : metric;
 	}

 	/**
-	 * Configures the number of results to return.
+	 * Configures the maximum number of results to return.
 	 * 
 	 * @param num
 	 * @return
 	 */
 	public NearQuery num(int num) {
-		this.criteria.put("num", num);
+		this.num = num;
 		return this;
 	}

 	/**
-	 * Sets the max distance results shall have from the configured origin. Will normalize the given value using a
-	 * potentially already configured {@link Metric}.
+	 * Configures the number of results to skip.
+	 * 
+	 * @param skip
+	 * @return
+	 */
+	public NearQuery skip(int skip) {
+		this.skip = skip;
+		return this;
+	}
+
+	/**
+	 * Configures the {@link Pageable} to use.
+	 * 
+	 * @param pageable
+	 * @return
+	 */
+	public NearQuery with(Pageable pageable) {
+		this.num = pageable.getOffset() + pageable.getPageSize();
+		this.skip = pageable.getOffset();
+		return this;
+	}
+
+	/**
+	 * Sets the max distance results shall have from the configured origin. If a {@link Metric} was set before the given
+	 * value will be interpreted as being a value in that metric. E.g.
+	 * 
+	 * <pre>
+	 * NearQuery query = near(10.0, 20.0, Metrics.KILOMETERS).maxDistance(150);
+	 * </pre>
+	 * 
+	 * Will set the maximum distance to 150 kilometers.
 	 * 
 	 * @param maxDistance
 	 * @return
 	 */
 	public NearQuery maxDistance(double maxDistance) {
-		this.maxDistance = getNormalizedDistance(maxDistance, this.metric);
-		return this;
+		return maxDistance(new Distance(maxDistance, getMetric()));
 	}

 	/**
 	 * Sets the maximum distance supplied in a given metric. Will normalize the distance but not reconfigure the query's
-	 * {@link Metric}.
+	 * result {@link Metric} if one was configured before.
 	 * 
 	 * @param maxDistance
 	 * @param metric must not be {@literal null}.
 	 * @return
 	 */
 	public NearQuery maxDistance(double maxDistance, Metric metric) {
+
 		Assert.notNull(metric);
-		this.spherical(true);
-		return maxDistance(getNormalizedDistance(maxDistance, metric));
+		return maxDistance(new Distance(maxDistance, metric));
 	}

 	/**
-	 * Sets the maximum distance to the given {@link Distance}.
+	 * Sets the maximum distance to the given {@link Distance}. Will set the returned {@link Metric} to be the one of the
+	 * given {@link Distance} if no {@link Metric} was set before.
 	 * 
-	 * @param distance
+	 * @param distance must not be {@literal null}.
 	 * @return
 	 */
 	public NearQuery maxDistance(Distance distance) {
+
 		Assert.notNull(distance);
-		return maxDistance(distance.getValue(), distance.getMetric());
+
+		if (distance.getMetric() != Metrics.NEUTRAL) {
+			this.spherical(true);
+		}
+
+		if (this.metric == null) {
+			in(distance.getMetric());
+		}
+
+		this.maxDistance = distance;
+		return this;
 	}

 	/**
-	 * Configures a distance multiplier the resulting distances get applied.
+	 * Returns the maximum {@link Distance}.
+	 * 
+	 * @return
+	 */
+	public Distance getMaxDistance() {
+		return this.maxDistance;
+	}
+
+	/**
+	 * Configures a {@link CustomMetric} with the given multiplier.
 	 * 
 	 * @param distanceMultiplier
 	 * @return
 	 */
 	public NearQuery distanceMultiplier(double distanceMultiplier) {
-		this.criteria.put("distanceMultiplier", distanceMultiplier);
+
+		this.metric = new CustomMetric(distanceMultiplier);
 		return this;
 	}

 	/**
-	 * Configures the distance multiplier to the multiplier of the given {@link Metric}. Does <em>not</em> recalculate the
-	 * {@link #maxDistance(double)}.
+	 * Configures the distance multiplier to the multiplier of the given {@link Metric}.
 	 * 
+	 * @deprecated use {@link #in(Metric)} instead.
 	 * @param metric must not be {@literal null}.
 	 * @return
 	 */
+	@Deprecated
 	public NearQuery distanceMultiplier(Metric metric) {
 		Assert.notNull(metric);
-		return distanceMultiplier(metric.getMultiplier());
+		return in(metric);
 	}

 	/**
@@ -191,10 +247,19 @@ public class NearQuery {
 	 * @return
 	 */
 	public NearQuery spherical(boolean spherical) {
-		this.criteria.put("spherical", spherical);
+		this.spherical = spherical;
 		return this;
 	}

+	/**
+	 * Returns whether spharical values will be returned.
+	 * 
+	 * @return
+	 */
+	public boolean isSpherical() {
+		return this.spherical;
+	}
+
 	/**
 	 * Will cause the results' distances being returned in kilometers. Sets {@link #distanceMultiplier(double)} and
 	 * {@link #spherical(boolean)} accordingly.
@@ -215,6 +280,18 @@ public class NearQuery {
 		return adaptMetric(Metrics.MILES);
 	}

+	/**
+	 * Will cause the results' distances being returned in the given metric. Sets {@link #distanceMultiplier(double)}
+	 * accordingly as well as {@link #spherical(boolean)} if the given {@link Metric} is not {@link Metrics#NEUTRAL}.
+	 * 
+	 * @param metric the metric the results shall be returned in. Uses {@link Metrics#NEUTRAL} if {@literal null} is
+	 *          passed.
+	 * @return
+	 */
+	public NearQuery in(Metric metric) {
+		return adaptMetric(metric == null ? Metrics.NEUTRAL : metric);
+	}
+
 	/**
 	 * Configures the given {@link Metric} to be used as base on for this query and recalculate the maximum distance if no
 	 * metric was set before.
@@ -223,12 +300,12 @@ public class NearQuery {
 	 */
 	private NearQuery adaptMetric(Metric metric) {

-		if (this.metric == null && maxDistance != null) {
-			maxDistance(this.maxDistance, metric);
+		if (metric != Metrics.NEUTRAL) {
+			spherical(true);
 		}

-		spherical(true);
-		return distanceMultiplier(metric);
+		this.metric = metric;
+		return this;
 	}

 	/**
@@ -239,9 +316,18 @@ public class NearQuery {
 	 */
 	public NearQuery query(Query query) {
 		this.query = query;
+		this.skip = query.getSkip();
+		this.num = query.getLimit();
 		return this;
 	}

+	/**
+	 * @return the number of elements to skip.
+	 */
+	public Integer getSkip() {
+		return skip;
+	}
+
 	/**
 	 * Returns the {@link DBObject} built by the {@link NearQuery}.
 	 * 
@@ -249,18 +335,27 @@ public class NearQuery {
 	 */
 	public DBObject toDBObject() {

-		BasicDBObject dbObject = new BasicDBObject(criteria.toMap());
+		BasicDBObject dbObject = new BasicDBObject();
+
 		if (query != null) {
 			dbObject.put("query", query.getQueryObject());
 		}
+
 		if (maxDistance != null) {
-			dbObject.put("maxDistance", maxDistance);
+			dbObject.put("maxDistance", this.maxDistance.getNormalizedValue());
 		}

+		if (metric != null) {
+			dbObject.put("distanceMultiplier", metric.getMultiplier());
+		}
+
+		if (num != null) {
+			dbObject.put("num", num);
+		}
+
+		dbObject.put("near", point.asList());
+		dbObject.put("spherical", spherical);
+
 		return dbObject;
 	}
-
-	private double getNormalizedDistance(double distance, Metric metric) {
-		return metric == null ? distance : distance / metric.getMultiplier();
-	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Query.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Query.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2011 the original author or authors.
+ * Copyright 2010-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -15,44 +15,64 @@
 */
 package org.springframework.data.mongodb.core.query;

-import static org.springframework.data.mongodb.core.SerializationUtils.*;
+import static org.springframework.data.mongodb.core.query.SerializationUtils.*;
+import static org.springframework.util.ObjectUtils.*;

 import java.util.ArrayList;
 import java.util.LinkedHashMap;
 import java.util.List;

+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
 import org.springframework.data.mongodb.InvalidMongoDbApiUsageException;
 import org.springframework.util.Assert;

 import com.mongodb.BasicDBObject;
 import com.mongodb.DBObject;

+/**
+ * @author Thomas Risberg
+ * @author Oliver Gierke
+ */
 public class Query {

 	private LinkedHashMap<String, Criteria> criteria = new LinkedHashMap<String, Criteria>();
 	private Field fieldSpec;
-	private Sort sort;
+	private Sort coreSort;
+	@SuppressWarnings("deprecation")
+	private org.springframework.data.mongodb.core.query.Sort sort;
 	private int skip;
 	private int limit;
 	private String hint;

 	/**
-	 * Static factory method to create a Query using the provided criteria
+	 * Static factory method to create a {@link Query} using the provided {@link Criteria}.
 	 * 
-	 * @param critera
+	 * @param criteria must not be {@literal null}.
 	 * @return
 	 */
-	public static Query query(Criteria critera) {
-		return new Query(critera);
+	public static Query query(Criteria criteria) {
+		return new Query(criteria);
 	}

 	public Query() {
 	}

+	/**
+	 * Creates a new {@link Query} using the given {@link Criteria}.
+	 * 
+	 * @param criteria must not be {@literal null}.
+	 */
 	public Query(Criteria criteria) {
 		addCriteria(criteria);
 	}

+	/**
+	 * Adds the given {@link Criteria} to the current {@link Query}.
+	 * 
+	 * @param criteria must not be {@literal null}.
+	 * @return
+	 */
 	public Query addCriteria(Criteria criteria) {
 		CriteriaDefinition existing = this.criteria.get(criteria.getKey());
 		String key = criteria.getKey();
@@ -95,14 +115,61 @@ public class Query {
 		return this;
 	}

-	public Sort sort() {
+	/**
+	 * Returns a {@link org.springframework.data.mongodb.core.query.Sort} instance to define ordering properties.
+	 * 
+	 * @deprecated use {@link #with(Sort)} instead
+	 * @return
+	 */
+	@Deprecated
+	public org.springframework.data.mongodb.core.query.Sort sort() {
 		if (this.sort == null) {
-			this.sort = new Sort();
+			this.sort = new org.springframework.data.mongodb.core.query.Sort();
 		}

 		return this.sort;
 	}

+	/**
+	 * Sets the given pagination information on the {@link Query} instance. Will transparently set {@code skip} and
+	 * {@code limit} as well as applying the {@link Sort} instance defined with the {@link Pageable}.
+	 * 
+	 * @param pageable
+	 * @return
+	 */
+	public Query with(Pageable pageable) {
+
+		if (pageable == null) {
+			return this;
+		}
+
+		this.limit = pageable.getPageSize();
+		this.skip = pageable.getOffset();
+
+		return with(pageable.getSort());
+	}
+
+	/**
+	 * Adds a {@link Sort} to the {@link Query} instance.
+	 * 
+	 * @param sort
+	 * @return
+	 */
+	public Query with(Sort sort) {
+
+		if (sort == null) {
+			return this;
+		}
+
+		if (this.coreSort == null) {
+			this.coreSort = sort;
+		} else {
+			this.coreSort = this.coreSort.and(sort);
+		}
+
+		return this;
+	}
+
 	public DBObject getQueryObject() {
 		DBObject dbo = new BasicDBObject();
 		for (String k : criteria.keySet()) {
@@ -120,11 +187,26 @@ public class Query {
 		return fieldSpec.getFieldsObject();
 	}

+	@SuppressWarnings("deprecation")
 	public DBObject getSortObject() {
-		if (this.sort == null) {
+
+		if (this.coreSort == null && this.sort == null) {
 			return null;
 		}
-		return this.sort.getSortObject();
+
+		DBObject dbo = new BasicDBObject();
+
+		if (this.coreSort != null) {
+			for (org.springframework.data.domain.Sort.Order order : this.coreSort) {
+				dbo.put(order.getProperty(), order.isAscending() ? 1 : -1);
+			}
+		}
+
+		if (this.sort != null) {
+			dbo.putAll(this.sort.getSortObject());
+		}
+
+		return dbo;
 	}

 	public int getSkip() {
@@ -152,4 +234,50 @@ public class Query {
 		return String.format("Query: %s, Fields: %s, Sort: %s", serializeToJsonSafely(getQueryObject()),
 				serializeToJsonSafely(getFieldsObject()), serializeToJsonSafely(getSortObject()));
 	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see java.lang.Object#equals(java.lang.Object)
+	 */
+	@Override
+	public boolean equals(Object obj) {
+
+		if (this == obj) {
+			return true;
+		}
+
+		if (obj == null || !getClass().equals(obj.getClass())) {
+			return false;
+		}
+
+		Query that = (Query) obj;
+
+		boolean criteriaEqual = this.criteria.equals(that.criteria);
+		boolean fieldsEqual = this.fieldSpec == null ? that.fieldSpec == null : this.fieldSpec.equals(that.fieldSpec);
+		boolean sortEqual = this.sort == null ? that.sort == null : this.sort.equals(that.sort);
+		boolean hintEqual = this.hint == null ? that.hint == null : this.hint.equals(that.hint);
+		boolean skipEqual = this.skip == that.skip;
+		boolean limitEqual = this.limit == that.limit;
+
+		return criteriaEqual && fieldsEqual && sortEqual && hintEqual && skipEqual && limitEqual;
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see java.lang.Object#hashCode()
+	 */
+	@Override
+	public int hashCode() {
+
+		int result = 17;
+
+		result += 31 * criteria.hashCode();
+		result += 31 * nullSafeHashCode(fieldSpec);
+		result += 31 * nullSafeHashCode(sort);
+		result += 31 * nullSafeHashCode(hint);
+		result += 31 * skip;
+		result += 31 * limit;
+
+		return result;
+	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/SerializationUtils.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/SerializationUtils.java
@@ -13,7 +13,7 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-package org.springframework.data.mongodb.core;
+package org.springframework.data.mongodb.core.query;

 import java.util.Collection;
 import java.util.Iterator;
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Sort.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Sort.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2011 the original author or authors.
+ * Copyright 2010-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -21,6 +21,15 @@ import java.util.Map;
 import com.mongodb.BasicDBObject;
 import com.mongodb.DBObject;

+/**
+ * Helper class to define sorting criterias for a Query instance.
+ * 
+ * @author Thomas Risberg
+ * @author Oliver Gierke
+ * @deprecated use {@link org.springframework.data.domain.Sort} instead. See
+ *             {@link Query#with(org.springframework.data.domain.Sort)}.
+ */
+@Deprecated
 public class Sort {

 	private Map<String, Order> fieldSpec = new LinkedHashMap<String, Order>();
@@ -40,7 +49,7 @@ public class Sort {
 	public DBObject getSortObject() {
 		DBObject dbo = new BasicDBObject();
 		for (String k : fieldSpec.keySet()) {
-			dbo.put(k, (fieldSpec.get(k).equals(Order.ASCENDING) ? 1 : -1));
+			dbo.put(k, fieldSpec.get(k).equals(Order.ASCENDING) ? 1 : -1);
 		}
 		return dbo;
 	}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Update.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Update.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2011 the original author or authors.
+ * Copyright 2010-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -15,13 +15,23 @@
 */
 package org.springframework.data.mongodb.core.query;

+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
+import java.util.List;
+
+import org.springframework.dao.InvalidDataAccessApiUsageException;

 import com.mongodb.BasicDBObject;
 import com.mongodb.DBObject;
-import org.springframework.dao.InvalidDataAccessApiUsageException;

+/**
+ * Class to easily construct MongoDB update clauses.
+ * 
+ * @author Thomas Risberg
+ * @author Mark Pollack
+ * @author Oliver Gierke
+ */
 public class Update {

 	public enum Position {
@@ -40,6 +50,34 @@ public class Update {
 		return new Update().set(key, value);
 	}

+	/**
+	 * Creates an {@link Update} instance from the given {@link DBObject}. Allows to explicitly exlude fields from making
+	 * it into the created {@link Update} object. Note, that this will set attributes directly and <em>not</em> use
+	 * {@literal $set}. This means fields not given in the {@link DBObject} will be nulled when executing the update. To
+	 * create an only-updating {@link Update} instance of a {@link DBObject}, call {@link #set(String, Object)} for each
+	 * value in it.
+	 * 
+	 * @param object the source {@link DBObject} to create the update from.
+	 * @param exclude the fields to exclude.
+	 * @return
+	 */
+	public static Update fromDBObject(DBObject object, String... exclude) {
+
+		Update update = new Update();
+		List<String> excludeList = Arrays.asList(exclude);
+
+		for (String key : object.keySet()) {
+
+			if (excludeList.contains(key)) {
+				continue;
+			}
+
+			update.modifierOps.put(key, object.get(key));
+		}
+
+		return update;
+	}
+
 	/**
 	 * Update using the $set update modifier
 	 * 
@@ -125,7 +163,7 @@ public class Update {
 	 * @return
 	 */
 	public Update pop(String key, Position pos) {
-		addMultiFieldOperation("$pop", key, (pos == Position.FIRST ? -1 : 1));
+		addMultiFieldOperation("$pop", key, pos == Position.FIRST ? -1 : 1);
 		return this;
 	}

@@ -179,22 +217,23 @@ public class Update {
 		return dbo;
 	}

-	@SuppressWarnings("unchecked")
 	protected void addMultiFieldOperation(String operator, String key, Object value) {
+
 		Object existingValue = this.modifierOps.get(operator);
-		LinkedHashMap<String, Object> keyValueMap;
+		DBObject keyValueMap;
+
 		if (existingValue == null) {
-			keyValueMap = new LinkedHashMap<String, Object>();
+			keyValueMap = new BasicDBObject();
 			this.modifierOps.put(operator, keyValueMap);
 		} else {
-			if (existingValue instanceof LinkedHashMap) {
-				keyValueMap = (LinkedHashMap<String, Object>) existingValue;
+			if (existingValue instanceof BasicDBObject) {
+				keyValueMap = (BasicDBObject) existingValue;
 			} else {
 				throw new InvalidDataAccessApiUsageException("Modifier Operations should be a LinkedHashMap but was "
 						+ existingValue.getClass());
 			}
 		}
+
 		keyValueMap.put(key, value);
 	}
-
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/AntPath.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/AntPath.java
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2011 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.gridfs;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.springframework.util.Assert;
+
+/**
+ * Value object to abstract Ant paths.
+ * 
+ * @author Oliver Gierke
+ */
+class AntPath {
+
+	private static final String PREFIX_DELIMITER = ":";
+	private static final Pattern WILDCARD_PATTERN = Pattern.compile("\\?|\\*\\*|\\*");
+
+	private final String path;
+
+	/**
+	 * Creates a new {@link AntPath} from the given path.
+	 * 
+	 * @param path must not be {@literal null}.
+	 */
+	public AntPath(String path) {
+		Assert.notNull(path);
+		this.path = path;
+	}
+
+	/**
+	 * Returns whether the path is a pattern.
+	 * 
+	 * @return
+	 */
+	public boolean isPattern() {
+		String path = stripPrefix(this.path);
+		return (path.indexOf('*') != -1 || path.indexOf('?') != -1);
+	}
+
+	private static String stripPrefix(String path) {
+		int index = path.indexOf(PREFIX_DELIMITER);
+		return (index > -1 ? path.substring(index + 1) : path);
+	}
+
+	/**
+	 * Returns the regular expression equivalent of this Ant path.
+	 * 
+	 * @return
+	 */
+	public String toRegex() {
+
+		StringBuilder patternBuilder = new StringBuilder();
+		Matcher m = WILDCARD_PATTERN.matcher(path);
+		int end = 0;
+
+		while (m.find()) {
+
+			patternBuilder.append(quote(path, end, m.start()));
+			String match = m.group();
+
+			if ("?".equals(match)) {
+				patternBuilder.append('.');
+			} else if ("**".equals(match)) {
+				patternBuilder.append(".*");
+			} else if ("*".equals(match)) {
+				patternBuilder.append("[^/]*");
+			}
+
+			end = m.end();
+		}
+
+		patternBuilder.append(quote(path, end, path.length()));
+		return patternBuilder.toString();
+	}
+
+	private static String quote(String s, int start, int end) {
+		if (start == end) {
+			return "";
+		}
+		return Pattern.quote(s.substring(start, end));
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see java.lang.Object#toString()
+	 */
+	@Override
+	public String toString() {
+		return path;
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/GridFsCriteria.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/GridFsCriteria.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2011 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.gridfs;
+
+import org.springframework.data.mongodb.core.query.Criteria;
+
+/**
+ * GridFs-specific helper class to define {@link Criteria}s.
+ * 
+ * @author Oliver Gierke
+ */
+public class GridFsCriteria extends Criteria {
+
+	/**
+	 * Creates a new {@link GridFsCriteria} for the given key.
+	 * 
+	 * @param key
+	 */
+	public GridFsCriteria(String key) {
+		super(key);
+	}
+
+	/**
+	 * Creates a {@link GridFsCriteria} for restrictions on the file's metadata.
+	 * 
+	 * @return
+	 */
+	public static GridFsCriteria whereMetaData() {
+		return new GridFsCriteria("metadata");
+	}
+
+	/**
+	 * Creates a {@link GridFsCriteria} for restrictions on a single file's metadata item.
+	 * 
+	 * @param metadataKey
+	 * @return
+	 */
+	public static GridFsCriteria whereMetaData(String metadataKey) {
+		String extension = metadataKey == null ? "" : "." + metadataKey;
+		return new GridFsCriteria(String.format("metadata%s", extension));
+	}
+
+	/**
+	 * Creates a {@link GridFsCriteria} for restrictions on the file's name.
+	 * 
+	 * @return
+	 */
+	public static GridFsCriteria whereFilename() {
+		return new GridFsCriteria("filename");
+	}
+
+	/**
+	 * Creates a {@link GridFsCriteria} for restrictions on the file's content type.
+	 * 
+	 * @return
+	 */
+	public static GridFsCriteria whereContentType() {
+		return new GridFsCriteria("contentType");
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/GridFsOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/GridFsOperations.java
@@ -0,0 +1,142 @@
+/*
+ * Copyright 2011-2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.gridfs;
+
+import java.io.InputStream;
+import java.util.List;
+
+import org.springframework.core.io.support.ResourcePatternResolver;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.mongodb.core.query.Query;
+
+import com.mongodb.DBObject;
+import com.mongodb.gridfs.GridFSDBFile;
+import com.mongodb.gridfs.GridFSFile;
+
+/**
+ * Collection of operations to store and read files from MongoDB GridFS.
+ * 
+ * @author Oliver Gierke
+ * @author Philipp Schneider
+ */
+public interface GridFsOperations extends ResourcePatternResolver {
+
+	/**
+	 * Stores the given content into a file with the given name.
+	 * 
+	 * @param content must not be {@literal null}.
+	 * @param filename must not be {@literal null} or empty.
+	 * @return the {@link GridFSFile} just created
+	 */
+	GridFSFile store(InputStream content, String filename);
+
+	/**
+	 * Stores the given content into a file with the given name and content type.
+	 * 
+	 * @param content must not be {@literal null}.
+	 * @param filename must not be {@literal null} or empty.
+	 * @param contentType can be {@literal null}.
+	 * @return the {@link GridFSFile} just created
+	 */
+	GridFSFile store(InputStream content, String filename, String contentType);
+
+	/**
+	 * Stores the given content into a file with the given name using the given metadata. The metadata object will be
+	 * marshalled before writing.
+	 * 
+	 * @param content must not be {@literal null}.
+	 * @param filename must not be {@literal null} or empty.
+	 * @param metadata can be {@literal null}.
+	 * @return the {@link GridFSFile} just created
+	 */
+	GridFSFile store(InputStream content, String filename, Object metadata);
+
+	/**
+	 * Stores the given content into a file with the given name and content type using the given metadata. The metadata
+	 * object will be marshalled before writing.
+	 * 
+	 * @param content must not be {@literal null}.
+	 * @param filename must not be {@literal null} or empty.
+	 * @param contentType can be {@literal null}.
+	 * @param metadata can be {@literal null}
+	 * @return the {@link GridFSFile} just created
+	 */
+	GridFSFile store(InputStream content, String filename, String contentType, Object metadata);
+
+	/**
+	 * Stores the given content into a file with the given name using the given metadata.
+	 * 
+	 * @param content must not be {@literal null}.
+	 * @param filename must not be {@literal null} or empty.
+	 * @param metadata can be {@literal null}.
+	 * @return the {@link GridFSFile} just created
+	 */
+	GridFSFile store(InputStream content, String filename, DBObject metadata);
+
+	/**
+	 * Stores the given content into a file with the given name and content type using the given metadata.
+	 * 
+	 * @param content must not be {@literal null}.
+	 * @param filename must not be {@literal null} or empty.
+	 * @param contentType can be {@literal null}.
+	 * @param metadata can be {@literal null}.
+	 * @return the {@link GridFSFile} just created
+	 */
+	GridFSFile store(InputStream content, String filename, String contentType, DBObject metadata);
+
+	/**
+	 * Returns all files matching the given query. Note, that currently {@link Sort} criterias defined at the
+	 * {@link Query} will not be regarded as MongoDB does not support ordering for GridFS file access.
+	 * 
+	 * @see https://jira.mongodb.org/browse/JAVA-431
+	 * @param query
+	 * @return
+	 */
+	List<GridFSDBFile> find(Query query);
+
+	/**
+	 * Returns a single file matching the given query or {@literal null} in case no file matches.
+	 * 
+	 * @param query
+	 * @return
+	 */
+	GridFSDBFile findOne(Query query);
+
+	/**
+	 * Deletes all files matching the given {@link Query}.
+	 * 
+	 * @param query
+	 */
+	void delete(Query query);
+
+	/**
+	 * Returns all {@link GridFsResource} with the given file name.
+	 * 
+	 * @param filename
+	 * @return
+	 * @see ResourcePatternResolver#getResource(String)
+	 */
+	GridFsResource getResource(String filename);
+
+	/**
+	 * Returns all {@link GridFsResource}s matching the given file name pattern.
+	 * 
+	 * @param filenamePattern
+	 * @return
+	 * @see ResourcePatternResolver#getResources(String)
+	 */
+	GridFsResource[] getResources(String filenamePattern);
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/GridFsResource.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/GridFsResource.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2011 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.gridfs;
+
+import java.io.IOException;
+
+import org.springframework.core.io.InputStreamResource;
+import org.springframework.core.io.Resource;
+
+import com.mongodb.gridfs.GridFSDBFile;
+
+/**
+ * {@link GridFSDBFile} based {@link Resource} implementation.
+ * 
+ * @author Oliver Gierke
+ */
+public class GridFsResource extends InputStreamResource {
+
+	private final GridFSDBFile file;
+
+	/**
+	 * Creates a new {@link GridFsResource} from the given {@link GridFSDBFile}.
+	 * 
+	 * @param file must not be {@literal null}.
+	 */
+	public GridFsResource(GridFSDBFile file) {
+		super(file.getInputStream());
+		this.file = file;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.core.io.AbstractResource#contentLength()
+	 */
+	@Override
+	public long contentLength() throws IOException {
+		return file.getLength();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.core.io.AbstractResource#getFilename()
+	 */
+	@Override
+	public String getFilename() throws IllegalStateException {
+		return file.getFilename();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.core.io.AbstractResource#lastModified()
+	 */
+	@Override
+	public long lastModified() throws IOException {
+		return file.getUploadDate().getTime();
+	}
+
+	/**
+	 * Returns the {@link Resource}'s id.
+	 * 
+	 * @return
+	 */
+	public Object getId() {
+		return file.getId();
+	}
+
+	/**
+	 * Returns the {@link Resource}'s content type.
+	 * 
+	 * @return
+	 */
+	public String getContentType() {
+		return file.getContentType();
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/GridFsTemplate.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/GridFsTemplate.java
@@ -0,0 +1,231 @@
+/*
+ * Copyright 2011-2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.gridfs;
+
+import static org.springframework.data.mongodb.core.query.Query.*;
+import static org.springframework.data.mongodb.gridfs.GridFsCriteria.*;
+
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.core.io.support.ResourcePatternResolver;
+import org.springframework.data.mongodb.MongoDbFactory;
+import org.springframework.data.mongodb.core.convert.MongoConverter;
+import org.springframework.data.mongodb.core.convert.QueryMapper;
+import org.springframework.data.mongodb.core.query.Query;
+import org.springframework.util.Assert;
+import org.springframework.util.StringUtils;
+
+import com.mongodb.BasicDBObject;
+import com.mongodb.DB;
+import com.mongodb.DBObject;
+import com.mongodb.gridfs.GridFS;
+import com.mongodb.gridfs.GridFSDBFile;
+import com.mongodb.gridfs.GridFSFile;
+import com.mongodb.gridfs.GridFSInputFile;
+
+/**
+ * {@link GridFsOperations} implementation to store content into MongoDB GridFS.
+ * 
+ * @author Oliver Gierke
+ * @author Philipp Schneider
+ */
+public class GridFsTemplate implements GridFsOperations, ResourcePatternResolver {
+
+	private final MongoDbFactory dbFactory;
+	private final String bucket;
+	private final MongoConverter converter;
+	private final QueryMapper queryMapper;
+
+	/**
+	 * Creates a new {@link GridFsTemplate} using the given {@link MongoDbFactory} and {@link MongoConverter}.
+	 * 
+	 * @param dbFactory must not be {@literal null}.
+	 * @param converter must not be {@literal null}.
+	 */
+	public GridFsTemplate(MongoDbFactory dbFactory, MongoConverter converter) {
+		this(dbFactory, converter, null);
+	}
+
+	/**
+	 * Creates a new {@link GridFsTemplate} using the given {@link MongoDbFactory} and {@link MongoConverter}.
+	 * 
+	 * @param dbFactory must not be {@literal null}.
+	 * @param converter must not be {@literal null}.
+	 * @param bucket
+	 */
+	public GridFsTemplate(MongoDbFactory dbFactory, MongoConverter converter, String bucket) {
+
+		Assert.notNull(dbFactory);
+		Assert.notNull(converter);
+
+		this.dbFactory = dbFactory;
+		this.converter = converter;
+		this.bucket = bucket;
+
+		this.queryMapper = new QueryMapper(converter);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.gridfs.GridFsOperations#store(java.io.InputStream, java.lang.String)
+	 */
+	public GridFSFile store(InputStream content, String filename) {
+		return store(content, filename, (Object) null);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.gridfs.GridFsOperations#store(java.io.InputStream, java.lang.String, java.lang.String)
+	 */
+	public GridFSFile store(InputStream content, String filename, String contentType) {
+		return store(content, filename, contentType, (Object) null);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.gridfs.GridFsOperations#store(java.io.InputStream, java.lang.String, java.lang.Object)
+	 */
+	public GridFSFile store(InputStream content, String filename, Object metadata) {
+
+		return store(content, filename, null, metadata);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.gridfs.GridFsOperations#store(java.io.InputStream, java.lang.String, java.lang.String, java.lang.Object)
+	 */
+	public GridFSFile store(InputStream content, String filename, String contentType, Object metadata) {
+
+		DBObject dbObject = null;
+
+		if (metadata != null) {
+			dbObject = new BasicDBObject();
+			converter.write(metadata, dbObject);
+		}
+
+		return store(content, filename, contentType, dbObject);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.gridfs.GridFsOperations#store(java.io.InputStream, java.lang.String, com.mongodb.DBObject)
+	 */
+	public GridFSFile store(InputStream content, String filename, DBObject metadata) {
+		return this.store(content, filename, null, metadata);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.gridfs.GridFsOperations#store(java.io.InputStream, java.lang.String, com.mongodb.DBObject)
+	 */
+	public GridFSFile store(InputStream content, String filename, String contentType, DBObject metadata) {
+
+		Assert.notNull(content);
+		Assert.hasText(filename);
+
+		GridFSInputFile file = getGridFs().createFile(content);
+		file.setFilename(filename);
+
+		if (metadata != null) {
+			file.setMetaData(metadata);
+		}
+
+		if (contentType != null) {
+			file.setContentType(contentType);
+		}
+
+		file.save();
+		return file;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.gridfs.GridFsOperations#find(com.mongodb.DBObject)
+	 */
+	public List<GridFSDBFile> find(Query query) {
+		return getGridFs().find(getMappedQuery(query));
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.gridfs.GridFsOperations#findOne(com.mongodb.DBObject)
+	 */
+	public GridFSDBFile findOne(Query query) {
+		return getGridFs().findOne(getMappedQuery(query));
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.gridfs.GridFsOperations#delete(org.springframework.data.mongodb.core.query.Query)
+	 */
+	public void delete(Query query) {
+		getGridFs().remove(getMappedQuery(query));
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.core.io.ResourceLoader#getClassLoader()
+	 */
+	public ClassLoader getClassLoader() {
+		return dbFactory.getClass().getClassLoader();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.core.io.ResourceLoader#getResource(java.lang.String)
+	 */
+	public GridFsResource getResource(String location) {
+		return new GridFsResource(findOne(query(whereFilename().is(location))));
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.core.io.support.ResourcePatternResolver#getResources(java.lang.String)
+	 */
+	public GridFsResource[] getResources(String locationPattern) {
+
+		if (!StringUtils.hasText(locationPattern)) {
+			return new GridFsResource[0];
+		}
+
+		AntPath path = new AntPath(locationPattern);
+
+		if (path.isPattern()) {
+
+			List<GridFSDBFile> files = find(query(whereFilename().regex(path.toRegex())));
+			List<GridFsResource> resources = new ArrayList<GridFsResource>(files.size());
+
+			for (GridFSDBFile file : files) {
+				resources.add(new GridFsResource(file));
+			}
+
+			return resources.toArray(new GridFsResource[resources.size()]);
+		}
+
+		return new GridFsResource[] { getResource(locationPattern) };
+	}
+
+	private DBObject getMappedQuery(Query query) {
+		return query == null ? null : queryMapper.getMappedObject(query.getQueryObject(), null);
+	}
+
+	private GridFS getGridFs() {
+		DB db = dbFactory.getDb();
+		return bucket == null ? new GridFS(db) : new GridFS(db, bucket);
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/package-info.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/gridfs/package-info.java
@@ -0,0 +1,5 @@
+/**
+ * Support for MongoDB GridFS feature.
+ */
+package org.springframework.data.mongodb.gridfs;
+
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/monitor/AbstractMonitor.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/monitor/AbstractMonitor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2011 the original author or authors.
+ * Copyright 2002-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -15,13 +15,15 @@
 */
 package org.springframework.data.mongodb.monitor;

+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.data.authentication.UserCredentials;
+import org.springframework.data.mongodb.core.MongoDbUtils;
+
 import com.mongodb.CommandResult;
 import com.mongodb.DB;
 import com.mongodb.Mongo;
 import com.mongodb.MongoException;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.springframework.data.mongodb.core.MongoDbUtils;

 /**
 * Base class to encapsulate common configuration settings when connecting to a database
@@ -30,7 +32,7 @@ import org.springframework.data.mongodb.core.MongoDbUtils;
 */
 public abstract class AbstractMonitor {

-	private final Log logger = LogFactory.getLog(getClass());
+	private final Logger logger = LoggerFactory.getLogger(getClass());

 	protected Mongo mongo;
 	private String username;
@@ -51,7 +53,6 @@ public abstract class AbstractMonitor {
 	 * @param password The password to use
 	 */
 	public void setPassword(String password) {
-
 		this.password = password;
 	}

@@ -65,6 +66,6 @@ public abstract class AbstractMonitor {
 	}

 	public DB getDb(String databaseName) {
-		return MongoDbUtils.getDB(mongo, databaseName, username, password == null ? null : password.toCharArray());
+		return MongoDbUtils.getDB(mongo, databaseName, new UserCredentials(username, password));
 	}
 }
--- a/Show More
+++ b/Show More