DATAMONGO-799 - Release version 1.4.0.M1.

DATAMONGO-801 - Prepare release 1.4.0 M1.
Updated project metadata and bumped versions.
2013-11-19 04:19:10 -08:00 · 2013-11-19 13:12:06 +01:00 · 2013-11-18 13:50:42 +01:00 · 2013-11-12 11:57:25 +01:00 · 2013-11-12 11:50:46 +01:00 · 2013-11-08 19:19:16 +01:00
165 changed files with 8322 additions and 1029 deletions
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ Add the Maven dependency:
 <dependency>
  <groupId>org.springframework.data</groupId>
  <artifactId>spring-data-mongodb</artifactId>
-  <version>1.2.3.RELEASE</version>
+  <version>1.3.2.RELEASE</version>
 </dependency>
 ```

@@ -36,7 +36,7 @@ If you'd rather like the latest snapshots of the upcoming major version, use our
 <dependency>
  <groupId>org.springframework.data</groupId>
  <artifactId>spring-data-mongodb</artifactId>
-  <version>1.3.0.BUILD-SNAPSHOT</version>
+  <version>1.4.0.BUILD-SNAPSHOT</version>
 </dependency>

 <repository>
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 	
 	<groupId>org.springframework.data</groupId>
 	<artifactId>spring-data-mongodb-parent</artifactId>
-	<version>1.3.0.RC1</version>
+	<version>1.4.0.M1</version>
 	<packaging>pom</packaging>

 	<name>Spring Data MongoDB</name>
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.data.build</groupId>
 		<artifactId>spring-data-parent</artifactId>
-		<version>1.1.1.RELEASE</version>
+		<version>1.3.0.M1</version>
 		<relativePath>../spring-data-build/parent/pom.xml</relativePath>
 	</parent>
 	
@@ -29,19 +29,19 @@
 	<properties>
 		<project.type>multi</project.type>
 		<dist.id>spring-data-mongodb</dist.id>
-		<springdata.commons>1.6.0.RC1</springdata.commons>
-		<mongo>2.10.1</mongo>
+		<springdata.commons>1.7.0.M1</springdata.commons>
+		<mongo>2.11.3</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>
+			<email>ogierke at gopivotal.com</email>
+			<organization>Pivotal</organization>
+			<organizationUrl>http://www.gopivotal.com</organizationUrl>
 			<roles>
-				<role>Project Lean</role>
+				<role>Project Lead</role>
 			</roles>
 			<timezone>+1</timezone>
 		</developer>
@@ -49,8 +49,8 @@
 			<id>trisberg</id>
 			<name>Thomas Risberg</name>
 			<email>trisberg at vmware.com</email>
-			<organization>SpringSource</organization>
-			<organizationUrl>http://www.springsource.com</organizationUrl>
+			<organization>Pivotal</organization>
+			<organizationUrl>http://www.gopivotal.com</organizationUrl>
 			<roles>
 				<role>Developer</role>
 			</roles>
@@ -59,9 +59,9 @@
 		<developer>
 			<id>mpollack</id>
 			<name>Mark Pollack</name>
-			<email>mpollack at vmware.com</email>
-			<organization>SpringSource</organization>
-			<organizationUrl>http://www.springsource.com</organizationUrl>
+			<email>mpollack at gopivotal.com</email>
+			<organization>Pivotal</organization>
+			<organizationUrl>http://www.gopivotal.com</organizationUrl>
 			<roles>
 				<role>Developer</role>
 			</roles>
@@ -70,14 +70,25 @@
 		<developer>
 			<id>jbrisbin</id>
 			<name>Jon Brisbin</name>
-			<email>jbrisbin at vmware.com</email>
-			<organization>SpringSource</organization>
-			<organizationUrl>http://www.springsource.com</organizationUrl>
+			<email>jbrisbin at gopivotal.com</email>
+			<organization>Pivotal</organization>
+			<organizationUrl>http://www.gopivotal.com</organizationUrl>
 			<roles>
 				<role>Developer</role>
 			</roles>
 			<timezone>-6</timezone>
 		</developer>
+		<developer>
+			<id>tdarimont</id>
+			<name>Thomas Darimont</name>
+			<email>tdarimont at gopivotal.com</email>
+			<organization>Pivotal</organization>
+			<organizationUrl>http://www.gopivotal.com</organizationUrl>
+			<roles>
+				<role>Developer</role>
+			</roles>
+			<timezone>+1</timezone>
+		</developer>
 	</developers>

 	<dependencies>
@@ -91,7 +102,7 @@
 	
 	<repositories>
 		<repository>
-			<id>spring-lib-milestone</id>
+			<id>spring-libs-milestone</id>
 			<url>http://repo.springsource.org/libs-milestone-local</url>
 		</repository>
 	</repositories>
--- a/spring-data-mongodb-cross-store/pom.xml
+++ b/spring-data-mongodb-cross-store/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>1.3.0.RC1</version>
+		<version>1.4.0.M1</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 	
@@ -52,7 +52,7 @@
 		<dependency>
 			<groupId>org.springframework.data</groupId>
 			<artifactId>spring-data-mongodb</artifactId>
-			<version>1.3.0.RC1</version>
+			<version>1.4.0.M1</version>
 		</dependency>

 		<dependency>
--- a/spring-data-mongodb-cross-store/template.mf
+++ b/spring-data-mongodb-cross-store/template.mf
@@ -12,7 +12,7 @@ Import-Template:
 org.aspectj.*;version="${aspectj:[1.0.0, 2.0.0)}",
 org.bson.*;version="0",
 org.slf4j.*;version="${slf4j:[=.=.=,+1.0.0)}",
- org.springframework.*;version="${spring30:[=.=.=.=,+1.0.0)}",
+ org.springframework.*;version="${spring:[=.=.=.=,+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
@@ -13,7 +13,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>1.3.0.RC1</version>
+		<version>1.4.0.M1</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 	
--- a/spring-data-mongodb-log4j/pom.xml
+++ b/spring-data-mongodb-log4j/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>1.3.0.RC1</version>
+		<version>1.4.0.M1</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>

--- a/spring-data-mongodb/Spring
+++ b/spring-data-mongodb/Spring
@@ -1,153 +1,176 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<context version="7.1.7.187">
-    <scope name="spring-data-mongodb" type="Project">
-        <element name="Filter" type="TypeFilterReferenceOverridden">
-            <element name="org.springframework.data.mongodb.**" type="IncludeTypePattern"/>
+<context version="7.1.9.205">
+    <scope type="Project" name="spring-data-mongodb">
+        <element type="TypeFilterReferenceOverridden" name="Filter">
+            <element type="IncludeTypePattern" name="org.springframework.data.mongodb.**"/>
        </element>
        <architecture>
-            <element name="Config" type="Layer">
-                <element name="Assignment" type="TypeFilter">
-                    <element name="**.config.**" type="WeakTypePattern"/>
+            <element type="Layer" name="Config">
+                <element type="TypeFilter" name="Assignment">
+                    <element type="WeakTypePattern" name="**.config.**"/>
                </element>
-                <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core"/>
-                <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|GridFS"/>
-                <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Monitoring"/>
-                <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Repositories"/>
+                <dependency toName="Project|spring-data-mongodb::Layer|Core" type="AllowedDependency"/>
+                <dependency toName="Project|spring-data-mongodb::Layer|GridFS" type="AllowedDependency"/>
+                <dependency toName="Project|spring-data-mongodb::Layer|Monitoring" type="AllowedDependency"/>
+                <dependency toName="Project|spring-data-mongodb::Layer|Repositories" type="AllowedDependency"/>
            </element>
-            <element name="Repositories" type="Layer">
-                <element name="Assignment" type="TypeFilter">
-                    <element name="**.repository.**" type="IncludeTypePattern"/>
+            <element type="Layer" name="Repositories">
+                <element type="TypeFilter" name="Assignment">
+                    <element type="IncludeTypePattern" name="**.repository.**"/>
                </element>
-                <element name="API" type="Subsystem">
-                    <element name="Assignment" type="TypeFilter">
-                        <element name="**.repository.*" type="IncludeTypePattern"/>
+                <element type="Subsystem" name="API">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="IncludeTypePattern" name="**.repository.*"/>
                    </element>
                </element>
-                <element name="Query" type="Subsystem">
-                    <element name="Assignment" type="TypeFilter">
-                        <element name="**.query.**" type="IncludeTypePattern"/>
+                <element type="Subsystem" name="Query">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="IncludeTypePattern" name="**.query.**"/>
                    </element>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Repositories::Subsystem|API"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Repositories::Subsystem|API" type="AllowedDependency"/>
                </element>
-                <element name="Implementation" type="Subsystem">
-                    <element name="Assignment" type="TypeFilter">
-                        <element name="**.support.**" type="IncludeTypePattern"/>
+                <element type="Subsystem" name="Implementation">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="IncludeTypePattern" name="**.support.**"/>
                    </element>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Repositories::Subsystem|API"/>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Repositories::Subsystem|Query"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Repositories::Subsystem|API" type="AllowedDependency"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Repositories::Subsystem|Query" type="AllowedDependency"/>
                </element>
-                <element name="Config" type="Subsystem">
-                    <element name="Assignment" type="TypeFilter">
-                        <element name="**.config.**" type="IncludeTypePattern"/>
+                <element type="Subsystem" name="Config">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="IncludeTypePattern" name="**.config.**"/>
                    </element>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Repositories::Subsystem|Implementation"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Repositories::Subsystem|Implementation" type="AllowedDependency"/>
                </element>
-                <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core"/>
+                <dependency toName="Project|spring-data-mongodb::Layer|Core" type="AllowedDependency"/>
            </element>
-            <element name="Monitoring" type="Layer">
-                <element name="Assignment" type="TypeFilter">
-                    <element name="**.monitor.**" type="IncludeTypePattern"/>
+            <element type="Layer" name="Monitoring">
+                <element type="TypeFilter" name="Assignment">
+                    <element type="IncludeTypePattern" name="**.monitor.**"/>
                </element>
-                <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core"/>
+                <dependency toName="Project|spring-data-mongodb::Layer|Core" type="AllowedDependency"/>
            </element>
-            <element name="GridFS" type="Layer">
-                <element name="Assignment" type="TypeFilter">
-                    <element name="**.gridfs.**" type="IncludeTypePattern"/>
+            <element type="Layer" name="GridFS">
+                <element type="TypeFilter" name="Assignment">
+                    <element type="IncludeTypePattern" name="**.gridfs.**"/>
                </element>
-                <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core"/>
+                <dependency toName="Project|spring-data-mongodb::Layer|Core" type="AllowedDependency"/>
            </element>
-            <element name="Core" type="Layer">
-                <element name="Assignment" type="TypeFilter">
-                    <element name="**.core.**" type="IncludeTypePattern"/>
+            <element type="Layer" name="Core">
+                <element type="TypeFilter" name="Assignment">
+                    <element type="IncludeTypePattern" name="**.core.**"/>
                </element>
-                <element name="Mapping" type="Subsystem">
-                    <element name="Assignment" type="TypeFilter">
-                        <element name="**.mapping.**" type="IncludeTypePattern"/>
+                <element type="Subsystem" name="Mapping">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="IncludeTypePattern" name="**.mapping.**"/>
                    </element>
                </element>
-                <element name="Geospatial" type="Subsystem">
-                    <element name="Assignment" type="TypeFilter">
-                        <element name="**.geo.**" type="IncludeTypePattern"/>
+                <element type="Subsystem" name="Geospatial">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="IncludeTypePattern" name="**.geo.**"/>
                    </element>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Mapping"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Mapping" type="AllowedDependency"/>
                </element>
-                <element name="Query" type="Subsystem">
-                    <element name="Assignment" type="TypeFilter">
-                        <element name="**.query.**" type="IncludeTypePattern"/>
+                <element type="Subsystem" name="Query">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="IncludeTypePattern" name="**.query.**"/>
                    </element>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Geospatial"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Geospatial" type="AllowedDependency"/>
                </element>
-                <element name="Index" type="Subsystem">
-                    <element name="Assignment" type="TypeFilter">
-                        <element name="**.index.**" type="IncludeTypePattern"/>
+                <element type="Subsystem" name="Conversion">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="IncludeTypePattern" name="**.convert.**"/>
                    </element>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Mapping"/>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Query"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Mapping" type="AllowedDependency"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Query" type="AllowedDependency"/>
                </element>
-                <element name="Core" type="Subsystem">
-                    <element name="Assignment" type="TypeFilter">
-                        <element name="**.core.**" type="WeakTypePattern"/>
+                <element type="Subsystem" name="SpEL">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="IncludeTypePattern" name="**.spel.**"/>
                    </element>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Geospatial"/>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Index"/>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Mapping"/>
-                    <dependency type="AllowedDependency" toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Query"/>
+                </element>
+                <element type="Subsystem" name="Aggregation">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="IncludeTypePattern" name="**.aggregation.**"/>
+                    </element>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Conversion" type="AllowedDependency"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Mapping" type="AllowedDependency"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Query" type="AllowedDependency"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|SpEL" type="AllowedDependency"/>
+                </element>
+                <element type="Subsystem" name="Index">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="IncludeTypePattern" name="**.index.**"/>
+                    </element>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Mapping" type="AllowedDependency"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Query" type="AllowedDependency"/>
+                </element>
+                <element type="Subsystem" name="Core">
+                    <element type="TypeFilter" name="Assignment">
+                        <element type="WeakTypePattern" name="**.core.**"/>
+                    </element>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Aggregation" type="AllowedDependency"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Conversion" type="AllowedDependency"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Geospatial" type="AllowedDependency"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Index" type="AllowedDependency"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Mapping" type="AllowedDependency"/>
+                    <dependency toName="Project|spring-data-mongodb::Layer|Core::Subsystem|Query" type="AllowedDependency"/>
                </element>
            </element>
-            <element name="API" type="Subsystem">
-                <element name="Assignment" type="TypeFilter">
-                    <element name="org.springframework.data.mongodb.*" type="IncludeTypePattern"/>
+            <element type="Subsystem" name="API">
+                <element type="TypeFilter" name="Assignment">
+                    <element type="IncludeTypePattern" name="org.springframework.data.mongodb.*"/>
                </element>
                <stereotype name="Public"/>
            </element>
        </architecture>
        <workspace>
-            <element name="src/main/java" type="JavaRootDirectory">
+            <element type="JavaRootDirectory" name="src/main/java">
                <reference name="Project|spring-data-mongodb::BuildUnit|spring-data-mongodb"/>
            </element>
-            <element name="target/classes" type="JavaRootDirectory">
+            <element type="JavaRootDirectory" name="target/classes">
                <reference name="Project|spring-data-mongodb::BuildUnit|spring-data-mongodb"/>
            </element>
        </workspace>
        <physical>
-            <element name="spring-data-mongodb" type="BuildUnit"/>
+            <element type="BuildUnit" name="spring-data-mongodb"/>
        </physical>
    </scope>
-    <scope name="External" type="External">
-        <element name="Filter" type="TypeFilter">
-            <element name="**" type="IncludeTypePattern"/>
-            <element name="java.**" type="ExcludeTypePattern"/>
-            <element name="javax.**" type="ExcludeTypePattern"/>
+    <scope type="External" name="External">
+        <element type="TypeFilter" name="Filter">
+            <element type="IncludeTypePattern" name="**"/>
+            <element type="ExcludeTypePattern" name="java.**"/>
+            <element type="ExcludeTypePattern" name="javax.**"/>
        </element>
        <architecture>
-            <element name="Spring" type="Subsystem">
-                <element name="Assignment" type="TypeFilter">
-                    <element name="org.springframework.**" type="IncludeTypePattern"/>
-                    <element name="org.springframework.data.**" type="ExcludeTypePattern"/>
+            <element type="Subsystem" name="Spring">
+                <element type="TypeFilter" name="Assignment">
+                    <element type="IncludeTypePattern" name="org.springframework.**"/>
+                    <element type="ExcludeTypePattern" name="org.springframework.data.**"/>
                </element>
            </element>
-            <element name="Spring Data Core" type="Subsystem">
-                <element name="Assignment" type="TypeFilter">
-                    <element name="org.springframework.data.**" type="IncludeTypePattern"/>
+            <element type="Subsystem" name="Spring Data Core">
+                <element type="TypeFilter" name="Assignment">
+                    <element type="IncludeTypePattern" name="org.springframework.data.**"/>
                </element>
            </element>
-            <element name="Mongo Java Driver" type="Subsystem">
-                <element name="Assignment" type="TypeFilter">
-                    <element name="com.mongodb.**" type="IncludeTypePattern"/>
-                    <element name="org.bson.**" type="IncludeTypePattern"/>
+            <element type="Subsystem" name="Mongo Java Driver">
+                <element type="TypeFilter" name="Assignment">
+                    <element type="IncludeTypePattern" name="com.mongodb.**"/>
+                    <element type="IncludeTypePattern" name="org.bson.**"/>
                </element>
            </element>
-            <element name="Querydsl" type="Subsystem">
-                <element name="Assignment" type="TypeFilter">
-                    <element name="com.mysema.query.**" type="IncludeTypePattern"/>
+            <element type="Subsystem" name="Querydsl">
+                <element type="TypeFilter" name="Assignment">
+                    <element type="IncludeTypePattern" name="com.mysema.query.**"/>
                </element>
            </element>
        </architecture>
    </scope>
-    <scope name="Global" type="Global">
-        <element name="Configuration" type="Configuration"/>
-        <element name="Filter" type="TypeFilter">
-            <element name="**" type="IncludeTypePattern"/>
+    <scope type="Global" name="Global">
+        <element type="Configuration" name="Configuration"/>
+        <element type="TypeFilter" name="Filter">
+            <element type="IncludeTypePattern" name="**"/>
        </element>
    </scope>
 </context>
--- a/spring-data-mongodb/pom.xml
+++ b/spring-data-mongodb/pom.xml
@@ -11,12 +11,13 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>1.3.0.RC1</version>
+		<version>1.4.0.M1</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>

 	<properties>
 		<validation>1.0.0.GA</validation>
+		<objenesis>1.3</objenesis>
 	</properties>

 	<dependencies>
@@ -55,7 +56,7 @@
 		</dependency>

 		<!--  Spring Data -->
-			<dependency>
+		<dependency>
 			<groupId>${project.groupId}</groupId>
 			<artifactId>spring-data-commons</artifactId>
 			<version>${springdata.commons}</version>
@@ -119,6 +120,13 @@
 			<version>${validation}</version>
 			<optional>true</optional>
 		</dependency>
+		
+		<dependency>
+			<groupId>org.objenesis</groupId>
+			<artifactId>objenesis</artifactId>
+			<version>${objenesis}</version>
+			<optional>true</optional>
+		</dependency>

 		<dependency>
 			<groupId>org.hibernate</groupId>
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/LazyLoadingException.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/LazyLoadingException.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;
+
+import org.springframework.dao.UncategorizedDataAccessException;
+
+/**
+ * @author Oliver Gierke
+ */
+public class LazyLoadingException extends UncategorizedDataAccessException {
+
+	private static final long serialVersionUID = -7089224903873220037L;
+
+	/**
+	 * @param msg
+	 * @param cause
+	 */
+	public LazyLoadingException(String msg, Throwable cause) {
+		super(msg, cause);
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoDbFactory.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoDbFactory.java
@@ -1,6 +1,23 @@
+/*
+ * 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;

 import org.springframework.dao.DataAccessException;
+import org.springframework.dao.support.PersistenceExceptionTranslator;
+import org.springframework.data.mongodb.core.MongoExceptionTranslator;

 import com.mongodb.DB;

@@ -8,6 +25,7 @@ import com.mongodb.DB;
 * Interface for factories creating {@link DB} instances.
 * 
 * @author Mark Pollack
+ * @author Thomas Darimont
 */
 public interface MongoDbFactory {

@@ -27,4 +45,11 @@ public interface MongoDbFactory {
 	 * @throws DataAccessException
 	 */
 	DB getDb(String dbName) throws DataAccessException;
+
+	/**
+	 * Exposes a shared {@link MongoExceptionTranslator}.
+	 * 
+	 * @return will never be {@literal null}.
+	 */
+	PersistenceExceptionTranslator getExceptionTranslator();
 }
--- 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
@@ -31,6 +31,8 @@ import org.springframework.data.mapping.context.MappingContextIsNewStrategyFacto
 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.DbRefResolver;
+import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver;
 import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
 import org.springframework.data.mongodb.core.mapping.CamelCaseAbbreviatingFieldNamingStrategy;
 import org.springframework.data.mongodb.core.mapping.Document;
@@ -47,6 +49,7 @@ import com.mongodb.Mongo;
 * 
 * @author Mark Pollack
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
@Configuration
 public abstract class AbstractMongoConfiguration {
@@ -58,6 +61,16 @@ public abstract class AbstractMongoConfiguration {
 	 */
 	protected abstract String getDatabaseName();

+	/**
+	 * Return the name of the authentication database to use. Defaults to {@literal null} and will turn into the value
+	 * returned by {@link #getDatabaseName()} later on effectively.
+	 * 
+	 * @return
+	 */
+	protected String getAuthenticationDatabaseName() {
+		return null;
+	}
+
 	/**
 	 * Return the {@link Mongo} instance to connect to. Annotate with {@link Bean} in case you want to expose a
 	 * {@link Mongo} instance to the {@link org.springframework.context.ApplicationContext}.
@@ -89,14 +102,7 @@ public abstract class AbstractMongoConfiguration {
 	 */
 	@Bean
 	public SimpleMongoDbFactory mongoDbFactory() throws Exception {
-
-		UserCredentials credentials = getUserCredentials();
-
-		if (credentials == null) {
-			return new SimpleMongoDbFactory(mongo(), getDatabaseName());
-		} else {
-			return new SimpleMongoDbFactory(mongo(), getDatabaseName(), credentials);
-		}
+		return new SimpleMongoDbFactory(mongo(), getDatabaseName(), getUserCredentials(), getAuthenticationDatabaseName());
 	}

 	/**
@@ -178,8 +184,11 @@ public abstract class AbstractMongoConfiguration {
 	 */
 	@Bean
 	public MappingMongoConverter mappingMongoConverter() throws Exception {
-		MappingMongoConverter converter = new MappingMongoConverter(mongoDbFactory(), mongoMappingContext());
+
+		DbRefResolver dbRefResolver = new DefaultDbRefResolver(mongoDbFactory());
+		MappingMongoConverter converter = new MappingMongoConverter(dbRefResolver, mongoMappingContext());
 		converter.setCustomConversions(customConversions());
+
 		return converter;
 	}

--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/EnableMongoAuditing.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/EnableMongoAuditing.java
@@ -0,0 +1,70 @@
+/*
+ * 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.config;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.springframework.context.annotation.Import;
+import org.springframework.data.auditing.DateTimeProvider;
+import org.springframework.data.domain.AuditorAware;
+
+/**
+ * Annotation to enable auditing in MongoDB via annotation configuration.
+ * 
+ * @author Thomas Darimont
+ * @author Oliver Gierke
+ */
+@Inherited
+@Documented
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.RUNTIME)
+@Import(MongoAuditingRegistrar.class)
+public @interface EnableMongoAuditing {
+
+	/**
+	 * Configures the {@link AuditorAware} bean to be used to lookup the current principal.
+	 * 
+	 * @return
+	 */
+	String auditorAwareRef() default "";
+
+	/**
+	 * Configures whether the creation and modification dates are set. Defaults to {@literal true}.
+	 * 
+	 * @return
+	 */
+	boolean setDates() default true;
+
+	/**
+	 * Configures whether the entity shall be marked as modified on creation. Defaults to {@literal true}.
+	 * 
+	 * @return
+	 */
+	boolean modifyOnCreate() default true;
+
+	/**
+	 * Configures a {@link DateTimeProvider} bean name that allows customizing the {@link org.joda.time.DateTime} to be
+	 * used for setting creation and modification dates.
+	 * 
+	 * @return
+	 */
+	String dateTimeProviderRef() default "";
+}
--- 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
@@ -70,6 +70,7 @@ import org.w3c.dom.Element;
 * @author Jon Brisbin
 * @author Oliver Gierke
 * @author Maciej Walkowiak
+ * @author Thomas Darimont
 */
 public class MappingMongoConverterParser implements BeanDefinitionParser {

@@ -105,6 +106,11 @@ public class MappingMongoConverterParser implements BeanDefinitionParser {
 		converterBuilder.addConstructorArgReference(dbFactoryRef);
 		converterBuilder.addConstructorArgReference(ctxRef);

+		String typeMapperRef = element.getAttribute("type-mapper-ref");
+		if (StringUtils.hasText(typeMapperRef)) {
+			converterBuilder.addPropertyReference("typeMapper", typeMapperRef);
+		}
+
 		if (conversionsDefinition != null) {
 			converterBuilder.addPropertyValue("customConversions", conversionsDefinition);
 		}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoAuditingRegistrar.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoAuditingRegistrar.java
@@ -0,0 +1,105 @@
+/*
+ * 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.config;
+
+import java.lang.annotation.Annotation;
+
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.beans.factory.support.BeanDefinitionBuilder;
+import org.springframework.beans.factory.support.BeanDefinitionRegistry;
+import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
+import org.springframework.core.type.AnnotationMetadata;
+import org.springframework.data.auditing.IsNewAwareAuditingHandler;
+import org.springframework.data.auditing.config.AnnotationAuditingConfiguration;
+import org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport;
+import org.springframework.data.mapping.context.MappingContextIsNewStrategyFactory;
+import org.springframework.data.mongodb.core.mapping.event.AuditingEventListener;
+import org.springframework.data.support.IsNewStrategyFactory;
+import org.springframework.util.Assert;
+
+/**
+ * {@link ImportBeanDefinitionRegistrar} to enable {@link EnableMongoAuditing} annotation.
+ * 
+ * @author Thomas Darimont
+ * @author Oliver Gierke
+ */
+class MongoAuditingRegistrar extends AuditingBeanDefinitionRegistrarSupport {
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#getAnnotation()
+	 */
+	@Override
+	protected Class<? extends Annotation> getAnnotation() {
+		return EnableMongoAuditing.class;
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#registerBeanDefinitions(org.springframework.core.type.AnnotationMetadata, org.springframework.beans.factory.support.BeanDefinitionRegistry)
+	 */
+	@Override
+	public void registerBeanDefinitions(AnnotationMetadata annotationMetadata, BeanDefinitionRegistry registry) {
+
+		Assert.notNull(annotationMetadata, "AnnotationMetadata must not be null!");
+		Assert.notNull(registry, "BeanDefinitionRegistry must not be null!");
+
+		registerIsNewStrategyFactoryIfNecessary(registry);
+		super.registerBeanDefinitions(annotationMetadata, registry);
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#getAuditHandlerBeanDefinitionBuilder(org.springframework.data.auditing.config.AnnotationAuditingConfiguration)
+	 */
+	@Override
+	protected BeanDefinitionBuilder getAuditHandlerBeanDefinitionBuilder(AnnotationAuditingConfiguration configuration) {
+
+		Assert.notNull(configuration, "AnnotationAuditingConfiguration must not be null!");
+
+		return configureDefaultAuditHandlerAttributes(configuration,
+				BeanDefinitionBuilder.rootBeanDefinition(IsNewAwareAuditingHandler.class)).addConstructorArgReference(
+				BeanNames.IS_NEW_STRATEGY_FACTORY);
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#registerAuditListener(org.springframework.beans.factory.config.BeanDefinition, org.springframework.beans.factory.support.BeanDefinitionRegistry)
+	 */
+	@Override
+	protected void registerAuditListenerBeanDefinition(BeanDefinition auditingHandlerDefinition,
+			BeanDefinitionRegistry registry) {
+
+		Assert.notNull(auditingHandlerDefinition, "BeanDefinition must not be null!");
+		Assert.notNull(registry, "BeanDefinitionRegistry must not be null!");
+
+		registerInfrastructureBeanWithId(BeanDefinitionBuilder.rootBeanDefinition(AuditingEventListener.class)
+				.addConstructorArgValue(auditingHandlerDefinition).getRawBeanDefinition(),
+				AuditingEventListener.class.getName(), registry);
+	}
+
+	/**
+	 * @param registry, the {@link BeanDefinitionRegistry} to use to register an {@link IsNewStrategyFactory} to.
+	 */
+	private void registerIsNewStrategyFactoryIfNecessary(BeanDefinitionRegistry registry) {
+
+		if (!registry.containsBeanDefinition(BeanNames.IS_NEW_STRATEGY_FACTORY)) {
+			registry.registerBeanDefinition(BeanNames.IS_NEW_STRATEGY_FACTORY,
+					BeanDefinitionBuilder.rootBeanDefinition(MappingContextIsNewStrategyFactory.class)
+							.addConstructorArgReference(BeanNames.MAPPING_CONTEXT).getBeanDefinition());
+		}
+	}
+}
--- 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 2011-2012 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.
@@ -41,6 +41,7 @@ import com.mongodb.MongoURI;
 * 
 * @author Jon Brisbin
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public class MongoDbFactoryParser extends AbstractBeanDefinitionParser {

@@ -70,6 +71,7 @@ public class MongoDbFactoryParser extends AbstractBeanDefinitionParser {
 		String uri = element.getAttribute("uri");
 		String mongoRef = element.getAttribute("mongo-ref");
 		String dbname = element.getAttribute("dbname");
+
 		BeanDefinition userCredentials = getUserCredentialsBeanDefinition(element, parserContext);

 		// Common setup
@@ -92,12 +94,9 @@ public class MongoDbFactoryParser extends AbstractBeanDefinitionParser {
 			dbFactoryBuilder.addConstructorArgValue(registerMongoBeanDefinition(element, parserContext));
 		}

-		dbname = StringUtils.hasText(dbname) ? dbname : "db";
-		dbFactoryBuilder.addConstructorArgValue(dbname);
-
-		if (userCredentials != null) {
-			dbFactoryBuilder.addConstructorArgValue(userCredentials);
-		}
+		dbFactoryBuilder.addConstructorArgValue(StringUtils.hasText(dbname) ? dbname : "db");
+		dbFactoryBuilder.addConstructorArgValue(userCredentials);
+		dbFactoryBuilder.addConstructorArgValue(element.getAttribute("authentication-dbname"));

 		BeanDefinitionBuilder writeConcernPropertyEditorBuilder = getWriteConcernPropertyEditorBuilder();

--- 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
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2012 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.
@@ -33,6 +33,7 @@ import org.w3c.dom.Element;
 * 
 * @author Mark Pollack
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 abstract class MongoParsingUtils {

@@ -79,6 +80,8 @@ abstract class MongoParsingUtils {
 		setPropertyValue(optionsDefBuilder, optionsElement, "write-timeout", "writeTimeout");
 		setPropertyValue(optionsDefBuilder, optionsElement, "write-fsync", "writeFsync");
 		setPropertyValue(optionsDefBuilder, optionsElement, "slave-ok", "slaveOk");
+		setPropertyValue(optionsDefBuilder, optionsElement, "ssl", "ssl");
+		setPropertyReference(optionsDefBuilder, optionsElement, "ssl-socket-factory-ref", "sslSocketFactory");

 		mongoBuilder.addPropertyValue("mongoOptions", optionsDefBuilder.getBeanDefinition());
 		return true;
--- 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
@@ -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;

+import static org.springframework.data.domain.Sort.Direction.*;
+
 import java.util.ArrayList;
 import java.util.List;

@@ -22,7 +24,6 @@ import org.springframework.dao.DataAccessException;
 import org.springframework.data.mongodb.core.index.IndexDefinition;
 import org.springframework.data.mongodb.core.index.IndexField;
 import org.springframework.data.mongodb.core.index.IndexInfo;
-import org.springframework.data.mongodb.core.query.Order;
 import org.springframework.util.Assert;

 import com.mongodb.DBCollection;
@@ -34,9 +35,13 @@ import com.mongodb.MongoException;
 * 
 * @author Mark Pollack
 * @author Oliver Gierke
+ * @author Komi Innocent
 */
 public class DefaultIndexOperations implements IndexOperations {

+	private static final Double ONE = Double.valueOf(1);
+	private static final Double MINUS_ONE = Double.valueOf(-1);
+
 	private final MongoOperations mongoOperations;
 	private final String collectionName;

@@ -135,12 +140,17 @@ public class DefaultIndexOperations implements IndexOperations {

 						Object value = keyDbObject.get(key);

-						if (Integer.valueOf(1).equals(value)) {
-							indexFields.add(IndexField.create(key, Order.ASCENDING));
-						} else if (Integer.valueOf(-1).equals(value)) {
-							indexFields.add(IndexField.create(key, Order.DESCENDING));
-						} else if ("2d".equals(value)) {
+						if ("2d".equals(value)) {
 							indexFields.add(IndexField.geo(key));
+						} else {
+
+							Double keyValue = new Double(value.toString());
+
+							if (ONE.equals(keyValue)) {
+								indexFields.add(IndexField.create(key, ASC));
+							} else if (MINUS_ONE.equals(keyValue)) {
+								indexFields.add(IndexField.create(key, DESC));
+							}
 						}
 					}

--- 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 2011-2012 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.
@@ -27,6 +27,7 @@ import com.mongodb.Mongo;
 * Mongo server administration exposed via JMX annotations
 * 
 * @author Mark Pollack
+ * @author Thomas Darimont
 */
@ManagedResource(description = "Mongo Admin Operations")
 public class MongoAdmin implements MongoAdminOperations {
@@ -34,6 +35,7 @@ public class MongoAdmin implements MongoAdminOperations {
 	private final Mongo mongo;
 	private String username;
 	private String password;
+	private String authenticationDatabaseName;

 	public MongoAdmin(Mongo mongo) {
 		Assert.notNull(mongo);
@@ -82,7 +84,16 @@ public class MongoAdmin implements MongoAdminOperations {
 		this.password = password;
 	}

+	/**
+	 * Sets the authenticationDatabaseName to use to authenticate with the Mongo database.
+	 * 
+	 * @param authenticationDatabaseName The authenticationDatabaseName to use.
+	 */
+	public void setAuthenticationDatabaseName(String authenticationDatabaseName) {
+		this.authenticationDatabaseName = authenticationDatabaseName;
+	}
+
 	DB getDB(String databaseName) {
-		return MongoDbUtils.getDB(mongo, databaseName, new UserCredentials(username, password));
+		return MongoDbUtils.getDB(mongo, databaseName, new UserCredentials(username, password), authenticationDatabaseName);
 	}
 }
--- 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.
@@ -26,14 +26,14 @@ 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
+ * @author Thomas Darimont
 * @since 1.0
 */
 public abstract class MongoDbUtils {
@@ -55,7 +55,7 @@ public abstract class MongoDbUtils {
 	 * @return the {@link DB} connection
 	 */
 	public static DB getDB(Mongo mongo, String databaseName) {
-		return doGetDB(mongo, databaseName, UserCredentials.NO_CREDENTIALS, true);
+		return doGetDB(mongo, databaseName, UserCredentials.NO_CREDENTIALS, true, databaseName);
 	}

 	/**
@@ -67,15 +67,22 @@ public abstract class MongoDbUtils {
 	 * @return the {@link DB} connection
 	 */
 	public static DB getDB(Mongo mongo, String databaseName, UserCredentials credentials) {
+		return getDB(mongo, databaseName, credentials, databaseName);
+	}
+
+	public static DB getDB(Mongo mongo, String databaseName, UserCredentials credentials,
+			String authenticationDatabaseName) {

 		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!");
+		Assert.hasText(authenticationDatabaseName, "Authentication database name must not be null or empty!");

-		return doGetDB(mongo, databaseName, credentials, true);
+		return doGetDB(mongo, databaseName, credentials, true, authenticationDatabaseName);
 	}

-	private static DB doGetDB(Mongo mongo, String databaseName, UserCredentials credentials, boolean allowCreate) {
+	private static DB doGetDB(Mongo mongo, String databaseName, UserCredentials credentials, boolean allowCreate,
+			String authenticationDatabaseName) {

 		DbHolder dbHolder = (DbHolder) TransactionSynchronizationManager.getResource(mongo);

@@ -104,14 +111,16 @@ public abstract class MongoDbUtils {
 		DB db = mongo.getDB(databaseName);
 		boolean credentialsGiven = credentials.hasUsername() && credentials.hasPassword();

-		synchronized (db) {
+		DB authDb = databaseName.equals(authenticationDatabaseName) ? db : mongo.getDB(authenticationDatabaseName);

-			if (credentialsGiven && !db.isAuthenticated()) {
+		synchronized (authDb) {
+
+			if (credentialsGiven && !authDb.isAuthenticated()) {

 				String username = credentials.getUsername();
 				String password = credentials.hasPassword() ? credentials.getPassword() : null;

-				if (!db.authenticate(username, password == null ? null : password.toCharArray())) {
+				if (!authDb.authenticate(username, password == null ? null : password.toCharArray())) {
 					throw new CannotGetMongoDbConnectionException("Failed to authenticate to database [" + databaseName + "], "
 							+ credentials.toString(), databaseName, credentials);
 				}
@@ -131,8 +140,11 @@ public abstract class MongoDbUtils {
 				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);
--- 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
@@ -49,6 +49,7 @@ import com.mongodb.WriteResult;
 * @author Mark Pollack
 * @author Oliver Gierke
 * @author Tobias Trelle
+ * @author Chuong Ngo
 */
 public interface MongoOperations {

@@ -703,6 +704,18 @@ public interface MongoOperations {
 	 */
 	WriteResult upsert(Query query, Update update, String collectionName);

+	/**
+	 * Performs an upsert. If no document is found that matches the query, a new document is created and inserted by
+	 * combining the query document and the update document.
+	 * 
+	 * @param query the query document that specifies the criteria used to select a record to be upserted
+	 * @param update the update document that contains the updated object or $ operators to manipulate the existing object
+	 * @param entityClass class of the pojo to be operated on
+	 * @param collectionName name of the collection to update the object in
+	 * @return the WriteResult which lets you access the results of the previous write.
+	 */
+	WriteResult upsert(Query query, Update update, Class<?> entityClass, String collectionName);
+
 	/**
 	 * Updates the first object that is found in the collection of the entity class that matches the query document with
 	 * the provided update document.
@@ -727,6 +740,19 @@ public interface MongoOperations {
 	 */
 	WriteResult updateFirst(Query query, Update update, String collectionName);

+	/**
+	 * Updates the first object that is found in the specified collection that matches the query document criteria with
+	 * the provided updated document.
+	 * 
+	 * @param query the query document that specifies the criteria used to select a record to be updated
+	 * @param update the update document that contains the updated object or $ operators to manipulate the existing
+	 *          object.
+	 * @param entityClass class of the pojo to be operated on
+	 * @param collectionName name of the collection to update the object in
+	 * @return the WriteResult which lets you access the results of the previous write.
+	 */
+	WriteResult updateFirst(Query query, Update update, Class<?> entityClass, String collectionName);
+
 	/**
 	 * Updates all objects that are found in the collection for the entity class that matches the query document criteria
 	 * with the provided updated document.
@@ -751,6 +777,19 @@ public interface MongoOperations {
 	 */
 	WriteResult updateMulti(Query query, Update update, String collectionName);

+	/**
+	 * Updates all objects that are found in the collection for the entity class that matches the query document criteria
+	 * with the provided updated document.
+	 * 
+	 * @param query the query document that specifies the criteria used to select a record to be updated
+	 * @param update the update document that contains the updated object or $ operators to manipulate the existing
+	 *          object.
+	 * @param entityClass class of the pojo to be operated on
+	 * @param collectionName name of the collection to update the object in
+	 * @return the WriteResult which lets you access the results of the previous write.
+	 */
+	WriteResult updateMulti(final Query query, final Update update, Class<?> entityClass, String collectionName);
+
 	/**
 	 * Remove the given object from the collection by id.
 	 * 
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoOptionsFactoryBean.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoOptionsFactoryBean.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.
@@ -15,129 +15,91 @@
 */
 package org.springframework.data.mongodb.core;

-import com.mongodb.MongoOptions;
+import javax.net.ssl.SSLSocketFactory;

 import org.springframework.beans.factory.FactoryBean;
 import org.springframework.beans.factory.InitializingBean;

+import com.mongodb.MongoOptions;
+
 /**
- * A factory bean for construction of a MongoOptions instance
+ * A factory bean for construction of a {@link MongoOptions} instance.
 * 
 * @author Graeme Rocher
- * @Author Mark Pollack
+ * @author Mark Pollack
+ * @author Mike Saavedra
+ * @author Thomas Darimont
 */
 public class MongoOptionsFactoryBean implements FactoryBean<MongoOptions>, InitializingBean {

-	private static final MongoOptions MONGO_OPTIONS = new MongoOptions();
-	/**
-	 * number of connections allowed per host will block if run out
-	 */
+	@SuppressWarnings("deprecation")//
+	private final MongoOptions MONGO_OPTIONS = new MongoOptions();
+
 	private int connectionsPerHost = MONGO_OPTIONS.connectionsPerHost;

-	/**
-	 * multiplier for connectionsPerHost for # of threads that can block if connectionsPerHost is 10, and
-	 * threadsAllowedToBlockForConnectionMultiplier is 5, then 50 threads can block more than that and an exception will
-	 * be throw
-	 */
 	private int threadsAllowedToBlockForConnectionMultiplier = MONGO_OPTIONS.threadsAllowedToBlockForConnectionMultiplier;
-
-	/**
-	 * max wait time of a blocking thread for a connection
-	 */
 	private int maxWaitTime = MONGO_OPTIONS.maxWaitTime;
-
-	/**
-	 * connect timeout in milliseconds. 0 is default and infinite
-	 */
 	private int connectTimeout = MONGO_OPTIONS.connectTimeout;
-
-	/**
-	 * socket timeout. 0 is default and infinite
-	 */
 	private int socketTimeout = MONGO_OPTIONS.socketTimeout;
-
-	/**
-	 * This controls whether or not to have socket keep alive turned on (SO_KEEPALIVE).
-	 * 
-	 * defaults to false
-	 */
-	public boolean socketKeepAlive = MONGO_OPTIONS.socketKeepAlive;
-
-	/**
-	 * this controls whether or not on a connect, the system retries automatically
-	 */
+	private boolean socketKeepAlive = MONGO_OPTIONS.socketKeepAlive;
 	private boolean autoConnectRetry = MONGO_OPTIONS.autoConnectRetry;
-
 	private long maxAutoConnectRetryTime = MONGO_OPTIONS.maxAutoConnectRetryTime;
-
-	/**
-	 * This specifies the number of servers to wait for on the write operation, and exception raising behavior.
-	 * 
-	 * Defaults to 0.
-	 */
 	private int writeNumber;
-
-	/**
-	 * This controls timeout for write operations in milliseconds.
-	 * 
-	 * Defaults to 0 (indefinite). Greater than zero is number of milliseconds to wait.
-	 */
 	private int writeTimeout;
-
-	/**
-	 * This controls whether or not to fsync.
-	 * 
-	 * Defaults to false.
-	 */
 	private boolean writeFsync;
+	@SuppressWarnings("deprecation") private boolean slaveOk = MONGO_OPTIONS.slaveOk;
+	private boolean ssl;
+	private SSLSocketFactory sslSocketFactory;

 	/**
-	 * Specifies if the driver is allowed to read from secondaries or slaves.
+	 * Configures the maximum number of connections allowed per host until we will block.
 	 * 
-	 * Defaults to false
-	 */
-	@SuppressWarnings("deprecation")
-	private boolean slaveOk = MONGO_OPTIONS.slaveOk;
-
-	/**
-	 * number of connections allowed per host will block if run out
+	 * @param connectionsPerHost
 	 */
 	public void setConnectionsPerHost(int connectionsPerHost) {
 		this.connectionsPerHost = connectionsPerHost;
 	}

 	/**
-	 * multiplier for connectionsPerHost for # of threads that can block if connectionsPerHost is 10, and
-	 * threadsAllowedToBlockForConnectionMultiplier is 5, then 50 threads can block more than that and an exception will
-	 * be throw
+	 * A multiplier for connectionsPerHost for # of threads that can block a connection. If connectionsPerHost is 10, and
+	 * threadsAllowedToBlockForConnectionMultiplier is 5, then 50 threads can block. If more threads try to block an
+	 * exception will be thrown.
+	 * 
+	 * @param threadsAllowedToBlockForConnectionMultiplier
 	 */
 	public void setThreadsAllowedToBlockForConnectionMultiplier(int threadsAllowedToBlockForConnectionMultiplier) {
 		this.threadsAllowedToBlockForConnectionMultiplier = threadsAllowedToBlockForConnectionMultiplier;
 	}

 	/**
-	 * max wait time of a blocking thread for a connection
+	 * Max wait time of a blocking thread for a connection.
+	 * 
+	 * @param maxWaitTime
 	 */
 	public void setMaxWaitTime(int maxWaitTime) {
 		this.maxWaitTime = maxWaitTime;
 	}

 	/**
-	 * connect timeout in milliseconds. 0 is default and infinite
+	 * Configures the connect timeout in milliseconds. Defaults to 0 (infinite time).
+	 * 
+	 * @param connectTimeout
 	 */
 	public void setConnectTimeout(int connectTimeout) {
 		this.connectTimeout = connectTimeout;
 	}

 	/**
-	 * socket timeout. 0 is default and infinite
+	 * Configures the socket timeout. Defaults to 0 (infinite time).
+	 * 
+	 * @param socketTimeout
 	 */
 	public void setSocketTimeout(int socketTimeout) {
 		this.socketTimeout = socketTimeout;
 	}

 	/**
-	 * This controls whether or not to have socket keep alive
+	 * Configures whether or not to have socket keep alive turned on (SO_KEEPALIVE). Defaults to {@literal false}.
 	 * 
 	 * @param socketKeepAlive
 	 */
@@ -152,7 +114,7 @@ public class MongoOptionsFactoryBean implements FactoryBean<MongoOptions>, Initi
 	 * <li>-1 = don't even report network errors</li>
 	 * <li>0 = default, don't call getLastError by default</li>
 	 * <li>1 = basic, call getLastError, but don't wait for slaves</li>
-	 * <li>2+= wait for slaves</li>
+	 * <li>2 += wait for slaves</li>
 	 * </ul>
 	 * 
 	 * @param writeNumber the number of servers to wait for on the write operation, and exception raising behavior.
@@ -162,33 +124,33 @@ public class MongoOptionsFactoryBean implements FactoryBean<MongoOptions>, Initi
 	}

 	/**
-	 * This controls timeout for write operations in milliseconds. The 'wtimeout' option to the getlasterror command.
+	 * Configures the timeout for write operations in milliseconds. This defaults to {@literal 0} (indefinite).
 	 * 
-	 * @param writeTimeout Defaults to 0 (indefinite). Greater than zero is number of milliseconds to wait.
+	 * @param writeTimeout
 	 */
 	public void setWriteTimeout(int writeTimeout) {
 		this.writeTimeout = writeTimeout;
 	}

 	/**
-	 * This controls whether or not to fsync. The 'fsync' option to the getlasterror command. Defaults to false.
+	 * Configures whether or not to fsync. The 'fsync' option to the getlasterror command. Defaults to {@literal false}.
 	 * 
-	 * @param writeFsync to fsync on write (true), otherwise false.
+	 * @param writeFsync to fsync on <code>write (true)<code>, otherwise {@literal false}.
 	 */
 	public void setWriteFsync(boolean writeFsync) {
 		this.writeFsync = writeFsync;
 	}

 	/**
-	 * this controls whether or not on a connect, the system retries automatically
+	 * Configures whether or not the system retries automatically on a failed connect. This defaults to {@literal false}.
 	 */
 	public void setAutoConnectRetry(boolean autoConnectRetry) {
 		this.autoConnectRetry = autoConnectRetry;
 	}

 	/**
-	 * The maximum amount of time in millisecons to spend retrying to open connection to the same server. Default is 0,
-	 * which means to use the default 15s if autoConnectRetry is on.
+	 * Configures the maximum amount of time in millisecons to spend retrying to open connection to the same server. This
+	 * defaults to {@literal 0}, which means to use the default {@literal 15s} if {@link #autoConnectRetry} is on.
 	 * 
 	 * @param maxAutoConnectRetryTime the maxAutoConnectRetryTime to set
 	 */
@@ -197,7 +159,7 @@ public class MongoOptionsFactoryBean implements FactoryBean<MongoOptions>, Initi
 	}

 	/**
-	 * Specifies if the driver is allowed to read from secondaries or slaves. Defaults to false.
+	 * Specifies if the driver is allowed to read from secondaries or slaves. Defaults to {@literal false}.
 	 * 
 	 * @param slaveOk true if the driver should read from secondaries or slaves.
 	 */
@@ -205,8 +167,39 @@ public class MongoOptionsFactoryBean implements FactoryBean<MongoOptions>, Initi
 		this.slaveOk = slaveOk;
 	}

+	/**
+	 * Specifies if the driver should use an SSL connection to Mongo. This defaults to {@literal false}. By default
+	 * {@link SSLSocketFactory#getDefault()} will be used. See {@link #setSslSocketFactory(SSLSocketFactory)} if you want
+	 * to configure a custom factory.
+	 * 
+	 * @param ssl true if the driver should use an SSL connection.
+	 * @see #setSslSocketFactory(SSLSocketFactory)
+	 */
+	public void setSsl(boolean ssl) {
+		this.ssl = ssl;
+	}
+
+	/**
+	 * Specifies the {@link SSLSocketFactory} to use for creating SSL connections to Mongo. Defaults to
+	 * {@link SSLSocketFactory#getDefault()}. Implicitly activates {@link #setSsl(boolean)} if a non-{@literal null} value
+	 * is given.
+	 * 
+	 * @param sslSocketFactory the sslSocketFactory to use.
+	 * @see #setSsl(boolean)
+	 */
+	public void setSslSocketFactory(SSLSocketFactory sslSocketFactory) {
+
+		setSsl(sslSocketFactory != null);
+		this.sslSocketFactory = sslSocketFactory;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
+	 */
 	@SuppressWarnings("deprecation")
 	public void afterPropertiesSet() {
+
 		MONGO_OPTIONS.connectionsPerHost = connectionsPerHost;
 		MONGO_OPTIONS.threadsAllowedToBlockForConnectionMultiplier = threadsAllowedToBlockForConnectionMultiplier;
 		MONGO_OPTIONS.maxWaitTime = maxWaitTime;
@@ -219,18 +212,32 @@ public class MongoOptionsFactoryBean implements FactoryBean<MongoOptions>, Initi
 		MONGO_OPTIONS.w = writeNumber;
 		MONGO_OPTIONS.wtimeout = writeTimeout;
 		MONGO_OPTIONS.fsync = writeFsync;
+		if (ssl) {
+			MONGO_OPTIONS.setSocketFactory(sslSocketFactory != null ? sslSocketFactory : SSLSocketFactory.getDefault());
+		}
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.FactoryBean#getObject()
+	 */
 	public MongoOptions getObject() {
 		return MONGO_OPTIONS;
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.FactoryBean#getObjectType()
+	 */
 	public Class<?> getObjectType() {
 		return MongoOptions.class;
 	}

+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.FactoryBean#isSingleton()
+	 */
 	public boolean isSingleton() {
 		return true;
 	}
-
 }
--- 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
@@ -46,6 +46,7 @@ import org.springframework.core.io.ResourceLoader;
 import org.springframework.dao.DataAccessException;
 import org.springframework.dao.InvalidDataAccessApiUsageException;
 import org.springframework.dao.OptimisticLockingFailureException;
+import org.springframework.dao.support.PersistenceExceptionTranslator;
 import org.springframework.data.authentication.UserCredentials;
 import org.springframework.data.convert.EntityReader;
 import org.springframework.data.mapping.PersistentEntity;
@@ -59,6 +60,8 @@ import org.springframework.data.mongodb.core.aggregation.AggregationResults;
 import org.springframework.data.mongodb.core.aggregation.Fields;
 import org.springframework.data.mongodb.core.aggregation.TypeBasedAggregationOperationContext;
 import org.springframework.data.mongodb.core.aggregation.TypedAggregation;
+import org.springframework.data.mongodb.core.convert.DbRefResolver;
+import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver;
 import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
 import org.springframework.data.mongodb.core.convert.MongoConverter;
 import org.springframework.data.mongodb.core.convert.MongoWriter;
@@ -123,6 +126,7 @@ import com.mongodb.util.JSONParseException;
 * @author Tobias Trelle
 * @author Sebastian Herold
 * @author Thomas Darimont
+ * @author Chuong Ngo
 */
 public class MongoTemplate implements MongoOperations, ApplicationContextAware {

@@ -144,7 +148,7 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {
 	private final MongoConverter mongoConverter;
 	private final MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext;
 	private final MongoDbFactory mongoDbFactory;
-	private final MongoExceptionTranslator exceptionTranslator = new MongoExceptionTranslator();
+	private final PersistenceExceptionTranslator exceptionTranslator;
 	private final QueryMapper queryMapper;
 	private final UpdateMapper updateMapper;

@@ -198,6 +202,7 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {
 		Assert.notNull(mongoDbFactory);

 		this.mongoDbFactory = mongoDbFactory;
+		this.exceptionTranslator = mongoDbFactory.getExceptionTranslator();
 		this.mongoConverter = mongoConverter == null ? getDefaultMongoConverter(mongoDbFactory) : mongoConverter;
 		this.queryMapper = new QueryMapper(this.mongoConverter);
 		this.updateMapper = new UpdateMapper(this.mongoConverter);
@@ -565,8 +570,26 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {
 				mongoConverter, entityClass), near.getMetric());
 		List<GeoResult<T>> result = new ArrayList<GeoResult<T>>(results.size());

+		int index = 0;
+		int elementsToSkip = near.getSkip() != null ? near.getSkip() : 0;
+
 		for (Object element : results) {
-			result.add(callback.doWith((DBObject) element));
+
+			/*
+			 * As MongoDB currently (2.4.4) doesn't support the skipping of elements in near queries
+			 * we skip the elements ourselves to avoid at least the document 2 object mapping overhead.
+			 * 
+			 * @see https://jira.mongodb.org/browse/SERVER-3925
+			 */
+			if (index >= elementsToSkip) {
+				result.add(callback.doWith((DBObject) element));
+			}
+			index++;
+		}
+
+		if (elementsToSkip > 0) {
+			// as we skipped some elements we have to calculate the averageDistance ourselves:
+			return new GeoResults<T>(result, near.getMetric());
 		}

 		DBObject stats = (DBObject) commandResult.get("stats");
@@ -681,10 +704,9 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {

 		initializeVersionProperty(objectToSave);

-		BasicDBObject dbDoc = new BasicDBObject();
-
 		maybeEmitEvent(new BeforeConvertEvent<T>(objectToSave));
-		writer.write(objectToSave, dbDoc);
+
+		DBObject dbDoc = toDbObject(objectToSave, writer);

 		maybeEmitEvent(new BeforeSaveEvent<T>(objectToSave, dbDoc));
 		Object id = insertDBObject(collectionName, dbDoc, objectToSave.getClass());
@@ -693,6 +715,26 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {
 		maybeEmitEvent(new AfterSaveEvent<T>(objectToSave, dbDoc));
 	}

+	/**
+	 * @param objectToSave
+	 * @param writer
+	 * @return
+	 */
+	private <T> DBObject toDbObject(T objectToSave, MongoWriter<T> writer) {
+
+		if (!(objectToSave instanceof String)) {
+			DBObject dbDoc = new BasicDBObject();
+			writer.write(objectToSave, dbDoc);
+			return dbDoc;
+		} else {
+			try {
+				return (DBObject) JSON.parse((String) objectToSave);
+			} catch (JSONParseException e) {
+				throw new MappingException("Could not parse given String to save into a JSON document!", e);
+			}
+		}
+	}
+
 	private void initializeVersionProperty(Object entity) {

 		MongoPersistentEntity<?> mongoPersistentEntity = getPersistentEntity(entity.getClass());
@@ -832,19 +874,9 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {

 		assertUpdateableIdIfNotSet(objectToSave);

-		DBObject dbDoc = new BasicDBObject();
-
 		maybeEmitEvent(new BeforeConvertEvent<T>(objectToSave));

-		if (!(objectToSave instanceof String)) {
-			writer.write(objectToSave, dbDoc);
-		} else {
-			try {
-				dbDoc = (DBObject) JSON.parse((String) objectToSave);
-			} catch (JSONParseException e) {
-				throw new MappingException("Could not parse given String to save into a JSON document!", e);
-			}
-		}
+		DBObject dbDoc = toDbObject(objectToSave, writer);

 		maybeEmitEvent(new BeforeSaveEvent<T>(objectToSave, dbDoc));
 		Object id = saveDBObject(collectionName, dbDoc, objectToSave.getClass());
@@ -928,6 +960,10 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {
 		return doUpdate(collectionName, query, update, null, true, false);
 	}

+	public WriteResult upsert(Query query, Update update, Class<?> entityClass, String collectionName) {
+		return doUpdate(collectionName, query, update, entityClass, true, false);
+	}
+
 	public WriteResult updateFirst(Query query, Update update, Class<?> entityClass) {
 		return doUpdate(determineCollectionName(entityClass), query, update, entityClass, false, false);
 	}
@@ -936,6 +972,10 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {
 		return doUpdate(collectionName, query, update, null, false, false);
 	}

+	public WriteResult updateFirst(Query query, Update update, Class<?> entityClass, String collectionName) {
+		return doUpdate(collectionName, query, update, entityClass, false, false);
+	}
+
 	public WriteResult updateMulti(Query query, Update update, Class<?> entityClass) {
 		return doUpdate(determineCollectionName(entityClass), query, update, entityClass, false, true);
 	}
@@ -944,6 +984,10 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {
 		return doUpdate(collectionName, query, update, null, false, true);
 	}

+	public WriteResult updateMulti(final Query query, final Update update, Class<?> entityClass, String collectionName) {
+		return doUpdate(collectionName, query, update, entityClass, false, true);
+	}
+
 	protected WriteResult doUpdate(final String collectionName, final Query query, final Update update,
 			final Class<?> entityClass, final boolean upsert, final boolean multi) {

@@ -1783,7 +1827,9 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {
 	}

 	private static final MongoConverter getDefaultMongoConverter(MongoDbFactory factory) {
-		MappingMongoConverter converter = new MappingMongoConverter(factory, new MongoMappingContext());
+
+		DbRefResolver dbRefResolver = new DefaultDbRefResolver(factory);
+		MappingMongoConverter converter = new MappingMongoConverter(dbRefResolver, new MongoMappingContext());
 		converter.afterPropertiesSet();
 		return converter;
 	}
--- 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 2011-2012 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.
@@ -19,9 +19,11 @@ import java.net.UnknownHostException;

 import org.springframework.beans.factory.DisposableBean;
 import org.springframework.dao.DataAccessException;
+import org.springframework.dao.support.PersistenceExceptionTranslator;
 import org.springframework.data.authentication.UserCredentials;
 import org.springframework.data.mongodb.MongoDbFactory;
 import org.springframework.util.Assert;
+import org.springframework.util.StringUtils;

 import com.mongodb.DB;
 import com.mongodb.Mongo;
@@ -34,6 +36,7 @@ import com.mongodb.WriteConcern;
 * 
 * @author Mark Pollack
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public class SimpleMongoDbFactory implements DisposableBean, MongoDbFactory {

@@ -41,6 +44,9 @@ public class SimpleMongoDbFactory implements DisposableBean, MongoDbFactory {
 	private final String databaseName;
 	private final boolean mongoInstanceCreated;
 	private final UserCredentials credentials;
+	private final PersistenceExceptionTranslator exceptionTranslator;
+	private final String authenticationDatabaseName;
+
 	private WriteConcern writeConcern;

 	/**
@@ -50,7 +56,7 @@ public class SimpleMongoDbFactory implements DisposableBean, MongoDbFactory {
 	 * @param databaseName database name, not be {@literal null} or empty.
 	 */
 	public SimpleMongoDbFactory(Mongo mongo, String databaseName) {
-		this(mongo, databaseName, UserCredentials.NO_CREDENTIALS, false);
+		this(mongo, databaseName, null);
 	}

 	/**
@@ -61,7 +67,20 @@ public class SimpleMongoDbFactory implements DisposableBean, MongoDbFactory {
 	 * @param credentials username and password.
 	 */
 	public SimpleMongoDbFactory(Mongo mongo, String databaseName, UserCredentials credentials) {
-		this(mongo, databaseName, credentials, false);
+		this(mongo, databaseName, credentials, false, null);
+	}
+
+	/**
+	 * 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} or empty.
+	 * @param credentials username and password.
+	 * @param authenticationDatabaseName the database name to use for authentication
+	 */
+	public SimpleMongoDbFactory(Mongo mongo, String databaseName, UserCredentials credentials,
+			String authenticationDatabaseName) {
+		this(mongo, databaseName, credentials, false, authenticationDatabaseName);
 	}

 	/**
@@ -72,12 +91,14 @@ public class SimpleMongoDbFactory implements DisposableBean, MongoDbFactory {
 	 * @throws UnknownHostException
 	 * @see MongoURI
 	 */
+	@SuppressWarnings("deprecation")
 	public SimpleMongoDbFactory(MongoURI uri) throws MongoException, UnknownHostException {
-		this(new Mongo(uri), uri.getDatabase(), new UserCredentials(uri.getUsername(), parseChars(uri.getPassword())), true);
+		this(new Mongo(uri), uri.getDatabase(), new UserCredentials(uri.getUsername(), parseChars(uri.getPassword())),
+				true, uri.getDatabase());
 	}

 	private SimpleMongoDbFactory(Mongo mongo, String databaseName, UserCredentials credentials,
-			boolean mongoInstanceCreated) {
+			boolean mongoInstanceCreated, String authenticationDatabaseName) {

 		Assert.notNull(mongo, "Mongo must not be null");
 		Assert.hasText(databaseName, "Database name must not be empty");
@@ -88,6 +109,12 @@ public class SimpleMongoDbFactory implements DisposableBean, MongoDbFactory {
 		this.databaseName = databaseName;
 		this.mongoInstanceCreated = mongoInstanceCreated;
 		this.credentials = credentials == null ? UserCredentials.NO_CREDENTIALS : credentials;
+		this.exceptionTranslator = new MongoExceptionTranslator();
+		this.authenticationDatabaseName = StringUtils.hasText(authenticationDatabaseName) ? authenticationDatabaseName
+				: databaseName;
+
+		Assert.isTrue(this.authenticationDatabaseName.matches("[\\w-]+"),
+				"Authentication database name must only contain letters, numbers, underscores and dashes!");
 	}

 	/**
@@ -115,7 +142,7 @@ public class SimpleMongoDbFactory implements DisposableBean, MongoDbFactory {

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

-		DB db = MongoDbUtils.getDB(mongo, dbName, credentials);
+		DB db = MongoDbUtils.getDB(mongo, dbName, credentials, authenticationDatabaseName);

 		if (writeConcern != null) {
 			db.setWriteConcern(writeConcern);
@@ -138,4 +165,13 @@ public class SimpleMongoDbFactory implements DisposableBean, MongoDbFactory {
 	private static String parseChars(char[] chars) {
 		return chars == null ? null : String.valueOf(chars);
 	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.MongoDbFactory#getExceptionTranslator()
+	 */
+	@Override
+	public PersistenceExceptionTranslator getExceptionTranslator() {
+		return this.exceptionTranslator;
+	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/Aggregation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/Aggregation.java
@@ -48,6 +48,15 @@ public class Aggregation {

 	private final List<AggregationOperation> operations;

+	/**
+	 * Creates a new {@link Aggregation} from the given {@link AggregationOperation}s.
+	 * 
+	 * @param operations must not be {@literal null} or empty.
+	 */
+	public static Aggregation newAggregation(List<? extends AggregationOperation> operations) {
+		return newAggregation(operations.toArray(new AggregationOperation[operations.size()]));
+	}
+
 	/**
 	 * Creates a new {@link Aggregation} from the given {@link AggregationOperation}s.
 	 * 
@@ -57,6 +66,16 @@ public class Aggregation {
 		return new Aggregation(operations);
 	}

+	/**
+	 * Creates a new {@link TypedAggregation} for the given type and {@link AggregationOperation}s.
+	 * 
+	 * @param type must not be {@literal null}.
+	 * @param operations must not be {@literal null} or empty.
+	 */
+	public static <T> TypedAggregation<T> newAggregation(Class<T> type, List<? extends AggregationOperation> operations) {
+		return newAggregation(type, operations.toArray(new AggregationOperation[operations.size()]));
+	}
+
 	/**
 	 * Creates a new {@link TypedAggregation} for the given type and {@link AggregationOperation}s.
 	 * 
@@ -227,8 +246,9 @@ public class Aggregation {

 			operationDocuments.add(operation.toDBObject(context));

-			if (operation instanceof AggregationOperationContext) {
-				context = (AggregationOperationContext) operation;
+			if (operation instanceof FieldsExposingAggregationOperation) {
+				FieldsExposingAggregationOperation exposedFieldsOperation = (FieldsExposingAggregationOperation) operation;
+				context = new ExposedFieldsAggregationOperationContext(exposedFieldsOperation.getFields());
 			}
 		}

--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/AggregationExpressionTransformer.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/AggregationExpressionTransformer.java
@@ -0,0 +1,82 @@
+/*
+ * 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.core.aggregation;
+
+import org.springframework.data.mongodb.core.aggregation.AggregationExpressionTransformer.AggregationExpressionTransformationContext;
+import org.springframework.data.mongodb.core.aggregation.ExposedFields.FieldReference;
+import org.springframework.data.mongodb.core.spel.ExpressionNode;
+import org.springframework.data.mongodb.core.spel.ExpressionTransformationContextSupport;
+import org.springframework.data.mongodb.core.spel.ExpressionTransformer;
+import org.springframework.util.Assert;
+
+import com.mongodb.DBObject;
+
+/**
+ * Interface to type an {@link ExpressionTransformer} to the contained
+ * {@link AggregationExpressionTransformationContext}.
+ * 
+ * @author Oliver Gierke
+ */
+interface AggregationExpressionTransformer extends
+		ExpressionTransformer<AggregationExpressionTransformationContext<ExpressionNode>> {
+
+	/**
+	 * A special {@link ExpressionTransformationContextSupport} to be aware of the {@link AggregationOperationContext}.
+	 * 
+	 * @author Oliver Gierke
+	 * @author Thomas Darimont
+	 */
+	public static class AggregationExpressionTransformationContext<T extends ExpressionNode> extends
+			ExpressionTransformationContextSupport<T> {
+
+		private final AggregationOperationContext aggregationContext;
+
+		/**
+		 * Creates an {@link AggregationExpressionTransformationContext}.
+		 * 
+		 * @param currentNode must not be {@literal null}.
+		 * @param parentNode
+		 * @param previousOperationObject
+		 * @param aggregationContext must not be {@literal null}.
+		 */
+		public AggregationExpressionTransformationContext(T currentNode, ExpressionNode parentNode,
+				DBObject previousOperationObject, AggregationOperationContext context) {
+
+			super(currentNode, parentNode, previousOperationObject);
+
+			Assert.notNull(context, "AggregationOperationContext must not be null!");
+			this.aggregationContext = context;
+		}
+
+		/**
+		 * Returns the underlying {@link AggregationOperationContext}.
+		 * 
+		 * @return
+		 */
+		public AggregationOperationContext getAggregationContext() {
+			return aggregationContext;
+		}
+
+		/**
+		 * Returns the {@link FieldReference} for the current {@link ExpressionNode}.
+		 * 
+		 * @return
+		 */
+		public FieldReference getFieldReference() {
+			return aggregationContext.getReference(getCurrentNode().getName());
+		}
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/ExposedFields.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/ExposedFields.java
@@ -29,6 +29,7 @@ import org.springframework.util.CompositeIterator;
 * Value object to capture the fields exposed by an {@link AggregationOperation}.
 * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 * @since 1.3
 */
 public class ExposedFields implements Iterable<ExposedField> {
@@ -151,13 +152,47 @@ public class ExposedFields implements Iterable<ExposedField> {
 		return null;
 	}

+	/**
+	 * Returns whether the {@link ExposedFields} exposes no non-synthetic fields at all.
+	 * 
+	 * @return
+	 */
+	boolean exposesNoNonSyntheticFields() {
+		return originalFields.isEmpty();
+	}
+
+	/**
+	 * Returns whether the {@link ExposedFields} exposes a single non-synthetic field only.
+	 * 
+	 * @return
+	 */
+	boolean exposesSingleNonSyntheticFieldOnly() {
+		return originalFields.size() == 1;
+	}
+
+	/**
+	 * Returns whether the {@link ExposedFields} exposes no fields at all.
+	 * 
+	 * @return
+	 */
+	boolean exposesNoFields() {
+		return exposedFieldsCount() == 0;
+	}
+
 	/**
 	 * Returns whether the {@link ExposedFields} exposes a single field only.
 	 * 
 	 * @return
 	 */
-	public boolean exposesSingleFieldOnly() {
-		return originalFields.size() + syntheticFields.size() == 1;
+	boolean exposesSingleFieldOnly() {
+		return exposedFieldsCount() == 1;
+	}
+
+	/**
+	 * @return
+	 */
+	private int exposedFieldsCount() {
+		return originalFields.size() + syntheticFields.size();
 	}

 	/* 
@@ -224,6 +259,15 @@ public class ExposedFields implements Iterable<ExposedField> {
 			return field.getTarget();
 		}

+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.Field#isAliased()
+		 */
+		@Override
+		public boolean isAliased() {
+			return field.isAliased();
+		}
+
 		/**
 		 * Returns whether the field can be referred to using the given name.
 		 * 
@@ -242,6 +286,41 @@ public class ExposedFields implements Iterable<ExposedField> {
 		public String toString() {
 			return String.format("AggregationField: %s, synthetic: %s", field, synthetic);
 		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see java.lang.Object#equals(java.lang.Object)
+		 */
+		@Override
+		public boolean equals(Object obj) {
+
+			if (this == obj) {
+				return true;
+			}
+
+			if (!(obj instanceof ExposedField)) {
+				return false;
+			}
+
+			ExposedField that = (ExposedField) obj;
+
+			return this.field.equals(that.field) && this.synthetic == that.synthetic;
+		}
+
+		/*
+		 * (non-Javadoc)
+		 * @see java.lang.Object#hashCode()
+		 */
+		@Override
+		public int hashCode() {
+
+			int result = 17;
+
+			result += 31 * field.hashCode();
+			result += 31 * (synthetic ? 0 : 1);
+
+			return result;
+		}
 	}

 	/**
@@ -264,12 +343,20 @@ public class ExposedFields implements Iterable<ExposedField> {
 			this.field = field;
 		}

+		/**
+		 * @return
+		 */
+		public boolean isSynthetic() {
+			return field.synthetic;
+		}
+
 		/**
 		 * Returns the raw, unqualified reference, i.e. the field reference without a {@literal $} prefix.
 		 * 
 		 * @return
 		 */
 		public String getRaw() {
+
 			String target = field.getTarget();
 			return field.synthetic ? target : String.format("%s.%s", Fields.UNDERSCORE_ID, target);
 		}
@@ -282,5 +369,34 @@ public class ExposedFields implements Iterable<ExposedField> {
 		public String toString() {
 			return String.format("$%s", getRaw());
 		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see java.lang.Object#equals(java.lang.Object)
+		 */
+		@Override
+		public boolean equals(Object obj) {
+
+			if (this == obj) {
+				return true;
+			}
+
+			if (!(obj instanceof FieldReference)) {
+				return false;
+			}
+
+			FieldReference that = (FieldReference) obj;
+
+			return this.field.equals(that.field);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see java.lang.Object#hashCode()
+		 */
+		@Override
+		public int hashCode() {
+			return field.hashCode();
+		}
 	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/ExposedFieldsAggregationOperationContext.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/ExposedFieldsAggregationOperationContext.java
@@ -17,17 +17,32 @@ package org.springframework.data.mongodb.core.aggregation;

 import org.springframework.data.mongodb.core.aggregation.ExposedFields.ExposedField;
 import org.springframework.data.mongodb.core.aggregation.ExposedFields.FieldReference;
+import org.springframework.util.Assert;

 import com.mongodb.DBObject;

 /**
- * Support class to implement {@link AggregationOperation}s that will become an {@link AggregationOperationContext} as
- * well defining {@link ExposedFields}.
+ * {@link AggregationOperationContext} that combines the available field references from a given
+ * {@code AggregationOperationContext} and an {@link FieldsExposingAggregationOperation}.
 * 
+ * @author Thomas Darimont
 * @author Oliver Gierke
- * @since 1.3
+ * @since 1.4
 */
-public abstract class ExposedFieldsAggregationOperationContext implements AggregationOperationContext {
+class ExposedFieldsAggregationOperationContext implements AggregationOperationContext {
+
+	private final ExposedFields exposedFields;
+
+	/**
+	 * Creates a new {@link ExposedFieldsAggregationOperationContext} from the given {@link ExposedFields}.
+	 * 
+	 * @param exposedFields must not be {@literal null}.
+	 */
+	public ExposedFieldsAggregationOperationContext(ExposedFields exposedFields) {
+
+		Assert.notNull(exposedFields, "ExposedFields must not be null!");
+		this.exposedFields = exposedFields;
+	}

 	/* 
 	 * (non-Javadoc)
@@ -44,7 +59,7 @@ public abstract class ExposedFieldsAggregationOperationContext implements Aggreg
 	 */
 	@Override
 	public FieldReference getReference(Field field) {
-		return getReference(field.getName());
+		return getReference(field.getTarget());
 	}

 	/* 
@@ -54,7 +69,7 @@ public abstract class ExposedFieldsAggregationOperationContext implements Aggreg
 	@Override
 	public FieldReference getReference(String name) {

-		ExposedField field = getFields().getField(name);
+		ExposedField field = exposedFields.getField(name);

 		if (field != null) {
 			return new FieldReference(field);
@@ -62,6 +77,4 @@ public abstract class ExposedFieldsAggregationOperationContext implements Aggreg

 		throw new IllegalArgumentException(String.format("Invalid reference '%s'!", name));
 	}
-
-	protected abstract ExposedFields getFields();
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/Field.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/Field.java
@@ -36,4 +36,11 @@ public interface Field {
 	 * @return must not be {@literal null}.
 	 */
 	String getTarget();
+
+	/**
+	 * Returns whether the Field is aliased, which means it has a name set different from the target.
+	 * 
+	 * @return
+	 */
+	boolean isAliased();
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/Fields.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/Fields.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Map;

 import org.springframework.util.Assert;
+import org.springframework.util.ObjectUtils;
 import org.springframework.util.StringUtils;

 /**
@@ -196,17 +197,30 @@ public class Fields implements Iterable<Field> {

 		public AggregationField(String name, String target) {

-			Assert.hasText(name, "AggregationField name must not be null or empty!");
+			String nameToSet = cleanUp(name);
+			String targetToSet = cleanUp(target);
+
+			Assert.hasText(nameToSet, "AggregationField name must not be null or empty!");

 			if (target == null && name.contains(".")) {
-				this.name = name.substring(name.indexOf(".") + 1);
-				this.target = name;
+				this.name = nameToSet.substring(nameToSet.indexOf(".") + 1);
+				this.target = nameToSet;
 			} else {
-				this.name = name;
-				this.target = target;
+				this.name = nameToSet;
+				this.target = targetToSet;
 			}
 		}

+		private static final String cleanUp(String source) {
+
+			if (source == null) {
+				return source;
+			}
+
+			int dollarIndex = source.lastIndexOf('$');
+			return dollarIndex == -1 ? source : source.substring(dollarIndex + 1);
+		}
+
 		/*
 		 * (non-Javadoc)
 		 * @see org.springframework.data.mongodb.core.aggregation.Field#getKey()
@@ -223,6 +237,15 @@ public class Fields implements Iterable<Field> {
 			return StringUtils.hasText(this.target) ? this.target : this.name;
 		}

+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.Field#isAliased()
+		 */
+		@Override
+		public boolean isAliased() {
+			return !getName().equals(getTarget());
+		}
+
 		/* 
 		 * (non-Javadoc)
 		 * @see java.lang.Object#toString()
@@ -231,5 +254,40 @@ public class Fields implements Iterable<Field> {
 		public String toString() {
 			return String.format("AggregationField - name: %s, target: %s", name, target);
 		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see java.lang.Object#equals(java.lang.Object)
+		 */
+		@Override
+		public boolean equals(Object obj) {
+
+			if (this == obj) {
+				return true;
+			}
+
+			if (!(obj instanceof AggregationField)) {
+				return false;
+			}
+
+			AggregationField that = (AggregationField) obj;
+
+			return this.name.equals(that.name) && ObjectUtils.nullSafeEquals(this.target, that.target);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see java.lang.Object#hashCode()
+		 */
+		@Override
+		public int hashCode() {
+
+			int result = 17;
+
+			result += 31 * name.hashCode();
+			result += 31 * ObjectUtils.nullSafeHashCode(target);
+
+			return result;
+		}
 	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/FieldsExposingAggregationOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/FieldsExposingAggregationOperation.java
@@ -0,0 +1,32 @@
+/*
+ * 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.core.aggregation;
+
+/**
+ * {@link AggregationOperation} that exposes new {@link ExposedFields} that can be used for later aggregation pipeline
+ * {@code AggregationOperation}s.
+ * 
+ * @author Thomas Darimont
+ */
+public interface FieldsExposingAggregationOperation extends AggregationOperation {
+
+	/**
+	 * Returns the fields exposed by the {@link AggregationOperation}.
+	 * 
+	 * @return will never be {@literal null}.
+	 */
+	ExposedFields getFields();
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/GroupOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/GroupOperation.java
@@ -38,9 +38,13 @@ import com.mongodb.DBObject;
 * @author Oliver Gierke
 * @since 1.3
 */
-public class GroupOperation extends ExposedFieldsAggregationOperationContext implements AggregationOperation {
+public class GroupOperation implements FieldsExposingAggregationOperation {
+
+	/**
+	 * Holds the non-synthetic fields which are the fields of the group-id structure.
+	 */
+	private final ExposedFields idFields;

-	private final ExposedFields nonSynthecticFields;
 	private final List<Operation> operations;

 	/**
@@ -50,7 +54,7 @@ public class GroupOperation extends ExposedFieldsAggregationOperationContext imp
 	 */
 	public GroupOperation(Fields fields) {

-		this.nonSynthecticFields = ExposedFields.nonSynthetic(fields);
+		this.idFields = ExposedFields.nonSynthetic(fields);
 		this.operations = new ArrayList<Operation>();
 	}

@@ -74,7 +78,7 @@ public class GroupOperation extends ExposedFieldsAggregationOperationContext imp
 		Assert.notNull(groupOperation, "GroupOperation must not be null!");
 		Assert.notNull(nextOperations, "NextOperations must not be null!");

-		this.nonSynthecticFields = groupOperation.nonSynthecticFields;
+		this.idFields = groupOperation.idFields;
 		this.operations = new ArrayList<Operation>(nextOperations.size() + 1);
 		this.operations.addAll(groupOperation.operations);
 		this.operations.addAll(nextOperations);
@@ -261,7 +265,7 @@ public class GroupOperation extends ExposedFieldsAggregationOperationContext imp
 	@Override
 	public ExposedFields getFields() {

-		ExposedFields fields = this.nonSynthecticFields.and(new ExposedField(Fields.UNDERSCORE_ID, true));
+		ExposedFields fields = this.idFields.and(new ExposedField(Fields.UNDERSCORE_ID, true));

 		for (Operation operation : operations) {
 			fields = fields.and(operation.asField());
@@ -279,16 +283,20 @@ public class GroupOperation extends ExposedFieldsAggregationOperationContext imp

 		BasicDBObject operationObject = new BasicDBObject();

-		if (nonSynthecticFields.exposesSingleFieldOnly()) {
+		if (idFields.exposesNoNonSyntheticFields()) {

-			FieldReference reference = context.getReference(nonSynthecticFields.iterator().next());
+			operationObject.put(Fields.UNDERSCORE_ID, null);
+
+		} else if (idFields.exposesSingleNonSyntheticFieldOnly()) {
+
+			FieldReference reference = context.getReference(idFields.iterator().next());
 			operationObject.put(Fields.UNDERSCORE_ID, reference.toString());

 		} else {

 			BasicDBObject inner = new BasicDBObject();

-			for (ExposedField field : nonSynthecticFields) {
+			for (ExposedField field : idFields) {
 				FieldReference reference = context.getReference(field);
 				inner.put(field.getName(), reference.toString());
 			}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/ProjectionOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/ProjectionOperation.java
@@ -41,9 +41,11 @@ import com.mongodb.DBObject;
 * @author Oliver Gierke
 * @since 1.3
 */
-public class ProjectionOperation extends ExposedFieldsAggregationOperationContext implements AggregationOperation {
+public class ProjectionOperation implements FieldsExposingAggregationOperation {

 	private static final List<Projection> NONE = Collections.emptyList();
+	private static final String EXCLUSION_ERROR = "Exclusion of field %s not allowed. Projections by the mongodb "
+			+ "aggregation framework only support the exclusion of the %s field!";

 	private final List<Projection> projections;

@@ -60,7 +62,7 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 	 * @param fields must not be {@literal null}.
 	 */
 	public ProjectionOperation(Fields fields) {
-		this(NONE, ProjectionOperationBuilder.FieldProjection.from(fields, true));
+		this(NONE, ProjectionOperationBuilder.FieldProjection.from(fields));
 	}

 	/**
@@ -114,26 +116,36 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 		return new ProjectionOperationBuilder(name, this, null);
 	}

+	public ExpressionProjectionOperationBuilder andExpression(String expression, Object... params) {
+		return new ExpressionProjectionOperationBuilder(expression, this, params);
+	}
+
 	/**
 	 * Excludes the given fields from the projection.
 	 * 
-	 * @param fields must not be {@literal null}.
+	 * @param fieldNames must not be {@literal null}.
 	 * @return
 	 */
-	public ProjectionOperation andExclude(String... fields) {
-		List<FieldProjection> excludeProjections = FieldProjection.from(Fields.fields(fields), false);
+	public ProjectionOperation andExclude(String... fieldNames) {
+
+		for (String fieldName : fieldNames) {
+			Assert.isTrue(Fields.UNDERSCORE_ID.equals(fieldName),
+					String.format(EXCLUSION_ERROR, fieldName, Fields.UNDERSCORE_ID));
+		}
+
+		List<FieldProjection> excludeProjections = FieldProjection.from(Fields.fields(fieldNames), false);
 		return new ProjectionOperation(this.projections, excludeProjections);
 	}

 	/**
 	 * Includes the given fields into the projection.
 	 * 
-	 * @param fields must not be {@literal null}.
+	 * @param fieldNames must not be {@literal null}.
 	 * @return
 	 */
-	public ProjectionOperation andInclude(String... fields) {
+	public ProjectionOperation andInclude(String... fieldNames) {

-		List<FieldProjection> projections = FieldProjection.from(Fields.fields(fields), true);
+		List<FieldProjection> projections = FieldProjection.from(Fields.fields(fieldNames), true);
 		return new ProjectionOperation(this.projections, projections);
 	}

@@ -147,12 +159,12 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 		return new ProjectionOperation(this.projections, FieldProjection.from(fields, true));
 	}

-	/* 
+	/*
 	 * (non-Javadoc)
-	 * @see org.springframework.data.mongodb.core.aggregation.ExposedFieldsAggregationOperationContext#getFields()
+	 * @see org.springframework.data.mongodb.core.aggregation.FieldsExposingAggregationOperation#getFields()
 	 */
 	@Override
-	protected ExposedFields getFields() {
+	public ExposedFields getFields() {

 		ExposedFields fields = null;

@@ -180,12 +192,130 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 		return new BasicDBObject("$project", fieldObject);
 	}

+	/**
+	 * Base class for {@link ProjectionOperationBuilder}s.
+	 * 
+	 * @author Thomas Darimont
+	 */
+	private static abstract class AbstractProjectionOperationBuilder implements AggregationOperation {
+
+		protected final Object value;
+		protected final ProjectionOperation operation;
+
+		/**
+		 * Creates a new {@link AbstractProjectionOperationBuilder} fot the given value and {@link ProjectionOperation}.
+		 * 
+		 * @param value must not be {@literal null}.
+		 * @param operation must not be {@literal null}.
+		 */
+		public AbstractProjectionOperationBuilder(Object value, ProjectionOperation operation) {
+
+			Assert.notNull(value, "value must not be null or empty!");
+			Assert.notNull(operation, "ProjectionOperation must not be null!");
+
+			this.value = value;
+			this.operation = operation;
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.AggregationOperation#toDBObject(org.springframework.data.mongodb.core.aggregation.AggregationOperationContext)
+		 */
+		@Override
+		public DBObject toDBObject(AggregationOperationContext context) {
+			return this.operation.toDBObject(context);
+		}
+
+		/**
+		 * Returns the finally to be applied {@link ProjectionOperation} with the given alias.
+		 * 
+		 * @param alias will never be {@literal null} or empty.
+		 * @return
+		 */
+		public abstract ProjectionOperation as(String alias);
+	}
+
+	/**
+	 * @author Thomas Darimont
+	 */
+	public static class ExpressionProjectionOperationBuilder extends AbstractProjectionOperationBuilder {
+
+		private final Object[] params;
+
+		/**
+		 * Creates a new {@link ExpressionProjectionOperationBuilder} for the given value, {@link ProjectionOperation} and
+		 * parameters.
+		 * 
+		 * @param value must not be {@literal null}.
+		 * @param operation must not be {@literal null}.
+		 * @param parameters
+		 */
+		public ExpressionProjectionOperationBuilder(Object value, ProjectionOperation operation, Object[] parameters) {
+
+			super(value, operation);
+			this.params = parameters;
+		}
+
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.ProjectionOperation.AbstractProjectionOperationBuilder#as(java.lang.String)
+		 */
+		@Override
+		public ProjectionOperation as(String alias) {
+
+			Field expressionField = Fields.field(alias, "expr");
+			return this.operation.and(new ExpressionProjection(expressionField, this.value.toString(), params));
+		}
+
+		/**
+		 * A {@link Projection} based on a SpEL expression.
+		 * 
+		 * @author Thomas Darimont
+		 * @author Oliver Gierke
+		 */
+		static class ExpressionProjection extends Projection {
+
+			private static final SpelExpressionTransformer TRANSFORMER = new SpelExpressionTransformer();
+
+			private final String expression;
+			private final Object[] params;
+
+			/**
+			 * Creates a new {@link ExpressionProjection} for the given field, SpEL expression and parameters.
+			 * 
+			 * @param field must not be {@literal null}.
+			 * @param expression must not be {@literal null} or empty.
+			 * @param parameters must not be {@literal null}.
+			 */
+			public ExpressionProjection(Field field, String expression, Object[] parameters) {
+
+				super(field);
+
+				Assert.hasText(expression, "Expression must not be null!");
+				Assert.notNull(parameters, "Parameters must not be null!");
+
+				this.expression = expression;
+				this.params = parameters;
+			}
+
+			/* 
+			 * (non-Javadoc)
+			 * @see org.springframework.data.mongodb.core.aggregation.ProjectionOperation.Projection#toDBObject(org.springframework.data.mongodb.core.aggregation.AggregationOperationContext)
+			 */
+			@Override
+			public DBObject toDBObject(AggregationOperationContext context) {
+				return new BasicDBObject(getExposedField().getName(), TRANSFORMER.transform(expression, context, params));
+			}
+		}
+	}
+
 	/**
 	 * Builder for {@link ProjectionOperation}s on a field.
 	 * 
 	 * @author Oliver Gierke
+	 * @author Thomas Darimont
 	 */
-	public static class ProjectionOperationBuilder implements AggregationOperation {
+	public static class ProjectionOperationBuilder extends AbstractProjectionOperationBuilder {

 		private final String name;
 		private final ProjectionOperation operation;
@@ -200,9 +330,7 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 		 * @param previousProjection the previous operation projection, may be {@literal null}.
 		 */
 		public ProjectionOperationBuilder(String name, ProjectionOperation operation, OperationProjection previousProjection) {
-
-			Assert.hasText(name, "Field name must not be null or empty!");
-			Assert.notNull(operation, "ProjectionOperation must not be null!");
+			super(name, operation);

 			this.name = name;
 			this.operation = operation;
@@ -237,10 +365,11 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 		 * @param string
 		 * @return
 		 */
+		@Override
 		public ProjectionOperation as(String alias) {

-			if (previousProjection != null) {
-				return this.operation.andReplaceLastOneWith(previousProjection.withAlias(alias));
+			if (this.previousProjection != null) {
+				return this.operation.andReplaceLastOneWith(this.previousProjection.withAlias(alias));
 			} else {
 				return this.operation.and(new FieldProjection(Fields.field(alias, name), null));
 			}
@@ -258,6 +387,18 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 			return project("add", number);
 		}

+		/**
+		 * Generates an {@code $add} expression that adds the value of the given field to the previously mentioned field.
+		 * 
+		 * @param fieldReference
+		 * @return
+		 */
+		public ProjectionOperationBuilder plus(String fieldReference) {
+
+			Assert.notNull(fieldReference, "Field reference must not be null!");
+			return project("add", Fields.field(fieldReference));
+		}
+
 		/**
 		 * Generates an {@code $subtract} expression that subtracts the given number to the previously mentioned field.
 		 * 
@@ -270,6 +411,19 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 			return project("subtract", number);
 		}

+		/**
+		 * Generates an {@code $subtract} expression that subtracts the value of the given field to the previously mentioned
+		 * field.
+		 * 
+		 * @param fieldReference
+		 * @return
+		 */
+		public ProjectionOperationBuilder minus(String fieldReference) {
+
+			Assert.notNull(fieldReference, "Field reference must not be null!");
+			return project("subtract", Fields.field(fieldReference));
+		}
+
 		/**
 		 * Generates an {@code $multiply} expression that multiplies the given number with the previously mentioned field.
 		 * 
@@ -282,6 +436,19 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 			return project("multiply", number);
 		}

+		/**
+		 * Generates an {@code $multiply} expression that multiplies the value of the given field with the previously
+		 * mentioned field.
+		 * 
+		 * @param fieldReference
+		 * @return
+		 */
+		public ProjectionOperationBuilder multiply(String fieldReference) {
+
+			Assert.notNull(fieldReference, "Field reference must not be null!");
+			return project("multiply", Fields.field(fieldReference));
+		}
+
 		/**
 		 * Generates an {@code $divide} expression that divides the previously mentioned field by the given number.
 		 * 
@@ -295,6 +462,19 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 			return project("divide", number);
 		}

+		/**
+		 * Generates an {@code $divide} expression that divides the value of the given field by the previously mentioned
+		 * field.
+		 * 
+		 * @param fieldReference
+		 * @return
+		 */
+		public ProjectionOperationBuilder divide(String fieldReference) {
+
+			Assert.notNull(fieldReference, "Field reference must not be null!");
+			return project("divide", Fields.field(fieldReference));
+		}
+
 		/**
 		 * Generates an {@code $mod} expression that divides the previously mentioned field by the given number and returns
 		 * the remainder.
@@ -309,7 +489,21 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 			return project("mod", number);
 		}

-		/* (non-Javadoc)
+		/**
+		 * Generates an {@code $mod} expression that divides the value of the given field by the previously mentioned field
+		 * and returns the remainder.
+		 * 
+		 * @param fieldReference
+		 * @return
+		 */
+		public ProjectionOperationBuilder mod(String fieldReference) {
+
+			Assert.notNull(fieldReference, "Field reference must not be null!");
+			return project("mod", Fields.field(fieldReference));
+		}
+
+		/* 
+		 * (non-Javadoc)
 		 * @see org.springframework.data.mongodb.core.aggregation.AggregationOperation#toDBObject(org.springframework.data.mongodb.core.aggregation.AggregationOperationContext)
 		 */
 		@Override
@@ -362,6 +556,7 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 		 * A {@link FieldProjection} to map a result of a previous {@link AggregationOperation} to a new field.
 		 * 
 		 * @author Oliver Gierke
+		 * @author Thomas Darimont
 		 */
 		static class FieldProjection extends Projection {

@@ -386,20 +581,31 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 				this.value = value;
 			}

+			/**
+			 * Factory method to easily create {@link FieldProjection}s for the given {@link Fields}. Fields are projected as
+			 * references with their given name. A field {@code foo} will be projected as: {@code foo : 1 } .
+			 * 
+			 * @param fields the {@link Fields} to in- or exclude, must not be {@literal null}.
+			 * @return
+			 */
+			public static List<? extends Projection> from(Fields fields) {
+				return from(fields, null);
+			}
+
 			/**
 			 * Factory method to easily create {@link FieldProjection}s for the given {@link Fields}.
 			 * 
 			 * @param fields the {@link Fields} to in- or exclude, must not be {@literal null}.
-			 * @param include whether to include or exclude the fields.
+			 * @param value to use for the given field.
 			 * @return
 			 */
-			public static List<FieldProjection> from(Fields fields, boolean include) {
+			public static List<FieldProjection> from(Fields fields, Object value) {

 				Assert.notNull(fields, "Fields must not be null!");
 				List<FieldProjection> projections = new ArrayList<FieldProjection>();

 				for (Field field : fields) {
-					projections.add(new FieldProjection(field, include ? null : 0));
+					projections.add(new FieldProjection(field, value));
 				}

 				return projections;
@@ -411,13 +617,25 @@ public class ProjectionOperation extends ExposedFieldsAggregationOperationContex
 			 */
 			@Override
 			public DBObject toDBObject(AggregationOperationContext context) {
+				return new BasicDBObject(field.getName(), renderFieldValue(context));
+			}

-				if (value != null) {
-					return new BasicDBObject(field.getName(), value);
+			private Object renderFieldValue(AggregationOperationContext context) {
+
+				// implicit reference or explicit include?
+				if (value == null || Boolean.TRUE.equals(value)) {
+
+					// check whether referenced field exists in the context
+					FieldReference reference = context.getReference(field.getTarget());
+					return reference.isSynthetic() && !field.isAliased() ? 1 : reference.toString();
+
+				} else if (Boolean.FALSE.equals(value)) {
+
+					// render field as excluded
+					return 0;
 				}

-				FieldReference reference = context.getReference(field.getTarget());
-				return new BasicDBObject(field.getName(), reference.toString());
+				return value;
 			}
 		}

--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/SpelExpressionTransformer.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/SpelExpressionTransformer.java
@@ -0,0 +1,513 @@
+/*
+ * 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.core.aggregation;
+
+import static org.springframework.data.mongodb.util.DBObjectUtils.*;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.springframework.core.GenericTypeResolver;
+import org.springframework.data.mongodb.core.spel.ExpressionNode;
+import org.springframework.data.mongodb.core.spel.ExpressionTransformationContextSupport;
+import org.springframework.data.mongodb.core.spel.LiteralNode;
+import org.springframework.data.mongodb.core.spel.MethodReferenceNode;
+import org.springframework.data.mongodb.core.spel.OperatorNode;
+import org.springframework.expression.spel.ExpressionState;
+import org.springframework.expression.spel.SpelNode;
+import org.springframework.expression.spel.SpelParserConfiguration;
+import org.springframework.expression.spel.ast.CompoundExpression;
+import org.springframework.expression.spel.ast.Indexer;
+import org.springframework.expression.spel.ast.InlineList;
+import org.springframework.expression.spel.ast.PropertyOrFieldReference;
+import org.springframework.expression.spel.standard.SpelExpression;
+import org.springframework.expression.spel.standard.SpelExpressionParser;
+import org.springframework.expression.spel.support.StandardEvaluationContext;
+import org.springframework.util.Assert;
+import org.springframework.util.NumberUtils;
+
+import com.mongodb.BasicDBList;
+import com.mongodb.BasicDBObject;
+import com.mongodb.DBObject;
+
+/**
+ * Renders the AST of a SpEL expression as a MongoDB Aggregation Framework projection expression.
+ * 
+ * @author Thomas Darimont
+ */
+class SpelExpressionTransformer implements AggregationExpressionTransformer {
+
+	// TODO: remove explicit usage of a configuration once SPR-11031 gets fixed
+	private static final SpelParserConfiguration CONFIG = new SpelParserConfiguration(false, false);
+	private static final SpelExpressionParser PARSER = new SpelExpressionParser(CONFIG);
+	private final List<ExpressionNodeConversion<? extends ExpressionNode>> conversions;
+
+	/**
+	 * Creates a new {@link SpelExpressionTransformer}.
+	 */
+	public SpelExpressionTransformer() {
+
+		List<ExpressionNodeConversion<? extends ExpressionNode>> conversions = new ArrayList<ExpressionNodeConversion<? extends ExpressionNode>>();
+		conversions.add(new OperatorNodeConversion(this));
+		conversions.add(new LiteralNodeConversion(this));
+		conversions.add(new IndexerNodeConversion(this));
+		conversions.add(new InlineListNodeConversion(this));
+		conversions.add(new PropertyOrFieldReferenceNodeConversion(this));
+		conversions.add(new CompoundExpressionNodeConversion(this));
+		conversions.add(new MethodReferenceNodeConversion(this));
+
+		this.conversions = Collections.unmodifiableList(conversions);
+	}
+
+	/**
+	 * Transforms the given SpEL expression to a corresponding MongoDB expression against the given
+	 * {@link AggregationOperationContext} {@code context}.
+	 * <p>
+	 * Exposes the given @{code params} as <code>[0] ... [n]</code>.
+	 * 
+	 * @param expression must not be {@literal null}
+	 * @param context must not be {@literal null}
+	 * @param params must not be {@literal null}
+	 * @return
+	 */
+	public Object transform(String expression, AggregationOperationContext context, Object... params) {
+
+		Assert.notNull(expression, "Expression must not be null!");
+		Assert.notNull(context, "AggregationOperationContext must not be null!");
+		Assert.notNull(params, "Parameters must not be null!");
+
+		SpelExpression spelExpression = (SpelExpression) PARSER.parseExpression(expression);
+		ExpressionState state = new ExpressionState(new StandardEvaluationContext(params), CONFIG);
+		ExpressionNode node = ExpressionNode.from(spelExpression.getAST(), state);
+
+		return transform(new AggregationExpressionTransformationContext<ExpressionNode>(node, null, null, context));
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.spel.ExpressionTransformer#transform(org.springframework.data.mongodb.core.spel.ExpressionTransformationContextSupport)
+	 */
+	public Object transform(AggregationExpressionTransformationContext<ExpressionNode> context) {
+		return lookupConversionFor(context.getCurrentNode()).convert(context);
+	}
+
+	/**
+	 * Returns an appropriate {@link ExpressionNodeConversion} for the given {@code node}. Throws an
+	 * {@link IllegalArgumentException} if no conversion could be found.
+	 * 
+	 * @param node
+	 * @return the appropriate {@link ExpressionNodeConversion} for the given {@link ExpressionNode}.
+	 */
+	@SuppressWarnings("unchecked")
+	private ExpressionNodeConversion<ExpressionNode> lookupConversionFor(ExpressionNode node) {
+
+		for (ExpressionNodeConversion<? extends ExpressionNode> candidate : conversions) {
+			if (candidate.supports(node)) {
+				return (ExpressionNodeConversion<ExpressionNode>) candidate;
+			}
+		}
+
+		throw new IllegalArgumentException("Unsupported Element: " + node + " Type: " + node.getClass()
+				+ " You probably have a syntax error in your SpEL expression!");
+	}
+
+	/**
+	 * Abstract base class for {@link SpelNode} to (Db)-object conversions.
+	 * 
+	 * @author Thomas Darimont
+	 * @author Oliver Gierke
+	 */
+	private static abstract class ExpressionNodeConversion<T extends ExpressionNode> implements
+			AggregationExpressionTransformer {
+
+		private final AggregationExpressionTransformer transformer;
+		private final Class<? extends ExpressionNode> nodeType;
+
+		/**
+		 * Creates a new {@link ExpressionNodeConversion}.
+		 * 
+		 * @param transformer must not be {@literal null}.
+		 */
+		@SuppressWarnings("unchecked")
+		public ExpressionNodeConversion(AggregationExpressionTransformer transformer) {
+
+			Assert.notNull(transformer, "Transformer must not be null!");
+
+			this.nodeType = (Class<? extends ExpressionNode>) GenericTypeResolver.resolveTypeArgument(this.getClass(),
+					ExpressionNodeConversion.class);
+			this.transformer = transformer;
+		}
+
+		/**
+		 * Returns whether the current conversion supports the given {@link ExpressionNode}. By default we will match the
+		 * node type against the genric type the subclass types the type parameter to.
+		 * 
+		 * @param node will never be {@literal null}.
+		 * @return true if {@literal this} conversion can be applied to the given {@code node}.
+		 */
+		protected boolean supports(ExpressionNode node) {
+			return nodeType.equals(node.getClass());
+		}
+
+		/**
+		 * Triggers the transformation for the given {@link ExpressionNode} and the given current context.
+		 * 
+		 * @param node must not be {@literal null}.
+		 * @param context must not be {@literal null}.
+		 * @return
+		 */
+		protected Object transform(ExpressionNode node, AggregationExpressionTransformationContext<?> context) {
+
+			Assert.notNull(node, "ExpressionNode must not be null!");
+			Assert.notNull(context, "AggregationExpressionTransformationContext must not be null!");
+
+			return transform(node, context.getParentNode(), null, context);
+		}
+
+		/**
+		 * Triggers the transformation with the given new {@link ExpressionNode}, new parent node, the current operation and
+		 * the previous context.
+		 * 
+		 * @param node must not be {@literal null}.
+		 * @param parent
+		 * @param operation
+		 * @param context must not be {@literal null}.
+		 * @return
+		 */
+		protected Object transform(ExpressionNode node, ExpressionNode parent, DBObject operation,
+				AggregationExpressionTransformationContext<?> context) {
+
+			Assert.notNull(node, "ExpressionNode must not be null!");
+			Assert.notNull(context, "AggregationExpressionTransformationContext must not be null!");
+
+			return transform(new AggregationExpressionTransformationContext<ExpressionNode>(node, parent, operation,
+					context.getAggregationContext()));
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.NodeConversion#transform(org.springframework.data.mongodb.core.aggregation.AggregationExpressionTransformer.AggregationExpressionTransformationContext)
+		 */
+		@Override
+		public Object transform(AggregationExpressionTransformationContext<ExpressionNode> context) {
+			return transformer.transform(context);
+		}
+
+		/**
+		 * Performs the actual conversion from {@link SpelNode} to the corresponding representation for MongoDB.
+		 * 
+		 * @param context
+		 * @return
+		 */
+		protected abstract Object convert(AggregationExpressionTransformationContext<T> context);
+	}
+
+	/**
+	 * A {@link ExpressionNodeConversion} that converts arithmetic operations.
+	 * 
+	 * @author Thomas Darimont
+	 */
+	private static class OperatorNodeConversion extends ExpressionNodeConversion<OperatorNode> {
+
+		public OperatorNodeConversion(AggregationExpressionTransformer transformer) {
+			super(transformer);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.SpelNodeWrapper#convertSpelNodeToMongoObjectExpression(org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.ExpressionConversionContext)
+		 */
+		@Override
+		protected Object convert(AggregationExpressionTransformationContext<OperatorNode> context) {
+
+			OperatorNode currentNode = context.getCurrentNode();
+
+			DBObject operationObject = createOperationObjectAndAddToPreviousArgumentsIfNecessary(context, currentNode);
+			Object leftResult = transform(currentNode.getLeft(), currentNode, operationObject, context);
+
+			if (currentNode.isUnaryMinus()) {
+				return convertUnaryMinusOp(context, leftResult);
+			}
+
+			// we deliberately ignore the RHS result
+			transform(currentNode.getRight(), currentNode, operationObject, context);
+
+			return operationObject;
+		}
+
+		private DBObject createOperationObjectAndAddToPreviousArgumentsIfNecessary(
+				AggregationExpressionTransformationContext<OperatorNode> context, OperatorNode currentNode) {
+
+			DBObject nextDbObject = new BasicDBObject(currentNode.getMongoOperator(), new BasicDBList());
+
+			if (!context.hasPreviousOperation()) {
+				return nextDbObject;
+			}
+
+			if (context.parentIsSameOperation()) {
+
+				// same operator applied in a row e.g. 1 + 2 + 3 carry on with the operation and render as $add: [1, 2 ,3]
+				nextDbObject = context.getPreviousOperationObject();
+			} else if (!currentNode.isUnaryOperator()) {
+
+				// different operator -> add context object for next level to list if arguments of previous expression
+				context.addToPreviousOperation(nextDbObject);
+			}
+
+			return nextDbObject;
+		}
+
+		private Object convertUnaryMinusOp(ExpressionTransformationContextSupport<OperatorNode> context, Object leftResult) {
+
+			Object result = leftResult instanceof Number ? leftResult
+					: new BasicDBObject("$multiply", dbList(-1, leftResult));
+
+			if (leftResult != null && context.hasPreviousOperation()) {
+				context.addToPreviousOperation(result);
+			}
+
+			return result;
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.SpelNodeWrapper#supports(java.lang.Class)
+		 */
+		@Override
+		protected boolean supports(ExpressionNode node) {
+			return node.isMathematicalOperation();
+		}
+	}
+
+	/**
+	 * A {@link ExpressionNodeConversion} that converts indexed expressions.
+	 * 
+	 * @author Thomas Darimont
+	 * @author Oliver Gierke
+	 */
+	private static class IndexerNodeConversion extends ExpressionNodeConversion<ExpressionNode> {
+
+		public IndexerNodeConversion(AggregationExpressionTransformer transformer) {
+			super(transformer);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.SpelNodeWrapper#convertSpelNodeToMongoObjectExpression(org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.ExpressionConversionContext)
+		 */
+		@Override
+		protected Object convert(AggregationExpressionTransformationContext<ExpressionNode> context) {
+			return context.addToPreviousOrReturn(context.getCurrentNode().getValue());
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.NodeConversion#supports(org.springframework.data.mongodb.core.spel.ExpressionNode)
+		 */
+		@Override
+		protected boolean supports(ExpressionNode node) {
+			return node.isOfType(Indexer.class);
+		}
+	}
+
+	/**
+	 * A {@link ExpressionNodeConversion} that converts in-line list expressions.
+	 * 
+	 * @author Thomas Darimont
+	 */
+	private static class InlineListNodeConversion extends ExpressionNodeConversion<ExpressionNode> {
+
+		public InlineListNodeConversion(AggregationExpressionTransformer transformer) {
+			super(transformer);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.SpelNodeWrapper#convertSpelNodeToMongoObjectExpression(org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.ExpressionConversionContext)
+		 */
+		@Override
+		protected Object convert(AggregationExpressionTransformationContext<ExpressionNode> context) {
+
+			ExpressionNode currentNode = context.getCurrentNode();
+
+			if (!currentNode.hasChildren()) {
+				return null;
+			}
+
+			// just take the first item
+			return transform(currentNode.getChild(0), currentNode, null, context);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.NodeConversion#supports(org.springframework.data.mongodb.core.spel.ExpressionNode)
+		 */
+		@Override
+		protected boolean supports(ExpressionNode node) {
+			return node.isOfType(InlineList.class);
+		}
+	}
+
+	/**
+	 * A {@link ExpressionNodeConversion} that converts property or field reference expressions.
+	 * 
+	 * @author Thomas Darimont
+	 * @author Oliver Gierke
+	 */
+	private static class PropertyOrFieldReferenceNodeConversion extends ExpressionNodeConversion<ExpressionNode> {
+
+		public PropertyOrFieldReferenceNodeConversion(AggregationExpressionTransformer transformer) {
+			super(transformer);
+		}
+
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.NodeConversion#convert(org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.ExpressionTransformationContext)
+		 */
+		@Override
+		protected Object convert(AggregationExpressionTransformationContext<ExpressionNode> context) {
+
+			String fieldReference = context.getFieldReference().toString();
+			return context.addToPreviousOrReturn(fieldReference);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.NodeConversion#supports(org.springframework.data.mongodb.core.spel.ExpressionNode)
+		 */
+		@Override
+		protected boolean supports(ExpressionNode node) {
+			return node.isOfType(PropertyOrFieldReference.class);
+		}
+	}
+
+	/**
+	 * A {@link ExpressionNodeConversion} that converts literal expressions.
+	 * 
+	 * @author Thomas Darimont
+	 * @author Oliver Gierke
+	 */
+	private static class LiteralNodeConversion extends ExpressionNodeConversion<LiteralNode> {
+
+		public LiteralNodeConversion(AggregationExpressionTransformer transformer) {
+			super(transformer);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.SpelNodeWrapper#convertSpelNodeToMongoObjectExpression(org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.ExpressionConversionContext)
+		 */
+		@Override
+		@SuppressWarnings("unchecked")
+		protected Object convert(AggregationExpressionTransformationContext<LiteralNode> context) {
+
+			LiteralNode node = context.getCurrentNode();
+			Object value = node.getValue();
+
+			if (context.hasPreviousOperation()) {
+
+				if (node.isUnaryMinus(context.getParentNode())) {
+					// unary minus operator
+					return NumberUtils.convertNumberToTargetClass(((Number) value).doubleValue() * -1,
+							(Class<Number>) value.getClass()); // retain type, e.g. int to -int
+				}
+
+				return context.addToPreviousOperation(value);
+			}
+
+			return value;
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.SpelNodeWrapper#supports(org.springframework.expression.spel.SpelNode)
+		 */
+		@Override
+		protected boolean supports(ExpressionNode node) {
+			return node.isLiteral();
+		}
+	}
+
+	/**
+	 * A {@link ExpressionNodeConversion} that converts method reference expressions.
+	 * 
+	 * @author Thomas Darimont
+	 * @author Oliver Gierke
+	 */
+	private static class MethodReferenceNodeConversion extends ExpressionNodeConversion<MethodReferenceNode> {
+
+		public MethodReferenceNodeConversion(AggregationExpressionTransformer transformer) {
+			super(transformer);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.SpelNodeWrapper#convertSpelNodeToMongoObjectExpression(org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.ExpressionConversionContext)
+		 */
+		@Override
+		protected Object convert(AggregationExpressionTransformationContext<MethodReferenceNode> context) {
+
+			MethodReferenceNode node = context.getCurrentNode();
+			List<Object> args = new ArrayList<Object>();
+
+			for (ExpressionNode childNode : node) {
+				args.add(transform(childNode, context));
+			}
+
+			return context.addToPreviousOrReturn(new BasicDBObject(node.getMethodName(), dbList(args.toArray())));
+		}
+	}
+
+	/**
+	 * A {@link ExpressionNodeConversion} that converts method compound expressions.
+	 * 
+	 * @author Thomas Darimont
+	 * @author Oliver Gierke
+	 */
+	private static class CompoundExpressionNodeConversion extends ExpressionNodeConversion<ExpressionNode> {
+
+		public CompoundExpressionNodeConversion(AggregationExpressionTransformer transformer) {
+			super(transformer);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.SpelNodeWrapper#convertSpelNodeToMongoObjectExpression(org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.ExpressionConversionContext)
+		 */
+		@Override
+		protected Object convert(AggregationExpressionTransformationContext<ExpressionNode> context) {
+
+			ExpressionNode currentNode = context.getCurrentNode();
+
+			if (currentNode.hasfirstChildNotOfType(Indexer.class)) {
+				// we have a property path expression like: foo.bar -> render as reference
+				return context.getFieldReference().toString();
+			}
+
+			return context.addToPreviousOrReturn(currentNode.getValue());
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.NodeConversion#supports(org.springframework.data.mongodb.core.spel.ExpressionNode)
+		 */
+		@Override
+		protected boolean supports(ExpressionNode node) {
+			return node.isOfType(CompoundExpression.class);
+		}
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/TypeBasedAggregationOperationContext.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/TypeBasedAggregationOperationContext.java
@@ -71,14 +71,14 @@ public class TypeBasedAggregationOperationContext implements AggregationOperatio
 		return mapper.getMappedObject(dbObject, mappingContext.getPersistentEntity(type));
 	}

-	/* 
+	/*
 	 * (non-Javadoc)
-	 * @see org.springframework.data.mongodb.core.aggregation.AggregationOperationContext#getReference(org.springframework.data.mongodb.core.aggregation.ExposedFields.AvailableField)
+	 * @see org.springframework.data.mongodb.core.aggregation.AggregationOperationContext#getReference(org.springframework.data.mongodb.core.aggregation.Field)
 	 */
 	@Override
 	public FieldReference getReference(Field field) {

-		PropertyPath.from(field.getName(), type);
+		PropertyPath.from(field.getTarget(), type);
 		return getReferenceFor(field);
 	}

@@ -88,11 +88,10 @@ public class TypeBasedAggregationOperationContext implements AggregationOperatio
 	 */
 	@Override
 	public FieldReference getReference(String name) {
-		PropertyPath path = PropertyPath.from(name, type);

-		PersistentPropertyPath<MongoPersistentProperty> propertyPath = mappingContext.getPersistentPropertyPath(path);
+		PersistentPropertyPath<MongoPersistentProperty> propertyPath = mappingContext.getPersistentPropertyPath(name, type);

-		return getReferenceFor(field(path.getLeafProperty().getSegment(),
+		return getReferenceFor(field(propertyPath.getLeafProperty().getName(),
 				propertyPath.toDotPath(MongoPersistentProperty.PropertyToFieldNameConverter.INSTANCE)));
 	}

--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/UnwindOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/UnwindOperation.java
@@ -29,7 +29,7 @@ import com.mongodb.DBObject;
 * @author Oliver Gierke
 * @since 1.3
 */
-public class UnwindOperation extends ExposedFieldsAggregationOperationContext implements AggregationOperation {
+public class UnwindOperation implements AggregationOperation {

 	private final ExposedField field;

@@ -44,15 +44,6 @@ public class UnwindOperation extends ExposedFieldsAggregationOperationContext im
 		this.field = new ExposedField(field, true);
 	}

-	/* 
-	 * (non-Javadoc)
-	 * @see org.springframework.data.mongodb.core.aggregation.ExposedFieldsAggregationOperationContext#getFields()
-	 */
-	@Override
-	protected ExposedFields getFields() {
-		return ExposedFields.from(field);
-	}
-
 	/* 
 	 * (non-Javadoc)
 	 * @see org.springframework.data.mongodb.core.aggregation.AggregationOperation#toDBObject(org.springframework.data.mongodb.core.aggregation.AggregationOperationContext)
--- 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
@@ -19,6 +19,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
@@ -39,6 +40,7 @@ import org.springframework.data.convert.WritingConverter;
 import org.springframework.data.mapping.model.SimpleTypeHolder;
 import org.springframework.data.mongodb.core.convert.MongoConverters.BigDecimalToStringConverter;
 import org.springframework.data.mongodb.core.convert.MongoConverters.BigIntegerToStringConverter;
+import org.springframework.data.mongodb.core.convert.MongoConverters.DBObjectToStringConverter;
 import org.springframework.data.mongodb.core.convert.MongoConverters.StringToBigDecimalConverter;
 import org.springframework.data.mongodb.core.convert.MongoConverters.StringToBigIntegerConverter;
 import org.springframework.data.mongodb.core.convert.MongoConverters.StringToURLConverter;
@@ -85,12 +87,13 @@ public class CustomConversions {

 		Assert.notNull(converters);

-		this.readingPairs = new HashSet<ConvertiblePair>();
-		this.writingPairs = new HashSet<ConvertiblePair>();
+		this.readingPairs = new LinkedHashSet<ConvertiblePair>();
+		this.writingPairs = new LinkedHashSet<ConvertiblePair>();
 		this.customSimpleTypes = new HashSet<Class<?>>();
 		this.cache = new HashMap<Class<?>, HashMap<Class<?>, CacheValue>>();

 		this.converters = new ArrayList<Object>();
+		this.converters.addAll(converters);
 		this.converters.add(CustomToStringConverter.INSTANCE);
 		this.converters.add(BigDecimalToStringConverter.INSTANCE);
 		this.converters.add(StringToBigDecimalConverter.INSTANCE);
@@ -98,8 +101,8 @@ public class CustomConversions {
 		this.converters.add(StringToBigIntegerConverter.INSTANCE);
 		this.converters.add(URLToStringConverter.INSTANCE);
 		this.converters.add(StringToURLConverter.INSTANCE);
+		this.converters.add(DBObjectToStringConverter.INSTANCE);
 		this.converters.addAll(JodaTimeConverters.getConvertersToRegister());
-		this.converters.addAll(converters);

 		for (Object c : this.converters) {
 			registerConversion(c);
@@ -237,6 +240,7 @@ public class CustomConversions {
 	 * @return
 	 */
 	public Class<?> getCustomWriteTarget(Class<?> source, Class<?> expectedTargetType) {
+
 		Assert.notNull(source);
 		return getCustomTarget(source, expectedTargetType, writingPairs);
 	}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/DBObjectAccessor.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/DBObjectAccessor.java
@@ -0,0 +1,123 @@
+/*
+ * 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.core.convert;
+
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.Map;
+
+import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
+import org.springframework.util.Assert;
+
+import com.mongodb.BasicDBObject;
+import com.mongodb.DBObject;
+
+/**
+ * Wrapper value object for a {@link BasicDBObject} to be able to access raw values by {@link MongoPersistentProperty}
+ * references. The accessors will transparently resolve nested document values that a {@link MongoPersistentProperty}
+ * might refer to through a path expression in field names.
+ * 
+ * @author Oliver Gierke
+ */
+class DBObjectAccessor {
+
+	private final DBObject dbObject;
+
+	/**
+	 * Creates a new {@link DBObjectAccessor} for the given {@link DBObject}.
+	 * 
+	 * @param dbObject must be a {@link BasicDBObject} effectively, must not be {@literal null}.
+	 */
+	public DBObjectAccessor(DBObject dbObject) {
+
+		Assert.notNull(dbObject, "DBObject must not be null!");
+		Assert.isInstanceOf(BasicDBObject.class, dbObject, "Given DBObject must be a BasicDBObject!");
+
+		this.dbObject = dbObject;
+	}
+
+	/**
+	 * Puts the given value into the backing {@link DBObject} based on the coordinates defined through the given
+	 * {@link MongoPersistentProperty}. By default this will be the plain field name. But field names might also consist
+	 * of path traversals so we might need to create intermediate {@link BasicDBObject}s.
+	 * 
+	 * @param prop must not be {@literal null}.
+	 * @param value
+	 */
+	public void put(MongoPersistentProperty prop, Object value) {
+
+		Assert.notNull(prop, "MongoPersistentProperty must not be null!");
+		String fieldName = prop.getFieldName();
+
+		Iterator<String> parts = Arrays.asList(fieldName.split("\\.")).iterator();
+		DBObject dbObject = this.dbObject;
+
+		while (parts.hasNext()) {
+
+			String part = parts.next();
+
+			if (parts.hasNext()) {
+				BasicDBObject nestedDbObject = new BasicDBObject();
+				dbObject.put(part, nestedDbObject);
+				dbObject = nestedDbObject;
+			} else {
+				dbObject.put(part, value);
+			}
+		}
+	}
+
+	/**
+	 * Returns the value the given {@link MongoPersistentProperty} refers to. By default this will be a direct field but
+	 * the method will also transparently resolve nested values the {@link MongoPersistentProperty} might refer to through
+	 * a path expression in the field name metadata.
+	 * 
+	 * @param property must not be {@literal null}.
+	 * @return
+	 */
+	@SuppressWarnings("unchecked")
+	public Object get(MongoPersistentProperty property) {
+
+		String fieldName = property.getFieldName();
+		Iterator<String> parts = Arrays.asList(fieldName.split("\\.")).iterator();
+		Map<Object, Object> source = this.dbObject.toMap();
+		Object result = null;
+
+		while (source != null && parts.hasNext()) {
+
+			result = source.get(parts.next());
+
+			if (parts.hasNext()) {
+				source = getAsMap(result);
+			}
+		}
+
+		return result;
+	}
+
+	@SuppressWarnings("unchecked")
+	private Map<Object, Object> getAsMap(Object source) {
+
+		if (source instanceof BasicDBObject) {
+			return ((DBObject) source).toMap();
+		}
+
+		if (source instanceof Map) {
+			return (Map<Object, Object>) source;
+		}
+
+		return null;
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/DbRefResolver.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/DbRefResolver.java
@@ -0,0 +1,48 @@
+/*
+ * 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.core.convert;
+
+import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
+import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
+
+import com.mongodb.DBRef;
+
+/**
+ * Used to resolve associations annotated with {@link org.springframework.data.mongodb.core.mapping.DBRef}.
+ * 
+ * @author Thomas Darimont
+ */
+public interface DbRefResolver {
+
+	/**
+	 * @param property will never be {@literal null}.
+	 * @param callback will never be {@literal null}.
+	 * @return
+	 */
+	Object resolveDbRef(MongoPersistentProperty property, DbRefResolverCallback callback);
+
+	/**
+	 * Creates a {@link DBRef} instance for the given {@link org.springframework.data.mongodb.core.mapping.DBRef}
+	 * annotation, {@link MongoPersistentEntity} and id.
+	 * 
+	 * @param annotation will never be {@literal null}.
+	 * @param entity will never be {@literal null}.
+	 * @param id will never be {@literal null}.
+	 * @return
+	 */
+	DBRef createDbRef(org.springframework.data.mongodb.core.mapping.DBRef annotation, MongoPersistentEntity<?> entity,
+			Object id);
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/DbRefResolverCallback.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/DbRefResolverCallback.java
@@ -0,0 +1,35 @@
+/*
+ * 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.core.convert;
+
+import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
+
+/**
+ * Callback interface to be used in conjunction with {@link DbRefResolver}.
+ * 
+ * @author Thomas Darimont
+ * @author Oliver Gierke
+ */
+public interface DbRefResolverCallback {
+
+	/**
+	 * Resolve the final object for the given {@link MongoPersistentProperty}.
+	 * 
+	 * @param property will never be {@literal null}.
+	 * @return
+	 */
+	Object resolve(MongoPersistentProperty property);
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/DefaultDbRefResolver.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/DefaultDbRefResolver.java
@@ -0,0 +1,282 @@
+/*
+ * 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.core.convert;
+
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.Serializable;
+import java.lang.reflect.Method;
+
+import org.aopalliance.intercept.MethodInterceptor;
+import org.aopalliance.intercept.MethodInvocation;
+import org.objenesis.Objenesis;
+import org.objenesis.ObjenesisStd;
+import org.springframework.aop.framework.ProxyFactory;
+import org.springframework.cglib.proxy.Callback;
+import org.springframework.cglib.proxy.Enhancer;
+import org.springframework.cglib.proxy.Factory;
+import org.springframework.cglib.proxy.MethodProxy;
+import org.springframework.core.SpringVersion;
+import org.springframework.dao.DataAccessException;
+import org.springframework.dao.support.PersistenceExceptionTranslator;
+import org.springframework.data.mongodb.LazyLoadingException;
+import org.springframework.data.mongodb.MongoDbFactory;
+import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
+import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
+import org.springframework.util.Assert;
+import org.springframework.util.ClassUtils;
+import org.springframework.util.ReflectionUtils;
+import org.springframework.util.StringUtils;
+
+import com.mongodb.DB;
+import com.mongodb.DBRef;
+
+/**
+ * A {@link DbRefResolver} that resolves {@link org.springframework.data.mongodb.core.mapping.DBRef}s by delegating to a
+ * {@link DbRefResolverCallback} than is able to generate lazy loading proxies.
+ * 
+ * @author Thomas Darimont
+ * @author Oliver Gierke
+ */
+public class DefaultDbRefResolver implements DbRefResolver {
+
+	private static final boolean IS_SPRING_4_OR_BETTER = SpringVersion.getVersion().startsWith("4");
+	private static final boolean OBJENESIS_PRESENT = ClassUtils.isPresent("org.objenesis.Objenesis", null);
+
+	private final MongoDbFactory mongoDbFactory;
+	private final PersistenceExceptionTranslator exceptionTranslator;
+
+	/**
+	 * Creates a new {@link DefaultDbRefResolver} with the given {@link MongoDbFactory}.
+	 * 
+	 * @param mongoDbFactory must not be {@literal null}.
+	 */
+	public DefaultDbRefResolver(MongoDbFactory mongoDbFactory) {
+
+		Assert.notNull(mongoDbFactory, "MongoDbFactory translator must not be null!");
+
+		this.mongoDbFactory = mongoDbFactory;
+		this.exceptionTranslator = mongoDbFactory.getExceptionTranslator();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.convert.DbRefResolver#resolveDbRef(org.springframework.data.mongodb.core.mapping.MongoPersistentProperty, org.springframework.data.mongodb.core.convert.DbRefResolverCallback)
+	 */
+	@Override
+	public Object resolveDbRef(MongoPersistentProperty property, DbRefResolverCallback callback) {
+
+		Assert.notNull(property, "Property must not be null!");
+		Assert.notNull(callback, "Callback must not be null!");
+
+		if (isLazyDbRef(property)) {
+			return createLazyLoadingProxy(property, callback);
+		}
+
+		return callback.resolve(property);
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.convert.DbRefResolver#created(org.springframework.data.mongodb.core.mapping.MongoPersistentProperty, org.springframework.data.mongodb.core.mapping.MongoPersistentEntity, java.lang.Object)
+	 */
+	@Override
+	public DBRef createDbRef(org.springframework.data.mongodb.core.mapping.DBRef annotation,
+			MongoPersistentEntity<?> entity, Object id) {
+
+		DB db = mongoDbFactory.getDb();
+		db = annotation != null && StringUtils.hasText(annotation.db()) ? mongoDbFactory.getDb(annotation.db()) : db;
+
+		return new DBRef(db, entity.getCollection(), id);
+	}
+
+	/**
+	 * Creates a proxy for the given {@link MongoPersistentProperty} using the given {@link DbRefResolverCallback} to
+	 * eventually resolve the value of the property.
+	 * 
+	 * @param property must not be {@literal null}.
+	 * @param callback must not be {@literal null}.
+	 * @return
+	 */
+	private Object createLazyLoadingProxy(MongoPersistentProperty property, DbRefResolverCallback callback) {
+
+		ProxyFactory proxyFactory = new ProxyFactory();
+		Class<?> propertyType = property.getType();
+
+		for (Class<?> type : propertyType.getInterfaces()) {
+			proxyFactory.addInterface(type);
+		}
+
+		LazyLoadingInterceptor interceptor = new LazyLoadingInterceptor(property, exceptionTranslator, callback);
+
+		if (propertyType.isInterface()) {
+			proxyFactory.addInterface(propertyType);
+			proxyFactory.addAdvice(interceptor);
+			return proxyFactory.getProxy();
+		}
+
+		proxyFactory.setProxyTargetClass(true);
+		proxyFactory.setTargetClass(propertyType);
+
+		if (IS_SPRING_4_OR_BETTER || !OBJENESIS_PRESENT) {
+			proxyFactory.addAdvice(interceptor);
+			return proxyFactory.getProxy();
+		}
+
+		return ObjenesisProxyEnhancer.enhanceAndGet(proxyFactory, propertyType, interceptor);
+	}
+
+	/**
+	 * @param property
+	 * @return
+	 */
+	private boolean isLazyDbRef(MongoPersistentProperty property) {
+		return property.getDBRef() != null && property.getDBRef().lazy();
+	}
+
+	/**
+	 * A {@link MethodInterceptor} that is used within a lazy loading proxy. The property resolving is delegated to a
+	 * {@link DbRefResolverCallback}. The resolving process is triggered by a method invocation on the proxy and is
+	 * guaranteed to be performed only once.
+	 * 
+	 * @author Thomas Darimont
+	 */
+	static class LazyLoadingInterceptor implements MethodInterceptor, org.springframework.cglib.proxy.MethodInterceptor,
+			Serializable {
+
+		private final DbRefResolverCallback callback;
+		private final MongoPersistentProperty property;
+		private final PersistenceExceptionTranslator exceptionTranslator;
+
+		private volatile boolean resolved;
+		private Object result;
+
+		/**
+		 * Creates a new {@link LazyLoadingInterceptor} for the given {@link MongoPersistentProperty},
+		 * {@link PersistenceExceptionTranslator} and {@link DbRefResolverCallback}.
+		 * 
+		 * @param property must not be {@literal null}.
+		 * @param callback must not be {@literal null}.
+		 */
+		public LazyLoadingInterceptor(MongoPersistentProperty property, PersistenceExceptionTranslator exceptionTranslator,
+				DbRefResolverCallback callback) {
+
+			Assert.notNull(property, "Property must not be null!");
+			Assert.notNull(exceptionTranslator, "Exception translator must not be null!");
+			Assert.notNull(callback, "Callback must not be null!");
+
+			this.callback = callback;
+			this.exceptionTranslator = exceptionTranslator;
+			this.property = property;
+		}
+
+		/*
+		 * (non-Javadoc)
+		 * @see org.aopalliance.intercept.MethodInterceptor#invoke(org.aopalliance.intercept.MethodInvocation)
+		 */
+		@Override
+		public Object invoke(MethodInvocation invocation) throws Throwable {
+			return intercept(invocation.getThis(), invocation.getMethod(), invocation.getArguments(), null);
+		}
+
+		/* 
+		 * (non-Javadoc)
+		 * @see org.springframework.cglib.proxy.MethodInterceptor#intercept(java.lang.Object, java.lang.reflect.Method, java.lang.Object[], org.springframework.cglib.proxy.MethodProxy)
+		 */
+		@Override
+		public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
+			return ReflectionUtils.isObjectMethod(method) ? method.invoke(obj, args) : method.invoke(ensureResolved(), args);
+		}
+
+		private Object ensureResolved() {
+
+			if (!resolved) {
+				this.result = resolve();
+				this.resolved = true;
+			}
+
+			return this.result;
+		}
+
+		private void writeObject(ObjectOutputStream out) throws IOException {
+
+			ensureResolved();
+			out.writeObject(this.result);
+		}
+
+		private void readObject(ObjectInputStream in) throws IOException {
+
+			try {
+				this.resolved = true; // Object is guaranteed to be resolved after serializations
+				this.result = in.readObject();
+			} catch (ClassNotFoundException e) {
+				throw new LazyLoadingException("Could not deserialize result", e);
+			}
+		}
+
+		/**
+		 * @return
+		 */
+		private synchronized Object resolve() {
+
+			if (!resolved) {
+
+				try {
+
+					return callback.resolve(property);
+
+				} catch (RuntimeException ex) {
+
+					DataAccessException translatedException = this.exceptionTranslator.translateExceptionIfPossible(ex);
+					throw new LazyLoadingException("Unable to lazily resolve DBRef!", translatedException);
+				}
+			}
+
+			return result;
+		}
+
+		public boolean isResolved() {
+			return resolved;
+		}
+
+		public Object getResult() {
+			return result;
+		}
+	}
+
+	/**
+	 * Static class to accomodate optional dependency on Objenesis.
+	 * 
+	 * @author Oliver Gierke
+	 */
+	private static class ObjenesisProxyEnhancer {
+
+		private static final Objenesis OBJENESIS = new ObjenesisStd(true);
+
+		public static Object enhanceAndGet(ProxyFactory proxyFactory, Class<?> type,
+				org.springframework.cglib.proxy.MethodInterceptor interceptor) {
+
+			Enhancer enhancer = new Enhancer();
+			enhancer.setSuperclass(type);
+			enhancer.setCallbackType(org.springframework.cglib.proxy.MethodInterceptor.class);
+
+			Factory factory = (Factory) OBJENESIS.newInstance(enhancer.createClass());
+			factory.setCallbacks(new Callback[] { interceptor });
+			return factory;
+		}
+	}
+}
--- 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
@@ -57,11 +57,9 @@ import org.springframework.data.util.TypeInformation;
 import org.springframework.expression.spel.standard.SpelExpressionParser;
 import org.springframework.util.Assert;
 import org.springframework.util.CollectionUtils;
-import org.springframework.util.StringUtils;

 import com.mongodb.BasicDBList;
 import com.mongodb.BasicDBObject;
-import com.mongodb.DB;
 import com.mongodb.DBObject;
 import com.mongodb.DBRef;

@@ -80,8 +78,8 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App

 	protected final MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext;
 	protected final SpelExpressionParser spelExpressionParser = new SpelExpressionParser();
-	protected final MongoDbFactory mongoDbFactory;
 	protected final QueryMapper idMapper;
+	protected final DbRefResolver dbRefResolver;
 	protected ApplicationContext applicationContext;
 	protected boolean useFieldAccessOnly = true;
 	protected MongoTypeMapper typeMapper;
@@ -90,21 +88,21 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 	private SpELContext spELContext;

 	/**
-	 * Creates a new {@link MappingMongoConverter} given the new {@link MongoDbFactory} and {@link MappingContext}.
+	 * Creates a new {@link MappingMongoConverter} given the new {@link DbRefResolver} and {@link MappingContext}.
 	 * 
 	 * @param mongoDbFactory must not be {@literal null}.
 	 * @param mappingContext must not be {@literal null}.
 	 */
 	@SuppressWarnings("deprecation")
-	public MappingMongoConverter(MongoDbFactory mongoDbFactory,
+	public MappingMongoConverter(DbRefResolver dbRefResolver,
 			MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext) {

 		super(ConversionServiceFactory.createDefaultConversionService());

-		Assert.notNull(mongoDbFactory);
-		Assert.notNull(mappingContext);
+		Assert.notNull(dbRefResolver, "DbRefResolver must not be null!");
+		Assert.notNull(mappingContext, "MappingContext must not be null!");

-		this.mongoDbFactory = mongoDbFactory;
+		this.dbRefResolver = dbRefResolver;
 		this.mappingContext = mappingContext;
 		this.typeMapper = new DefaultMongoTypeMapper(DefaultMongoTypeMapper.DEFAULT_TYPE_KEY, mappingContext);
 		this.idMapper = new QueryMapper(this);
@@ -112,6 +110,19 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		this.spELContext = new SpELContext(DBObjectPropertyAccessor.INSTANCE);
 	}

+	/**
+	 * Creates a new {@link MappingMongoConverter} given the new {@link MongoDbFactory} and {@link MappingContext}.
+	 * 
+	 * @deprecated use the constructor taking a {@link DbRefResolver} instead.
+	 * @param mongoDbFactory must not be {@literal null}.
+	 * @param mappingContext must not be {@literal null}.
+	 */
+	@Deprecated
+	public MappingMongoConverter(MongoDbFactory mongoDbFactory,
+			MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext) {
+		this(new DefaultDbRefResolver(mongoDbFactory), mappingContext);
+	}
+
 	/**
 	 * Configures the {@link MongoTypeMapper} to be used to add type information to {@link DBObject}s created by the
 	 * converter and how to lookup type information from {@link DBObject}s when reading them. Uses a
@@ -234,7 +245,7 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 				parent);
 	}

-	private <S extends Object> S read(final MongoPersistentEntity<S> entity, final DBObject dbo, Object parent) {
+	private <S extends Object> S read(final MongoPersistentEntity<S> entity, final DBObject dbo, final Object parent) {

 		final DefaultSpELExpressionEvaluator evaluator = new DefaultSpELExpressionEvaluator(dbo, spELContext);

@@ -261,11 +272,18 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		// Handle associations
 		entity.doWithAssociations(new AssociationHandler<MongoPersistentProperty>() {
 			public void doWithAssociation(Association<MongoPersistentProperty> association) {
+
 				MongoPersistentProperty inverseProp = association.getInverse();
-				Object obj = getValueInternal(inverseProp, dbo, evaluator, result);
+
+				Object obj = dbRefResolver.resolveDbRef(inverseProp, new DbRefResolverCallback() {
+
+					@Override
+					public Object resolve(MongoPersistentProperty property) {
+						return getValueInternal(property, dbo, evaluator, parent);
+					}
+				});

 				wrapper.setProperty(inverseProp, obj);
-
 			}
 		});

@@ -385,7 +403,7 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 					if (!conversions.isSimpleType(propertyObj.getClass())) {
 						writePropertyInternal(propertyObj, dbo, prop);
 					} else {
-						writeSimpleInternal(propertyObj, dbo, prop.getFieldName());
+						writeSimpleInternal(propertyObj, dbo, prop);
 					}
 				}
 			}
@@ -410,26 +428,27 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 			return;
 		}

-		String name = prop.getFieldName();
+		DBObjectAccessor accessor = new DBObjectAccessor(dbo);
+
 		TypeInformation<?> valueType = ClassTypeInformation.from(obj.getClass());
 		TypeInformation<?> type = prop.getTypeInformation();

 		if (valueType.isCollectionLike()) {
 			DBObject collectionInternal = createCollection(asCollection(obj), prop);
-			dbo.put(name, collectionInternal);
+			accessor.put(prop, collectionInternal);
 			return;
 		}

 		if (valueType.isMap()) {
 			DBObject mapDbObj = createMap((Map<Object, Object>) obj, prop);
-			dbo.put(name, mapDbObj);
+			accessor.put(prop, mapDbObj);
 			return;
 		}

 		if (prop.isDbReference()) {
 			DBRef dbRefObj = createDBRef(obj, prop.getDBRef());
 			if (null != dbRefObj) {
-				dbo.put(name, dbRefObj);
+				accessor.put(prop, dbRefObj);
 				return;
 			}
 		}
@@ -438,18 +457,20 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		Class<?> basicTargetType = conversions.getCustomWriteTarget(obj.getClass(), null);

 		if (basicTargetType != null) {
-			dbo.put(name, conversionService.convert(obj, basicTargetType));
+			accessor.put(prop, conversionService.convert(obj, basicTargetType));
 			return;
 		}

-		BasicDBObject propDbObj = new BasicDBObject();
+		Object existingValue = accessor.get(prop);
+		BasicDBObject propDbObj = existingValue instanceof BasicDBObject ? (BasicDBObject) existingValue
+				: new BasicDBObject();
 		addCustomTypeKeyIfNecessary(type, obj, propDbObj);

 		MongoPersistentEntity<?> entity = isSubtype(prop.getType(), obj.getClass()) ? mappingContext
 				.getPersistentEntity(obj.getClass()) : mappingContext.getPersistentEntity(type);

 		writeInternal(obj, propDbObj, entity);
-		dbo.put(name, propDbObj);
+		accessor.put(prop, propDbObj);
 	}

 	private boolean isSubtype(Class<?> left, Class<?> right) {
@@ -667,6 +688,11 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		dbObject.put(key, getPotentiallyConvertedSimpleWrite(value));
 	}

+	private void writeSimpleInternal(Object value, DBObject dbObject, MongoPersistentProperty property) {
+		DBObjectAccessor accessor = new DBObjectAccessor(dbObject);
+		accessor.put(property, getPotentiallyConvertedSimpleWrite(value));
+	}
+
 	/**
 	 * Checks whether we have a custom conversion registered for the given value into an arbitrary simple Mongo type.
 	 * Returns the converted value if so. If not, we perform special enum handling or simply return the value as is.
@@ -742,10 +768,7 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 			throw new MappingException("Cannot create a reference to an object with a NULL id.");
 		}

-		DB db = mongoDbFactory.getDb();
-		db = dbref != null && StringUtils.hasText(dbref.db()) ? mongoDbFactory.getDb(dbref.db()) : db;
-
-		return new DBRef(db, targetEntity.getCollection(), idMapper.convertId(id));
+		return dbRefResolver.createDbRef(dbref, targetEntity, idMapper.convertId(id));
 	}

 	protected Object getValueInternal(MongoPersistentProperty prop, DBObject dbo, SpELExpressionEvaluator eval,
@@ -785,7 +808,7 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 			Object dbObjItem = sourceValue.get(i);

 			if (dbObjItem instanceof DBRef) {
-				items.add(DBRef.class.equals(rawComponentType) ? dbObjItem : read(componentType, ((DBRef) dbObjItem).fetch(),
+				items.add(DBRef.class.equals(rawComponentType) ? dbObjItem : read(componentType, readRef((DBRef) dbObjItem),
 						parent));
 			} else if (dbObjItem instanceof DBObject) {
 				items.add(read(componentType, (DBObject) dbObjItem, parent));
@@ -833,7 +856,7 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 			if (value instanceof DBObject) {
 				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()));
+				map.put(key, DBRef.class.equals(rawValueType) ? value : read(valueType, readRef((DBRef) value)));
 			} else {
 				Class<?> valueClass = valueType == null ? null : valueType.getType();
 				map.put(key, getPotentiallyConvertedSimpleRead(value, valueClass));
@@ -965,7 +988,7 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App

 	private class MongoDbPropertyValueProvider implements PropertyValueProvider<MongoPersistentProperty> {

-		private final DBObject source;
+		private final DBObjectAccessor source;
 		private final SpELExpressionEvaluator evaluator;
 		private final Object parent;

@@ -978,7 +1001,7 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 			Assert.notNull(source);
 			Assert.notNull(evaluator);

-			this.source = source;
+			this.source = new DBObjectAccessor(source);
 			this.evaluator = evaluator;
 			this.parent = parent;
 		}
@@ -990,7 +1013,7 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		public <T> T getPropertyValue(MongoPersistentProperty property) {

 			String expression = property.getSpelExpression();
-			Object value = expression != null ? evaluator.evaluate(expression) : source.get(property.getFieldName());
+			Object value = expression != null ? evaluator.evaluate(expression) : source.get(property);

 			if (value == null) {
 				return null;
@@ -1043,7 +1066,7 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 		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));
+			return (T) (rawType.equals(DBRef.class) ? value : read(type, readRef((DBRef) value), parent));
 		} else if (value instanceof BasicDBList) {
 			return (T) readCollectionOrArray(type, (BasicDBList) value, parent);
 		} else if (value instanceof DBObject) {
@@ -1052,4 +1075,14 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 			return (T) getPotentiallyConvertedSimpleRead(value, rawType);
 		}
 	}
+
+	/**
+	 * Performs the fetch operation for the given {@link DBRef}.
+	 * 
+	 * @param ref
+	 * @return
+	 */
+	DBObject readRef(DBRef ref) {
+		return ref.fetch();
+	}
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/MongoConverters.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/MongoConverters.java
@@ -24,8 +24,11 @@ import org.bson.types.ObjectId;
 import org.springframework.core.convert.ConversionFailedException;
 import org.springframework.core.convert.TypeDescriptor;
 import org.springframework.core.convert.converter.Converter;
+import org.springframework.data.convert.ReadingConverter;
 import org.springframework.util.StringUtils;

+import com.mongodb.DBObject;
+
 /**
 * Wrapper class to contain useful converters for the usage with Mongo.
 * 
@@ -147,4 +150,15 @@ abstract class MongoConverters {
 			}
 		}
 	}
+
+	@ReadingConverter
+	public static enum DBObjectToStringConverter implements Converter<DBObject, String> {
+
+		INSTANCE;
+
+		@Override
+		public String convert(DBObject source) {
+			return source == null ? null : source.toString();
+		}
+	}
 }
--- 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
@@ -48,7 +48,6 @@ import com.mongodb.DBRef;
 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;
@@ -79,7 +78,7 @@ public class QueryMapper {
 	@SuppressWarnings("deprecation")
 	public DBObject getMappedObject(DBObject query, MongoPersistentEntity<?> entity) {

-		if (Keyword.isKeyword(query)) {
+		if (isNestedKeyword(query)) {
 			return getMappedKeyword(new Keyword(query), entity);
 		}

@@ -97,7 +96,7 @@ public class QueryMapper {
 				continue;
 			}

-			if (Keyword.isKeyword(key)) {
+			if (isKeyword(key)) {
 				result.putAll(getMappedKeyword(new Keyword(query, key), entity));
 				continue;
 			}
@@ -107,7 +106,7 @@ public class QueryMapper {
 			Object rawValue = query.get(key);
 			String newKey = field.getMappedKey();

-			if (Keyword.isKeyword(rawValue) && !field.isIdField()) {
+			if (isNestedKeyword(rawValue) && !field.isIdField()) {
 				Keyword keyword = new Keyword((DBObject) rawValue);
 				result.put(newKey, getMappedKeyword(field, keyword));
 			} else {
@@ -121,16 +120,16 @@ public class QueryMapper {
 	/**
 	 * 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 keyword the {@link DBObject} representing a keyword (e.g. {@code $ne : … } )
 	 * @param entity
 	 * @return
 	 */
-	private DBObject getMappedKeyword(Keyword query, MongoPersistentEntity<?> entity) {
+	private DBObject getMappedKeyword(Keyword keyword, MongoPersistentEntity<?> entity) {

 		// $or/$nor
-		if (query.key.matches(N_OR_PATTERN) || query.value instanceof Iterable) {
+		if (keyword.isOrOrNor() || keyword.hasIterableValue()) {

-			Iterable<?> conditions = (Iterable<?>) query.value;
+			Iterable<?> conditions = keyword.getValue();
 			BasicDBList newConditions = new BasicDBList();

 			for (Object condition : conditions) {
@@ -138,10 +137,10 @@ public class QueryMapper {
 						: convertSimpleOrDBObject(condition, entity));
 			}

-			return new BasicDBObject(query.key, newConditions);
+			return new BasicDBObject(keyword.getKey(), newConditions);
 		}

-		return new BasicDBObject(query.key, convertSimpleOrDBObject(query.value, entity));
+		return new BasicDBObject(keyword.getKey(), convertSimpleOrDBObject(keyword.getValue(), entity));
 	}

 	/**
@@ -154,10 +153,12 @@ public class QueryMapper {
 	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);
+		Object value = keyword.getValue();

-		return new BasicDBObject(keyword.key, value);
+		Object convertedValue = needsAssociationConversion ? convertAssociation(value, property.getProperty())
+				: getMappedValue(property.with(keyword.getKey()), value);
+
+		return new BasicDBObject(keyword.key, convertedValue);
 	}

 	/**
@@ -195,7 +196,7 @@ public class QueryMapper {
 			}
 		}

-		if (Keyword.isKeyword(value)) {
+		if (isNestedKeyword(value)) {
 			return getMappedKeyword(new Keyword((DBObject) value), null);
 		}

@@ -289,6 +290,39 @@ public class QueryMapper {
 		return delegateConvertToMongoType(id, null);
 	}

+	/**
+	 * Returns whether the given {@link Object} is a keyword, i.e. if it's a {@link DBObject} with a keyword key.
+	 * 
+	 * @param candidate
+	 * @return
+	 */
+	protected boolean isNestedKeyword(Object candidate) {
+
+		if (!(candidate instanceof BasicDBObject)) {
+			return false;
+		}
+
+		BasicDBObject dbObject = (BasicDBObject) candidate;
+		Set<String> keys = dbObject.keySet();
+
+		if (keys.size() != 1) {
+			return false;
+		}
+
+		return isKeyword(keys.iterator().next().toString());
+	}
+
+	/**
+	 * Returns whether the given {@link String} is a MongoDB keyword. The default implementation will check against the
+	 * set of registered keywords returned by {@link #getKeywords()}.
+	 * 
+	 * @param candidate
+	 * @return
+	 */
+	protected boolean isKeyword(String candidate) {
+		return candidate.startsWith("$");
+	}
+
 	/**
 	 * Value object to capture a query keyword representation.
 	 * 
@@ -296,8 +330,10 @@ public class QueryMapper {
 	 */
 	private static class Keyword {

-		String key;
-		Object value;
+		private static final String N_OR_PATTERN = "\\$.*or";
+
+		private final String key;
+		private final Object value;

 		public Keyword(DBObject source, String key) {
 			this.key = key;
@@ -322,25 +358,21 @@ public class QueryMapper {
 			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) {
+		public boolean isOrOrNor() {
+			return key.matches(N_OR_PATTERN);
+		}

-			if (value instanceof String) {
-				return ((String) value).startsWith("$");
-			}
+		public boolean hasIterableValue() {
+			return value instanceof Iterable;
+		}

-			if (!(value instanceof DBObject)) {
-				return false;
-			}
+		public String getKey() {
+			return key;
+		}

-			DBObject dbObject = (DBObject) value;
-			return dbObject.keySet().size() == 1 && dbObject.keySet().iterator().next().startsWith("$");
+		@SuppressWarnings("unchecked")
+		public <T> T getValue() {
+			return (T) value;
 		}
 	}

--- 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/mapping/DBRef.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/DBRef.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2012 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.
@@ -27,7 +27,8 @@ import org.springframework.data.annotation.Reference;
 * An annotation that indicates the annotated field is to be stored using a {@link com.mongodb.DBRef}.
 * 
 * @author Jon Brisbin
- * @authot Oliver Gierke
+ * @author Oliver Gierke
+ * @author Thomas Darimont
 */
@Documented
@Retention(RetentionPolicy.RUNTIME)
@@ -41,4 +42,11 @@ public @interface DBRef {
 	 * @return
 	 */
 	String db() default "";
+
+	/**
+	 * Controls whether the referenced entity should be loaded lazily. This defaults to {@literal false}.
+	 * 
+	 * @return
+	 */
+	boolean lazy() default false;
 }
--- 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.
@@ -39,6 +39,10 @@ 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 {

@@ -396,34 +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 $not operator.
+	 * <p>
 	 * 
+	 * @throws IllegalArgumentException if {@link #orOperator(Criteria...)} follows a not() call directly.
 	 * @param criteria
 	 */
 	public Criteria orOperator(Criteria... criteria) {
 		BasicDBList bsonList = createCriteriaList(criteria);
-		criteriaChain.add(new Criteria("$or").is(bsonList));
-		return this;
+		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 $not operator.
+	 * <p>
 	 * 
+	 * @throws IllegalArgumentException if {@link #norOperator(Criteria...)} follows a not() call directly.
 	 * @param criteria
 	 */
 	public Criteria norOperator(Criteria... criteria) {
 		BasicDBList bsonList = createCriteriaList(criteria);
-		criteriaChain.add(new Criteria("$nor").is(bsonList));
-		return this;
+		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 $not operator.
+	 * <p>
 	 * 
+	 * @throws IllegalArgumentException if {@link #andOperator(Criteria...)} follows a not() call directly.
 	 * @param criteria
 	 */
 	public Criteria andOperator(Criteria... criteria) {
 		BasicDBList bsonList = createCriteriaList(criteria);
-		criteriaChain.add(new Criteria("$and").is(bsonList));
+		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;
 	}

@@ -468,6 +492,7 @@ public class Criteria implements CriteriaDefinition {
 				}
 			}
 		}
+
 		DBObject queryCriteria = new BasicDBObject();
 		if (isValue != NOT_SET) {
 			queryCriteria.put(this.key, this.isValue);
--- 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
@@ -15,6 +15,7 @@
 */
 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;
@@ -29,6 +30,7 @@ import com.mongodb.DBObject;
 * Builder class to build near-queries.
 * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public class NearQuery {

@@ -38,6 +40,7 @@ public class NearQuery {
 	private Metric metric;
 	private boolean spherical;
 	private Integer num;
+	private Integer skip;

 	/**
 	 * Creates a new {@link NearQuery}.
@@ -116,7 +119,7 @@ public class NearQuery {
 	}

 	/**
-	 * Configures the number of results to return.
+	 * Configures the maximum number of results to return.
 	 * 
 	 * @param num
 	 * @return
@@ -126,6 +129,29 @@ public class NearQuery {
 		return this;
 	}

+	/**
+	 * 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.
@@ -290,9 +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}.
 	 * 
--- 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
@@ -31,6 +31,7 @@ import com.mongodb.DBObject;
 * @author Thomas Risberg
 * @author Mark Pollack
 * @author Oliver Gierke
+ * @author Becca Gaspard
 */
 public class Update {

@@ -90,6 +91,18 @@ public class Update {
 		return this;
 	}

+	/**
+	 * Update using the $setOnInsert update modifier
+	 * 
+	 * @param key
+	 * @param value
+	 * @return
+	 */
+	public Update setOnInsert(String key, Object value) {
+		addMultiFieldOperation("$setOnInsert", key, value);
+		return this;
+	}
+
 	/**
 	 * Update using the $unset update modifier
 	 * 
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/ExpressionNode.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/ExpressionNode.java
@@ -0,0 +1,217 @@
+/*
+ * 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.core.spel;
+
+import java.util.Collections;
+import java.util.Iterator;
+
+import org.springframework.expression.spel.ExpressionState;
+import org.springframework.expression.spel.SpelNode;
+import org.springframework.expression.spel.ast.Literal;
+import org.springframework.expression.spel.ast.MethodReference;
+import org.springframework.expression.spel.ast.Operator;
+import org.springframework.util.Assert;
+
+/**
+ * A value object for nodes in an expression. Allows iterating ove potentially available child {@link ExpressionNode}s.
+ * 
+ * @author Oliver Gierke
+ */
+public class ExpressionNode implements Iterable<ExpressionNode> {
+
+	private static final Iterator<ExpressionNode> EMPTY_ITERATOR = Collections.<ExpressionNode> emptySet().iterator();
+
+	private final SpelNode node;
+	private final ExpressionState state;
+
+	/**
+	 * Creates a new {@link ExpressionNode} from the given {@link SpelNode} and {@link ExpressionState}.
+	 * 
+	 * @param node must not be {@literal null}.
+	 * @param state must not be {@literal null}.
+	 */
+	protected ExpressionNode(SpelNode node, ExpressionState state) {
+
+		Assert.notNull(node, "SpelNode must not be null!");
+		Assert.notNull(state, "ExpressionState must not be null!");
+
+		this.node = node;
+		this.state = state;
+	}
+
+	/**
+	 * Factory method to create {@link ExpressionNode}'s according to the given {@link SpelNode} and
+	 * {@link ExpressionState}.
+	 * 
+	 * @param node
+	 * @param state must not be {@literal null}.
+	 * @return an {@link ExpressionNode} for the given {@link SpelNode} or {@literal null} if {@literal null} was given
+	 *         for the {@link SpelNode}.
+	 */
+	public static ExpressionNode from(SpelNode node, ExpressionState state) {
+
+		if (node == null) {
+			return null;
+		}
+
+		if (node instanceof Operator) {
+			return new OperatorNode((Operator) node, state);
+		}
+
+		if (node instanceof MethodReference) {
+			return new MethodReferenceNode((MethodReference) node, state);
+		}
+
+		if (node instanceof Literal) {
+			return new LiteralNode((Literal) node, state);
+		}
+
+		return new ExpressionNode(node, state);
+	}
+
+	/**
+	 * Returns the name of the {@link ExpressionNode}.
+	 * 
+	 * @return
+	 */
+	public String getName() {
+		return node.toStringAST();
+	}
+
+	/**
+	 * Returns whether the current {@link ExpressionNode} is backed by the given type.
+	 * 
+	 * @param type must not be {@literal null}.
+	 * @return
+	 */
+	public boolean isOfType(Class<?> type) {
+
+		Assert.notNull(type, "Type must not be empty!");
+		return type.isAssignableFrom(node.getClass());
+	}
+
+	/**
+	 * Returns whether the given {@link ExpressionNode} is representing the same backing node type as the current one.
+	 * 
+	 * @param node
+	 * @return
+	 */
+	boolean isOfSameTypeAs(ExpressionNode node) {
+		return node == null ? false : this.node.getClass().equals(node.node.getClass());
+	}
+
+	/**
+	 * Returns whether the {@link ExpressionNode} is a mathematical operation.
+	 * 
+	 * @return
+	 */
+	public boolean isMathematicalOperation() {
+		return false;
+	}
+
+	/**
+	 * Returns whether the {@link ExpressionNode} is a literal.
+	 * 
+	 * @return
+	 */
+	public boolean isLiteral() {
+		return false;
+	}
+
+	/**
+	 * Returns the value of the current node.
+	 * 
+	 * @return
+	 */
+	public Object getValue() {
+		return node.getValue(state);
+	}
+
+	/**
+	 * Returns whether the current node has child nodes.
+	 * 
+	 * @return
+	 */
+	public boolean hasChildren() {
+		return node.getChildCount() != 0;
+	}
+
+	/**
+	 * Returns the child {@link ExpressionNode} with the given index.
+	 * 
+	 * @param index must not be negative.
+	 * @return
+	 */
+	public ExpressionNode getChild(int index) {
+
+		Assert.isTrue(index >= 0);
+		return from(node.getChild(index), state);
+	}
+
+	/**
+	 * Returns whether the {@link ExpressionNode} has a first child node that is not of the given type.
+	 * 
+	 * @param type must not be {@literal null}.
+	 * @return
+	 */
+	public boolean hasfirstChildNotOfType(Class<?> type) {
+
+		Assert.notNull(type, "Type must not be null!");
+		return hasChildren() && !node.getChild(0).getClass().equals(type);
+	}
+
+	/**
+	 * Creates a new {@link ExpressionNode} from the given {@link SpelNode}.
+	 * 
+	 * @param node
+	 * @return
+	 */
+	protected ExpressionNode from(SpelNode node) {
+		return from(node, state);
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see java.lang.Iterable#iterator()
+	 */
+	@Override
+	public Iterator<ExpressionNode> iterator() {
+
+		if (!hasChildren()) {
+			return EMPTY_ITERATOR;
+		}
+
+		return new Iterator<ExpressionNode>() {
+
+			int index = 0;
+
+			@Override
+			public boolean hasNext() {
+				return index < node.getChildCount();
+			}
+
+			@Override
+			public ExpressionNode next() {
+				return from(node.getChild(index++));
+			}
+
+			@Override
+			public void remove() {
+				throw new UnsupportedOperationException();
+			}
+		};
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/ExpressionTransformationContextSupport.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/ExpressionTransformationContextSupport.java
@@ -0,0 +1,126 @@
+/*
+ * 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.core.spel;
+
+import org.springframework.util.Assert;
+
+import com.mongodb.BasicDBList;
+import com.mongodb.DBObject;
+
+/**
+ * The context for an {@link ExpressionNode} transformation.
+ * 
+ * @author Thomas Darimont
+ * @author Oliver Gierke
+ */
+public class ExpressionTransformationContextSupport<T extends ExpressionNode> {
+
+	private final T currentNode;
+	private final ExpressionNode parentNode;
+	private final DBObject previousOperationObject;
+
+	/**
+	 * Creates a new {@link ExpressionTransformationContextSupport} for the given {@link ExpressionNode}s and an optional
+	 * previous operation.
+	 * 
+	 * @param currentNode must not be {@literal null}.
+	 * @param parentNode
+	 * @param previousOperationObject
+	 */
+	public ExpressionTransformationContextSupport(T currentNode, ExpressionNode parentNode,
+			DBObject previousOperationObject) {
+
+		Assert.notNull(currentNode, "currentNode must not be null!");
+
+		this.currentNode = currentNode;
+		this.parentNode = parentNode;
+		this.previousOperationObject = previousOperationObject;
+	}
+
+	/**
+	 * Returns the current {@link ExpressionNode}.
+	 * 
+	 * @return
+	 */
+	public T getCurrentNode() {
+		return currentNode;
+	}
+
+	/**
+	 * Returns the parent {@link ExpressionNode} or {@literal null} if none available.
+	 * 
+	 * @return
+	 */
+	public ExpressionNode getParentNode() {
+		return parentNode;
+	}
+
+	/**
+	 * Returns the previously accumulated operaton object or {@literal null} if none available. Rather than manually
+	 * adding stuff to the object prefer using {@link #addToPreviousOrReturn(Object)} to transparently do if one is
+	 * present.
+	 * 
+	 * @see #hasPreviousOperation()
+	 * @see #addToPreviousOrReturn(Object)
+	 * @return
+	 */
+	public DBObject getPreviousOperationObject() {
+		return previousOperationObject;
+	}
+
+	/**
+	 * Returns whether a previous operation is present.
+	 * 
+	 * @return
+	 */
+	public boolean hasPreviousOperation() {
+		return getPreviousOperationObject() != null;
+	}
+
+	/**
+	 * Returns whether the parent node is of the same operation as the current node.
+	 * 
+	 * @return
+	 */
+	public boolean parentIsSameOperation() {
+		return parentNode == null ? false : currentNode.isOfSameTypeAs(parentNode);
+	}
+
+	/**
+	 * Adds the given value to the previous operation and returns it.
+	 * 
+	 * @param value
+	 * @return
+	 */
+	public DBObject addToPreviousOperation(Object value) {
+		extractArgumentListFrom(previousOperationObject).add(value);
+		return previousOperationObject;
+	}
+
+	/**
+	 * Adds the given value to the previous operation if one is present or returns the value to add as is.
+	 * 
+	 * @param value
+	 * @return
+	 */
+	public Object addToPreviousOrReturn(Object value) {
+		return hasPreviousOperation() ? addToPreviousOperation(value) : value;
+	}
+
+	private BasicDBList extractArgumentListFrom(DBObject context) {
+		return (BasicDBList) context.get(context.keySet().iterator().next());
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/ExpressionTransformer.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/ExpressionTransformer.java
@@ -0,0 +1,33 @@
+/*
+ * 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.core.spel;
+
+/**
+ * SPI interface to implement components that can transfrom an {@link ExpressionTransformationContextSupport} into an
+ * object.
+ * 
+ * @author Oliver Gierke
+ */
+public interface ExpressionTransformer<T extends ExpressionTransformationContextSupport<?>> {
+
+	/**
+	 * Transforms the given {@link ExpressionTransformationContextSupport} into an Object.
+	 * 
+	 * @param context will never be {@literal null}.
+	 * @return
+	 */
+	Object transform(T context);
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/LiteralNode.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/LiteralNode.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.core.spel;
+
+import org.springframework.expression.spel.ExpressionState;
+import org.springframework.expression.spel.ast.FloatLiteral;
+import org.springframework.expression.spel.ast.IntLiteral;
+import org.springframework.expression.spel.ast.Literal;
+import org.springframework.expression.spel.ast.LongLiteral;
+import org.springframework.expression.spel.ast.NullLiteral;
+import org.springframework.expression.spel.ast.RealLiteral;
+import org.springframework.expression.spel.ast.StringLiteral;
+
+/**
+ * A node representing a literal in an expression.
+ * 
+ * @author Oliver Gierke
+ */
+public class LiteralNode extends ExpressionNode {
+
+	private final Literal literal;
+
+	/**
+	 * Creates a new {@link LiteralNode} from the given {@link Literal} and {@link ExpressionState}.
+	 * 
+	 * @param node must not be {@literal null}.
+	 * @param state must not be {@literal null}.
+	 */
+	LiteralNode(Literal node, ExpressionState state) {
+		super(node, state);
+		this.literal = node;
+	}
+
+	/**
+	 * Returns whether the given {@link ExpressionNode} is a unary minus.
+	 * 
+	 * @param parent
+	 * @return
+	 */
+	public boolean isUnaryMinus(ExpressionNode parent) {
+
+		if (!(parent instanceof OperatorNode)) {
+			return false;
+		}
+
+		OperatorNode operator = (OperatorNode) parent;
+		return operator.isUnaryMinus() && operator.getRight() == null;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.spel.ExpressionNode#isLiteral()
+	 */
+	@Override
+	public boolean isLiteral() {
+		return literal instanceof FloatLiteral || literal instanceof RealLiteral || literal instanceof IntLiteral
+				|| literal instanceof LongLiteral || literal instanceof StringLiteral || literal instanceof NullLiteral;
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/MethodReferenceNode.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/MethodReferenceNode.java
@@ -0,0 +1,75 @@
+/*
+ * 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.core.spel;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.springframework.expression.spel.ExpressionState;
+import org.springframework.expression.spel.ast.MethodReference;
+
+/**
+ * An {@link ExpressionNode} representing a method reference.
+ * 
+ * @author Oliver Gierke
+ * @author Thomas Darimont
+ */
+public class MethodReferenceNode extends ExpressionNode {
+
+	private static final Map<String, String> FUNCTIONS;
+
+	static {
+
+		Map<String, String> map = new HashMap<String, String>();
+
+		map.put("concat", "$concat"); // Concatenates two strings.
+		map.put("strcasecmp", "$strcasecmp"); // Compares two strings and returns an integer that reflects the comparison.
+		map.put("substr", "$substr"); // Takes a string and returns portion of that string.
+		map.put("toLower", "$toLower"); // Converts a string to lowercase.
+		map.put("toUpper", "$toUpper"); // Converts a string to uppercase.
+
+		map.put("dayOfYear", "$dayOfYear"); // Converts a date to a number between 1 and 366.
+		map.put("dayOfMonth", "$dayOfMonth"); // Converts a date to a number between 1 and 31.
+		map.put("dayOfWeek", "$dayOfWeek"); // Converts a date to a number between 1 and 7.
+		map.put("year", "$year"); // Converts a date to the full year.
+		map.put("month", "$month"); // Converts a date into a number between 1 and 12.
+		map.put("week", "$week"); // Converts a date into a number between 0 and 53
+		map.put("hour", "$hour"); // Converts a date into a number between 0 and 23.
+		map.put("minute", "$minute"); // Converts a date into a number between 0 and 59.
+		map.put("second", "$second"); // Converts a date into a number between 0 and 59. May be 60 to account for leap
+		// seconds.
+		map.put("millisecond", "$millisecond"); // Returns the millisecond portion of a date as an integer between 0 and
+
+		FUNCTIONS = Collections.unmodifiableMap(map);
+	}
+
+	MethodReferenceNode(MethodReference reference, ExpressionState state) {
+		super(reference, state);
+	}
+
+	/**
+	 * Returns the name of the method.
+	 * 
+	 * @return
+	 */
+	public String getMethodName() {
+
+		String name = getName();
+		String methodName = name.substring(0, name.indexOf('('));
+		return FUNCTIONS.get(methodName);
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/OperatorNode.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/OperatorNode.java
@@ -0,0 +1,120 @@
+/*
+ * 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.core.spel;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.springframework.expression.spel.ExpressionState;
+import org.springframework.expression.spel.ast.OpDivide;
+import org.springframework.expression.spel.ast.OpMinus;
+import org.springframework.expression.spel.ast.OpModulus;
+import org.springframework.expression.spel.ast.OpMultiply;
+import org.springframework.expression.spel.ast.OpPlus;
+import org.springframework.expression.spel.ast.Operator;
+
+/**
+ * An {@link ExpressionNode} representing an operator.
+ * 
+ * @author Oliver Gierke
+ * @author Thomas Darimont
+ */
+public class OperatorNode extends ExpressionNode {
+
+	private static final Map<String, String> OPERATORS;
+
+	static {
+
+		Map<String, String> map = new HashMap<String, String>(6);
+
+		map.put("+", "$add");
+		map.put("-", "$subtract");
+		map.put("*", "$multiply");
+		map.put("/", "$divide");
+		map.put("%", "$mod");
+
+		OPERATORS = Collections.unmodifiableMap(map);
+	}
+
+	private final Operator operator;
+
+	/**
+	 * Creates a new {@link OperatorNode} from the given {@link Operator} and {@link ExpressionState}.
+	 * 
+	 * @param node must not be {@literal null}.
+	 * @param state must not be {@literal null}.
+	 */
+	OperatorNode(Operator node, ExpressionState state) {
+		super(node, state);
+		this.operator = node;
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.spel.ExpressionNode#isMathematicalOperation()
+	 */
+	@Override
+	public boolean isMathematicalOperation() {
+		return operator instanceof OpMinus || operator instanceof OpPlus || operator instanceof OpMultiply
+				|| operator instanceof OpDivide || operator instanceof OpModulus;
+	}
+
+	/**
+	 * Returns whether the operator is unary.
+	 * 
+	 * @return
+	 */
+	public boolean isUnaryOperator() {
+		return operator.getRightOperand() == null;
+	}
+
+	/**
+	 * Returns the Mongo expression of the operator.
+	 * 
+	 * @return
+	 */
+	public String getMongoOperator() {
+		return OPERATORS.get(operator.getOperatorName());
+	}
+
+	/**
+	 * Returns whether the operator is a unary minus, e.g. -1.
+	 * 
+	 * @return
+	 */
+	public boolean isUnaryMinus() {
+		return isUnaryOperator() && operator instanceof OpMinus;
+	}
+
+	/**
+	 * Returns the left operand as {@link ExpressionNode}.
+	 * 
+	 * @return
+	 */
+	public ExpressionNode getLeft() {
+		return from(operator.getLeftOperand());
+	}
+
+	/**
+	 * Returns the right operand as {@link ExpressionNode}.
+	 * 
+	 * @return
+	 */
+	public ExpressionNode getRight() {
+		return from(operator.getRightOperand());
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/package-info.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/spel/package-info.java
@@ -0,0 +1,5 @@
+/**
+ * Support classes to transform SpEL expressions into MongoDB expressions.
+ * @since 1.4
+ */
+package org.springframework.data.mongodb.core.spel;
--- 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
@@ -158,7 +158,15 @@ public class GridFsTemplate implements GridFsOperations, ResourcePatternResolver
 	 * @see org.springframework.data.mongodb.gridfs.GridFsOperations#find(com.mongodb.DBObject)
 	 */
 	public List<GridFSDBFile> find(Query query) {
-		return getGridFs().find(getMappedQuery(query));
+
+		if (query == null) {
+			return getGridFs().find((DBObject) null);
+		}
+
+		DBObject queryObject = getMappedQuery(query.getQueryObject());
+		DBObject sortObject = getMappedQuery(query.getSortObject());
+
+		return getGridFs().find(queryObject, sortObject);
 	}

 	/*
@@ -221,7 +229,11 @@ public class GridFsTemplate implements GridFsOperations, ResourcePatternResolver
 	}

 	private DBObject getMappedQuery(Query query) {
-		return query == null ? null : queryMapper.getMappedObject(query.getQueryObject(), null);
+		return query == null ? null : getMappedQuery(query.getQueryObject());
+	}
+
+	private DBObject getMappedQuery(DBObject query) {
+		return query == null ? null : queryMapper.getMappedObject(query, null);
 	}

 	private GridFS getGridFs() {
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/monitor/ServerInfo.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/monitor/ServerInfo.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2012-2013 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/Query.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/Query.java
@@ -21,15 +21,19 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;

+import org.springframework.data.annotation.QueryAnnotation;
+
 /**
 * Annotation to declare finder queries directly on repository methods. Both attributes allow using a placeholder
 * notation of {@code ?0}, {@code ?1} and so on.
 * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
@Documented
+@QueryAnnotation
 public @interface Query {

 	/**
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/config/EnableMongoRepositories.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/config/EnableMongoRepositories.java
@@ -35,6 +35,7 @@ import org.springframework.data.repository.query.QueryLookupStrategy.Key;
 * {@link #basePackages()} or {@link #basePackageClasses()} it will trigger scanning of the package of annotated class.
 * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@@ -119,4 +120,10 @@ public @interface EnableMongoRepositories {
 	 * @return
 	 */
 	boolean createIndexesForQueryMethods() default false;
+
+	/**
+	 * Configures whether nested repository-interfaces (e.g. defined as inner classes) should be discovered by the
+	 * repositories infrastructure.
+	 */
+	boolean considerNestedRepositories() default false;
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/AbstractMongoQuery.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/AbstractMongoQuery.java
@@ -38,6 +38,7 @@ import org.springframework.util.Assert;
 * Base class for {@link RepositoryQuery} implementations for Mongo.
 * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public abstract class AbstractMongoQuery implements RepositoryQuery {

@@ -287,6 +288,11 @@ public abstract class AbstractMongoQuery implements RepositoryQuery {
 				nearQuery.maxDistance(maxDistance).in(maxDistance.getMetric());
 			}

+			Pageable pageable = accessor.getPageable();
+			if (pageable != null) {
+				nearQuery.with(pageable);
+			}
+
 			MongoEntityMetadata<?> metadata = method.getEntityInformation();
 			return (GeoResults<Object>) operations.geoNear(nearQuery, metadata.getJavaType(), metadata.getCollectionName());
 		}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/MongoQueryCreator.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/MongoQueryCreator.java
@@ -17,6 +17,7 @@ package org.springframework.data.mongodb.repository.query;

 import static org.springframework.data.mongodb.core.query.Criteria.*;

+import java.util.Arrays;
 import java.util.Collection;
 import java.util.Iterator;

@@ -35,6 +36,7 @@ import org.springframework.data.mongodb.core.query.Query;
 import org.springframework.data.mongodb.repository.query.ConvertingParameterAccessor.PotentiallyConvertingIterator;
 import org.springframework.data.repository.query.parser.AbstractQueryCreator;
 import org.springframework.data.repository.query.parser.Part;
+import org.springframework.data.repository.query.parser.Part.IgnoreCaseType;
 import org.springframework.data.repository.query.parser.Part.Type;
 import org.springframework.data.repository.query.parser.PartTree;
 import org.springframework.util.Assert;
@@ -43,6 +45,7 @@ import org.springframework.util.Assert;
 * Custom query creator to create Mongo criterias.
 * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 class MongoQueryCreator extends AbstractQueryCreator<Query, Criteria> {

@@ -99,7 +102,7 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Criteria> {

 		PersistentPropertyPath<MongoPersistentProperty> path = context.getPersistentPropertyPath(part.getProperty());
 		MongoPersistentProperty property = path.getLeafProperty();
-		Criteria criteria = from(part.getType(), property,
+		Criteria criteria = from(part, property,
 				where(path.toDotPath(MongoPersistentProperty.PropertyToFieldNameConverter.INSTANCE)),
 				(PotentiallyConvertingIterator) iterator);

@@ -120,7 +123,7 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Criteria> {
 		PersistentPropertyPath<MongoPersistentProperty> path = context.getPersistentPropertyPath(part.getProperty());
 		MongoPersistentProperty property = path.getLeafProperty();

-		return from(part.getType(), property,
+		return from(part, property,
 				base.and(path.toDotPath(MongoPersistentProperty.PropertyToFieldNameConverter.INSTANCE)),
 				(PotentiallyConvertingIterator) iterator);
 	}
@@ -165,9 +168,11 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Criteria> {
 	 * @param parameters
 	 * @return
 	 */
-	private Criteria from(Type type, MongoPersistentProperty property, Criteria criteria,
+	private Criteria from(Part part, MongoPersistentProperty property, Criteria criteria,
 			PotentiallyConvertingIterator parameters) {

+		Type type = part.getType();
+
 		switch (type) {
 			case AFTER:
 			case GREATER_THAN:
@@ -193,8 +198,7 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Criteria> {
 			case STARTING_WITH:
 			case ENDING_WITH:
 			case CONTAINING:
-				String value = parameters.next().toString();
-				return criteria.regex(toLikeRegex(value, type));
+				return addAppropriateLikeRegexTo(criteria, part, parameters.next().toString());
 			case REGEX:
 				return criteria.regex(parameters.next().toString());
 			case EXISTS:
@@ -220,19 +224,103 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Criteria> {
 					criteria.maxDistance(distance.getNormalizedValue());
 				}
 				return criteria;
-
 			case WITHIN:
+
 				Object parameter = parameters.next();
 				return criteria.within((Shape) parameter);
 			case SIMPLE_PROPERTY:
-				return criteria.is(parameters.nextConverted(property));
+
+				return isSimpleComparisionPossible(part) ? criteria.is(parameters.nextConverted(property))
+						: createLikeRegexCriteriaOrThrow(part, property, criteria, parameters, false);
+
 			case NEGATING_SIMPLE_PROPERTY:
-				return criteria.ne(parameters.nextConverted(property));
+
+				return isSimpleComparisionPossible(part) ? criteria.ne(parameters.nextConverted(property))
+						: createLikeRegexCriteriaOrThrow(part, property, criteria, parameters, true);
 			default:
 				throw new IllegalArgumentException("Unsupported keyword!");
 		}
 	}

+	private boolean isSimpleComparisionPossible(Part part) {
+
+		switch (part.shouldIgnoreCase()) {
+			case NEVER:
+				return true;
+			case WHEN_POSSIBLE:
+				return part.getProperty().getType() != String.class;
+			case ALWAYS:
+				return false;
+			default:
+				return true;
+		}
+	}
+
+	/**
+	 * Creates and extends the given criteria with a like-regex if necessary.
+	 * 
+	 * @param part
+	 * @param property
+	 * @param criteria
+	 * @param parameters
+	 * @param shouldNegateExpression
+	 * @return the criteria extended with the like-regex.
+	 */
+	private Criteria createLikeRegexCriteriaOrThrow(Part part, MongoPersistentProperty property, Criteria criteria,
+			PotentiallyConvertingIterator parameters, boolean shouldNegateExpression) {
+
+		switch (part.shouldIgnoreCase()) {
+
+			case ALWAYS:
+				if (part.getProperty().getType() != String.class) {
+					throw new IllegalArgumentException(String.format("part %s must be of type String but was %s",
+							part.getProperty(), part.getType()));
+				}
+				// fall-through
+
+			case WHEN_POSSIBLE:
+				if (shouldNegateExpression) {
+					criteria = criteria.not();
+				}
+				return addAppropriateLikeRegexTo(criteria, part, parameters.nextConverted(property).toString());
+
+			case NEVER:
+				// intentional no-op
+		}
+
+		throw new IllegalArgumentException(String.format("part.shouldCaseIgnore must be one of %s, but was %s",
+				Arrays.asList(IgnoreCaseType.ALWAYS, IgnoreCaseType.WHEN_POSSIBLE), part.shouldIgnoreCase()));
+	}
+
+	/**
+	 * Creates an appropriate like-regex and appends it to the given criteria.
+	 * 
+	 * @param criteria
+	 * @param part
+	 * @param value
+	 * @return the criteria extended with the regex.
+	 */
+	private Criteria addAppropriateLikeRegexTo(Criteria criteria, Part part, String value) {
+
+		return criteria.regex(toLikeRegex(value, part), toRegexOptions(part));
+	}
+
+	/**
+	 * @param part
+	 * @return the regex options or {@literal null}.
+	 */
+	private String toRegexOptions(Part part) {
+
+		String regexOptions = null;
+		switch (part.shouldIgnoreCase()) {
+			case WHEN_POSSIBLE:
+			case ALWAYS:
+				regexOptions = "i";
+			case NEVER:
+		}
+		return regexOptions;
+	}
+
 	/**
 	 * Returns the next element from the given {@link Iterator} expecting it to be of a certain type.
 	 * 
@@ -265,7 +353,9 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Criteria> {
 		return new Object[] { next };
 	}

-	private String toLikeRegex(String source, Type type) {
+	private String toLikeRegex(String source, Part part) {
+
+		Type type = part.getType();

 		switch (type) {
 			case STARTING_WITH:
@@ -277,6 +367,9 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Criteria> {
 			case CONTAINING:
 				source = "*" + source + "*";
 				break;
+			case SIMPLE_PROPERTY:
+			case NEGATING_SIMPLE_PROPERTY:
+				source = "^" + source + "$";
 			default:
 		}

--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/support/SpringDataMongodbSerializer.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/support/SpringDataMongodbSerializer.java
@@ -28,6 +28,7 @@ import com.mongodb.DBObject;
 import com.mysema.query.mongodb.MongodbSerializer;
 import com.mysema.query.types.Path;
 import com.mysema.query.types.PathMetadata;
+import com.mysema.query.types.PathType;

 /**
 * Custom {@link MongodbSerializer} to take mapping information into account when building keys for constraints.
@@ -61,6 +62,10 @@ class SpringDataMongodbSerializer extends MongodbSerializer {
 	@Override
 	protected String getKeyForPath(Path<?> expr, PathMetadata<?> metadata) {

+		if (!metadata.getPathType().equals(PathType.PROPERTY)) {
+			return super.getKeyForPath(expr, metadata);
+		}
+
 		Path<?> parent = metadata.getParent();
 		MongoPersistentEntity<?> entity = mappingContext.getPersistentEntity(parent.getType());
 		MongoPersistentProperty property = entity.getPersistentProperty(metadata.getName());
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/util/DBObjectUtils.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/util/DBObjectUtils.java
@@ -0,0 +1,33 @@
+/*
+ * 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.util;
+
+import com.mongodb.BasicDBList;
+
+/**
+ * @author Thomas Darimont
+ */
+public class DBObjectUtils {
+
+	public static BasicDBList dbList(Object... items) {
+
+		BasicDBList list = new BasicDBList();
+		for (Object item : items) {
+			list.add(item);
+		}
+		return list;
+	}
+}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/util/package-info.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/util/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * 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.
+ */
+/**
+ *
+ * @author Thomas Darimont
+ */
+package org.springframework.data.mongodb.util;
--- a/spring-data-mongodb/src/main/resources/META-INF/spring.schemas
+++ b/spring-data-mongodb/src/main/resources/META-INF/spring.schemas
@@ -2,4 +2,5 @@ http\://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd=org/sprin
 http\://www.springframework.org/schema/data/mongo/spring-mongo-1.1.xsd=org/springframework/data/mongodb/config/spring-mongo-1.1.xsd
 http\://www.springframework.org/schema/data/mongo/spring-mongo-1.2.xsd=org/springframework/data/mongodb/config/spring-mongo-1.2.xsd
 http\://www.springframework.org/schema/data/mongo/spring-mongo-1.3.xsd=org/springframework/data/mongodb/config/spring-mongo-1.3.xsd
-http\://www.springframework.org/schema/data/mongo/spring-mongo.xsd=org/springframework/data/mongodb/config/spring-mongo-1.3.xsd
+http\://www.springframework.org/schema/data/mongo/spring-mongo-1.4.xsd=org/springframework/data/mongodb/config/spring-mongo-1.4.xsd
+http\://www.springframework.org/schema/data/mongo/spring-mongo.xsd=org/springframework/data/mongodb/config/spring-mongo-1.4.xsd
--- a/spring-data-mongodb/src/main/resources/org/springframework/data/mongodb/config/spring-mongo-1.3.xsd
+++ b/spring-data-mongodb/src/main/resources/org/springframework/data/mongodb/config/spring-mongo-1.3.xsd
@@ -181,10 +181,10 @@ The base package in which to scan for entities annotated with @Document
 					</xsd:appinfo>
 				</xsd:annotation>
 			</xsd:attribute>
-			<xsd:attribute name="mongo-ref" type="mongoRef" use="optional">
+			<xsd:attribute name="type-mapper-ref" type="typeMapperRef" use="optional">
 				<xsd:annotation>
 					<xsd:documentation>
-						The reference to a Mongo. Will default to 'mongo'.
+						The reference to a MongoTypeMapper to be used by this MappingMongoConverter.
 					</xsd:documentation>
 				</xsd:annotation>
 			</xsd:attribute>
@@ -195,13 +195,6 @@ The base package in which to scan for entities annotated with @Document
 					</xsd:documentation>
 				</xsd:annotation>
 			</xsd:attribute>
-			<xsd:attribute name="mongo-template-ref" type="mongoTemplateRef" use="optional">
-				<xsd:annotation>
-					<xsd:documentation source="org.springframework.data.mongodb.core.core.MongoTemplate">
-						The reference to a MongoTemplate. Will default to 'mongoTemplate'.
-					</xsd:documentation>
-				</xsd:annotation>
-			</xsd:attribute>
 			<xsd:attribute name="disable-validation" use="optional">
 				<xsd:annotation>
 					<xsd:documentation source="org.springframework.data.mongodb.core.mapping.event.ValidatingMongoEventListener">
@@ -257,6 +250,17 @@ The name of the Mongo object that determines what server to monitor. (by default
 		</xsd:complexType>
 	</xsd:element>

+	<xsd:simpleType name="typeMapperRef">
+		<xsd:annotation>
+			<xsd:appinfo>
+				<tool:annotation kind="ref">
+					<tool:assignable-to type="org.springframework.data.mongodb.core.convert.MongoTypeMapper"/>
+				</tool:annotation>
+			</xsd:appinfo>
+		</xsd:annotation>
+		<xsd:union memberTypes="xsd:string"/>
+	</xsd:simpleType>
+
 	<xsd:simpleType name="mappingContextRef">
 		<xsd:annotation>
 			<xsd:appinfo>
--- a/spring-data-mongodb/src/main/resources/org/springframework/data/mongodb/config/spring-mongo-1.4.xsd
+++ b/spring-data-mongodb/src/main/resources/org/springframework/data/mongodb/config/spring-mongo-1.4.xsd
@@ -0,0 +1,633 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<xsd:schema xmlns="http://www.springframework.org/schema/data/mongo"
+						xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+						xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+						xmlns:beans="http://www.springframework.org/schema/beans"
+						xmlns:tool="http://www.springframework.org/schema/tool"
+						xmlns:context="http://www.springframework.org/schema/context"
+						xmlns:repository="http://www.springframework.org/schema/data/repository"
+						targetNamespace="http://www.springframework.org/schema/data/mongo"
+						elementFormDefault="qualified" attributeFormDefault="unqualified">
+
+	<xsd:import namespace="http://www.springframework.org/schema/beans" />
+	<xsd:import namespace="http://www.springframework.org/schema/tool" />
+	<xsd:import namespace="http://www.springframework.org/schema/context" />
+	<xsd:import namespace="http://www.springframework.org/schema/data/repository"
+				schemaLocation="http://www.springframework.org/schema/data/repository/spring-repository.xsd" />
+
+	<xsd:element name="mongo" type="mongoType">
+		<xsd:annotation>
+			<xsd:documentation source="org.springframework.data.mongodb.core.core.MongoFactoryBean"><![CDATA[
+Defines a Mongo instance used for accessing MongoDB'.
+			]]></xsd:documentation>
+			<xsd:appinfo>
+				<tool:annotation>
+					<tool:exports type="com.mongodb.Mongo"/>
+				</tool:annotation>
+			</xsd:appinfo>
+		</xsd:annotation>
+	</xsd:element>
+
+	<xsd:element name="db-factory">
+		<xsd:annotation>
+			<xsd:documentation><![CDATA[
+Defines a MongoDbFactory for connecting to a specific database
+			]]></xsd:documentation>
+		</xsd:annotation>
+		<xsd:complexType>
+			<xsd:attribute name="id" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The name of the mongo definition (by default "mongoDbFactory").]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="mongo-ref" type="mongoRef" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The reference to a Mongo instance. If not configured a default com.mongodb.Mongo instance will be created.
+					]]>
+					</xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="dbname" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The name of the database to connect to. Default is 'db'.
+							]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="authentication-dbname" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The name of the authentication database to connect to. Default is 'db'.
+							]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="port" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The port to connect to MongoDB server.  Default is 27017
+							]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="host" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The host to connect to a MongoDB server.  Default is localhost
+							]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="username" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The username to use when connecting to a MongoDB server.
+							]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="password" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The password to use when connecting to a MongoDB server.
+							]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="uri" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The Mongo URI string.]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="write-concern">
+				<xsd:annotation>
+					<xsd:documentation>
+					The WriteConcern that will be the default value used when asking the MongoDbFactory for a DB object
+					</xsd:documentation>
+				</xsd:annotation>
+				<xsd:simpleType>
+					<xsd:union memberTypes="writeConcernEnumeration xsd:string"/>
+				</xsd:simpleType>
+			</xsd:attribute>
+		</xsd:complexType>
+	</xsd:element>
+
+	<xsd:attributeGroup name="mongo-repository-attributes">
+		<xsd:attribute name="mongo-template-ref" type="mongoTemplateRef" default="mongoTemplate">
+			<xsd:annotation>
+				<xsd:documentation>
+					The reference to a MongoTemplate. Will default to 'mongoTemplate'.
+				</xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="create-query-indexes" type="xsd:boolean" default="false">
+			<xsd:annotation>
+				<xsd:documentation>
+					Enables creation of indexes for queries that get derived from the method name
+					and thus reference domain class properties. Defaults to false.
+				</xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+	</xsd:attributeGroup>
+
+	<xsd:element name="repositories">
+		<xsd:complexType>
+			<xsd:complexContent>
+				<xsd:extension base="repository:repositories">
+					<xsd:attributeGroup ref="mongo-repository-attributes"/>
+					<xsd:attributeGroup ref="repository:repository-attributes"/>
+				</xsd:extension>
+			</xsd:complexContent>
+		</xsd:complexType>
+	</xsd:element>
+
+	<xsd:element name="mapping-converter">
+		<xsd:annotation>
+			<xsd:documentation><![CDATA[Defines a MongoConverter for getting rich mapping functionality.]]></xsd:documentation>
+			<xsd:appinfo>
+				<tool:exports type="org.springframework.data.mongodb.core.convert.MappingMongoConverter" />
+			</xsd:appinfo>
+		</xsd:annotation>
+		<xsd:complexType>
+			<xsd:sequence>
+				<xsd:element name="custom-converters" minOccurs="0">
+					<xsd:annotation>
+						<xsd:documentation><![CDATA[
+        Top-level element that contains one or more custom converters to be used for mapping
+        domain objects to and from Mongo's DBObject]]>
+						</xsd:documentation>
+					</xsd:annotation>
+					<xsd:complexType>
+						<xsd:sequence>
+							<xsd:element name="converter" type="customConverterType" minOccurs="0" maxOccurs="unbounded"/>
+						</xsd:sequence>
+						<xsd:attribute name="base-package" type="xsd:string" />
+					</xsd:complexType>
+				</xsd:element>
+			</xsd:sequence>
+			<xsd:attribute name="id" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The name of the MappingMongoConverter instance (by default "mappingConverter").]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="base-package" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The base package in which to scan for entities annotated with @Document
+							]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="db-factory-ref" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation>
+						The reference to a DbFactory.
+					</xsd:documentation>
+					<xsd:appinfo>
+						<tool:annotation kind="ref">
+							<tool:assignable-to type="org.springframework.data.mongodb.MongoDbFactory" />
+						</tool:annotation>
+					</xsd:appinfo>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="type-mapper-ref" type="typeMapperRef" use="optional">
+				<xsd:annotation>
+					<xsd:documentation>
+						The reference to a MongoTypeMapper to be used by this MappingMongoConverter.
+					</xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="mapping-context-ref" type="mappingContextRef" use="optional">
+				<xsd:annotation>
+					<xsd:documentation source="org.springframework.data.mapping.model.MappingContext">
+						The reference to a MappingContext. Will default to 'mappingContext'.
+					</xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="disable-validation" use="optional">
+				<xsd:annotation>
+					<xsd:documentation source="org.springframework.data.mongodb.core.mapping.event.ValidatingMongoEventListener">
+						Disables JSR-303 validation on MongoDB documents before they are saved. By default it is set to false.
+					</xsd:documentation>
+				</xsd:annotation>
+				<xsd:simpleType>
+					<xsd:union memberTypes="xsd:boolean xsd:string"/>
+				</xsd:simpleType>
+			</xsd:attribute>
+			<xsd:attribute name="abbreviate-field-names" use="optional" default="false">
+				<xsd:annotation>
+					<xsd:documentation source="org.springframework.data.mongodb.core.mapping.CamelCaseAbbreviatingFieldNamingStrategy">
+						Enables abbreviating the field names for domain class properties to the
+						first character of their camel case names, e.g. fooBar -> fb.
+					</xsd:documentation>
+				</xsd:annotation>
+				<xsd:simpleType>
+					<xsd:union memberTypes="xsd:boolean xsd:string"/>
+				</xsd:simpleType>
+			</xsd:attribute>
+		</xsd:complexType>
+	</xsd:element>
+
+	<xsd:element name="jmx">
+		<xsd:annotation>
+			<xsd:documentation><![CDATA[
+Defines a JMX Model MBeans for monitoring a MongoDB server'.
+			]]></xsd:documentation>
+		</xsd:annotation>
+		<xsd:complexType>
+			<xsd:attribute name="mongo-ref" type="mongoRef" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The name of the Mongo object that determines what server to monitor. (by default "mongo").]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+		</xsd:complexType>
+	</xsd:element>
+	
+	<xsd:element name="auditing">
+		<xsd:annotation>
+			<xsd:appinfo>
+				<tool:annotation>
+					<tool:exports type="org.springframework.data.mongodb.core.mapping.event.AuditingEventListener" />
+					<tool:exports type="org.springframework.data.auditing.IsNewAwareAuditingHandler" />
+				</tool:annotation>
+			</xsd:appinfo>
+		</xsd:annotation>
+		<xsd:complexType>
+			<xsd:attributeGroup ref="repository:auditing-attributes" />
+			<xsd:attribute name="mapping-context-ref" type="mappingContextRef" />
+		</xsd:complexType>
+	</xsd:element>
+
+	<xsd:simpleType name="typeMapperRef">
+		<xsd:annotation>
+			<xsd:appinfo>
+				<tool:annotation kind="ref">
+					<tool:assignable-to type="org.springframework.data.mongodb.core.convert.MongoTypeMapper"/>
+				</tool:annotation>
+			</xsd:appinfo>
+		</xsd:annotation>
+		<xsd:union memberTypes="xsd:string"/>
+	</xsd:simpleType>
+
+	<xsd:simpleType name="mappingContextRef">
+		<xsd:annotation>
+			<xsd:appinfo>
+				<tool:annotation kind="ref">
+					<tool:assignable-to type="org.springframework.data.mapping.model.MappingContext"/>
+				</tool:annotation>
+			</xsd:appinfo>
+		</xsd:annotation>
+		<xsd:union memberTypes="xsd:string"/>
+	</xsd:simpleType>
+
+	<xsd:simpleType name="mongoTemplateRef">
+		<xsd:annotation>
+			<xsd:appinfo>
+				<tool:annotation kind="ref">
+					<tool:assignable-to type="org.springframework.data.mongodb.core.core.MongoTemplate"/>
+				</tool:annotation>
+			</xsd:appinfo>
+		</xsd:annotation>
+		<xsd:union memberTypes="xsd:string"/>
+	</xsd:simpleType>
+
+	<xsd:simpleType name="mongoRef">
+		<xsd:annotation>
+			<xsd:appinfo>
+				<tool:annotation kind="ref">
+					<tool:assignable-to type="org.springframework.data.mongodb.core.core.MongoFactoryBean"/>
+				</tool:annotation>
+			</xsd:appinfo>
+		</xsd:annotation>
+		<xsd:union memberTypes="xsd:string"/>
+	</xsd:simpleType>
+	
+	<xsd:simpleType name="sslSocketFactoryRef">
+	<xsd:annotation>
+			<xsd:appinfo>
+				<tool:annotation kind="ref">
+					<tool:assignable-to type="javax.net.ssl.SSLSocketFactory"/>
+				</tool:annotation>
+			</xsd:appinfo>
+		</xsd:annotation>
+		<xsd:union memberTypes="xsd:string"/>
+	</xsd:simpleType>
+
+	<xsd:simpleType name="writeConcernEnumeration">
+		<xsd:restriction base="xsd:token">
+			<xsd:enumeration value="NONE" />
+			<xsd:enumeration value="NORMAL" />
+			<xsd:enumeration value="SAFE" />
+			<xsd:enumeration value="FSYNC_SAFE" />
+			<xsd:enumeration value="REPLICAS_SAFE" />
+			<xsd:enumeration value="JOURNAL_SAFE" />
+			<xsd:enumeration value="MAJORITY" />
+		</xsd:restriction>
+	</xsd:simpleType>
+	<!--  MLP
+	<xsd:attributeGroup name="writeConcern">
+		<xsd:attribute name="write-concern">
+			<xsd:simpleType>
+				<xsd:restriction base="xsd:string">
+					<xsd:enumeration value="NONE" />
+					<xsd:enumeration value="NORMAL" />
+					<xsd:enumeration value="SAFE" />
+					<xsd:enumeration value="FSYNC_SAFE" />
+					<xsd:enumeration value="REPLICA_SAFE" />
+					<xsd:enumeration value="JOURNAL_SAFE" />
+					<xsd:enumeration value="MAJORITY" />
+				</xsd:restriction>
+			</xsd:simpleType>
+		</xsd:attribute>
+	</xsd:attributeGroup>
+	-->
+	<xsd:complexType name="mongoType">
+		<xsd:sequence minOccurs="0" maxOccurs="1">
+			<xsd:element name="options" type="optionsType">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The Mongo driver options
+							]]></xsd:documentation>
+					<xsd:appinfo>
+						<tool:annotation>
+							<tool:exports type="com.mongodb.MongoOptions"/>
+						</tool:annotation>
+					</xsd:appinfo>
+				</xsd:annotation>
+			</xsd:element>
+		</xsd:sequence>
+			<xsd:attribute name="write-concern">
+				<xsd:annotation>
+					<xsd:documentation>
+					The WriteConcern that will be the default value used when asking the MongoDbFactory for a DB object
+					</xsd:documentation>
+				</xsd:annotation>
+				<xsd:simpleType>
+					<xsd:union memberTypes="writeConcernEnumeration xsd:string"/>
+				</xsd:simpleType>
+			</xsd:attribute>		
+		<!-- MLP 
+		<xsd:attributeGroup ref="writeConcern" />
+		-->
+		<xsd:attribute name="id" type="xsd:string" use="optional">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The name of the mongo definition (by default "mongo").]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="port" type="xsd:string" use="optional">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The port to connect to MongoDB server.  Default is 27017
+							]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="host" type="xsd:string" use="optional">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The host to connect to a MongoDB server.  Default is localhost
+							]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="replica-set" type="xsd:string" use="optional">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The comma delimited list of host:port entries to use for replica set/pairs.
+							]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>				
+	</xsd:complexType>
+
+	<xsd:complexType name="optionsType">
+		<xsd:attribute name="connections-per-host" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The number of connections allowed per host.  Will block if run out.	 Default is 10.  System property MONGO.POOLSIZE can override	
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="threads-allowed-to-block-for-connection-multiplier" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The multiplier for connectionsPerHost for # of threads that can block.  Default is 5.
+If connectionsPerHost is 10, and threadsAllowedToBlockForConnectionMultiplier is 5, 
+then 50 threads can block more than that and an exception will be thrown.			
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="max-wait-time" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The max wait time of a blocking thread for a connection. Default is 12000 ms (2 minutes)	
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="connect-timeout" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The connect timeout in milliseconds. 0 is default and infinite.	
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="socket-timeout" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The socket timeout.  0 is default and infinite.
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="socket-keep-alive" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The keep alive flag, controls whether or not to have socket keep alive timeout.  Defaults to false.
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>		
+		<xsd:attribute name="auto-connect-retry" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+This controls whether or not on a connect, the system retries automatically.  Default is false. 
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="max-auto-connect-retry-time" type="xsd:long">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The maximum amount of time in millisecons to spend retrying to open connection to the same server. Default is 0, which means to use the default 15s if autoConnectRetry is on. 
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="write-number" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+This specifies the number of servers to wait for on the write operation, and exception raising behavior.  The 'w' option to the getlasterror command.  Defaults to 0.
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="write-timeout" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+This controls timeout for write operations in milliseconds.  The 'wtimeout' option to the getlasterror command.  Defaults to 0 (indefinite).  Greater than zero is number of milliseconds to wait.
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="write-fsync" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+This controls whether or not to fsync.  The 'fsync' option to the getlasterror command. Defaults to false.
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>						
+		<xsd:attribute name="slave-ok" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+This controls if the driver is allowed to read from secondaries or slaves.  Defaults to false.
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>				
+		<xsd:attribute name="ssl" type="xsd:boolean">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+This controls if the driver should us an SSL connection.  Defaults to false.
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+		<xsd:attribute name="ssl-socket-factory-ref" type="sslSocketFactoryRef" use="optional">
+			<xsd:annotation>
+				<xsd:documentation><![CDATA[
+The SSLSocketFactory to use for the SSL connection. If none is configured here, SSLSocketFactory#getDefault() will be used.
+				]]></xsd:documentation>
+			</xsd:annotation>
+		</xsd:attribute>
+	</xsd:complexType>
+
+	<xsd:group name="beanElementGroup">
+		<xsd:choice>
+			<xsd:element ref="beans:bean"/>
+			<xsd:element ref="beans:ref"/>
+		</xsd:choice>
+	</xsd:group>
+
+	<xsd:complexType name="customConverterType">
+		<xsd:annotation>
+			<xsd:documentation><![CDATA[
+  Element defining a custom converterr.
+      ]]></xsd:documentation>
+		</xsd:annotation>
+		<xsd:group ref="beanElementGroup" minOccurs="0" maxOccurs="1"/>
+		<xsd:attribute name="ref" type="xsd:string">
+			<xsd:annotation>
+				<xsd:documentation>
+					A reference to a custom converter.
+				</xsd:documentation>
+				<xsd:appinfo>
+					<tool:annotation kind="ref"/>
+				</xsd:appinfo>
+			</xsd:annotation>
+		</xsd:attribute>
+	</xsd:complexType>
+
+	<xsd:simpleType name="converterRef">
+		<xsd:annotation>
+			<xsd:appinfo>
+				<tool:annotation kind="ref">
+					<tool:assignable-to type="org.springframework.data.mongodb.core.convert.MongoConverter"/>
+				</tool:annotation>
+			</xsd:appinfo>
+		</xsd:annotation>
+		<xsd:union memberTypes="xsd:string"/>
+	</xsd:simpleType>
+
+	<xsd:element name="template">
+		<xsd:annotation>
+			<xsd:documentation><![CDATA[
+Defines a MongoDbFactory for connecting to a specific database
+			]]></xsd:documentation>
+		</xsd:annotation>
+		<xsd:complexType>
+			<xsd:attribute name="id" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The name of the mongo definition (by default "mongoDbFactory").]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="converter-ref" type="converterRef" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The reference to a Mongoconverter instance.
+					]]>
+					</xsd:documentation>
+					<xsd:appinfo>
+						<tool:annotation kind="ref">
+							<tool:assignable-to type="org.springframework.data.mongodb.core.convert.MongoConverter"/>
+						</tool:annotation>
+					</xsd:appinfo>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="db-factory-ref" type="xsd:string"
+				use="optional">
+				<xsd:annotation>
+					<xsd:documentation>
+						The reference to a DbFactory.
+					</xsd:documentation>
+					<xsd:appinfo>
+						<tool:annotation kind="ref">
+							<tool:assignable-to
+								type="org.springframework.data.mongodb.MongoDbFactory" />
+						</tool:annotation>
+					</xsd:appinfo>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="write-concern">
+				<xsd:annotation>
+					<xsd:documentation>
+					The WriteConcern that will be the default value used when asking the MongoDbFactory for a DB object
+					</xsd:documentation>
+				</xsd:annotation>
+				<xsd:simpleType>
+					<xsd:union memberTypes="writeConcernEnumeration xsd:string"/>
+				</xsd:simpleType>
+			</xsd:attribute>
+		</xsd:complexType>
+	</xsd:element>
+	
+	<xsd:element name="gridFsTemplate">
+		<xsd:annotation>
+			<xsd:documentation><![CDATA[
+Defines a MongoDbFactory for connecting to a specific database
+			]]></xsd:documentation>
+		</xsd:annotation>
+		<xsd:complexType>
+			<xsd:attribute name="id" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The name of the mongo definition (by default "mongoDbFactory").]]></xsd:documentation>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="converter-ref" type="converterRef" use="optional">
+				<xsd:annotation>
+					<xsd:documentation><![CDATA[
+The reference to a Mongoconverter instance.
+					]]>
+					</xsd:documentation>
+					<xsd:appinfo>
+						<tool:annotation kind="ref">
+							<tool:assignable-to type="org.springframework.data.mongodb.core.convert.MongoConverter"/>
+						</tool:annotation>
+					</xsd:appinfo>
+				</xsd:annotation>
+			</xsd:attribute>
+			<xsd:attribute name="db-factory-ref" type="xsd:string" use="optional">
+				<xsd:annotation>
+					<xsd:documentation>
+						The reference to a DbFactory.
+					</xsd:documentation>
+					<xsd:appinfo>
+						<tool:annotation kind="ref">
+							<tool:assignable-to type="org.springframework.data.mongodb.MongoDbFactory" />
+						</tool:annotation>
+					</xsd:appinfo>
+				</xsd:annotation>
+			</xsd:attribute>
+		</xsd:complexType>
+	</xsd:element>
+</xsd:schema>
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/AbstractIntegrationTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/AbstractIntegrationTests.java
@@ -0,0 +1,78 @@
+/*
+ * 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.config;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.dao.DataAccessException;
+import org.springframework.data.mongodb.core.CollectionCallback;
+import org.springframework.data.mongodb.core.MongoOperations;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+import com.mongodb.BasicDBObject;
+import com.mongodb.DBCollection;
+import com.mongodb.Mongo;
+import com.mongodb.MongoClient;
+import com.mongodb.MongoException;
+
+/**
+ * @author Oliver Gierke
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration
+public abstract class AbstractIntegrationTests {
+
+	@Configuration
+	static class TestConfig extends AbstractMongoConfiguration {
+
+		@Override
+		protected String getDatabaseName() {
+			return "database";
+		}
+
+		@Override
+		public Mongo mongo() throws Exception {
+			return new MongoClient();
+		}
+	}
+
+	@Autowired MongoOperations operations;
+
+	@Before
+	@After
+	public void cleanUp() {
+
+		for (String collectionName : operations.getCollectionNames()) {
+			if (!collectionName.startsWith("system")) {
+				operations.execute(collectionName, new CollectionCallback<Void>() {
+					@Override
+					public Void doInCollection(DBCollection collection) throws MongoException, DataAccessException {
+						collection.remove(new BasicDBObject());
+						assertThat(collection.find().hasNext(), is(false));
+						return null;
+					}
+				});
+			}
+		}
+	}
+}
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/AbstractMongoConfigurationUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/AbstractMongoConfigurationUnitTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 the original author or authors.
+ * Copyright 2012-2013 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.
@@ -23,8 +23,12 @@ import org.junit.Test;
 import org.junit.rules.ExpectedException;
 import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.support.AbstractApplicationContext;
 import org.springframework.data.mongodb.MongoDbFactory;
+import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
+import org.springframework.data.mongodb.core.convert.MongoTypeMapper;
 import org.springframework.data.mongodb.core.mapping.BasicMongoPersistentEntity;
 import org.springframework.data.mongodb.core.mapping.Document;
 import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
@@ -32,11 +36,13 @@ import org.springframework.expression.spel.support.StandardEvaluationContext;
 import org.springframework.test.util.ReflectionTestUtils;

 import com.mongodb.Mongo;
+import com.mongodb.MongoClient;

 /**
 * Unit tests for {@link AbstractMongoConfiguration}.
 * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public class AbstractMongoConfigurationUnitTests {

@@ -80,12 +86,13 @@ public class AbstractMongoConfigurationUnitTests {
 	@Test
 	public void containsMongoDbFactoryButNoMongoBean() {

-		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(SampleMongoConfiguration.class);
+		AbstractApplicationContext context = new AnnotationConfigApplicationContext(SampleMongoConfiguration.class);

 		assertThat(context.getBean(MongoDbFactory.class), is(notNullValue()));

 		exception.expect(NoSuchBeanDefinitionException.class);
 		context.getBean(Mongo.class);
+		context.close();
 	}

 	@Test
@@ -105,12 +112,36 @@ public class AbstractMongoConfigurationUnitTests {
 	@Test
 	public void lifecycleCallbacksAreInvokedInAppropriateOrder() {

-		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(SampleMongoConfiguration.class);
+		AbstractApplicationContext context = new AnnotationConfigApplicationContext(SampleMongoConfiguration.class);
 		MongoMappingContext mappingContext = context.getBean(MongoMappingContext.class);
 		BasicMongoPersistentEntity<?> entity = mappingContext.getPersistentEntity(Entity.class);
 		StandardEvaluationContext spElContext = (StandardEvaluationContext) ReflectionTestUtils.getField(entity, "context");

 		assertThat(spElContext.getBeanResolver(), is(notNullValue()));
+		context.close();
+	}
+
+	/**
+	 * @see DATAMONGO-725
+	 */
+	@Test
+	public void shouldBeAbleToConfigureCustomTypeMapperViaJavaConfig() {
+
+		AbstractApplicationContext context = new AnnotationConfigApplicationContext(SampleMongoConfiguration.class);
+		MongoTypeMapper typeMapper = context.getBean(CustomMongoTypeMapper.class);
+		MappingMongoConverter mmc = context.getBean(MappingMongoConverter.class);
+
+		assertThat(mmc, is(notNullValue()));
+		assertThat(mmc.getTypeMapper(), is(typeMapper));
+		context.close();
+	}
+
+	/**
+	 * @see DATAMONGO-789
+	 */
+	@Test
+	public void authenticationDatabaseShouldDefaultToNull() {
+		assertThat(new SampleMongoConfiguration().getAuthenticationDatabaseName(), is(nullValue()));
 	}

 	private static void assertScanningDisabled(final String value) throws ClassNotFoundException {
@@ -136,7 +167,20 @@ public class AbstractMongoConfigurationUnitTests {

 		@Override
 		public Mongo mongo() throws Exception {
-			return new Mongo();
+			return new MongoClient();
+		}
+
+		@Bean
+		@Override
+		public MappingMongoConverter mappingMongoConverter() throws Exception {
+			MappingMongoConverter mmc = super.mappingMongoConverter();
+			mmc.setTypeMapper(typeMapper());
+			return mmc;
+		}
+
+		@Bean
+		public MongoTypeMapper typeMapper() {
+			return new CustomMongoTypeMapper();
 		}
 	}

--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/AuditingIntegrationTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/AuditingIntegrationTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 the original author or authors.
+ * Copyright 2012-2013 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.
@@ -20,7 +20,7 @@ import static org.junit.Assert.*;

 import org.joda.time.DateTime;
 import org.junit.Test;
-import org.springframework.context.ApplicationContext;
+import org.springframework.context.support.AbstractApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 import org.springframework.data.annotation.CreatedDate;
 import org.springframework.data.annotation.Id;
@@ -35,9 +35,9 @@ import org.springframework.data.mongodb.core.mapping.event.BeforeConvertEvent;
 public class AuditingIntegrationTests {

 	@Test
-	public void enablesAuditingAndSetsPropertiesAccordingly() {
+	public void enablesAuditingAndSetsPropertiesAccordingly() throws Exception {

-		ApplicationContext context = new ClassPathXmlApplicationContext("auditing.xml", getClass());
+		AbstractApplicationContext context = new ClassPathXmlApplicationContext("auditing.xml", getClass());

 		Entity entity = new Entity();
 		BeforeConvertEvent<Entity> event = new BeforeConvertEvent<Entity>(entity);
@@ -46,23 +46,20 @@ public class AuditingIntegrationTests {
 		assertThat(entity.created, is(notNullValue()));
 		assertThat(entity.modified, is(entity.created));

+		Thread.sleep(10);
 		entity.id = 1L;
 		event = new BeforeConvertEvent<Entity>(entity);
 		context.publishEvent(event);

 		assertThat(entity.created, is(notNullValue()));
 		assertThat(entity.modified, is(not(entity.created)));
+		context.close();
 	}

 	class Entity {

-		@CreatedDate
-		DateTime created;
-
-		@LastModifiedDate
-		DateTime modified;
-
-		@Id
-		Long id;
+		@CreatedDate DateTime created;
+		@LastModifiedDate DateTime modified;
+		@Id Long id;
 	}
 }
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/AuditingViaJavaConfigRepositoriesTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/AuditingViaJavaConfigRepositoriesTests.java
@@ -0,0 +1,101 @@
+/*
+ * 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.config;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+import static org.mockito.Mockito.*;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.domain.AuditorAware;
+import org.springframework.data.mongodb.core.AuditablePerson;
+import org.springframework.data.mongodb.core.MongoOperations;
+import org.springframework.data.mongodb.core.MongoTemplate;
+import org.springframework.data.mongodb.core.SimpleMongoDbFactory;
+import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
+import org.springframework.data.mongodb.repository.MongoRepository;
+import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;
+import org.springframework.stereotype.Repository;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+import com.mongodb.MongoClient;
+
+/**
+ * Integration tests for auditing via Java config.
+ * 
+ * @author Thomas Darimont
+ * @author Oliver Gierke
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration
+public class AuditingViaJavaConfigRepositoriesTests {
+
+	@Autowired AuditablePersonRepository auditablePersonRepository;
+	@Autowired AuditorAware<AuditablePerson> auditorAware;
+	AuditablePerson auditor;
+
+	@Configuration
+	@EnableMongoAuditing(auditorAwareRef = "auditorProvider")
+	@EnableMongoRepositories(basePackageClasses = AuditablePersonRepository.class, considerNestedRepositories = true)
+	static class Config {
+
+		@Bean
+		public MongoOperations mongoTemplate() throws Exception {
+			return new MongoTemplate(new SimpleMongoDbFactory(new MongoClient(), "database"));
+		}
+
+		@Bean
+		public MongoMappingContext mappingContext() {
+			return new MongoMappingContext();
+		}
+
+		@Bean
+		@SuppressWarnings("unchecked")
+		public AuditorAware<AuditablePerson> auditorProvider() {
+			return mock(AuditorAware.class);
+		}
+	}
+
+	@Before
+	public void setup() {
+		auditablePersonRepository.deleteAll();
+		this.auditor = auditablePersonRepository.save(new AuditablePerson("auditor"));
+	}
+
+	@Test
+	public void basicAuditing() {
+
+		doReturn(this.auditor).when(this.auditorAware).getCurrentAuditor();
+
+		AuditablePerson user = new AuditablePerson("user");
+
+		AuditablePerson savedUser = auditablePersonRepository.save(user);
+		System.out.println(savedUser);
+
+		AuditablePerson createdBy = savedUser.getCreatedBy();
+		assertThat(createdBy, is(notNullValue()));
+		assertThat(createdBy.getFirstname(), is(this.auditor.getFirstname()));
+	}
+
+	@Repository
+	static interface AuditablePersonRepository extends MongoRepository<AuditablePerson, String> {}
+}
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/CustomMongoTypeMapper.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/CustomMongoTypeMapper.java
@@ -0,0 +1,23 @@
+/*
+ * 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.config;
+
+import org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper;
+
+/**
+ * @author Thomas Darimont
+ */
+class CustomMongoTypeMapper extends DefaultMongoTypeMapper {}
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MappingMongoConverterParserIntegrationTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MappingMongoConverterParserIntegrationTests.java
@@ -31,6 +31,8 @@ import org.springframework.core.convert.converter.Converter;
 import org.springframework.core.convert.converter.GenericConverter;
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.data.mongodb.core.convert.CustomConversions;
+import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
+import org.springframework.data.mongodb.core.convert.MongoTypeMapper;
 import org.springframework.data.mongodb.core.mapping.Account;
 import org.springframework.data.mongodb.core.mapping.CamelCaseAbbreviatingFieldNamingStrategy;
 import org.springframework.data.mongodb.repository.Person;
@@ -42,6 +44,7 @@ import com.mongodb.DBObject;
 * Integration tests for {@link MappingMongoConverterParser}.
 * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public class MappingMongoConverterParserIntegrationTests {

@@ -61,6 +64,15 @@ public class MappingMongoConverterParserIntegrationTests {
 		factory.getBean("converter");
 	}

+	@Test
+	public void hasCustomTypeMapper() {
+
+		MappingMongoConverter converter = factory.getBean("converter", MappingMongoConverter.class);
+		MongoTypeMapper customMongoTypeMapper = factory.getBean(CustomMongoTypeMapper.class);
+
+		assertThat(converter.getTypeMapper(), is(customMongoTypeMapper));
+	}
+
 	@Test
 	public void scansForConverterAndSetsUpCustomConversionsAccordingly() {

--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MappingMongoConverterParserValidationIntegrationTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MappingMongoConverterParserValidationIntegrationTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 the original author or authors.
+ * Copyright 2012-2013 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.
@@ -33,6 +33,7 @@ import org.springframework.core.io.ClassPathResource;
 * 
 * @see DATAMONGO-36
 * @author Maciej Walkowiak
+ * @author Thomas Darimont
 */
 public class MappingMongoConverterParserValidationIntegrationTests {

@@ -65,4 +66,11 @@ public class MappingMongoConverterParserValidationIntegrationTests {
 		reader.loadBeanDefinitions(new ClassPathResource("namespace/converter-validation-disabled.xml"));
 		factory.getBean(BeanNames.VALIDATING_EVENT_LISTENER);
 	}
+
+	@Test
+	public void validatingEventListenerCreatedWithCustomTypeMapperConfig() {
+
+		reader.loadBeanDefinitions(new ClassPathResource("namespace/converter-custom-typeMapper.xml"));
+		assertThat(factory.getBean(BeanNames.VALIDATING_EVENT_LISTENER), is(not(nullValue())));
+	}
 }
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MongoAuditingRegistrarUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MongoAuditingRegistrarUnitTests.java
@@ -0,0 +1,48 @@
+/*
+ * 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.config;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.runners.MockitoJUnitRunner;
+import org.springframework.beans.factory.support.BeanDefinitionRegistry;
+import org.springframework.core.type.AnnotationMetadata;
+
+/**
+ * Unit tests for {@link JpaAuditingRegistrar}.
+ * 
+ * @see DATAMONGO-792
+ * @author Oliver Gierke
+ */
+@RunWith(MockitoJUnitRunner.class)
+public class MongoAuditingRegistrarUnitTests {
+
+	MongoAuditingRegistrar registrar = new MongoAuditingRegistrar();
+
+	@Mock AnnotationMetadata metadata;
+	@Mock BeanDefinitionRegistry registry;
+
+	@Test(expected = IllegalArgumentException.class)
+	public void rejectsNullAnnotationMetadata() {
+		registrar.registerBeanDefinitions(null, registry);
+	}
+
+	@Test(expected = IllegalArgumentException.class)
+	public void rejectsNullBeanDefinitionRegistry() {
+		registrar.registerBeanDefinitions(metadata, null);
+	}
+}
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MongoDbFactoryParserIntegrationTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MongoDbFactoryParserIntegrationTests.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,
@@ -27,7 +27,7 @@ import org.springframework.beans.factory.parsing.BeanDefinitionParsingException;
 import org.springframework.beans.factory.support.BeanDefinitionReader;
 import org.springframework.beans.factory.support.DefaultListableBeanFactory;
 import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
-import org.springframework.context.ApplicationContext;
+import org.springframework.context.support.AbstractApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.data.mongodb.MongoDbFactory;
@@ -36,6 +36,7 @@ import org.springframework.test.util.ReflectionTestUtils;

 import com.mongodb.DB;
 import com.mongodb.Mongo;
+import com.mongodb.MongoClient;
 import com.mongodb.MongoURI;
 import com.mongodb.WriteConcern;

@@ -57,9 +58,11 @@ public class MongoDbFactoryParserIntegrationTests {

 	@Test
 	public void testWriteConcern() throws Exception {
-		SimpleMongoDbFactory dbFactory = new SimpleMongoDbFactory(new Mongo("localhost"), "database");
+
+		SimpleMongoDbFactory dbFactory = new SimpleMongoDbFactory(new MongoClient("localhost"), "database");
 		dbFactory.setWriteConcern(WriteConcern.SAFE);
 		dbFactory.getDb();
+
 		assertThat(ReflectionTestUtils.getField(dbFactory, "writeConcern"), is((Object) WriteConcern.SAFE));
 	}

@@ -82,11 +85,13 @@ public class MongoDbFactoryParserIntegrationTests {
 	@Test
 	public void readsReplicasWriteConcernCorrectly() {

-		ApplicationContext ctx = new ClassPathXmlApplicationContext("namespace/db-factory-bean-custom-write-concern.xml");
+		AbstractApplicationContext ctx = new ClassPathXmlApplicationContext(
+				"namespace/db-factory-bean-custom-write-concern.xml");
 		MongoDbFactory factory = ctx.getBean("second", MongoDbFactory.class);
 		DB db = factory.getDb();

 		assertThat(db.getWriteConcern(), is(WriteConcern.REPLICAS_SAFE));
+		ctx.close();
 	}

 	private void assertWriteConcern(ClassPathXmlApplicationContext ctx, WriteConcern expectedWriteConcern) {
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MongoNamespaceTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MongoNamespaceTests.java
@@ -18,6 +18,8 @@ package org.springframework.data.mongodb.config;
 import static org.junit.Assert.*;
 import static org.springframework.test.util.ReflectionTestUtils.*;

+import javax.net.ssl.SSLSocketFactory;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -41,13 +43,13 @@ import com.mongodb.WriteConcern;
 * @author Mark Pollack
 * @author Oliver Gierke
 * @author Martin Baumgartner
+ * @author Thomas Darimont
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
 public class MongoNamespaceTests {

-	@Autowired
-	private ApplicationContext ctx;
+	@Autowired ApplicationContext ctx;

 	@Test
 	public void testMongoSingleton() throws Exception {
@@ -59,12 +61,46 @@ public class MongoNamespaceTests {

 	@Test
 	public void testMongoSingletonWithAttributes() throws Exception {
+
 		assertTrue(ctx.containsBean("defaultMongo"));
 		MongoFactoryBean mfb = (MongoFactoryBean) ctx.getBean("&defaultMongo");
 		String host = (String) getField(mfb, "host");
 		Integer port = (Integer) getField(mfb, "port");
 		assertEquals("localhost", host);
 		assertEquals(new Integer(27017), port);
+
+		MongoOptions options = (MongoOptions) getField(mfb, "mongoOptions");
+		assertFalse("By default socketFactory should not be a SSLSocketFactory",
+				options.getSocketFactory() instanceof SSLSocketFactory);
+	}
+
+	/**
+	 * @see DATAMONGO-764
+	 */
+	@Test
+	public void testMongoSingletonWithSslEnabled() throws Exception {
+
+		assertTrue(ctx.containsBean("mongoSsl"));
+		MongoFactoryBean mfb = (MongoFactoryBean) ctx.getBean("&mongoSsl");
+
+		MongoOptions options = (MongoOptions) getField(mfb, "mongoOptions");
+		assertTrue("socketFactory should be a SSLSocketFactory", options.getSocketFactory() instanceof SSLSocketFactory);
+	}
+
+	/**
+	 * @see DATAMONGO-764
+	 */
+	@Test
+	public void testMongoSingletonWithSslEnabledAndCustomSslSocketFactory() throws Exception {
+
+		assertTrue(ctx.containsBean("mongoSslWithCustomSslFactory"));
+		MongoFactoryBean mfb = (MongoFactoryBean) ctx.getBean("&mongoSslWithCustomSslFactory");
+
+		SSLSocketFactory customSslSocketFactory = ctx.getBean("customSslSocketFactory", SSLSocketFactory.class);
+		MongoOptions options = (MongoOptions) getField(mfb, "mongoOptions");
+
+		assertTrue("socketFactory should be a SSLSocketFactory", options.getSocketFactory() instanceof SSLSocketFactory);
+		assertSame(customSslSocketFactory, options.getSocketFactory());
 	}

 	@Test
@@ -78,6 +114,24 @@ public class MongoNamespaceTests {
 		assertEquals("database", getField(dbf, "databaseName"));
 	}

+	/**
+	 * @see DATAMONGO-789
+	 */
+	@Test
+	public void testThirdMongoDbFactory() {
+
+		assertTrue(ctx.containsBean("thirdMongoDbFactory"));
+
+		MongoDbFactory dbf = (MongoDbFactory) ctx.getBean("thirdMongoDbFactory");
+		Mongo mongo = (Mongo) getField(dbf, "mongo");
+
+		assertEquals("localhost", mongo.getAddress().getHost());
+		assertEquals(27017, mongo.getAddress().getPort());
+		assertEquals(new UserCredentials("joe", "secret"), getField(dbf, "credentials"));
+		assertEquals("database", getField(dbf, "databaseName"));
+		assertEquals("admin", getField(dbf, "authenticationDatabaseName"));
+	}
+
 	/**
 	 * @see DATAMONGO-140
 	 */
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MongoParserIntegrationTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/config/MongoParserIntegrationTests.java
@@ -27,6 +27,7 @@ import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionReader;
 import org.springframework.beans.factory.support.DefaultListableBeanFactory;
 import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
+import org.springframework.context.support.AbstractApplicationContext;
 import org.springframework.context.support.GenericApplicationContext;
 import org.springframework.core.io.ClassPathResource;

@@ -44,8 +45,9 @@ public class MongoParserIntegrationTests {

 	@Before
 	public void setUp() {
-		factory = new DefaultListableBeanFactory();
-		reader = new XmlBeanDefinitionReader(factory);
+
+		this.factory = new DefaultListableBeanFactory();
+		this.reader = new XmlBeanDefinitionReader(factory);
 	}

 	@Test
@@ -68,9 +70,10 @@ public class MongoParserIntegrationTests {

 		reader.loadBeanDefinitions(new ClassPathResource("namespace/mongo-bean.xml"));

-		GenericApplicationContext context = new GenericApplicationContext(factory);
+		AbstractApplicationContext context = new GenericApplicationContext(factory);
 		context.refresh();

 		assertThat(context.getBean("mongo2", Mongo.class), is(notNullValue()));
+		context.close();
 	}
 }
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/AuditablePerson.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/AuditablePerson.java
@@ -0,0 +1,62 @@
+/*
+ * 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.core;
+
+import org.springframework.data.annotation.CreatedBy;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.mongodb.core.mapping.DBRef;
+
+/**
+ * Domain class for auditing functionality testing.
+ * 
+ * @author Thomas Darimont
+ */
+public class AuditablePerson {
+
+	@Id private String id;
+	private String firstname;
+	@DBRef @CreatedBy private AuditablePerson createdBy;
+
+	public AuditablePerson() {}
+
+	public AuditablePerson(String firstName) {
+		this.firstname = firstName;
+	}
+
+	public String getId() {
+		return id;
+	}
+
+	public void setId(String id) {
+		this.id = id;
+	}
+
+	public String getFirstname() {
+		return firstname;
+	}
+
+	public void setFirstname(String firstName) {
+		this.firstname = firstName;
+	}
+
+	public AuditablePerson getCreatedBy() {
+		return createdBy;
+	}
+
+	public void setCreatedBy(AuditablePerson createdBy) {
+		this.createdBy = createdBy;
+	}
+}
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/DBObjectTestUtils.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/DBObjectTestUtils.java
@@ -26,9 +26,9 @@ import com.mongodb.DBObject;
 * 
 * @author Oliver Gierke
 */
-public abstract class DBObjectUtils {
+public abstract class DBObjectTestUtils {

-	private DBObjectUtils() {
+	private DBObjectTestUtils() {

 	}

--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/JmxServer.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/JmxServer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2010 the original author or authors.
+ * Copyright 2002-2013 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.
@@ -13,7 +13,6 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-
 package org.springframework.data.mongodb.core;

 import org.springframework.context.support.ClassPathXmlApplicationContext;
@@ -22,6 +21,7 @@ import org.springframework.context.support.ClassPathXmlApplicationContext;
 * Server application than can be run as an app or unit test.
 * 
 * @author Mark Pollack
+ * @author Oliver Gierke
 */
 public class JmxServer {

@@ -29,8 +29,8 @@ public class JmxServer {
 		new JmxServer().run();
 	}

+	@SuppressWarnings("resource")
 	public void run() {
 		new ClassPathXmlApplicationContext(new String[] { "infrastructure.xml", "server-jmx.xml" });
 	}
-
 }
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoDbUtilsIntegrationTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoDbUtilsIntegrationTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 the original author or authors.
+ * Copyright 2012-2013 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.
@@ -32,15 +32,18 @@ import org.springframework.scheduling.concurrent.ThreadPoolExecutorFactoryBean;

 import com.mongodb.DB;
 import com.mongodb.Mongo;
+import com.mongodb.MongoClient;
 import com.mongodb.MongoException;

 /**
 * Integration tests for {@link MongoDbUtils}.
 * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public class MongoDbUtilsIntegrationTests {

+	static final String AUTHENTICATION_DATABASE_NAME = "admin";
 	static final String DATABASE_NAME = "dbAuthTests";
 	static final UserCredentials CREDENTIALS = new UserCredentials("admin", "admin");

@@ -54,17 +57,9 @@ public class MongoDbUtilsIntegrationTests {
 	@BeforeClass
 	public static void setUp() throws Exception {

-		mongo = new Mongo();
+		mongo = new MongoClient();
 		template = new MongoTemplate(mongo, DATABASE_NAME);

-		// Create sample user
-		template.execute(new DbCallback<Void>() {
-			public Void doInDB(DB db) throws MongoException, DataAccessException {
-				db.addUser("admin", "admin".toCharArray());
-				return null;
-			}
-		});
-
 		factory = new ThreadPoolExecutorFactoryBean();
 		factory.setCorePoolSize(2);
 		factory.setMaxPoolSize(10);
@@ -95,6 +90,14 @@ public class MongoDbUtilsIntegrationTests {
 	@Test
 	public void authenticatesCorrectlyInMultithreadedEnvironment() throws Exception {

+		// Create sample user
+		template.execute(new DbCallback<Void>() {
+			public Void doInDB(DB db) throws MongoException, DataAccessException {
+				db.addUser("admin", "admin".toCharArray());
+				return null;
+			}
+		});
+
 		Callable<Void> callable = new Callable<Void>() {
 			public Void call() throws Exception {

@@ -121,4 +124,45 @@ public class MongoDbUtilsIntegrationTests {
 			fail("Exception occurred!" + exception);
 		}
 	}
+
+	/**
+	 * @see DATAMONGO-789
+	 */
+	@Test
+	public void authenticatesCorrectlyWithAuthenticationDB() throws Exception {
+
+		// Create sample user
+		template.execute(new DbCallback<Void>() {
+			public Void doInDB(DB db) throws MongoException, DataAccessException {
+				db.getSisterDB("admin").addUser("admin", "admin".toCharArray());
+				return null;
+			}
+		});
+
+		Callable<Void> callable = new Callable<Void>() {
+			public Void call() throws Exception {
+
+				try {
+					DB db = MongoDbUtils.getDB(mongo, DATABASE_NAME, CREDENTIALS, AUTHENTICATION_DATABASE_NAME);
+					assertThat(db, is(notNullValue()));
+				} catch (Exception o_O) {
+					MongoDbUtilsIntegrationTests.this.exception = o_O;
+				}
+
+				return null;
+			}
+		};
+
+		List<Callable<Void>> callables = new ArrayList<Callable<Void>>();
+
+		for (int i = 0; i < 10; i++) {
+			callables.add(callable);
+		}
+
+		service.invokeAll(callables);
+
+		if (exception != null) {
+			fail("Exception occurred!" + exception);
+		}
+	}
 }
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoDbUtilsUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoDbUtilsUnitTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 the original author or authors.
+ * Copyright 2012-2013 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.
@@ -20,6 +20,8 @@ import static org.junit.Assert.*;
 import static org.mockito.Matchers.*;
 import static org.mockito.Mockito.*;

+import java.util.List;
+
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
@@ -28,7 +30,9 @@ import org.mockito.Mock;
 import org.mockito.invocation.InvocationOnMock;
 import org.mockito.runners.MockitoJUnitRunner;
 import org.mockito.stubbing.Answer;
+import org.springframework.transaction.support.TransactionSynchronization;
 import org.springframework.transaction.support.TransactionSynchronizationManager;
+import org.springframework.transaction.support.TransactionSynchronizationUtils;

 import com.mongodb.DB;
 import com.mongodb.Mongo;
@@ -37,12 +41,12 @@ import com.mongodb.Mongo;
 * Unit tests for {@link MongoDbUtils}.
 * 
 * @author Oliver Gierke
+ * @author Randy Watler
 */
@RunWith(MockitoJUnitRunner.class)
 public class MongoDbUtilsUnitTests {

-	@Mock
-	Mongo mongo;
+	@Mock Mongo mongo;

 	@Before
 	public void setUp() throws Exception {
@@ -81,4 +85,94 @@ public class MongoDbUtilsUnitTests {
 		assertThat(first, is(notNullValue()));
 		assertThat(MongoDbUtils.getDB(mongo, "first"), is(sameInstance(first)));
 	}
+
+	/**
+	 * @see DATAMONGO-737
+	 */
+	@Test
+	public void handlesTransactionSynchronizationLifecycle() {
+
+		// ensure transaction synchronization manager has no registered
+		// transaction synchronizations or bound resources at start of test
+		assertThat(TransactionSynchronizationManager.getSynchronizations().isEmpty(), is(true));
+		assertThat(TransactionSynchronizationManager.getResourceMap().isEmpty(), is(true));
+
+		// access database for one mongo instance, (registers transaction
+		// synchronization and binds transaction resource)
+		MongoDbUtils.getDB(mongo, "first");
+
+		// ensure transaction synchronization manager has registered
+		// transaction synchronizations and bound resources
+		assertThat(TransactionSynchronizationManager.getSynchronizations().isEmpty(), is(false));
+		assertThat(TransactionSynchronizationManager.getResourceMap().isEmpty(), is(false));
+
+		// simulate transaction completion, (unbinds transaction resource)
+		try {
+			simulateTransactionCompletion();
+		} catch (Exception e) {
+			fail("Unexpected exception thrown during transaction completion: " + e);
+		}
+
+		// ensure transaction synchronization manager has no bound resources
+		// at end of test
+		assertThat(TransactionSynchronizationManager.getResourceMap().isEmpty(), is(true));
+	}
+
+	/**
+	 * @see DATAMONGO-737
+	 */
+	@Test
+	public void handlesTransactionSynchronizationsLifecycle() {
+
+		// ensure transaction synchronization manager has no registered
+		// transaction synchronizations or bound resources at start of test
+		assertThat(TransactionSynchronizationManager.getSynchronizations().isEmpty(), is(true));
+		assertThat(TransactionSynchronizationManager.getResourceMap().isEmpty(), is(true));
+
+		// access multiple databases for one mongo instance, (registers
+		// transaction synchronizations and binds transaction resources)
+		MongoDbUtils.getDB(mongo, "first");
+		MongoDbUtils.getDB(mongo, "second");
+
+		// ensure transaction synchronization manager has registered
+		// transaction synchronizations and bound resources
+		assertThat(TransactionSynchronizationManager.getSynchronizations().isEmpty(), is(false));
+		assertThat(TransactionSynchronizationManager.getResourceMap().isEmpty(), is(false));
+
+		// simulate transaction completion, (unbinds transaction resources)
+		try {
+			simulateTransactionCompletion();
+		} catch (Exception e) {
+			fail("Unexpected exception thrown during transaction completion: " + e);
+		}
+
+		// ensure transaction synchronization manager has no bound
+		// transaction resources at end of test
+		assertThat(TransactionSynchronizationManager.getResourceMap().isEmpty(), is(true));
+	}
+
+	/**
+	 * Simulate transaction rollback/commit completion protocol on managed transaction synchronizations which will unbind
+	 * managed transaction resources. Does not swallow exceptions for testing purposes.
+	 * 
+	 * @see TransactionSynchronizationUtils#triggerBeforeCompletion()
+	 * @see TransactionSynchronizationUtils#triggerAfterCompletion(int)
+	 */
+	private void simulateTransactionCompletion() {
+
+		// triggerBeforeCompletion() implementation without swallowed exceptions
+		List<TransactionSynchronization> synchronizations = TransactionSynchronizationManager.getSynchronizations();
+		for (TransactionSynchronization synchronization : synchronizations) {
+			synchronization.beforeCompletion();
+		}
+
+		// triggerAfterCompletion() implementation without swallowed exceptions
+		List<TransactionSynchronization> remainingSynchronizations = TransactionSynchronizationManager
+				.getSynchronizations();
+		if (remainingSynchronizations != null) {
+			for (TransactionSynchronization remainingSynchronization : remainingSynchronizations) {
+				remainingSynchronization.afterCompletion(TransactionSynchronization.STATUS_ROLLED_BACK);
+			}
+		}
+	}
 }
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoExceptionTranslatorUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoExceptionTranslatorUnitTests.java
@@ -23,6 +23,9 @@ import java.net.UnknownHostException;

 import org.junit.Before;
 import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.runners.MockitoJUnitRunner;
 import org.springframework.core.NestedRuntimeException;
 import org.springframework.dao.DataAccessException;
 import org.springframework.dao.DataAccessResourceFailureException;
@@ -43,10 +46,13 @@ import com.mongodb.ServerAddress;
 * @author Michal Vich
 * @author Oliver Gierke
 */
+@RunWith(MockitoJUnitRunner.class)
 public class MongoExceptionTranslatorUnitTests {

 	MongoExceptionTranslator translator;

+	@Mock DuplicateKey exception;
+
 	@Before
 	public void setUp() {
 		translator = new MongoExceptionTranslator();
@@ -55,10 +61,8 @@ public class MongoExceptionTranslatorUnitTests {
 	@Test
 	public void translateDuplicateKey() {

-		DuplicateKey exception = new DuplicateKey(1, "Duplicated key");
 		DataAccessException translatedException = translator.translateExceptionIfPossible(exception);
-
-		expectExceptionWithCauseMessage(translatedException, DuplicateKeyException.class, "Duplicated key");
+		expectExceptionWithCauseMessage(translatedException, DuplicateKeyException.class, null);
 	}

 	@Test
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoOptionsFactoryBeanUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoOptionsFactoryBeanUnitTests.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.
@@ -15,16 +15,20 @@
 */
 package org.springframework.data.mongodb.core;

+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+import javax.net.ssl.SSLSocketFactory;
+
 import org.junit.Test;

 import com.mongodb.MongoOptions;
-import static org.hamcrest.CoreMatchers.*;
-import static org.junit.Assert.*;

 /**
 * Unit tests for {@link MongoOptionsFactoryBean}.
 * 
 * @author Oliver Gierke
+ * @author Mike Saavedra
 */
 public class MongoOptionsFactoryBeanUnitTests {

@@ -41,4 +45,19 @@ public class MongoOptionsFactoryBeanUnitTests {
 		MongoOptions options = bean.getObject();
 		assertThat(options.maxAutoConnectRetryTime, is(27L));
 	}
+
+	/**
+	 * @see DATAMONGO-764
+	 */
+	@Test
+	public void testSslConnection() {
+
+		MongoOptionsFactoryBean bean = new MongoOptionsFactoryBean();
+		bean.setSsl(true);
+		bean.afterPropertiesSet();
+
+		MongoOptions options = bean.getObject();
+		assertNotNull(options.getSocketFactory());
+		assertTrue(options.getSocketFactory() instanceof SSLSocketFactory);
+	}
 }
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoTemplateTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoTemplateTests.java
@@ -22,6 +22,7 @@ import static org.springframework.data.mongodb.core.query.Criteria.*;
 import static org.springframework.data.mongodb.core.query.Query.*;
 import static org.springframework.data.mongodb.core.query.Update.*;

+import java.math.BigInteger;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Date;
@@ -56,6 +57,8 @@ import org.springframework.data.mapping.model.MappingException;
 import org.springframework.data.mongodb.InvalidMongoDbApiUsageException;
 import org.springframework.data.mongodb.MongoDbFactory;
 import org.springframework.data.mongodb.core.convert.CustomConversions;
+import org.springframework.data.mongodb.core.convert.DbRefResolver;
+import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver;
 import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
 import org.springframework.data.mongodb.core.index.Index;
 import org.springframework.data.mongodb.core.index.Index.Duplicates;
@@ -89,6 +92,7 @@ import com.mongodb.WriteResult;
 * @author Amol Nayak
 * @author Patryk Wasik
 * @author Thomas Darimont
+ * @author Komi Innocent
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:infrastructure.xml")
@@ -112,12 +116,13 @@ public class MongoTemplateTests {
 		mappingContext.setInitialEntitySet(new HashSet<Class<?>>(Arrays.asList(PersonWith_idPropertyOfTypeObjectId.class,
 				PersonWith_idPropertyOfTypeString.class, PersonWithIdPropertyOfTypeObjectId.class,
 				PersonWithIdPropertyOfTypeString.class, PersonWithIdPropertyOfTypeInteger.class,
-				PersonWithIdPropertyOfPrimitiveInt.class, PersonWithIdPropertyOfTypeLong.class,
-				PersonWithIdPropertyOfPrimitiveLong.class)));
+				PersonWithIdPropertyOfTypeBigInteger.class, PersonWithIdPropertyOfPrimitiveInt.class,
+				PersonWithIdPropertyOfTypeLong.class, PersonWithIdPropertyOfPrimitiveLong.class)));
 		mappingContext.setSimpleTypeHolder(conversions.getSimpleTypeHolder());
 		mappingContext.initialize();

-		MappingMongoConverter mappingConverter = new MappingMongoConverter(factory, mappingContext);
+		DbRefResolver dbRefResolver = new DefaultDbRefResolver(factory);
+		MappingMongoConverter mappingConverter = new MappingMongoConverter(dbRefResolver, mappingContext);
 		mappingConverter.setCustomConversions(conversions);
 		mappingConverter.afterPropertiesSet();

@@ -142,6 +147,7 @@ public class MongoTemplateTests {
 		template.dropCollection(PersonWithIdPropertyOfTypeObjectId.class);
 		template.dropCollection(PersonWithIdPropertyOfTypeString.class);
 		template.dropCollection(PersonWithIdPropertyOfTypeInteger.class);
+		template.dropCollection(PersonWithIdPropertyOfTypeBigInteger.class);
 		template.dropCollection(PersonWithIdPropertyOfPrimitiveInt.class);
 		template.dropCollection(PersonWithIdPropertyOfTypeLong.class);
 		template.dropCollection(PersonWithIdPropertyOfPrimitiveLong.class);
@@ -331,6 +337,43 @@ public class MongoTemplateTests {
 		assertThat(field, is(IndexField.create("age", Direction.DESC)));
 	}

+	/**
+	 * @see DATAMONGO-746
+	 */
+	@Test
+	public void testReadIndexInfoForIndicesCreatedViaMongoShellCommands() throws Exception {
+
+		String command = "db." + template.getCollectionName(Person.class)
+				+ ".ensureIndex({'age':-1}, {'unique':true, 'sparse':true})";
+		template.indexOps(Person.class).dropAllIndexes();
+
+		assertThat(template.indexOps(Person.class).getIndexInfo().isEmpty(), is(true));
+		factory.getDb().eval(command);
+
+		List<DBObject> indexInfo = template.getCollection(template.getCollectionName(Person.class)).getIndexInfo();
+		String indexKey = null;
+		boolean unique = false;
+
+		for (DBObject ix : indexInfo) {
+			if ("age_-1".equals(ix.get("name"))) {
+				indexKey = ix.get("key").toString();
+				unique = (Boolean) ix.get("unique");
+			}
+		}
+
+		assertThat(indexKey, is("{ \"age\" : -1.0}"));
+		assertThat(unique, is(true));
+
+		IndexInfo info = template.indexOps(Person.class).getIndexInfo().get(1);
+		assertThat(info.isUnique(), is(true));
+		assertThat(info.isSparse(), is(true));
+
+		List<IndexField> indexFields = info.getIndexFields();
+		IndexField field = indexFields.get(0);
+
+		assertThat(field, is(IndexField.create("age", Direction.DESC)));
+	}
+
 	@Test
 	public void testProperHandlingOfDifferentIdTypesWithMappingMongoConverter() throws Exception {
 		testProperHandlingOfDifferentIdTypes(this.mappingTemplate);
@@ -478,6 +521,25 @@ public class MongoTemplateTests {
 		assertThat(p9q.getId(), is(p9.getId()));
 		checkCollectionContents(PersonWithIdPropertyOfTypeInteger.class, 1);

+		/*
+		 * @see DATAMONGO-602
+		 */
+		// BigInteger id - provided
+		PersonWithIdPropertyOfTypeBigInteger p9bi = new PersonWithIdPropertyOfTypeBigInteger();
+		p9bi.setFirstName("Sven_9bi");
+		p9bi.setAge(22);
+		p9bi.setId(BigInteger.valueOf(12345));
+		// insert
+		mongoTemplate.insert(p9bi);
+		// also try save
+		mongoTemplate.save(p9bi);
+		assertThat(p9bi.getId(), notNullValue());
+		PersonWithIdPropertyOfTypeBigInteger p9qbi = mongoTemplate.findOne(new Query(where("id").in(p9bi.getId())),
+				PersonWithIdPropertyOfTypeBigInteger.class);
+		assertThat(p9qbi, notNullValue());
+		assertThat(p9qbi.getId(), is(p9bi.getId()));
+		checkCollectionContents(PersonWithIdPropertyOfTypeBigInteger.class, 1);
+
 		// int id - provided
 		PersonWithIdPropertyOfPrimitiveInt p10 = new PersonWithIdPropertyOfPrimitiveInt();
 		p10.setFirstName("Sven_10");
@@ -702,6 +764,47 @@ public class MongoTemplateTests {
 		assertThat(results3.size(), is(2));
 	}

+	/**
+	 * @see DATAMONGO-602
+	 */
+	@Test
+	public void testUsingAnInQueryWithBigIntegerId() throws Exception {
+
+		template.remove(new Query(), PersonWithIdPropertyOfTypeBigInteger.class);
+
+		PersonWithIdPropertyOfTypeBigInteger p1 = new PersonWithIdPropertyOfTypeBigInteger();
+		p1.setFirstName("Sven");
+		p1.setAge(11);
+		p1.setId(new BigInteger("2666666666666666665069473312490162649510603601"));
+		template.insert(p1);
+		PersonWithIdPropertyOfTypeBigInteger p2 = new PersonWithIdPropertyOfTypeBigInteger();
+		p2.setFirstName("Mary");
+		p2.setAge(21);
+		p2.setId(new BigInteger("2666666666666666665069473312490162649510603602"));
+		template.insert(p2);
+		PersonWithIdPropertyOfTypeBigInteger p3 = new PersonWithIdPropertyOfTypeBigInteger();
+		p3.setFirstName("Ann");
+		p3.setAge(31);
+		p3.setId(new BigInteger("2666666666666666665069473312490162649510603603"));
+		template.insert(p3);
+		PersonWithIdPropertyOfTypeBigInteger p4 = new PersonWithIdPropertyOfTypeBigInteger();
+		p4.setFirstName("John");
+		p4.setAge(41);
+		p4.setId(new BigInteger("2666666666666666665069473312490162649510603604"));
+		template.insert(p4);
+
+		Query q1 = new Query(Criteria.where("age").in(11, 21, 41));
+		List<PersonWithIdPropertyOfTypeBigInteger> results1 = template.find(q1, PersonWithIdPropertyOfTypeBigInteger.class);
+		Query q2 = new Query(Criteria.where("firstName").in("Ann", "Mary"));
+		List<PersonWithIdPropertyOfTypeBigInteger> results2 = template.find(q2, PersonWithIdPropertyOfTypeBigInteger.class);
+		Query q3 = new Query(Criteria.where("id").in(new BigInteger("2666666666666666665069473312490162649510603601"),
+				new BigInteger("2666666666666666665069473312490162649510603604")));
+		List<PersonWithIdPropertyOfTypeBigInteger> results3 = template.find(q3, PersonWithIdPropertyOfTypeBigInteger.class);
+		assertThat(results1.size(), is(3));
+		assertThat(results2.size(), is(2));
+		assertThat(results3.size(), is(2));
+	}
+
 	@Test
 	public void testUsingAnInQueryWithPrimitiveIntId() throws Exception {

@@ -1934,6 +2037,24 @@ public class MongoTemplateTests {
 		assertThat(result.get(2).getClass(), is((Object) VerySpecialDoc.class));
 	}

+	/**
+	 * @see DATAMONGO-771
+	 */
+	@Test
+	public void allowInsertWithPlainJsonString() {
+
+		String id = "4711";
+		String value = "bubu";
+		String json = String.format("{_id:%s, field: '%s'}", id, value);
+
+		template.insert(json, "sample");
+		List<Sample> result = template.findAll(Sample.class);
+
+		assertThat(result.size(), is(1));
+		assertThat(result.get(0).id, is(id));
+		assertThat(result.get(0).field, is(value));
+	}
+
 	static interface Model {
 		String value();

--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoTemplateUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoTemplateUnitTests.java
@@ -40,6 +40,7 @@ import org.springframework.dao.InvalidDataAccessApiUsageException;
 import org.springframework.data.annotation.Id;
 import org.springframework.data.mongodb.MongoDbFactory;
 import org.springframework.data.mongodb.core.convert.CustomConversions;
+import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver;
 import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
 import org.springframework.data.mongodb.core.convert.QueryMapper;
 import org.springframework.data.mongodb.core.index.MongoPersistentEntityIndexCreator;
@@ -64,27 +65,26 @@ public class MongoTemplateUnitTests extends MongoOperationsUnitTests {

 	MongoTemplate template;

-	@Mock
-	MongoDbFactory factory;
-	@Mock
-	Mongo mongo;
-	@Mock
-	DB db;
-	@Mock
-	DBCollection collection;
+	@Mock MongoDbFactory factory;
+	@Mock Mongo mongo;
+	@Mock DB db;
+	@Mock DBCollection collection;

+	MongoExceptionTranslator exceptionTranslator = new MongoExceptionTranslator();
 	MappingMongoConverter converter;
 	MongoMappingContext mappingContext;

 	@Before
 	public void setUp() {

+		when(factory.getDb()).thenReturn(db);
+		when(factory.getExceptionTranslator()).thenReturn(exceptionTranslator);
+		when(db.getCollection(Mockito.any(String.class))).thenReturn(collection);
+
 		this.mappingContext = new MongoMappingContext();
-		this.converter = new MappingMongoConverter(factory, mappingContext);
+		this.converter = new MappingMongoConverter(new DefaultDbRefResolver(factory), mappingContext);
 		this.template = new MongoTemplate(factory, converter);

-		when(factory.getDb()).thenReturn(db);
-		when(db.getCollection(Mockito.any(String.class))).thenReturn(collection);
 	}

 	@Test(expected = IllegalArgumentException.class)
@@ -228,14 +228,12 @@ public class MongoTemplateUnitTests extends MongoOperationsUnitTests {

 	class AutogenerateableId {

-		@Id
-		BigInteger id;
+		@Id BigInteger id;
 	}

 	class NotAutogenerateableId {

-		@Id
-		Integer id;
+		@Id Integer id;

 		public Pattern getId() {
 			return Pattern.compile(".");
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/PersonExample.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/PersonExample.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2010 the original author or authors.
+ * Copyright 2002-2013 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.
@@ -17,23 +17,27 @@ package org.springframework.data.mongodb.core;

 import java.util.List;

-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.context.ApplicationContext;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
-import org.springframework.data.mongodb.core.MongoOperations;
+import org.springframework.context.support.AbstractApplicationContext;

+/**
+ * @author Jon Brisbin
+ * @author Oliver Gierke
+ */
 public class PersonExample {

-	private static final Log log = LogFactory.getLog(PersonExample.class);
-	@Autowired
-	private MongoOperations mongoOps;
+	private static final Logger LOGGER = LoggerFactory.getLogger(PersonExample.class);
+
+	@Autowired private MongoOperations mongoOps;

 	public static void main(String[] args) {
-		ApplicationContext applicationContext = new AnnotationConfigApplicationContext(PersonExampleAppConfig.class);
+		AbstractApplicationContext applicationContext = new AnnotationConfigApplicationContext(PersonExampleAppConfig.class);
 		PersonExample example = applicationContext.getBean(PersonExample.class);
 		example.doWork();
+		applicationContext.close();
 	}

 	public void doWork() {
@@ -51,23 +55,23 @@ public class PersonExample {

 		mongoOps.save(p2);

-		log.debug("Saved: " + p);
+		LOGGER.debug("Saved: " + p);

 		p = mongoOps.findById(p.getId(), PersonWithIdPropertyOfTypeString.class);

-		log.debug("Found: " + p);
+		LOGGER.debug("Found: " + p);

 		// mongoOps.updateFirst(new Query(where("firstName").is("Sven")), new Update().set("age", 24));

 		// mongoOps.updateFirst(new Query(where("firstName").is("Sven")), update("age", 24));

 		p = mongoOps.findById(p.getId(), PersonWithIdPropertyOfTypeString.class);
-		log.debug("Updated: " + p);
+		LOGGER.debug("Updated: " + p);

 		List<PersonWithIdPropertyOfTypeString> folks = mongoOps.findAll(PersonWithIdPropertyOfTypeString.class);
-		log.debug("Querying for all people...");
+		LOGGER.debug("Querying for all people...");
 		for (PersonWithIdPropertyOfTypeString element : folks) {
-			log.debug(element);
+			LOGGER.debug(element.toString());
 		}

 		// mongoOps.remove( query(whereId().is(p.getId())), p.getClass());
@@ -76,10 +80,7 @@ public class PersonExample {

 		List<PersonWithIdPropertyOfTypeString> people = mongoOps.findAll(PersonWithIdPropertyOfTypeString.class);

-		// PersonWithIdPropertyOfTypeString p2 = mongoOps.findOne(query(whereId().is(p.getId())),
-		// PersonWithIdPropertyOfTypeString.class);
-
-		log.debug("Number of people = : " + people.size());
+		LOGGER.debug("Number of people = : " + people.size());

 	}

--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/PersonExampleAppConfig.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/PersonExampleAppConfig.java
@@ -17,16 +17,16 @@ package org.springframework.data.mongodb.core;

 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.data.mongodb.core.MongoTemplate;

 import com.mongodb.Mongo;
+import com.mongodb.MongoClient;

@Configuration
 public class PersonExampleAppConfig {

 	@Bean
 	public Mongo mongo() throws Exception {
-		return new Mongo("localhost");
+		return new MongoClient("localhost");
 	}

 	@Bean
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/PersonWithIdPropertyOfTypeBigInteger.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/PersonWithIdPropertyOfTypeBigInteger.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2010-2011 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.core;
+
+import java.math.BigInteger;
+
+public class PersonWithIdPropertyOfTypeBigInteger {
+
+	private BigInteger id;
+
+	private String firstName;
+
+	private int age;
+
+	public BigInteger getId() {
+		return id;
+	}
+
+	public void setId(BigInteger id) {
+		this.id = id;
+	}
+
+	public String getFirstName() {
+		return firstName;
+	}
+
+	public void setFirstName(String firstName) {
+		this.firstName = firstName;
+	}
+
+	public int getAge() {
+		return age;
+	}
+
+	public void setAge(int age) {
+		this.age = age;
+	}
+
+	@Override
+	public String toString() {
+		return "PersonWithIdPropertyOfTypeInteger [id=" + id + ", firstName=" + firstName + ", age=" + age + "]";
+	}
+
+}
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/SimpleMongoDbFactoryUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/SimpleMongoDbFactoryUnitTests.java
@@ -39,8 +39,7 @@ import com.mongodb.MongoURI;
@RunWith(MockitoJUnitRunner.class)
 public class SimpleMongoDbFactoryUnitTests {

-	@Mock
-	Mongo mongo;
+	@Mock Mongo mongo;

 	/**
 	 * @see DATADOC-254
@@ -66,6 +65,7 @@ public class SimpleMongoDbFactoryUnitTests {
 	 * @throws UnknownHostException
 	 */
 	@Test
+	@SuppressWarnings("deprecation")
 	public void mongoUriConstructor() throws UnknownHostException {

 		MongoURI mongoURI = new MongoURI("mongodb://myUsername:myPassword@localhost/myDatabase.myCollection");
@@ -77,6 +77,16 @@ public class SimpleMongoDbFactoryUnitTests {
 		assertThat(ReflectionTestUtils.getField(mongoDbFactory, "databaseName").toString(), is("myDatabase"));
 	}

+	/**
+	 * @see DATAMONGO-789
+	 */
+	@Test
+	public void defaultsAuthenticationDatabaseToDatabase() {
+
+		SimpleMongoDbFactory factory = new SimpleMongoDbFactory(mongo, "foo");
+		assertThat(ReflectionTestUtils.getField(factory, "authenticationDatabaseName"), is((Object) "foo"));
+	}
+
 	private void rejectsDatabaseName(String databaseName) {

 		try {
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/TestMongoConfiguration.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/TestMongoConfiguration.java
@@ -10,6 +10,7 @@ import org.springframework.data.mongodb.core.convert.CustomConversions;
 import org.springframework.data.mongodb.core.mapping.MongoMappingContext;

 import com.mongodb.Mongo;
+import com.mongodb.MongoClient;

 public class TestMongoConfiguration extends AbstractMongoConfiguration {

@@ -21,7 +22,7 @@ public class TestMongoConfiguration extends AbstractMongoConfiguration {
 	@Override
 	@Bean
 	public Mongo mongo() throws Exception {
-		return new Mongo("127.0.0.1", 27017);
+		return new MongoClient("127.0.0.1", 27017);
 	}

 	@Override
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/UnwrapAndReadDbObjectCallbackUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/UnwrapAndReadDbObjectCallbackUnitTests.java
@@ -25,6 +25,7 @@ import org.mockito.Mock;
 import org.mockito.runners.MockitoJUnitRunner;
 import org.springframework.data.mongodb.MongoDbFactory;
 import org.springframework.data.mongodb.core.MongoTemplate.UnwrapAndReadDbObjectCallback;
+import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver;
 import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
 import org.springframework.data.mongodb.core.mapping.MongoMappingContext;

@@ -46,7 +47,8 @@ public class UnwrapAndReadDbObjectCallbackUnitTests {
 	public void setUp() {

 		MongoTemplate template = new MongoTemplate(factory);
-		MappingMongoConverter converter = new MappingMongoConverter(factory, new MongoMappingContext());
+		MappingMongoConverter converter = new MappingMongoConverter(new DefaultDbRefResolver(factory),
+				new MongoMappingContext());

 		this.callback = template.new UnwrapAndReadDbObjectCallback<Target>(converter, Target.class);
 	}
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/AggregationTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/AggregationTests.java
@@ -15,13 +15,16 @@
 */
 package org.springframework.data.mongodb.core.aggregation;

-import static org.hamcrest.CoreMatchers.*;
+import static org.hamcrest.Matchers.*;
 import static org.junit.Assert.*;
+import static org.junit.Assume.*;
 import static org.springframework.data.domain.Sort.Direction.*;
 import static org.springframework.data.mongodb.core.aggregation.Aggregation.*;
 import static org.springframework.data.mongodb.core.query.Criteria.*;

 import java.io.BufferedInputStream;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
@@ -29,16 +32,20 @@ import java.util.Scanner;

 import org.junit.After;
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.ExpectedException;
 import org.junit.runner.RunWith;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.dao.DataAccessException;
+import org.springframework.data.mapping.model.MappingException;
 import org.springframework.data.mongodb.core.CollectionCallback;
 import org.springframework.data.mongodb.core.MongoTemplate;
 import org.springframework.data.mongodb.core.query.Query;
+import org.springframework.data.util.Version;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@@ -63,18 +70,31 @@ public class AggregationTests {

 	private static final String INPUT_COLLECTION = "aggregation_test_collection";
 	private static final Logger LOGGER = LoggerFactory.getLogger(AggregationTests.class);
+	private static final Version TWO_DOT_FOUR = new Version(2, 4);

 	private static boolean initialized = false;

 	@Autowired MongoTemplate mongoTemplate;

+	@Rule public ExpectedException exception = ExpectedException.none();
+	private static Version mongoVersion;
+
 	@Before
 	public void setUp() {

+		queryMongoVersionIfNecessary();
 		cleanDb();
 		initSampleDataIfNecessary();
 	}

+	private void queryMongoVersionIfNecessary() {
+
+		if (mongoVersion == null) {
+			CommandResult result = mongoTemplate.executeCommand("{ buildInfo: 1 }");
+			mongoVersion = Version.parse(result.get("version").toString());
+		}
+	}
+
 	@After
 	public void cleanUp() {
 		cleanDb();
@@ -84,6 +104,9 @@ public class AggregationTests {
 		mongoTemplate.dropCollection(INPUT_COLLECTION);
 		mongoTemplate.dropCollection(Product.class);
 		mongoTemplate.dropCollection(UserWithLikes.class);
+		mongoTemplate.dropCollection(DATAMONGO753.class);
+		mongoTemplate.dropCollection(Data.class);
+		mongoTemplate.dropCollection(DATAMONGO788.class);
 	}

 	/**
@@ -96,9 +119,7 @@ public class AggregationTests {

 		if (!initialized) {

-			CommandResult result = mongoTemplate.executeCommand("{ buildInfo: 1 }");
-			Object version = result.get("version");
-			LOGGER.debug("Server uses MongoDB Version: {}", version);
+			LOGGER.debug("Server uses MongoDB Version: {}", mongoVersion);

 			mongoTemplate.dropCollection(ZipInfo.class);
 			mongoTemplate.execute(ZipInfo.class, new CollectionCallback<Void>() {
@@ -424,13 +445,8 @@ public class AggregationTests {
 	@Test
 	public void arithmenticOperatorsInProjectionExample() {

-		double taxRate = 0.19;
-		double netPrice = 1.99;
-		double discountRate = 0.05;
-		int spaceUnits = 3;
-		String productId = "P1";
-		String productName = "A";
-		mongoTemplate.insert(new Product(productId, productName, netPrice, spaceUnits, discountRate, taxRate));
+		Product product = new Product("P1", "A", 1.99, 3, 0.05, 0.19);
+		mongoTemplate.insert(product);

 		TypedAggregation<Product> agg = newAggregation(Product.class, //
 				project("name", "netPrice") //
@@ -439,20 +455,293 @@ public class AggregationTests {
 						.and("netPrice").multiply(2).as("netPriceMul2") //
 						.and("netPrice").divide(1.19).as("netPriceDiv119") //
 						.and("spaceUnits").mod(2).as("spaceUnitsMod2") //
+						.and("spaceUnits").plus("spaceUnits").as("spaceUnitsPlusSpaceUnits") //
+						.and("spaceUnits").minus("spaceUnits").as("spaceUnitsMinusSpaceUnits") //
+						.and("spaceUnits").multiply("spaceUnits").as("spaceUnitsMultiplySpaceUnits") //
+						.and("spaceUnits").divide("spaceUnits").as("spaceUnitsDivideSpaceUnits") //
+						.and("spaceUnits").mod("spaceUnits").as("spaceUnitsModSpaceUnits") //
 		);

 		AggregationResults<DBObject> result = mongoTemplate.aggregate(agg, DBObject.class);
 		List<DBObject> resultList = result.getMappedResults();

 		assertThat(resultList, is(notNullValue()));
-		assertThat((String) resultList.get(0).get("_id"), is(productId));
-		assertThat((String) resultList.get(0).get("name"), is(productName));
-		assertThat((Double) resultList.get(0).get("netPricePlus1"), is(netPrice + 1));
-		assertThat((Double) resultList.get(0).get("netPriceMinus1"), is(netPrice - 1));
-		assertThat((Double) resultList.get(0).get("netPriceMul2"), is(netPrice * 2));
-		assertThat((Double) resultList.get(0).get("netPriceDiv119"), is(netPrice / 1.19));
-		assertThat((Integer) resultList.get(0).get("spaceUnitsMod2"), is(spaceUnits % 2));
+		assertThat((String) resultList.get(0).get("_id"), is(product.id));
+		assertThat((String) resultList.get(0).get("name"), is(product.name));
+		assertThat((Double) resultList.get(0).get("netPricePlus1"), is(product.netPrice + 1));
+		assertThat((Double) resultList.get(0).get("netPriceMinus1"), is(product.netPrice - 1));
+		assertThat((Double) resultList.get(0).get("netPriceMul2"), is(product.netPrice * 2));
+		assertThat((Double) resultList.get(0).get("netPriceDiv119"), is(product.netPrice / 1.19));
+		assertThat((Integer) resultList.get(0).get("spaceUnitsMod2"), is(product.spaceUnits % 2));
+		assertThat((Integer) resultList.get(0).get("spaceUnitsPlusSpaceUnits"), is(product.spaceUnits + product.spaceUnits));
+		assertThat((Integer) resultList.get(0).get("spaceUnitsMinusSpaceUnits"),
+				is(product.spaceUnits - product.spaceUnits));
+		assertThat((Integer) resultList.get(0).get("spaceUnitsMultiplySpaceUnits"), is(product.spaceUnits
+				* product.spaceUnits));
+		assertThat((Double) resultList.get(0).get("spaceUnitsDivideSpaceUnits"),
+				is((double) (product.spaceUnits / product.spaceUnits)));
+		assertThat((Integer) resultList.get(0).get("spaceUnitsModSpaceUnits"), is(product.spaceUnits % product.spaceUnits));
+	}

+	/**
+	 * @see DATAMONGO-774
+	 */
+	@Test
+	public void expressionsInProjectionExample() {
+
+		Product product = new Product("P1", "A", 1.99, 3, 0.05, 0.19);
+		mongoTemplate.insert(product);
+
+		TypedAggregation<Product> agg = newAggregation(Product.class, //
+				project("name", "netPrice") //
+						.andExpression("netPrice + 1").as("netPricePlus1") //
+						.andExpression("netPrice - 1").as("netPriceMinus1") //
+						.andExpression("netPrice / 2").as("netPriceDiv2") //
+						.andExpression("netPrice * 1.19").as("grossPrice") //
+						.andExpression("spaceUnits % 2").as("spaceUnitsMod2") //
+						.andExpression("(netPrice * 0.8  + 1.2) * 1.19").as("grossPriceIncludingDiscountAndCharge") //
+
+		);
+
+		AggregationResults<DBObject> result = mongoTemplate.aggregate(agg, DBObject.class);
+		List<DBObject> resultList = result.getMappedResults();
+
+		assertThat(resultList, is(notNullValue()));
+		assertThat((String) resultList.get(0).get("_id"), is(product.id));
+		assertThat((String) resultList.get(0).get("name"), is(product.name));
+		assertThat((Double) resultList.get(0).get("netPricePlus1"), is(product.netPrice + 1));
+		assertThat((Double) resultList.get(0).get("netPriceMinus1"), is(product.netPrice - 1));
+		assertThat((Double) resultList.get(0).get("netPriceDiv2"), is(product.netPrice / 2));
+		assertThat((Double) resultList.get(0).get("grossPrice"), is(product.netPrice * 1.19));
+		assertThat((Integer) resultList.get(0).get("spaceUnitsMod2"), is(product.spaceUnits % 2));
+		assertThat((Double) resultList.get(0).get("grossPriceIncludingDiscountAndCharge"),
+				is((product.netPrice * 0.8 + 1.2) * 1.19));
+	}
+
+	/**
+	 * @see DATAMONGO-774
+	 */
+	@Test
+	public void stringExpressionsInProjectionExample() {
+
+		assumeTrue(mongoVersion.isGreaterThanOrEqualTo(TWO_DOT_FOUR));
+
+		Product product = new Product("P1", "A", 1.99, 3, 0.05, 0.19);
+		mongoTemplate.insert(product);
+
+		TypedAggregation<Product> agg = newAggregation(Product.class, //
+				project("name", "netPrice") //
+						.andExpression("concat(name, '_bubu')").as("name_bubu") //
+		);
+
+		AggregationResults<DBObject> result = mongoTemplate.aggregate(agg, DBObject.class);
+		List<DBObject> resultList = result.getMappedResults();
+
+		assertThat(resultList, is(notNullValue()));
+		assertThat((String) resultList.get(0).get("_id"), is(product.id));
+		assertThat((String) resultList.get(0).get("name"), is(product.name));
+		assertThat((String) resultList.get(0).get("name_bubu"), is(product.name + "_bubu"));
+	}
+
+	/**
+	 * @see DATAMONGO-774
+	 */
+	@Test
+	public void expressionsInProjectionExampleShowcase() {
+
+		Product product = new Product("P1", "A", 1.99, 3, 0.05, 0.19);
+		mongoTemplate.insert(product);
+
+		double shippingCosts = 1.2;
+
+		TypedAggregation<Product> agg = newAggregation(Product.class, //
+				project("name", "netPrice") //
+						.andExpression("(netPrice * (1-discountRate)  + [0]) * (1+taxRate)", shippingCosts).as("salesPrice") //
+		);
+
+		AggregationResults<DBObject> result = mongoTemplate.aggregate(agg, DBObject.class);
+		List<DBObject> resultList = result.getMappedResults();
+
+		assertThat(resultList, is(notNullValue()));
+		DBObject firstItem = resultList.get(0);
+		assertThat((String) firstItem.get("_id"), is(product.id));
+		assertThat((String) firstItem.get("name"), is(product.name));
+		assertThat((Double) firstItem.get("salesPrice"), is((product.netPrice * (1 - product.discountRate) + shippingCosts)
+				* (1 + product.taxRate)));
+	}
+
+	@Test
+	public void shouldThrowExceptionIfUnknownFieldIsReferencedInArithmenticExpressionsInProjection() {
+
+		exception.expect(MappingException.class);
+		exception.expectMessage("unknown");
+
+		Product product = new Product("P1", "A", 1.99, 3, 0.05, 0.19);
+		mongoTemplate.insert(product);
+
+		TypedAggregation<Product> agg = newAggregation(Product.class, //
+				project("name", "netPrice") //
+						.andExpression("unknown + 1").as("netPricePlus1") //
+		);
+
+		mongoTemplate.aggregate(agg, DBObject.class);
+	}
+
+	/**
+	 * @see DATAMONGO-753
+	 * @see http 
+	 *      ://stackoverflow.com/questions/18653574/spring-data-mongodb-aggregation-framework-invalid-reference-in-group
+	 *      -operati
+	 */
+	@Test
+	public void allowsNestedFieldReferencesAsGroupIdsInGroupExpressions() {
+
+		mongoTemplate.insert(new DATAMONGO753().withPDs(new PD("A", 1), new PD("B", 1), new PD("C", 1)));
+		mongoTemplate.insert(new DATAMONGO753().withPDs(new PD("B", 1), new PD("B", 1), new PD("C", 1)));
+
+		TypedAggregation<DATAMONGO753> agg = newAggregation(DATAMONGO753.class, //
+				unwind("pd"), //
+				group("pd.pDch") // the nested field expression
+						.sum("pd.up").as("uplift"), //
+				project("_id", "uplift"));
+
+		AggregationResults<DBObject> result = mongoTemplate.aggregate(agg, DBObject.class);
+		List<DBObject> stats = result.getMappedResults();
+
+		assertThat(stats.size(), is(3));
+		assertThat(stats.get(0).get("_id").toString(), is("C"));
+		assertThat((Integer) stats.get(0).get("uplift"), is(2));
+		assertThat(stats.get(1).get("_id").toString(), is("B"));
+		assertThat((Integer) stats.get(1).get("uplift"), is(3));
+		assertThat(stats.get(2).get("_id").toString(), is("A"));
+		assertThat((Integer) stats.get(2).get("uplift"), is(1));
+	}
+
+	/**
+	 * @see DATAMONGO-753
+	 * @see http 
+	 *      ://stackoverflow.com/questions/18653574/spring-data-mongodb-aggregation-framework-invalid-reference-in-group
+	 *      -operati
+	 */
+	@Test
+	public void aliasesNestedFieldInProjectionImmediately() {
+
+		mongoTemplate.insert(new DATAMONGO753().withPDs(new PD("A", 1), new PD("B", 1), new PD("C", 1)));
+		mongoTemplate.insert(new DATAMONGO753().withPDs(new PD("B", 1), new PD("B", 1), new PD("C", 1)));
+
+		TypedAggregation<DATAMONGO753> agg = newAggregation(DATAMONGO753.class, //
+				unwind("pd"), //
+				project().and("pd.up").as("up"));
+
+		AggregationResults<DBObject> results = mongoTemplate.aggregate(agg, DBObject.class);
+		List<DBObject> mappedResults = results.getMappedResults();
+
+		assertThat(mappedResults, hasSize(6));
+		for (DBObject element : mappedResults) {
+			assertThat(element.get("up"), is((Object) 1));
+		}
+	}
+
+	/**
+	 * @DATAMONGO-774
+	 */
+	@Test
+	public void shouldPerformDateProjectionOperatorsCorrectly() throws ParseException {
+
+		assumeTrue(mongoVersion.isGreaterThanOrEqualTo(TWO_DOT_FOUR));
+
+		Data data = new Data();
+		data.stringValue = "ABC";
+		mongoTemplate.insert(data);
+
+		TypedAggregation<Data> agg = newAggregation(Data.class, project() //
+				.andExpression("concat(stringValue, 'DE')").as("concat") //
+				.andExpression("strcasecmp(stringValue,'XYZ')").as("strcasecmp") //
+				.andExpression("substr(stringValue,1,1)").as("substr") //
+				.andExpression("toLower(stringValue)").as("toLower") //
+				.andExpression("toUpper(toLower(stringValue))").as("toUpper") //
+		);
+
+		AggregationResults<DBObject> results = mongoTemplate.aggregate(agg, DBObject.class);
+		DBObject dbo = results.getUniqueMappedResult();
+
+		assertThat(dbo, is(notNullValue()));
+		assertThat((String) dbo.get("concat"), is("ABCDE"));
+		assertThat((Integer) dbo.get("strcasecmp"), is(-1));
+		assertThat((String) dbo.get("substr"), is("B"));
+		assertThat((String) dbo.get("toLower"), is("abc"));
+		assertThat((String) dbo.get("toUpper"), is("ABC"));
+	}
+
+	/**
+	 * @DATAMONGO-774
+	 */
+	@Test
+	public void shouldPerformStringProjectionOperatorsCorrectly() throws ParseException {
+
+		assumeTrue(mongoVersion.isGreaterThanOrEqualTo(TWO_DOT_FOUR));
+
+		Data data = new Data();
+		data.dateValue = new SimpleDateFormat("dd.MM.yyyy HH:mm:ss.SSSZ").parse("29.08.1983 12:34:56.789+0000");
+		mongoTemplate.insert(data);
+
+		TypedAggregation<Data> agg = newAggregation(Data.class, project() //
+				.andExpression("dayOfYear(dateValue)").as("dayOfYear") //
+				.andExpression("dayOfMonth(dateValue)").as("dayOfMonth") //
+				.andExpression("dayOfWeek(dateValue)").as("dayOfWeek") //
+				.andExpression("year(dateValue)").as("year") //
+				.andExpression("month(dateValue)").as("month") //
+				.andExpression("week(dateValue)").as("week") //
+				.andExpression("hour(dateValue)").as("hour") //
+				.andExpression("minute(dateValue)").as("minute") //
+				.andExpression("second(dateValue)").as("second") //
+				.andExpression("millisecond(dateValue)").as("millisecond") //
+		);
+
+		AggregationResults<DBObject> results = mongoTemplate.aggregate(agg, DBObject.class);
+		DBObject dbo = results.getUniqueMappedResult();
+
+		assertThat(dbo, is(notNullValue()));
+		assertThat((Integer) dbo.get("dayOfYear"), is(241));
+		assertThat((Integer) dbo.get("dayOfMonth"), is(29));
+		assertThat((Integer) dbo.get("dayOfWeek"), is(2));
+		assertThat((Integer) dbo.get("year"), is(1983));
+		assertThat((Integer) dbo.get("month"), is(8));
+		assertThat((Integer) dbo.get("week"), is(35));
+		assertThat((Integer) dbo.get("hour"), is(12));
+		assertThat((Integer) dbo.get("minute"), is(34));
+		assertThat((Integer) dbo.get("second"), is(56));
+		assertThat((Integer) dbo.get("millisecond"), is(789));
+	}
+
+	/**
+	 * @see DATAMONGO-788
+	 */
+	@Test
+	public void referencesToGroupIdsShouldBeRenderedProperly() {
+
+		mongoTemplate.insert(new DATAMONGO788(1, 1));
+		mongoTemplate.insert(new DATAMONGO788(1, 1));
+		mongoTemplate.insert(new DATAMONGO788(1, 1));
+		mongoTemplate.insert(new DATAMONGO788(2, 1));
+		mongoTemplate.insert(new DATAMONGO788(2, 1));
+
+		AggregationOperation projectFirst = Aggregation.project("x", "y").and("xField").as("x").and("yField").as("y");
+		AggregationOperation group = Aggregation.group("x", "y").count().as("xPerY");
+		AggregationOperation project = Aggregation.project("xPerY", "x", "y").andExclude("_id");
+
+		TypedAggregation<DATAMONGO788> aggregation = Aggregation.newAggregation(DATAMONGO788.class, projectFirst, group,
+				project);
+		AggregationResults<DBObject> aggResults = mongoTemplate.aggregate(aggregation, DBObject.class);
+		List<DBObject> items = aggResults.getMappedResults();
+
+		assertThat(items.size(), is(2));
+		assertThat((Integer) items.get(0).get("xPerY"), is(2));
+		assertThat((Integer) items.get(0).get("x"), is(2));
+		assertThat((Integer) items.get(0).get("y"), is(1));
+		assertThat((Integer) items.get(1).get("xPerY"), is(3));
+		assertThat((Integer) items.get(1).get("x"), is(1));
+		assertThat((Integer) items.get(1).get("y"), is(1));
 	}

 	private void assertLikeStats(LikeStats like, String id, long count) {
@@ -502,4 +791,40 @@ public class AggregationTests {
 		assertThat(tagCount.getN(), is(n));
 	}

+	static class DATAMONGO753 {
+		PD[] pd;
+
+		DATAMONGO753 withPDs(PD... pds) {
+			this.pd = pds;
+			return this;
+		}
+	}
+
+	static class PD {
+		String pDch;
+		@org.springframework.data.mongodb.core.mapping.Field("alias") int up;
+
+		public PD(String pDch, int up) {
+			this.pDch = pDch;
+			this.up = up;
+		}
+	}
+
+	static class DATAMONGO788 {
+
+		int x;
+		int y;
+		int xField;
+		int yField;
+
+		public DATAMONGO788() {}
+
+		public DATAMONGO788(int x, int y) {
+			this.x = x;
+			this.xField = x;
+			this.y = y;
+			this.yField = y;
+		}
+	}
+
 }
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/AggregationUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/AggregationUnitTests.java
@@ -15,32 +15,150 @@
 */
 package org.springframework.data.mongodb.core.aggregation;

+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+import static org.springframework.data.mongodb.core.DBObjectTestUtils.*;
+import static org.springframework.data.mongodb.core.aggregation.Aggregation.*;
+import static org.springframework.data.mongodb.core.query.Criteria.*;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.Rule;
 import org.junit.Test;
-import org.springframework.data.mongodb.core.aggregation.Aggregation;
-import org.springframework.data.mongodb.core.aggregation.AggregationOperation;
+import org.junit.rules.ExpectedException;
+
+import com.mongodb.DBObject;

 /**
+ * Unit tests for {@link Aggregation}.
+ * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public class AggregationUnitTests {

+	public @Rule ExpectedException exception = ExpectedException.none();
+
 	@Test(expected = IllegalArgumentException.class)
 	public void rejectsNullAggregationOperation() {
-		Aggregation.newAggregation((AggregationOperation[]) null);
+		newAggregation((AggregationOperation[]) null);
 	}

 	@Test(expected = IllegalArgumentException.class)
 	public void rejectsNullTypedAggregationOperation() {
-		Aggregation.newAggregation(String.class, (AggregationOperation[]) null);
+		newAggregation(String.class, (AggregationOperation[]) null);
 	}

 	@Test(expected = IllegalArgumentException.class)
 	public void rejectsNoAggregationOperation() {
-		Aggregation.newAggregation(new AggregationOperation[0]);
+		newAggregation(new AggregationOperation[0]);
 	}

 	@Test(expected = IllegalArgumentException.class)
 	public void rejectsNoTypedAggregationOperation() {
-		Aggregation.newAggregation(String.class, new AggregationOperation[0]);
+		newAggregation(String.class, new AggregationOperation[0]);
+	}
+
+	/**
+	 * @see DATAMONGO-753
+	 */
+	@Test
+	public void checkForCorrectFieldScopeTransfer() {
+
+		exception.expect(IllegalArgumentException.class);
+		exception.expectMessage("Invalid reference");
+		exception.expectMessage("'b'");
+
+		newAggregation( //
+				project("a", "b"), //
+				group("a").count().as("cnt"), // a was introduced to the context by the project operation
+				project("cnt", "b") // b was removed from the context by the group operation
+		).toDbObject("foo", Aggregation.DEFAULT_CONTEXT); // -> triggers IllegalArgumentException
+	}
+
+	/**
+	 * @see DATAMONGO-753
+	 */
+	@Test
+	public void unwindOperationShouldNotChangeAvailableFields() {
+
+		newAggregation( //
+				project("a", "b"), //
+				unwind("a"), //
+				project("a", "b") // b should still be available
+		).toDbObject("foo", Aggregation.DEFAULT_CONTEXT);
+	}
+
+	/**
+	 * @see DATAMONGO-753
+	 */
+	@Test
+	public void matchOperationShouldNotChangeAvailableFields() {
+
+		newAggregation( //
+				project("a", "b"), //
+				match(where("a").gte(1)), //
+				project("a", "b") // b should still be available
+		).toDbObject("foo", Aggregation.DEFAULT_CONTEXT);
+	}
+
+	/**
+	 * @see DATAMONGO-788
+	 */
+	@Test
+	public void referencesToGroupIdsShouldBeRenderedAsReferences() {
+
+		DBObject agg = newAggregation( //
+				project("a"), //
+				group("a").count().as("aCnt"), //
+				project("aCnt", "a") //
+		).toDbObject("foo", Aggregation.DEFAULT_CONTEXT);
+
+		@SuppressWarnings("unchecked")
+		DBObject secondProjection = ((List<DBObject>) agg.get("pipeline")).get(2);
+		DBObject fields = getAsDBObject(secondProjection, "$project");
+		assertThat(fields.get("aCnt"), is((Object) 1));
+		assertThat(fields.get("a"), is((Object) "$_id.a"));
+	}
+
+	/**
+	 * @see DATAMONGO-791
+	 */
+	@Test
+	public void allowAggregationOperationsToBePassedAsIterable() {
+
+		List<AggregationOperation> ops = new ArrayList<AggregationOperation>();
+		ops.add(project("a"));
+		ops.add(group("a").count().as("aCnt"));
+		ops.add(project("aCnt", "a"));
+
+		DBObject agg = newAggregation(ops).toDbObject("foo", Aggregation.DEFAULT_CONTEXT);
+
+		@SuppressWarnings("unchecked")
+		DBObject secondProjection = ((List<DBObject>) agg.get("pipeline")).get(2);
+		DBObject fields = getAsDBObject(secondProjection, "$project");
+		assertThat(fields.get("aCnt"), is((Object) 1));
+		assertThat(fields.get("a"), is((Object) "$_id.a"));
+	}
+
+	/**
+	 * @see DATAMONGO-791
+	 */
+	@Test
+	public void allowTypedAggregationOperationsToBePassedAsIterable() {
+
+		List<AggregationOperation> ops = new ArrayList<AggregationOperation>();
+		ops.add(project("a"));
+		ops.add(group("a").count().as("aCnt"));
+		ops.add(project("aCnt", "a"));
+
+		DBObject agg = newAggregation(DBObject.class, ops).toDbObject("foo", Aggregation.DEFAULT_CONTEXT);
+
+		@SuppressWarnings("unchecked")
+		DBObject secondProjection = ((List<DBObject>) agg.get("pipeline")).get(2);
+		DBObject fields = getAsDBObject(secondProjection, "$project");
+		assertThat(fields.get("aCnt"), is((Object) 1));
+		assertThat(fields.get("a"), is((Object) "$_id.a"));
 	}
 }
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/Data.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/Data.java
@@ -0,0 +1,31 @@
+/*
+ * 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.core.aggregation;
+
+import java.util.Date;
+
+/**
+ * @author Thomas Darimont
+ */
+class Data {
+	public long primitiveLongValue;
+	public double primitiveDoubleValue;
+	public Double doubleValue;
+	public Date dateValue;
+	public String stringValue;
+
+	public DataItem item;
+}
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/DataItem.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/DataItem.java
@@ -0,0 +1,23 @@
+/*
+ * 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.core.aggregation;
+
+/**
+ * @author Thomas Darimont
+ */
+class DataItem {
+	int primitiveIntValue;
+}
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/ExposedFieldsUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/ExposedFieldsUnitTests.java
@@ -25,6 +25,7 @@ import org.springframework.data.mongodb.core.aggregation.ExposedFields.ExposedFi
 * Unit tests for {@link ExposedFields}.
 * 
 * @author Oliver Gierke
+ * @author Thomas Darimont
 */
 public class ExposedFieldsUnitTests {

--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/FieldsUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/FieldsUnitTests.java
@@ -106,6 +106,34 @@ public class FieldsUnitTests {
 		fields("b", "a.b");
 	}

+	/**
+	 * @see DATAMONGO-774
+	 */
+	@Test
+	public void stripsLeadingDollarsFromName() {
+
+		assertThat(Fields.field("$name").getName(), is("name"));
+		assertThat(Fields.field("$$$$name").getName(), is("name"));
+	}
+
+	/**
+	 * @see DATAMONGO-774
+	 */
+	@Test(expected = IllegalArgumentException.class)
+	public void rejectsNameConsistingOfDollarOnly() {
+		Fields.field("$");
+	}
+
+	/**
+	 * @see DATAMONGO-774
+	 */
+	@Test
+	public void stripsLeadingDollarsFromTarget() {
+
+		assertThat(Fields.field("$target").getTarget(), is("target"));
+		assertThat(Fields.field("$$$$target").getTarget(), is("target"));
+	}
+
 	private static void verify(Field field, String name, String target) {

 		assertThat(field, is(notNullValue()));
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/GeoNearOperationUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/GeoNearOperationUnitTests.java
@@ -19,7 +19,7 @@ import static org.hamcrest.CoreMatchers.*;
 import static org.junit.Assert.*;

 import org.junit.Test;
-import org.springframework.data.mongodb.core.DBObjectUtils;
+import org.springframework.data.mongodb.core.DBObjectTestUtils;
 import org.springframework.data.mongodb.core.query.NearQuery;

 import com.mongodb.DBObject;
@@ -38,7 +38,7 @@ public class GeoNearOperationUnitTests {
 		GeoNearOperation operation = new GeoNearOperation(query);
 		DBObject dbObject = operation.toDBObject(Aggregation.DEFAULT_CONTEXT);

-		DBObject nearClause = DBObjectUtils.getAsDBObject(dbObject, "$geoNear");
+		DBObject nearClause = DBObjectTestUtils.getAsDBObject(dbObject, "$geoNear");
 		assertThat(nearClause, is(query.toDBObject()));
 	}
 }
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Spring Buildmaster	2b5e2361a8	DATAMONGO-799 - Release version 1.4.0.M1.	2013-11-19 04:19:10 -08:00
Thomas Darimont	5737f2d19d	DATAMONGO-801 - Prepare release 1.4.0 M1. Updated project metadata and bumped versions.	2013-11-19 13:12:06 +01:00
Oliver Gierke	60494a6904	DATAMONGO-800 - Improved AuditingIntegrationTests. Added a tiny Thread.sleep(…) to make sure the assertion works on fast machines. If the operations after the first step all happen within a millisecond, it will fail.	2013-11-18 13:50:42 +01:00
Oliver Gierke	ceb561e3e4	DATAMONGO-792 - Polishing of JavaConfig support for auditing. Original pull request: #94.	2013-11-12 11:57:25 +01:00
Thomas Darimont	e2d0220cea	DATAMONGO-792 - Add support to configure auditing via JavaConfig. Introduces the necessary infrastructure in form of MongoAuditingRegistrar to configure auditing with MongoDB via Annotation config. The MongoDB auditing feature can be enabled by annotating a configuration class with the EnableMongoAuditing annotation. Added section to reference documentation. Original pull request: #94.	2013-11-12 11:50:46 +01:00
Oliver Gierke	ea33e8b8c6	DATAMONGO-348 - Improved interceptor for lazy-loaded DBRefs. We're now routing calls to methods declared on Object into the proxy to not accidentally resolve the lazy loading proxy on access of methods like toString() etc.	2013-11-08 19:19:16 +01:00
Oliver Gierke	506b6a2e85	DATAMONGO-795 - More predictable behavior in CustomConversions. The target type lookup previously was unpredictable in cases two converters were registered for the same source type. We now use LinkedHashMaps to register the converters and also make sure that we prefer manually registered converters over the default ones. Related pull request: #96.	2013-11-07 15:11:50 +01:00
Thomas Darimont	7c0eee9e09	DATAMONGO-789 - Support login via different authentication database. MongoDbUtils now supports to perform the authentication against a dedicated authenticationDatabase - if no authenticationDatabase is given explicitly then the given regular database will be used. The authentication database can be configured via the authentication-dbname attribute of the db-factory element in xml config or by overriding the getAuthenticationDatabaseName() method of AbstractMongoConfiguration. Original pull request: #92.	2013-11-06 11:59:48 +01:00
Thomas Darimont	332e5eb715	DATAMONGO-791 - Added newAggregation(…) overloads to accept a List. Aggregations can now be constructed from a list of AggregateOperations. This simplifies the usage in cases where one has to conditionally in- or exclude AggregateOperations from an AggregationPipeline. Original pull request: #93.	2013-11-06 11:00:31 +01:00
Oliver Gierke	39ee9b56e2	DATAMONGO-793 - Adapt test cases to new initialization model of repositories. Moved tests for nested repositories to a separate package to prevent initialization of repositories that are not meant to be instantiated actually.	2013-11-05 17:29:05 +01:00
Thomas Darimont	8fb390ee88	DATAMONGO-348 - Added serialization support for lazy-loading for DBRefs.	2013-11-05 15:22:19 +01:00
Oliver Gierke	df1c4496dc	DATAMONGO-348 - Polishing of lazy loading implementation. Extracted DelegatingDbRefResolver and associates from MappingMongoConverter. Let MongoDbFactory expose PersistenceExceptionTranslator only to prevent invalid dependency to core package. Renamed DbRefResolveCallback to ResolverCallback. Removed AbstractDbRefResolver and moved the functionality implemented there (triggering of exception translation) into the DbRefResolver. MappingMongoConverter now uses a slightly extended version of DbRefResolver so that we can essentially replace the MongoDbFactory dependency with the DbRefResolver one. Added support for Objenesis based lazy-loading proxies to support domain classes without a default constructor. Explicitly check for Spring 4 being present as with it the default ProxyFactory already supports that out of the box. Added missing JavaDoc and assertions. A lot of cleanups and removal of deprecation warnings in test cases.	2013-11-04 20:21:10 +01:00
Thomas Darimont	b808fd3003	DATAMONGO-348 - Add support for lazy loading of DbRefs. Introduced DbRefResolver interface in order to be able to abstract how a DbRef is resolved that is used in MappingMongoConverter#doWithAssociations. The present behaviour was to resolve a DbRef eagerly. This functionality is now implemented by EagerDbRefResolver. In order to support lazy loading we have to provide some means to define the desired loading behaviour. This can now be done via the "lazy"-Attribute on @DbRef which defaults to false. If the attribute is set to true the LazyDbRefResolver is used to create a Proxy that eagerly loads the required data on demand when one of the (non-Object) proxy methods is called. MongoDbFactory now exposes a MongoExceptionTranslator that is now used by the MappingMongoConverter and MongoTemplate. Introduced a DelegatingDbRefResolver that can delegate to a DbRefResolveCallback in order to perform the actual DbRef resolution. We now use cglib-proxies if necessary if the referenced association is a concrete class. Added unit tests for lazy loading of interface types, concrete collection types and concrete domain types. Exposed state from LazyLoadingInterceptor for better testability. Added unit tests for lazy loading of classes with custom PersistenceConstructor. Moved integration tests for PersonRepository into its own test class.	2013-11-04 20:15:24 +01:00
Oliver Gierke	ed12298271	DATAMONGO-788 - Polishing. Slightly changed the way the the simple reference rendering for projections is implemented. Introduced an isAliased() method on Field to be able to determine whether the field reference has been renamed explicitly. Original pull request: #90.	2013-10-31 14:40:09 +00:00
Thomas Darimont	682798325b	DATAMONGO-788 - Projection operations do not render synthetic fields properly. Introduced boolean isSynthetic() attribute to FieldReference to determine if the given reference points to a synthetic field, as this controls whether we render a simple include (1) or a concrete reference ($fieldName) E.g. isSynthetic() would be true for a field reference to _id. Original pull request: #90.	2013-10-31 14:39:48 +00:00
Oliver Gierke	0e69021486	DATAMONGO-787 - Upgraded to Spring Framework 3.2.4. Upgraded to Spring Data Commons 1.3.0.BUILD-SNAPSHOT to benefit from upgrade to Spring 3.2.4 Added a workaround in the code introduced for DATAMONGO-774 which now runs into SPR-11031.	2013-10-25 20:57:21 +02:00
Komi Serge Innocent	ae7e24f1b6	DATAMONGO-746 - Creating an IndexInfo now also works with Doubles. DefaultIndexOperations is now able to detect that in contrast to what's currently documented in the MongoDB reference documentation, it apparently returns double values for the index direction. Original pull request: #67.	2013-10-25 10:48:57 +02:00
Thomas Darimont	94d4fa613c	DATAMONGO-780 - Add support for nested repositories. Support for considering nested repository interfaces can now be configured on the EnableMongoRepositories annotation via the considerNestedRepositories property. Original pull request: #87.	2013-10-24 14:56:02 +02:00
Max Leuthäuser	39c9593b39	DATAMONGO-782 - Fixed typo in documentation. Original pull request: #86.	2013-10-21 17:33:49 +02:00
Oliver Gierke	6e5f3661a8	DATAMONGO-774 - Some polishing in the reference documentation.	2013-10-17 15:54:05 +02:00
Thomas Darimont	2bd78e0bf0	DATAMONGO-774 - Added usage examples for SpEL expressions in projections to the reference documentation. Original pull request: #81.	2013-10-17 15:54:05 +02:00
Oliver Gierke	dd59cdc59a	DATAMONGO-774 - A round of Jürgenization for SpEL support in aggregation framework support. Introduced dedicated spel package and extracted value objects to encapsulate and express information about the node transformation in a more semantical way. Moved a lot of the logic contained in the SpelExpressionTransformer into the value objects for cohesiveness and testability. Updated Sonargraph architecture model to reflect the new packages we've introduced. Original pull request: #81.	2013-10-17 15:54:01 +02:00
Thomas Darimont	7e471e2301	DATAMONGO-774 - Support SpEL expressions to define projection operations in the aggregation framework. ProjectionOperations can now be built using SpEL expressions as this significantly shortens the code needed to express the project, especially for slightly more complex mathematical expressions. Projection now has an ….andExpression(…) method that takes a SpEL expression and optional arguments that can be referred to via their index, i.e. a SpEl expression "5 + [0]" can be expanded using ….andExpression("5 + [0]", 7).… so that the projection can be prepared and dynamically get values bound. Original pull request: #81.	2013-10-17 15:43:29 +02:00
Oliver Gierke	0871a43831	DATAMONGO-764 - Polished JavaDoc in MongoOptionsFactoryBean.	2013-10-15 14:04:09 +02:00
Mike Saavedra	710e77dabe	DATAMONGO-764 - Added SSL support to Mongo configuration options. Added support for allowing Mongo clients to use secure SSL connections by introducing the "ssl" property in MongoOptionsFactoryBean that will enable the use of the configured SSLSocketFactory to create SSLSockets. If no custom SSLSocketFactory is configured SSLSocketFactory#getDefault() will be used. We introduce this configuration in a new version of spring-mongo-1.4.xsd. Applied Mike Saavedra's pull request (#75) with the above mentioned extensions. Original pull request: #83.	2013-10-15 14:03:36 +02:00
Oliver Gierke	9c996617e8	DATAMONGO-630 - Polishing in UpdateTests.	2013-10-13 15:23:11 +02:00
Becca Gaspard	eebd49ab8d	DATAMONGO-630 - Support $setOnInsert update operator. Original pull request: #70.	2013-10-13 15:13:12 +02:00
Oliver Gierke	fb979b1734	DATAMONGO-752 - Improved keyword detection in QueryMapper. The check for keywords in QueryMapper now selectively decides between checks for a nested keyword (DBObject) object and the check for a simple key. This allows the usage of criteria values starting with $ (e.g. { 'myvalue' : '$334' }) without the value being considered a keyword and thus erroneously triggering a potential conversion of the value. Moved more logic for a keyword into the Keyword value object.	2013-10-13 13:48:00 +02:00
Oliver Gierke	b5c88938e0	DATAMONGO-534 - GridFsTemplate supports queries with sorting. Upgraded to Mongo Java Driver 2.11.3 to be able to forward the sorting options contained in a Query to eventually be able to return sorted results when querying for files.	2013-10-13 12:41:06 +02:00
Oliver Gierke	4027770701	DATAMONGO-777 - Upgraded to Mongo Java Driver 2.11.3. Upgraded to latest mongo Java Driver release to benefit from new API introduced (required to fix DATAMONGO-534). Adapted test cases to API changes in DuplicateKey.	2013-10-13 12:41:06 +02:00
Oliver Gierke	a120ce2bb1	DATAMONGO-776 - Improvement in TypeBasedAggregationOperationContext. TypeBasedAggregationOperationContext's getReference(…) doesn't use a PropertyPath anymore to avoid running the camel case property resolution.	2013-10-10 14:03:25 +02:00
Thomas Darimont	a5d40a049d	DATAMONGO-769 - Improve support for arithmetic operators in AggregationFramework. We now support the usage of field references in arithmetic projection operations. Original pull request: #80.	2013-10-10 11:09:04 +02:00
Thomas Darimont	f0f12d5296	DATAMONGO-771 - Fix raw JSON string handling in MongoTemplate.insert(…). We now support insertion of JSON objects as plain strings via MongoTemplate.insert(…). Original pull request: #79.	2013-10-08 12:46:03 +02:00
Oliver Gierke	24e06cf219	DATAMONGO-761 - Fix path key lookup for non-properties in SpringDataMongoDBSerializer. In our Querydsl MongodbSerializer implementation we now only inspect the MongoPersistentProperty for a field name if the given path is really a property path. Previously we tried to always resolve a persistent property even if the given path was an array index path, a map key or the like.	2013-10-08 12:37:18 +02:00
Oliver Gierke	1b83ff0382	DATAMONGO-766 - Support for nested field references through @Field. The MappingMongoConverter now supports reading and writing nested fields from and to documents by using @Field(…) with a path expression, e.g. @Field("a.b"). We now correctly create the nested objects and also reuse the previously created intermediates when populating further properties. Not that this might cause the need to define field ordering explicitly as later properties might override the values set using a path reference in @Field.	2013-10-08 12:23:24 +02:00
Thomas Darimont	fe41202f96	DATAMONGO-770 - Add support for IgnoreCase in query derivation. We now support IgnoreCase and AllIgnoreCase in predicate expression for derived queries. Original pull request: #78.	2013-10-07 17:13:33 +02:00
Thomas Darimont	78235b4799	DATAMONGO-768 - Improve documentation of how to use @PersistenceConstructor. Added an additional section to chapter 7.3 that describes the parameter value binding when the @PersistenceConstructor annotation including a small usage example. Added a concrete example for the @Value annotation that uses SpEL. Original pull request: #77.	2013-10-01 14:04:34 +02:00
Thomas Darimont	51ece4353b	DATAMONGO-759 - Improved rendering of GroupOperation. GroupOperation gets the _id field now rendered as null if no group fields were added to the operation. Previously it was rendered as empty document (i.e. { }). While this was technically correct as well, we're now closer to what the MongoDB reference documentation describes. Original pull request: #73.	2013-09-30 19:20:05 +02:00
Thomas Darimont	51bab838b0	DATAMONGO-757 - Align output of projection operation with MongoDB defaults. Adjusted FieldProjection to generate an appropriate representation of included / excluded fields (namely :1 for included and :0 for excluded). Polished guards to handle only _id is allowed to be excluded (DATAMONGO-758). Original pull request: #76.	2013-09-27 12:56:01 +02:00
Thomas Darimont	361f9daa45	DATAMONGO-753 - Add support for nested field references in aggregation operations. Aggregation pipelines now correctly handle nested field references in aggregation operations. We introduced FieldsExposingAggregationOperation to mark AggregationOperations that change the set of exposed fields available for processing by later AggregationOperations. Extracted context state out of AggregationOperation to ExposedFieldsAggregationContext for better separation of concerns. Modified toDbObject(…) in Aggregation to only replace the aggregation context when the current AggregationOperation is a FieldExposingAggregationOperation. Original pull request: #74.	2013-09-26 14:29:04 +02:00
Thomas Darimont	56b23a6dbe	DATAMONGO-758 - Current mongodb Versions only support to explicitly exclude the _id property in a projection. Added guard to FieldProjection.from within ProjectionOption to prevent users from excluding fields other than "_id".	2013-09-24 16:38:20 +02:00
Thomas Darimont	9e15c17e26	DATAMONGO-760 - Add ability to override CRUD methods using @Query. Annotated @Query with @QueryAnnotation to mark it as a custom query annotation so that one can redeclare a repository CRUD method and let it execute the annotated query instead of triggering the generic implementation. Original pull request: #71.	2013-09-24 16:09:28 +02:00
Thomas Darimont	a3c77a43b6	DATAMONGO-740 - Prepare for next iteration. Updated pom.xml to refer to the latest SD Commons Version 1.7.0.BUILD-SNAPSHOT.	2013-09-18 13:50:02 +02:00
Oliver Gierke	55169e2e11	DATAMONGO-740 - Updated readme after 1.4.0.RELEASE release.	2013-09-09 16:10:55 -07:00
Spring Buildmaster	24672e6bdd	DATAMONGO-740 - Prepare next development iteration.	2013-09-09 15:56:23 -07:00
Spring Buildmaster	1a46abfbb9	DATAMONGO-740 - Release version 1.3.0.RELEASE.	2013-09-09 15:56:20 -07:00
Thomas Darimont	61284228dd	DATAMONGO-740 - Prepare 1.3.0 RELEASE.	2013-09-09 15:50:04 -07:00
Thomas Darimont	8cb92de1ee	DATAMONGO-445 - Allow to skip unnecessary elements in NearQuery. Added support for skipping elements for NearQuery in MongoTemplate. As mongodb currently (2.4.4) doesn't support he skipping of elements in geoNear-Queries we skip the unnecessary elements ourselves. We use the limit & skip information from the given query or an explicitly passed Pageable. Original pull request: #64.	2013-08-22 09:20:19 +02:00
Oliver Gierke	5d3cc3fa04	DATAMONGO-743 - Added DBObjectToStringConverter. Added a reading converter to dump DBObject instances into a String directly to enable executing queries against MongoDB into a String version of the query result without marshaling the DBObject into a Map first.	2013-08-22 08:55:07 +02:00
Thomas Darimont	c0b99740dc	DATAMONGO-742 - Document CDI integration in reference documentation. Added chapter for CDI Integration under the new chapter Miscellaneous. Original pull request: #63.	2013-08-13 12:20:58 +02:00
Randy Watler	595bbd3aa7	DATAMONGO-737 - Register TransactionSynchronization holder once per Mongo instance. Original pull request: #62.	2013-08-12 09:51:02 +02:00
Chuong Ngo	5d2fc31164	DATAMONGO-738 - Allow to pass collectionName along with entityClass as parameter to update methods in MongoTemplate. Added appropriate overloaded methods to MongoOperations and MongoTemplate. Applied pull request from Chuong Ngo <chuong.h.ngo.ctr@mail.mil>. Original pull request: #57.	2013-08-09 15:30:00 +02:00
Thomas Darimont	a9dc0fae69	DATAMONGO-725 - Improve configurability and documentation of TypeMapper on MappingMongoConverter. Added new attribute type-mapper-ref to the mapping-converter element in spring-mongo-1.3.xsd in order to support the configuration of custom-type-mappers. Removed the unsupported attributes "mongo-ref" and "mongo-template-ref" from the mapping-converter element in spring-mongo-1.3.xsd because they are not considered anymore. Updated MappingMongoConverterParser to be aware of the new attribute. Added examples for configuring a custom MongoTypeMapper the usage of @TypeAlias to the reference documentation. Original pull request: #61.	2013-08-09 13:44:53 +02:00
Thomas Darimont	0605c7b753	DATAMONGO-507 - Reject incorrect usage of Criteria#not(). Added a guard to Criteria#(and\|or\|nor)Operator to prevent wrapping $and, $or or $nor expressions in a $not expression as mongodb currently doesn't support this. Added test case to CriteriaTests to verify that not() works as specified. Original pull request: #60.	2013-08-09 12:23:25 +02:00
Thomas Darimont	21352a8829	DATAMONGO-602 - Added test case to MongoTemplate tests to verify that querying by BigInteger ids work. Original pull request: #59.	2013-08-07 18:58:32 +02:00
Oliver Gierke	58e1d2dbd9	DATAMONGO-741 - Fixed check for nested property references in aggregation framework. Fixed using the actual field reference instead of the field name on resolving. Added equals(…) and hashCode() methods to value objects. Added unit tests for TypeBasedAggregationOperationContext.	2013-08-07 10:21:48 +02:00
Spring Buildmaster	4f7821e3c2	DATAMONGO-732 - Prepare next development iteration.	2013-08-05 08:48:22 -07:00