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Merge branch 'master' of https://github.com/eugenp/tutorials

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This commit is contained in:
Denis
2018-06-26 19:11:28 +02:00
parent 642eaa2a85 287d0a062a
commit d5013d55fb
1054 changed files with 17886 additions and 3074 deletions
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2
patterns/design-patterns/README.md
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@@ -8,4 +8,4 @@
- [Service Locator Pattern](http://www.baeldung.com/java-service-locator-pattern)
- [Double-Checked Locking with Singleton](http://www.baeldung.com/java-singleton-double-checked-locking)
- [Composite Design Pattern in Java](http://www.baeldung.com/java-composite-pattern)
- [Visitor Design Pattern in Java](http://www.baeldung.com/java-visitor-pattern)

18
patterns/design-patterns/pom.xml
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@@ -50,18 +50,18 @@
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.11</version>
<scope>test</scope>
</dependency>
<dependency>
<version>6.0.6</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>com.googlecode.grep4j</groupId>
<artifactId>grep4j</artifactId>
<version>${grep4j.version}</version>
</dependency>
<dependency>
<groupId>com.googlecode.grep4j</groupId>
<artifactId>grep4j</artifactId>
<version>${grep4j.version}</version>
</dependency>
</dependencies>
<properties>

13
patterns/design-patterns/src/main/java/com/baeldung/daopattern/application/UserApplication.java
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@@ -1,5 +1,6 @@
package com.baeldung.daopattern.application;
import com.baeldung.daopattern.config.JpaEntityManagerFactory;
import com.baeldung.daopattern.daos.Dao;
import com.baeldung.daopattern.daos.JpaUserDao;
import com.baeldung.daopattern.entities.User;
@@ -21,17 +22,17 @@ public class UserApplication {
getAllUsers().forEach(user -> System.out.println(user.getName()));
}
private static class JpaUserDaoHolder {
private static final JpaUserDao jpaUserDao = new JpaUserDao(new JpaEntityManagerFactory().getEntityManager());
}
public static Dao getJpaUserDao() {
if (jpaUserDao == null) {
EntityManager entityManager = Persistence.createEntityManagerFactory("user-unit").createEntityManager();
jpaUserDao = new JpaUserDao(entityManager);
}
return jpaUserDao;
return JpaUserDaoHolder.jpaUserDao;
}
public static User getUser(long id) {
Optional<User> user = getJpaUserDao().get(id);
return user.orElse(new User("Non-existing user", "no-email"));
return user.orElseGet(()-> {return new User("non-existing user", "no-email");});
}
public static List<User> getAllUsers() {

65
patterns/design-patterns/src/main/java/com/baeldung/daopattern/config/JpaEntityManagerFactory.java Normal file
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@@ -0,0 +1,65 @@
package com.baeldung.daopattern.config;
import com.baeldung.daopattern.entities.User;
import com.mysql.cj.jdbc.MysqlDataSource;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.stream.Collectors;
import javax.persistence.EntityManager;
import javax.sql.DataSource;
import javax.persistence.EntityManagerFactory;
import javax.persistence.spi.PersistenceUnitInfo;
import org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl;
import org.hibernate.jpa.boot.internal.PersistenceUnitInfoDescriptor;
public class JpaEntityManagerFactory {
private final String DB_URL = "jdbc:mysql://databaseurl";
private final String DB_USER_NAME = "username";
private final String DB_PASSWORD = "password";
public EntityManager getEntityManager() {
return getEntityManagerFactory().createEntityManager();
}
protected EntityManagerFactory getEntityManagerFactory() {
PersistenceUnitInfo persistenceUnitInfo = getPersistenceUnitInfo(getClass().getSimpleName());
Map<String, Object> configuration = new HashMap<>();
return new EntityManagerFactoryBuilderImpl(new PersistenceUnitInfoDescriptor(persistenceUnitInfo), configuration)
.build();
}
protected PersistenceUnitInfoImpl getPersistenceUnitInfo(String name) {
return new PersistenceUnitInfoImpl(name, getEntityClassNames(), getProperties());
}
protected List<String> getEntityClassNames() {
return Arrays.asList(getEntities())
.stream()
.map(Class::getName)
.collect(Collectors.toList());
}
protected Properties getProperties() {
Properties properties = new Properties();
properties.put("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
properties.put("hibernate.id.new_generator_mappings", false);
properties.put("hibernate.connection.datasource", getMysqlDataSource());
return properties;
}
protected Class[] getEntities() {
return new Class[]{User.class};
}
protected DataSource getMysqlDataSource() {
MysqlDataSource mysqlDataSource = new MysqlDataSource();
mysqlDataSource.setURL(DB_URL);
mysqlDataSource.setUser(DB_USER_NAME);
mysqlDataSource.setPassword(DB_PASSWORD);
return mysqlDataSource;
}
}

130
patterns/design-patterns/src/main/java/com/baeldung/daopattern/config/PersistenceUnitInfoImpl.java Normal file
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@@ -0,0 +1,130 @@
package com.baeldung.daopattern.config;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Properties;
import javax.sql.DataSource;
import javax.persistence.SharedCacheMode;
import javax.persistence.ValidationMode;
import javax.persistence.spi.ClassTransformer;
import javax.persistence.spi.PersistenceUnitInfo;
import javax.persistence.spi.PersistenceUnitTransactionType;
import org.hibernate.jpa.HibernatePersistenceProvider;
public class PersistenceUnitInfoImpl implements PersistenceUnitInfo {
public static final String JPA_VERSION = "2.1";
private final String persistenceUnitName;
private PersistenceUnitTransactionType transactionType = PersistenceUnitTransactionType.RESOURCE_LOCAL;
private final List<String> managedClassNames;
private final List<String> mappingFileNames = new ArrayList<>();
private final Properties properties;
private DataSource jtaDataSource;
private DataSource nonJtaDataSource;
public PersistenceUnitInfoImpl(String persistenceUnitName, List<String> managedClassNames, Properties properties) {
this.persistenceUnitName = persistenceUnitName;
this.managedClassNames = managedClassNames;
this.properties = properties;
}
@Override
public String getPersistenceUnitName() {
return persistenceUnitName;
}
@Override
public String getPersistenceProviderClassName() {
return HibernatePersistenceProvider.class.getName();
}
@Override
public PersistenceUnitTransactionType getTransactionType() {
return transactionType;
}
@Override
public DataSource getJtaDataSource() {
return jtaDataSource;
}
public PersistenceUnitInfoImpl setJtaDataSource(DataSource jtaDataSource) {
this.jtaDataSource = jtaDataSource;
this.nonJtaDataSource = null;
transactionType = PersistenceUnitTransactionType.JTA;
return this;
}
@Override
public DataSource getNonJtaDataSource() {
return nonJtaDataSource;
}
public PersistenceUnitInfoImpl setNonJtaDataSource(DataSource nonJtaDataSource) {
this.nonJtaDataSource = nonJtaDataSource;
this.jtaDataSource = null;
transactionType = PersistenceUnitTransactionType.RESOURCE_LOCAL;
return this;
}
@Override
public List<String> getMappingFileNames() {
return mappingFileNames;
}
@Override
public List<URL> getJarFileUrls() {
return Collections.emptyList();
}
@Override
public URL getPersistenceUnitRootUrl() {
return null;
}
@Override
public List<String> getManagedClassNames() {
return managedClassNames;
}
@Override
public boolean excludeUnlistedClasses() {
return false;
}
@Override
public SharedCacheMode getSharedCacheMode() {
return SharedCacheMode.UNSPECIFIED;
}
@Override
public ValidationMode getValidationMode() {
return ValidationMode.AUTO;
}
public Properties getProperties() {
return properties;
}
@Override
public String getPersistenceXMLSchemaVersion() {
return JPA_VERSION;
}
@Override
public ClassLoader getClassLoader() {
return Thread.currentThread().getContextClassLoader();
}
@Override
public void addTransformer(ClassTransformer transformer) {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public ClassLoader getNewTempClassLoader() {
return null;
}
}

6
patterns/design-patterns/src/main/resources/META-INF/persistence.xml
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@@ -2,12 +2,12 @@
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
<persistence-unit name="user-unit">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<class>com.baeldung.daopattern.entities.User</class>
<class>com.baeldung.pattern.daopattern.entities.User</class>
<properties>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://url/to/database"/>
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://databaseurl"/>
<property name="javax.persistence.jdbc.user" value="username"/>
<property name="javax.persistence.jdbc.password" value="passsword"/>
<property name="javax.persistence.jdbc.password" value="password"/>
<!-- Hibernate Properties -->
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.show_sql" value="true"/>

9
patterns/design-patterns/src/main/resources/log4jstructuraldp.properties Normal file
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@@ -0,0 +1,9 @@
# Root logger
log4j.rootLogger=INFO, file, stdout
# Write to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

11
patterns/design-patterns/src/test/java/com/baeldung/chainofresponsibility/ChainOfResponsibilityTest.java → patterns/design-patterns/src/test/java/com/baeldung/chainofresponsibility/ChainOfResponsibilityIntegrationTest.java
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@@ -1,10 +1,15 @@
package com.baeldung.pattern.chainofresponsibility;
package com.baeldung.chainofresponsibility;
import org.junit.Test;
import com.baeldung.pattern.chainofresponsibility.AuthenticationProcessor;
import com.baeldung.pattern.chainofresponsibility.OAuthAuthenticationProcessor;
import com.baeldung.pattern.chainofresponsibility.OAuthTokenProvider;
import com.baeldung.pattern.chainofresponsibility.UsernamePasswordProvider;
import com.baeldung.pattern.chainofresponsibility.SamlAuthenticationProvider;
import com.baeldung.pattern.chainofresponsibility.UsernamePasswordAuthenticationProcessor;
import static org.junit.Assert.assertTrue;
public class ChainOfResponsibilityTest {
public class ChainOfResponsibilityIntegrationTest {
private static AuthenticationProcessor getChainOfAuthProcessor() {

2
patterns/design-patterns/src/test/java/com/baeldung/facade/CarEngineFacadeTest.java → patterns/design-patterns/src/test/java/com/baeldung/facade/CarEngineFacadeIntegrationTest.java
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@@ -13,7 +13,7 @@ import java.util.List;
import static org.junit.Assert.*;
public class CarEngineFacadeTest {
public class CarEngineFacadeIntegrationTest {
private InMemoryCustomTestAppender appender;

12
patterns/design-patterns/src/test/java/com/baeldung/singleton/synchronization/SingletonSynchronizationUnitTest.java → patterns/design-patterns/src/test/java/com/baeldung/singleton/synchronization/SingletonSynchronizationIntegrationTest.java
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@@ -15,7 +15,7 @@ import org.junit.Test;
* @author Donato Rimenti
*
*/
public class SingletonSynchronizationUnitTest {
public class SingletonSynchronizationIntegrationTest {
/**
* Size of the thread pools used.
@@ -33,7 +33,7 @@ public class SingletonSynchronizationUnitTest {
@Test
public void givenDraconianSingleton_whenMultithreadInstancesEquals_thenTrue() {
ExecutorService executor = Executors.newFixedThreadPool(POOL_SIZE);
Set<DraconianSingleton> resultSet = Collections.synchronizedSet(new HashSet<DraconianSingleton>());
Set<DraconianSingleton> resultSet = Collections.synchronizedSet(new HashSet<>());
// Submits the instantiation tasks.
for (int i = 0; i < TASKS_TO_SUBMIT; i++) {
@@ -51,7 +51,7 @@ public class SingletonSynchronizationUnitTest {
@Test
public void givenDclSingleton_whenMultithreadInstancesEquals_thenTrue() {
ExecutorService executor = Executors.newFixedThreadPool(POOL_SIZE);
Set<DclSingleton> resultSet = Collections.synchronizedSet(new HashSet<DclSingleton>());
Set<DclSingleton> resultSet = Collections.synchronizedSet(new HashSet<>());
// Submits the instantiation tasks.
for (int i = 0; i < TASKS_TO_SUBMIT; i++) {
@@ -69,7 +69,7 @@ public class SingletonSynchronizationUnitTest {
@Test
public void givenEarlyInitSingleton_whenMultithreadInstancesEquals_thenTrue() {
ExecutorService executor = Executors.newFixedThreadPool(POOL_SIZE);
Set<EarlyInitSingleton> resultSet = Collections.synchronizedSet(new HashSet<EarlyInitSingleton>());
Set<EarlyInitSingleton> resultSet = Collections.synchronizedSet(new HashSet<>());
// Submits the instantiation tasks.
for (int i = 0; i < TASKS_TO_SUBMIT; i++) {
@@ -87,7 +87,7 @@ public class SingletonSynchronizationUnitTest {
@Test
public void givenInitOnDemandSingleton_whenMultithreadInstancesEquals_thenTrue() {
ExecutorService executor = Executors.newFixedThreadPool(POOL_SIZE);
Set<InitOnDemandSingleton> resultSet = Collections.synchronizedSet(new HashSet<InitOnDemandSingleton>());
Set<InitOnDemandSingleton> resultSet = Collections.synchronizedSet(new HashSet<>());
// Submits the instantiation tasks.
for (int i = 0; i < TASKS_TO_SUBMIT; i++) {
@@ -105,7 +105,7 @@ public class SingletonSynchronizationUnitTest {
@Test
public void givenEnumSingleton_whenMultithreadInstancesEquals_thenTrue() {
ExecutorService executor = Executors.newFixedThreadPool(POOL_SIZE);
Set<EnumSingleton> resultSet = Collections.synchronizedSet(new HashSet<EnumSingleton>());
Set<EnumSingleton> resultSet = Collections.synchronizedSet(new HashSet<>());
// Submits the instantiation tasks.
for (int i = 0; i < TASKS_TO_SUBMIT; i++) {

4
patterns/design-patterns/src/test/java/com/baeldung/templatemethod/test/TemplateMethodPatternTest.java → patterns/design-patterns/src/test/java/com/baeldung/templatemethod/test/TemplateMethodPatternIntegrationTest.java
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@@ -1,4 +1,4 @@
package com.baeldung.pattern.templatemethod.test;
package com.baeldung.templatemethod.test;
import com.baeldung.pattern.templatemethod.model.Computer;
import com.baeldung.pattern.templatemethod.model.HighEndComputerBuilder;
@@ -10,7 +10,7 @@ import org.junit.Test;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.junit.Assert.assertThat;
public class TemplateMethodPatternTest {
public class TemplateMethodPatternIntegrationTest {
private static StandardComputerBuilder standardComputerBuilder;
private static HighEndComputerBuilder highEndComputerBuilder;