org.springframework.orm.hibernate4.LocalSessionFactoryBuilder Maven / Gradle / Ivy
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/*
* 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.
* 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.orm.hibernate4;
import java.io.IOException;
import javax.persistence.Embeddable;
import javax.persistence.Entity;
import javax.persistence.MappedSuperclass;
import javax.sql.DataSource;
import javax.transaction.TransactionManager;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AvailableSettings;
import org.hibernate.cfg.Configuration;
import org.hibernate.cfg.Environment;
import org.hibernate.engine.transaction.internal.jta.CMTTransactionFactory;
import org.hibernate.service.jta.platform.internal.WebSphereExtendedJtaPlatform;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternUtils;
import org.springframework.core.type.classreading.CachingMetadataReaderFactory;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.core.type.filter.AnnotationTypeFilter;
import org.springframework.core.type.filter.TypeFilter;
import org.springframework.transaction.jta.JtaTransactionManager;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
/**
* A Spring-provided extension of the standard Hibernate {@link Configuration} class,
* adding {@link SpringSessionContext} as a default and providing convenient ways
* to specify a DataSource and an application class loader.
*
* This is designed for programmatic use, e.g. in {@code @Bean} factory methods.
* Consider using {@link LocalSessionFactoryBean} for XML bean definition files.
*
*
NOTE: To set up Hibernate 4 for Spring-driven JTA transactions, make
* sure to either use the {@link #setJtaTransactionManager} method or to set the
* "hibernate.transaction.factory_class" property to {@link CMTTransactionFactory}.
* Otherwise, Hibernate's smart flushing mechanism won't work properly.
*
* @author Juergen Hoeller
* @since 3.1
* @see LocalSessionFactoryBean
*/
@SuppressWarnings("serial")
public class LocalSessionFactoryBuilder extends Configuration {
private static final String RESOURCE_PATTERN = "/**/*.class";
private static final String PACKAGE_INFO_SUFFIX = ".package-info";
private static final TypeFilter[] ENTITY_TYPE_FILTERS = new TypeFilter[] {
new AnnotationTypeFilter(Entity.class, false),
new AnnotationTypeFilter(Embeddable.class, false),
new AnnotationTypeFilter(MappedSuperclass.class, false)};
private final ResourcePatternResolver resourcePatternResolver;
/**
* Create a new LocalSessionFactoryBuilder for the given DataSource.
* @param dataSource the JDBC DataSource that the resulting Hibernate SessionFactory should be using
* (may be {@code null})
*/
public LocalSessionFactoryBuilder(DataSource dataSource) {
this(dataSource, new PathMatchingResourcePatternResolver());
}
/**
* Create a new LocalSessionFactoryBuilder for the given DataSource.
* @param dataSource the JDBC DataSource that the resulting Hibernate SessionFactory should be using
* (may be {@code null})
* @param classLoader the ClassLoader to load application classes from
*/
public LocalSessionFactoryBuilder(DataSource dataSource, ClassLoader classLoader) {
this(dataSource, new PathMatchingResourcePatternResolver(classLoader));
}
/**
* Create a new LocalSessionFactoryBuilder for the given DataSource.
* @param dataSource the JDBC DataSource that the resulting Hibernate SessionFactory should be using
* (may be {@code null})
* @param resourceLoader the ResourceLoader to load application classes from
*/
public LocalSessionFactoryBuilder(DataSource dataSource, ResourceLoader resourceLoader) {
getProperties().put(Environment.CURRENT_SESSION_CONTEXT_CLASS, SpringSessionContext.class.getName());
if (dataSource != null) {
getProperties().put(Environment.DATASOURCE, dataSource);
}
getProperties().put(AvailableSettings.APP_CLASSLOADER, resourceLoader.getClassLoader());
this.resourcePatternResolver = ResourcePatternUtils.getResourcePatternResolver(resourceLoader);
}
/**
* Set the Spring {@link JtaTransactionManager} or the JTA {@link TransactionManager}
* to be used with Hibernate, if any. Allows for using a Spring-managed transaction
* manager for Hibernate 4's session and cache synchronization, with the
* "hibernate.transaction.jta.platform" automatically set to it. Also sets
* "hibernate.transaction.factory_class" to {@link CMTTransactionFactory},
* instructing Hibernate to interact with externally managed transactions.
*
A passed-in Spring {@link JtaTransactionManager} needs to contain a JTA
* {@link TransactionManager} reference to be usable here, except for the WebSphere
* case where we'll automatically set {@link WebSphereExtendedJtaPlatform} accordingly.
*
Note: If this is set, the Hibernate settings should not contain a JTA platform
* setting to avoid meaningless double configuration.
*/
public LocalSessionFactoryBuilder setJtaTransactionManager(Object jtaTransactionManager) {
Assert.notNull(jtaTransactionManager, "Transaction manager reference must not be null");
if (jtaTransactionManager instanceof JtaTransactionManager) {
boolean webspherePresent = ClassUtils.isPresent("com.ibm.wsspi.uow.UOWManager", getClass().getClassLoader());
if (webspherePresent) {
getProperties().put(AvailableSettings.JTA_PLATFORM, new WebSphereExtendedJtaPlatform());
}
else {
JtaTransactionManager jtaTm = (JtaTransactionManager) jtaTransactionManager;
if (jtaTm.getTransactionManager() == null) {
throw new IllegalArgumentException(
"Can only apply JtaTransactionManager which has a TransactionManager reference set");
}
getProperties().put(AvailableSettings.JTA_PLATFORM,
new ConfigurableJtaPlatform(jtaTm.getTransactionManager(), jtaTm.getUserTransaction()));
}
}
else if (jtaTransactionManager instanceof TransactionManager) {
getProperties().put(AvailableSettings.JTA_PLATFORM,
new ConfigurableJtaPlatform((TransactionManager) jtaTransactionManager, null));
}
else {
throw new IllegalArgumentException(
"Unknown transaction manager type: " + jtaTransactionManager.getClass().getName());
}
getProperties().put(AvailableSettings.TRANSACTION_STRATEGY, new CMTTransactionFactory());
return this;
}
/**
* Add the given annotated classes in a batch.
* @see #addAnnotatedClass
* @see #scanPackages
*/
public LocalSessionFactoryBuilder addAnnotatedClasses(Class... annotatedClasses) {
for (Class annotatedClass : annotatedClasses) {
addAnnotatedClass(annotatedClass);
}
return this;
}
/**
* Add the given annotated packages in a batch.
* @see #addPackage
* @see #scanPackages
*/
public LocalSessionFactoryBuilder addPackages(String... annotatedPackages) {
for (String annotatedPackage :annotatedPackages) {
addPackage(annotatedPackage);
}
return this;
}
/**
* Perform Spring-based scanning for entity classes, registering them
* as annotated classes with this {@code Configuration}.
* @param packagesToScan one or more Java package names
* @throws HibernateException if scanning fails for any reason
*/
public LocalSessionFactoryBuilder scanPackages(String... packagesToScan) throws HibernateException {
try {
for (String pkg : packagesToScan) {
String pattern = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX +
ClassUtils.convertClassNameToResourcePath(pkg) + RESOURCE_PATTERN;
Resource[] resources = this.resourcePatternResolver.getResources(pattern);
MetadataReaderFactory readerFactory = new CachingMetadataReaderFactory(this.resourcePatternResolver);
for (Resource resource : resources) {
if (resource.isReadable()) {
MetadataReader reader = readerFactory.getMetadataReader(resource);
String className = reader.getClassMetadata().getClassName();
if (matchesEntityTypeFilter(reader, readerFactory)) {
addAnnotatedClass(this.resourcePatternResolver.getClassLoader().loadClass(className));
}
else if (className.endsWith(PACKAGE_INFO_SUFFIX)) {
addPackage(className.substring(0, className.length() - PACKAGE_INFO_SUFFIX.length()));
}
}
}
}
return this;
}
catch (IOException ex) {
throw new MappingException("Failed to scan classpath for unlisted classes", ex);
}
catch (ClassNotFoundException ex) {
throw new MappingException("Failed to load annotated classes from classpath", ex);
}
}
/**
* Check whether any of the configured entity type filters matches
* the current class descriptor contained in the metadata reader.
*/
private boolean matchesEntityTypeFilter(MetadataReader reader, MetadataReaderFactory readerFactory) throws IOException {
for (TypeFilter filter : ENTITY_TYPE_FILTERS) {
if (filter.match(reader, readerFactory)) {
return true;
}
}
return false;
}
/**
* Build the {@code SessionFactory}.
*/
@Override
@SuppressWarnings("deprecation")
public SessionFactory buildSessionFactory() throws HibernateException {
ClassLoader appClassLoader = (ClassLoader) getProperties().get(AvailableSettings.APP_CLASSLOADER);
Thread currentThread = Thread.currentThread();
ClassLoader threadContextClassLoader = currentThread.getContextClassLoader();
boolean overrideClassLoader =
(appClassLoader != null && !appClassLoader.equals(threadContextClassLoader));
if (overrideClassLoader) {
currentThread.setContextClassLoader(appClassLoader);
}
try {
return super.buildSessionFactory();
}
finally {
if (overrideClassLoader) {
currentThread.setContextClassLoader(threadContextClassLoader);
}
}
}
}