https://github.com/spring-projects/spring-framework: Spring Object/Relational Mapping (Spring IO)
  • Juergen Hoeller 
/*
 * Copyright 2002-2020 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
 *
 *      https://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.hibernate5;

import java.io.IOException;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Collections;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;

import javax.persistence.AttributeConverter;
import javax.persistence.Converter;
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.boot.MetadataSources;
import org.hibernate.boot.registry.BootstrapServiceRegistryBuilder;
import org.hibernate.cache.spi.RegionFactory;
import org.hibernate.cfg.AvailableSettings;
import org.hibernate.cfg.Configuration;
import org.hibernate.context.spi.CurrentTenantIdentifierResolver;
import org.hibernate.engine.jdbc.connections.spi.MultiTenantConnectionProvider;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.resource.jdbc.spi.PhysicalConnectionHandlingMode;

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.core.InfrastructureProxy;
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.task.AsyncTaskExecutor;
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.lang.Nullable;
import org.springframework.transaction.jta.JtaTransactionManager;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;


A Spring-provided extension of the standard Hibernate Configuration class, adding SpringSessionContext as a default and providing convenient ways to specify a JDBC DataSource and an application class loader. 
This is designed for programmatic use, e.g. in @Bean factory methods; consider using LocalSessionFactoryBean for XML bean definition files. Typically combined with HibernateTransactionManager for declarative transactions against the SessionFactory and its JDBC DataSource. 
Compatible with Hibernate 5.2/5.3/5.4, as of Spring 5.3. This Hibernate-specific factory builder can also be a convenient way to set up a JPA EntityManagerFactory since the Hibernate SessionFactory natively exposes the JPA EntityManagerFactory interface as well now. 
This builder supports Hibernate 5.3/5.4 BeanContainer integration, MetadataSources from custom BootstrapServiceRegistryBuilder setup, as well as other advanced Hibernate configuration options beyond the standard JPA bootstrap contract. 
Author:Juergen Hoeller
See Also:
Since:4.2
/**
 * A Spring-provided extension of the standard Hibernate {@link Configuration} class,
 * adding {@link SpringSessionContext} as a default and providing convenient ways
 * to specify a JDBC {@link DataSource} and an application class loader.
 *
 * <p>This is designed for programmatic use, e.g. in {@code @Bean} factory methods;
 * consider using {@link LocalSessionFactoryBean} for XML bean definition files.
 * Typically combined with {@link HibernateTransactionManager} for declarative
 * transactions against the {@code SessionFactory} and its JDBC {@code DataSource}.
 *
 * <p>Compatible with Hibernate 5.2/5.3/5.4, as of Spring 5.3.
 * This Hibernate-specific factory builder can also be a convenient way to set up
 * a JPA {@code EntityManagerFactory} since the Hibernate {@code SessionFactory}
 * natively exposes the JPA {@code EntityManagerFactory} interface as well now.
 *
 * <p>This builder supports Hibernate 5.3/5.4 {@code BeanContainer} integration,
 * {@link MetadataSources} from custom {@link BootstrapServiceRegistryBuilder}
 * setup, as well as other advanced Hibernate configuration options beyond the
 * standard JPA bootstrap contract.
 *
 * @author Juergen Hoeller
 * @since 4.2
 * @see HibernateTransactionManager
 * @see LocalSessionFactoryBean
 * @see #setBeanContainer
 * @see #LocalSessionFactoryBuilder(DataSource, ResourceLoader, MetadataSources)
 * @see BootstrapServiceRegistryBuilder
 */
@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[] DEFAULT_ENTITY_TYPE_FILTERS = new TypeFilter[] {
			new AnnotationTypeFilter(Entity.class, false),
			new AnnotationTypeFilter(Embeddable.class, false),
			new AnnotationTypeFilter(MappedSuperclass.class, false)};

	private static final TypeFilter CONVERTER_TYPE_FILTER = new AnnotationTypeFilter(Converter.class, false);


	private final ResourcePatternResolver resourcePatternResolver;

	@Nullable
	private TypeFilter[] entityTypeFilters = DEFAULT_ENTITY_TYPE_FILTERS;


	
Create a new LocalSessionFactoryBuilder for the given DataSource.

Params:
  • dataSource – the JDBC DataSource that the resulting Hibernate SessionFactory should be using (may be null)
/**
	 * 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(@Nullable DataSource dataSource) {
		this(dataSource, new PathMatchingResourcePatternResolver());
	}

	
Create a new LocalSessionFactoryBuilder for the given DataSource.

Params:
  • dataSource – the JDBC DataSource that the resulting Hibernate SessionFactory should be using (may be null)
  • classLoader – the ClassLoader to load application classes from
/**
	 * 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(@Nullable DataSource dataSource, ClassLoader classLoader) {
		this(dataSource, new PathMatchingResourcePatternResolver(classLoader));
	}

	
Create a new LocalSessionFactoryBuilder for the given DataSource.

Params:
  • dataSource – the JDBC DataSource that the resulting Hibernate SessionFactory should be using (may be null)
  • resourceLoader – the ResourceLoader to load application classes from
/**
	 * 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(@Nullable DataSource dataSource, ResourceLoader resourceLoader) {
		this(dataSource, resourceLoader, new MetadataSources(
				new BootstrapServiceRegistryBuilder().applyClassLoader(resourceLoader.getClassLoader()).build()));
	}

	
Create a new LocalSessionFactoryBuilder for the given DataSource.

Params:
  • dataSource – the JDBC DataSource that the resulting Hibernate SessionFactory should be using (may be null)
  • resourceLoader – the ResourceLoader to load application classes from
  • metadataSources – the Hibernate MetadataSources service to use (e.g. reusing an existing one)
Since:4.3
/**
	 * 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
	 * @param metadataSources the Hibernate MetadataSources service to use (e.g. reusing an existing one)
	 * @since 4.3
	 */
	public LocalSessionFactoryBuilder(
			@Nullable DataSource dataSource, ResourceLoader resourceLoader, MetadataSources metadataSources) {

		super(metadataSources);

		getProperties().put(AvailableSettings.CURRENT_SESSION_CONTEXT_CLASS, SpringSessionContext.class.getName());
		if (dataSource != null) {
			getProperties().put(AvailableSettings.DATASOURCE, dataSource);
		}
		getProperties().put(AvailableSettings.CONNECTION_HANDLING,
				PhysicalConnectionHandlingMode.DELAYED_ACQUISITION_AND_HOLD);

		getProperties().put(AvailableSettings.CLASSLOADERS, Collections.singleton(resourceLoader.getClassLoader()));
		this.resourcePatternResolver = ResourcePatternUtils.getResourcePatternResolver(resourceLoader);
	}


	
Set the Spring JtaTransactionManager or the JTA TransactionManager to be used with Hibernate, if any. Allows for using a Spring-managed transaction manager for Hibernate 5's session and cache synchronization, with the "hibernate.transaction.jta.platform" automatically set to it. 
A passed-in Spring JtaTransactionManager needs to contain a JTA TransactionManager reference to be usable here, except for the WebSphere case where we'll automatically set WebSphereExtendedJtaPlatform accordingly. 
Note: If this is set, the Hibernate settings should not contain a JTA platform
setting to avoid meaningless double configuration.

/**
	 * 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 5's session and cache synchronization, with the
	 * "hibernate.transaction.jta.platform" automatically set to it.
	 * <p>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 {@code WebSphereExtendedJtaPlatform} accordingly.
	 * <p>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,
						"org.hibernate.engine.transaction.jta.platform.internal.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(),
								jtaTm.getTransactionSynchronizationRegistry()));
			}
		}
		else if (jtaTransactionManager instanceof TransactionManager) {
			getProperties().put(AvailableSettings.JTA_PLATFORM,
					new ConfigurableJtaPlatform((TransactionManager) jtaTransactionManager, null, null));
		}
		else {
			throw new IllegalArgumentException(
					"Unknown transaction manager type: " + jtaTransactionManager.getClass().getName());
		}

		getProperties().put(AvailableSettings.TRANSACTION_COORDINATOR_STRATEGY, "jta");
		getProperties().put(AvailableSettings.CONNECTION_HANDLING,
				PhysicalConnectionHandlingMode.DELAYED_ACQUISITION_AND_RELEASE_AFTER_STATEMENT);

		return this;
	}

	
Set a Hibernate BeanContainer for the given Spring ConfigurableListableBeanFactory. 
Note: Bean container integration requires Hibernate 5.3 or higher.
It enables autowiring of Hibernate attribute converters and entity listeners.

See Also:
Since:5.1
/**
	 * Set a Hibernate {@link org.hibernate.resource.beans.container.spi.BeanContainer}
	 * for the given Spring {@link ConfigurableListableBeanFactory}.
	 * <p>Note: Bean container integration requires Hibernate 5.3 or higher.
	 * It enables autowiring of Hibernate attribute converters and entity listeners.
	 * @since 5.1
	 * @see SpringBeanContainer
	 * @see AvailableSettings#BEAN_CONTAINER
	 */
	public LocalSessionFactoryBuilder setBeanContainer(ConfigurableListableBeanFactory beanFactory) {
		getProperties().put(AvailableSettings.BEAN_CONTAINER, new SpringBeanContainer(beanFactory));
		return this;
	}

	
Set the Hibernate RegionFactory to use for the SessionFactory. Allows for using a Spring-managed RegionFactory instance. 
Note: If this is set, the Hibernate settings should not define a
cache provider to avoid meaningless double configuration.

See Also:
  • CACHE_REGION_FACTORY.CACHE_REGION_FACTORY
Since:5.1
/**
	 * Set the Hibernate {@link RegionFactory} to use for the SessionFactory.
	 * Allows for using a Spring-managed {@code RegionFactory} instance.
	 * <p>Note: If this is set, the Hibernate settings should not define a
	 * cache provider to avoid meaningless double configuration.
	 * @since 5.1
	 * @see AvailableSettings#CACHE_REGION_FACTORY
	 */
	public LocalSessionFactoryBuilder setCacheRegionFactory(RegionFactory cacheRegionFactory) {
		getProperties().put(AvailableSettings.CACHE_REGION_FACTORY, cacheRegionFactory);
		return this;
	}

	
Set a MultiTenantConnectionProvider to be passed on to the SessionFactory. 
See Also:
  • MULTI_TENANT_CONNECTION_PROVIDER.MULTI_TENANT_CONNECTION_PROVIDER
Since:4.3
/**
	 * Set a {@link MultiTenantConnectionProvider} to be passed on to the SessionFactory.
	 * @since 4.3
	 * @see AvailableSettings#MULTI_TENANT_CONNECTION_PROVIDER
	 */
	public LocalSessionFactoryBuilder setMultiTenantConnectionProvider(MultiTenantConnectionProvider multiTenantConnectionProvider) {
		getProperties().put(AvailableSettings.MULTI_TENANT_CONNECTION_PROVIDER, multiTenantConnectionProvider);
		return this;
	}

	
Overridden to reliably pass a CurrentTenantIdentifierResolver to the SessionFactory. 
See Also:
  • MULTI_TENANT_IDENTIFIER_RESOLVER.MULTI_TENANT_IDENTIFIER_RESOLVER
Since:4.3.2
/**
	 * Overridden to reliably pass a {@link CurrentTenantIdentifierResolver} to the SessionFactory.
	 * @since 4.3.2
	 * @see AvailableSettings#MULTI_TENANT_IDENTIFIER_RESOLVER
	 */
	@Override
	public void setCurrentTenantIdentifierResolver(CurrentTenantIdentifierResolver currentTenantIdentifierResolver) {
		getProperties().put(AvailableSettings.MULTI_TENANT_IDENTIFIER_RESOLVER, currentTenantIdentifierResolver);
		super.setCurrentTenantIdentifierResolver(currentTenantIdentifierResolver);
	}

	
Specify custom type filters for Spring-based scanning for entity classes.

Default is to search all specified packages for classes annotated with @javax.persistence.Entity, @javax.persistence.Embeddable or @javax.persistence.MappedSuperclass. 
See Also:
  • scanPackages
/**
	 * Specify custom type filters for Spring-based scanning for entity classes.
	 * <p>Default is to search all specified packages for classes annotated with
	 * {@code @javax.persistence.Entity}, {@code @javax.persistence.Embeddable}
	 * or {@code @javax.persistence.MappedSuperclass}.
	 * @see #scanPackages
	 */
	public LocalSessionFactoryBuilder setEntityTypeFilters(TypeFilter... entityTypeFilters) {
		this.entityTypeFilters = entityTypeFilters;
		return this;
	}

	
Add the given annotated classes in a batch.

See Also:
  • addAnnotatedClass
  • scanPackages
/**
	 * 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 Also:
  • addPackage
  • scanPackages
/**
	 * 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 Configuration. 
Params:
  • packagesToScan – one or more Java package names
Throws:
  • HibernateException – if scanning fails for any reason
/**
	 * 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
	 */
	@SuppressWarnings("unchecked")
	public LocalSessionFactoryBuilder scanPackages(String... packagesToScan) throws HibernateException {
		Set<String> entityClassNames = new TreeSet<>();
		Set<String> converterClassNames = new TreeSet<>();
		Set<String> packageNames = new TreeSet<>();
		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)) {
							entityClassNames.add(className);
						}
						else if (CONVERTER_TYPE_FILTER.match(reader, readerFactory)) {
							converterClassNames.add(className);
						}
						else if (className.endsWith(PACKAGE_INFO_SUFFIX)) {
							packageNames.add(className.substring(0, className.length() - PACKAGE_INFO_SUFFIX.length()));
						}
					}
				}
			}
		}
		catch (IOException ex) {
			throw new MappingException("Failed to scan classpath for unlisted classes", ex);
		}
		try {
			ClassLoader cl = this.resourcePatternResolver.getClassLoader();
			for (String className : entityClassNames) {
				addAnnotatedClass(ClassUtils.forName(className, cl));
			}
			for (String className : converterClassNames) {
				addAttributeConverter((Class<? extends AttributeConverter<?, ?>>) ClassUtils.forName(className, cl));
			}
			for (String packageName : packageNames) {
				addPackage(packageName);
			}
		}
		catch (ClassNotFoundException ex) {
			throw new MappingException("Failed to load annotated classes from classpath", ex);
		}
		return this;
	}

	
Check whether any of the configured entity type filters matches
the current class descriptor contained in the metadata reader.

/**
	 * 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 {
		if (this.entityTypeFilters != null) {
			for (TypeFilter filter : this.entityTypeFilters) {
				if (filter.match(reader, readerFactory)) {
					return true;
				}
			}
		}
		return false;
	}

	
Build the Hibernate SessionFactory through background bootstrapping, using the given executor for a parallel initialization phase (e.g. a SimpleAsyncTaskExecutor). 
SessionFactory initialization will then switch into background bootstrap mode, with a SessionFactory proxy immediately returned for injection purposes instead of waiting for Hibernate's bootstrapping to complete. However, note that the first actual call to a SessionFactory method will then block until Hibernate's bootstrapping completed, if not ready by then. For maximum benefit, make sure to avoid early SessionFactory calls in init methods of related beans, even for metadata introspection purposes. 
See Also:
  • buildSessionFactory()
Since:4.3
/**
	 * Build the Hibernate {@code SessionFactory} through background bootstrapping,
	 * using the given executor for a parallel initialization phase
	 * (e.g. a {@link org.springframework.core.task.SimpleAsyncTaskExecutor}).
	 * <p>{@code SessionFactory} initialization will then switch into background
	 * bootstrap mode, with a {@code SessionFactory} proxy immediately returned for
	 * injection purposes instead of waiting for Hibernate's bootstrapping to complete.
	 * However, note that the first actual call to a {@code SessionFactory} method will
	 * then block until Hibernate's bootstrapping completed, if not ready by then.
	 * For maximum benefit, make sure to avoid early {@code SessionFactory} calls
	 * in init methods of related beans, even for metadata introspection purposes.
	 * @since 4.3
	 * @see #buildSessionFactory()
	 */
	public SessionFactory buildSessionFactory(AsyncTaskExecutor bootstrapExecutor) {
		Assert.notNull(bootstrapExecutor, "AsyncTaskExecutor must not be null");
		return (SessionFactory) Proxy.newProxyInstance(this.resourcePatternResolver.getClassLoader(),
				new Class<?>[] {SessionFactoryImplementor.class, InfrastructureProxy.class},
				new BootstrapSessionFactoryInvocationHandler(bootstrapExecutor));
	}


	
Proxy invocation handler for background bootstrapping, only enforcing a fully initialized target SessionFactory when actually needed. 
Since:4.3
/**
	 * Proxy invocation handler for background bootstrapping, only enforcing
	 * a fully initialized target {@code SessionFactory} when actually needed.
	 * @since 4.3
	 */
	private class BootstrapSessionFactoryInvocationHandler implements InvocationHandler {

		private final Future<SessionFactory> sessionFactoryFuture;

		public BootstrapSessionFactoryInvocationHandler(AsyncTaskExecutor bootstrapExecutor) {
			this.sessionFactoryFuture = bootstrapExecutor.submit(
					(Callable<SessionFactory>) LocalSessionFactoryBuilder.this::buildSessionFactory);
		}

		@Override
		public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
			switch (method.getName()) {
				case "equals":
					// Only consider equal when proxies are identical.
					return (proxy == args[0]);
				case "hashCode":
					// Use hashCode of EntityManagerFactory proxy.
					return System.identityHashCode(proxy);
				case "getProperties":
					return getProperties();
				case "getWrappedObject":
					// Call coming in through InfrastructureProxy interface...
					return getSessionFactory();
			}

			// Regular delegation to the target SessionFactory,
			// enforcing its full initialization...
			try {
				return method.invoke(getSessionFactory(), args);
			}
			catch (InvocationTargetException ex) {
				throw ex.getTargetException();
			}
		}

		private SessionFactory getSessionFactory() {
			try {
				return this.sessionFactoryFuture.get();
			}
			catch (InterruptedException ex) {
				Thread.currentThread().interrupt();
				throw new IllegalStateException("Interrupted during initialization of Hibernate SessionFactory", ex);
			}
			catch (ExecutionException ex) {
				Throwable cause = ex.getCause();
				if (cause instanceof HibernateException) {
					// Rethrow a provider configuration exception (possibly with a nested cause) directly
					throw (HibernateException) cause;
				}
				throw new IllegalStateException("Failed to asynchronously initialize Hibernate SessionFactory: " +
						ex.getMessage(), cause);
			}
		}
	}

}