/*
* Copyright 2002-2014 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.jpa.vendor;
import java.lang.reflect.Method;
import javax.persistence.EntityManagerFactory;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.orm.jpa.EntityManagerFactoryAccessor;
import org.springframework.util.Assert;
import org.springframework.util.ReflectionUtils;
/**
* Simple {@code FactoryBean} that exposes the underlying {@link SessionFactory}
* behind a Hibernate-backed JPA {@link EntityManagerFactory}.
*
* <p>Primarily available for resolving a SessionFactory by JPA persistence unit name
* via the {@link #setPersistenceUnitName "persistenceUnitName"} bean property.
*
* @author Juergen Hoeller
* @since 3.1
* @see #setPersistenceUnitName
* @see #setEntityManagerFactory
*/
public class HibernateJpaSessionFactoryBean extends EntityManagerFactoryAccessor implements FactoryBean<SessionFactory> {
@Override
public SessionFactory getObject() {
EntityManagerFactory emf = getEntityManagerFactory();
Assert.state(emf != null, "EntityManagerFactory must not be null");
try {
Method getSessionFactory = emf.getClass().getMethod("getSessionFactory");
return (SessionFactory) ReflectionUtils.invokeMethod(getSessionFactory, emf);
}
catch (NoSuchMethodException ex) {
throw new IllegalStateException("No compatible Hibernate EntityManagerFactory found: " + ex);
}
}
@Override
public Class<?> getObjectType() {
return SessionFactory.class;
}
@Override
public boolean isSingleton() {
return true;
}
}