/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.wildfly.extension.picketlink.idm.jpa.transaction;
import org.wildfly.extension.picketlink.logging.PicketLinkLogger;
import javax.persistence.EntityManager;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import javax.transaction.TransactionSynchronizationRegistry;
/**
* <p>A helper that knows how to associate {@link javax.persistence.EntityManager} instances with active transactions.</p>
*
* @author Pedro Igor (reusing code from JPA subsystem)
*/
public class TransactionalEntityManagerHelper {
private final TransactionSynchronizationRegistry transactionSynchronizationRegistry;
private final TransactionManager transactionManager;
public TransactionalEntityManagerHelper(TransactionSynchronizationRegistry transactionSynchronizationRegistry,
TransactionManager transactionManager) {
this.transactionSynchronizationRegistry = transactionSynchronizationRegistry;
this.transactionManager = transactionManager;
}
/**
* Get current persistence context. Only call while a transaction is active in the current thread.
*
* @param puScopedName
* @return
*/
public EntityManager getTransactionScopedEntityManager(String puScopedName) {
return (EntityManager) this.transactionSynchronizationRegistry.getResource(puScopedName);
}
/**
* Save the specified EntityManager in the local threads active transaction. The TransactionSynchronizationRegistry
* will clear the reference to the EntityManager when the transaction completes.
*
* @param scopedPuName
* @param entityManager
*/
public void putEntityManagerInTransactionRegistry(String scopedPuName, EntityManager entityManager) {
try {
Transaction transaction = this.transactionManager.getTransaction();
transaction.registerSynchronization(new TransactionalEntityManagerSynchronization(entityManager));
this.transactionSynchronizationRegistry.putResource(scopedPuName, entityManager);
} catch (Exception e) {
throw PicketLinkLogger.ROOT_LOGGER.idmJpaFailedCreateTransactionEntityManager(e);
}
}
}