Hibernate example source code file (JtaTransactionFactory.java)

This example Hibernate source code file (JtaTransactionFactory.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

connectionreleasemode, jtaplatform, jtatransaction, jtatransaction, jtatransactionfactory, override, override, systemexception, transaction, transactionexception, transactionfactory, unable, unable, usertransaction, usertransaction

The Hibernate JtaTransactionFactory.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2007-2011, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program 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 distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.engine.transaction.internal.jta;

import org.hibernate.ConnectionReleaseMode;
import org.hibernate.TransactionException;
import org.hibernate.engine.transaction.spi.JoinStatus;
import org.hibernate.engine.transaction.spi.TransactionCoordinator;
import org.hibernate.engine.transaction.spi.TransactionFactory;
import org.hibernate.service.jta.platform.spi.JtaPlatform;

import javax.transaction.SystemException;
import javax.transaction.UserTransaction;

/**
 * Factory for {@link JtaTransaction} instances.
 *
 * @author Gavin King
 * @author Steve Ebersole
 * @author Les Hazlewood
 */
public class JtaTransactionFactory implements TransactionFactory<JtaTransaction> {
	@Override
	public JtaTransaction createTransaction(TransactionCoordinator transactionCoordinator) {
		return new JtaTransaction( transactionCoordinator );
	}

	@Override
	public boolean canBeDriver() {
		return true;
	}

	@Override
	public ConnectionReleaseMode getDefaultReleaseMode() {
		return ConnectionReleaseMode.AFTER_STATEMENT;
	}

	@Override
	public boolean compatibleWithJtaSynchronization() {
		return true;
	}

	@Override
	public boolean isJoinableJtaTransaction(TransactionCoordinator transactionCoordinator, JtaTransaction transaction) {
		try {
			// Essentially:
			// 1) If we have a local (Hibernate) transaction in progress
			//      and it already has the UserTransaction cached, use that
			//      UserTransaction to determine the status.
			// 2) If a transaction manager has been located, use
			//      that transaction manager to determine the status.
			// 3) Finally, as the last resort, try to lookup the
			//      UserTransaction via JNDI and use that to determine the
			//      status.
			if ( transaction != null ) {
				UserTransaction ut = transaction.getUserTransaction();
				if ( ut != null ) {
					return JtaStatusHelper.isActive( ut );
				}
			}

			final JtaPlatform jtaPlatform = transactionCoordinator
					.getTransactionContext()
					.getTransactionEnvironment()
					.getJtaPlatform();
			if ( jtaPlatform == null ) {
				throw new TransactionException( "Unable to check transaction status" );
			}
			if ( jtaPlatform.retrieveTransactionManager() != null ) {
				return JtaStatusHelper.isActive( jtaPlatform.retrieveTransactionManager().getStatus() );
			}
			else {
				final UserTransaction ut = jtaPlatform.retrieveUserTransaction();
				return ut != null && JtaStatusHelper.isActive( ut );
			}
		}
		catch ( SystemException se ) {
			throw new TransactionException( "Unable to check transaction status", se );
		}
	}

}