/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
 *
 * 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.transaction;

import java.util.Properties;

import javax.transaction.TransactionManager;
import javax.transaction.Transaction;

import org.hibernate.HibernateException;

/**
 * TransactionManager lookup strategy for BTM
 *
 * @author Ludovic Orban
 */
public class BTMTransactionManagerLookup implements TransactionManagerLookup {

	/**
	 * {@inheritDoc}
	 */
	public TransactionManager getTransactionManager(Properties props) throws HibernateException {
		try {
			Class clazz = Class.forName("bitronix.tm.TransactionManagerServices");
			return (TransactionManager) clazz.getMethod("getTransactionManager", null).invoke(null, null);
		}
		catch (Exception e) {
			throw new HibernateException( "Could not obtain BTM transaction manager instance", e );
		}
	}

	/**
	 * {@inheritDoc}
	 */
	public String getUserTransactionName() {
		return "java:comp/UserTransaction";
	}

	/**
	 * {@inheritDoc}
	 */
	public Object getTransactionIdentifier(Transaction transaction) {
		return transaction;
	}
}