/* * 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.slf4j.Logger;import org.slf4j.LoggerFactory;import org.hibernate.HibernateException;/** * {@link TransactionManagerLookup} strategy for WebSphere (versions 4, 5.0 and 5.1) * * @author Gavin King */public class WebSphereTransactionManagerLookup implements TransactionManagerLookup {	private static final Logger log = LoggerFactory.getLogger(WebSphereTransactionManagerLookup.class);	private final int wsVersion;	private final Class tmfClass;		/**	 * Constructs a new WebSphereTransactionManagerLookup.	 */	public WebSphereTransactionManagerLookup() {		try {			Class clazz;			int version;			try {				clazz = Class.forName( "com.ibm.ws.Transaction.TransactionManagerFactory" );				version = 5;				log.info( "WebSphere 5.1" );			}			catch ( Exception e ) {				try {					clazz = Class.forName( "com.ibm.ejs.jts.jta.TransactionManagerFactory" );					version = 5;					log.info( "WebSphere 5.0" );				} 				catch ( Exception e2 ) {					clazz = Class.forName( "com.ibm.ejs.jts.jta.JTSXA" );					version = 4;					log.info( "WebSphere 4" );				}			}			tmfClass = clazz;			wsVersion = version;		}		catch ( Exception e ) {			throw new HibernateException( "Could not obtain WebSphere TransactionManagerFactory instance", e );		}	}	/**	 * {@inheritDoc}	 */	public TransactionManager getTransactionManager(Properties props) throws HibernateException {		try {			return ( TransactionManager ) tmfClass.getMethod( "getTransactionManager", null ).invoke( null, null );		}		catch ( Exception e ) {			throw new HibernateException( "Could not obtain WebSphere TransactionManager", e );		}	}	/**	 * {@inheritDoc}	 */	public String getUserTransactionName() {		return wsVersion == 5				? "java:comp/UserTransaction"				: "jta/usertransaction";	}	/**	 * {@inheritDoc}	 */	public Object getTransactionIdentifier(Transaction transaction) {		return transaction;	}}