/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* JBoss, Home of Professional Open Source
* Copyright 2012 Red Hat Inc. and/or its affiliates and other contributors
* as indicated by the @authors tag. All rights reserved.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* 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,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
package org.hibernate.search.batchindexing.impl;
import javax.transaction.SystemException;
import org.hibernate.Session;
import org.hibernate.StatelessSession;
import org.hibernate.search.util.logging.impl.Log;
import org.hibernate.search.util.logging.impl.LoggerFactory;
/**
* Wraps the execution of a {@code Runnable} in a JTA Transaction if necessary:
* <ul>
* <li>if the existing Hibernate Core transaction strategy requires a TransactionManager</li>
* <li>if no JTA transaction is already started</li>
* </ul>
*
* Unfortunately at this time we need to have access to {@code SessionFactoryImplementor}.
*
* @author Emmanuel Bernard
*/
public class OptionallyWrapInJTATransaction extends ErrorHandledRunnable {
private static final Log log = LoggerFactory.make();
private final SessionAwareRunnable sessionAwareRunnable;
private final StatelessSessionAwareRunnable statelessSessionAwareRunnable;
private final BatchTransactionalContext batchContext;
private final boolean wrapInTransaction;
public OptionallyWrapInJTATransaction(BatchTransactionalContext batchContext, SessionAwareRunnable sessionAwareRunnable) {
super( batchContext.searchFactoryImplementor );
/*
* Unfortunately we need to access SessionFactoryImplementor to detect:
* - whether or not we need to start the JTA transaction
* - start it
*/
this.batchContext = batchContext;
this.sessionAwareRunnable = sessionAwareRunnable;
this.statelessSessionAwareRunnable = null;
this.wrapInTransaction = batchContext.wrapInTransaction();
}
public OptionallyWrapInJTATransaction(BatchTransactionalContext batchContext, StatelessSessionAwareRunnable statelessSessionAwareRunnable) {
super( batchContext.searchFactoryImplementor );
/*
* Unfortunately we need to access SessionFactoryImplementor to detect:
* - whether or not we need to start the JTA transaction
* - start it
*/
this.batchContext = batchContext;
this.sessionAwareRunnable = null;
this.statelessSessionAwareRunnable = statelessSessionAwareRunnable;
this.wrapInTransaction = batchContext.wrapInTransaction();
}
@Override
public void runWithErrorHandler() throws Exception {
if ( wrapInTransaction ) {
final Session session;
final StatelessSession statelessSession;
if ( sessionAwareRunnable != null ) {
session = batchContext.factory.openSession();
statelessSession = null;
}
else {
session = null;
statelessSession = batchContext.factory.openStatelessSession();
}
batchContext.transactionManager.begin();
if ( sessionAwareRunnable != null ) {
sessionAwareRunnable.run( session );
}
else {
statelessSessionAwareRunnable.run( statelessSession );
}
batchContext.transactionManager.commit();
if ( sessionAwareRunnable != null ) {
session.close();
}
else {
statelessSession.close();
}
}
else {
if ( sessionAwareRunnable != null ) {
sessionAwareRunnable.run( null );
}
else {
statelessSessionAwareRunnable.run( null );
}
}
}
@Override
protected void cleanUpOnError() {
if ( wrapInTransaction ) {
try {
batchContext.transactionManager.rollback();
}
catch (SystemException e) {
log.errorRollingBackTransaction( e.getMessage(), e );
}
}
}
}