/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.jbpm.pvm.internal.tx;
import org.hibernate.Session;
import org.jbpm.api.JbpmException;
import org.jbpm.internal.log.Log;
import org.jbpm.pvm.internal.cmd.Command;
import org.jbpm.pvm.internal.env.Environment;
import org.jbpm.pvm.internal.spring.CommandTransactionCallback;
import org.jbpm.pvm.internal.svc.Interceptor;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionDefinition;
import org.springframework.transaction.support.DefaultTransactionDefinition;
import org.springframework.transaction.support.TransactionCallback;
import org.springframework.transaction.support.TransactionTemplate;
/**
* calls setRollbackOnly on the transaction in the environment in case an
* exception occurs during execution of the command.
*
* @author Andries Inze
*/
public class SpringTransactionInterceptor extends Interceptor {
private static final Log log = Log.getLog(SpringTransactionInterceptor.class.getName());
private boolean useCurrent;
@SuppressWarnings("unchecked")
public <T> T execute(Command<T> command) {
Environment environment = Environment.getCurrent();
if (environment == null) {
throw new JbpmException("no environment for managing hibernate transaction");
}
StandardTransaction standardTransaction = environment.get(StandardTransaction.class);
PlatformTransactionManager platformTransactionManager = environment.get(PlatformTransactionManager.class);
if (platformTransactionManager == null) {
throw new JbpmException("No platformTransaction manager defined.");
}
if (standardTransaction != null) {
standardTransaction.begin();
}
try {
DefaultTransactionDefinition definition = new DefaultTransactionDefinition();
if (useCurrent) {
definition.setPropagationBehavior(TransactionDefinition.PROPAGATION_MANDATORY);
} else {
definition.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
}
TransactionTemplate template = new TransactionTemplate(platformTransactionManager, definition);
TransactionCallback transactionCallback = new CommandTransactionCallback<T>(command, next, platformTransactionManager);
T t = (T) template.execute(transactionCallback);
Session session = environment.get(Session.class);
if (session.isOpen()) {
session.flush();
}
return t;
} catch (RuntimeException e) {
if (standardTransaction != null) {
standardTransaction.setRollbackOnly();
}
throw e;
} finally {
if (standardTransaction != null) {
standardTransaction.complete();
}
}
}
public void setUseCurrent(Boolean useCurrent) {
this.useCurrent = useCurrent;
}
}