/*
* $Id: JmsClientAcknowledgeTransaction.java 20321 2010-11-24 15:21:24Z dfeist $
* --------------------------------------------------------------------------------------
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
*
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.transport.jms;
import org.mule.api.MuleContext;
import org.mule.api.transaction.TransactionException;
import org.mule.config.i18n.CoreMessages;
import org.mule.transaction.AbstractSingleResourceTransaction;
import org.mule.transaction.IllegalTransactionStateException;
import org.mule.transport.jms.i18n.JmsMessages;
import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;
/**
* <code>JmsClientAcknowledgeTransaction</code> is a transaction implementation of
* performing a message acknowledgement. There is no notion of rollback with client
* acknowledgement, but this transaction can be useful for controlling how messages
* are consumed from a destination.
*/
public class JmsClientAcknowledgeTransaction extends AbstractSingleResourceTransaction
{
private volatile Message message;
public JmsClientAcknowledgeTransaction(MuleContext muleContext)
{
super(muleContext);
}
public void setMessage(Message message)
{
this.message = message;
}
@Override
protected void doBegin() throws TransactionException
{
// nothing to do
}
@Override
protected void doCommit() throws TransactionException
{
try
{
if (message == null)
{
throw new IllegalTransactionStateException(
JmsMessages.noMessageBoundForAck());
}
message.acknowledge();
}
catch (JMSException e)
{
throw new IllegalTransactionStateException(CoreMessages.transactionCommitFailed(), e);
}
}
@Override
protected void doRollback() throws TransactionException
{
// If a message has been bound, rollback is forbidden
if (message != null)
{
throw new UnsupportedOperationException("Jms Client Acknowledge doesn't support rollback");
}
}
@Override
public void bindResource(Object key, Object resource) throws TransactionException
{
if (key instanceof Message)
{
this.message = (Message)key;
return;
}
if (!(key instanceof Connection) || !(resource instanceof Session))
{
throw new IllegalTransactionStateException(
CoreMessages.transactionCanOnlyBindToResources("javax.jms.Connection/javax.jms.Session"));
}
Session session = (Session)resource;
try
{
if (session.getTransacted())
{
throw new IllegalTransactionStateException(JmsMessages.sessionShouldNotBeTransacted());
}
}
catch (JMSException e)
{
throw new IllegalTransactionStateException(CoreMessages.transactionCannotReadState(), e);
}
super.bindResource(key, resource);
}
}