/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file 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.jboss.resource.adapter.jms;
import javax.jms.BytesMessage;
import javax.jms.JMSException;
import javax.jms.MapMessage;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.ObjectMessage;
import javax.jms.StreamMessage;
import javax.jms.TextMessage;
import org.jboss.logging.Logger;
/**
* A wrapper for a message consumer
*
* @author <a href="mailto:adrian@jboss.com">Adrian Brock</a>
* @version $Revision: 57189 $
*/
public class JmsMessageConsumer implements MessageConsumer
{
private static final Logger log = Logger.getLogger(JmsMessageConsumer.class);
/** The wrapped message consumer */
MessageConsumer consumer;
/** The session for this consumer */
JmsSession session;
/** Whether trace is enabled */
private boolean trace = log.isTraceEnabled();
/**
* Create a new wrapper
*
* @param consumer the consumer
* @param session the session
*/
public JmsMessageConsumer(MessageConsumer consumer, JmsSession session)
{
this.consumer = consumer;
this.session = session;
if (trace)
log.trace("new JmsMessageConsumer " + this + " consumer=" + consumer + " session=" + session);
}
public void close() throws JMSException
{
if (trace)
log.trace("close " + this);
try
{
closeConsumer();
}
finally
{
session.removeConsumer(this);
}
}
public MessageListener getMessageListener() throws JMSException
{
session.checkStrict();
return consumer.getMessageListener();
}
public String getMessageSelector() throws JMSException
{
return consumer.getMessageSelector();
}
public Message receive() throws JMSException
{
if (trace)
log.trace("receive " + this);
Message message = consumer.receive();
if (trace)
log.trace("received " + this + " result=" + message);
if (message == null)
return null;
else
return wrapMessage(message);
}
public Message receive(long timeout) throws JMSException
{
if (trace)
log.trace("receive " + this + " timeout=" + timeout);
Message message = consumer.receive(timeout);
if (trace)
log.trace("received " + this + " result=" + message);
if (message == null)
return null;
else
return wrapMessage(message);
}
public Message receiveNoWait() throws JMSException
{
if (trace)
log.trace("receiveNoWait " + this);
Message message = consumer.receiveNoWait();
if (trace)
log.trace("received " + this + " result=" + message);
if (message == null)
return null;
else
return wrapMessage(message);
}
public void setMessageListener(MessageListener listener) throws JMSException
{
session.checkStrict();
if (listener == null)
consumer.setMessageListener(null);
else
consumer.setMessageListener(wrapMessageListener(listener));
}
void closeConsumer() throws JMSException
{
consumer.close();
}
Message wrapMessage(Message message)
{
if (message instanceof BytesMessage)
return new JmsBytesMessage((BytesMessage) message, session);
else if (message instanceof MapMessage)
return new JmsMapMessage((MapMessage) message, session);
else if (message instanceof ObjectMessage)
return new JmsObjectMessage((ObjectMessage) message, session);
else if (message instanceof StreamMessage)
return new JmsStreamMessage((StreamMessage) message, session);
else if (message instanceof TextMessage)
return new JmsTextMessage((TextMessage) message, session);
return new JmsMessage(message, session);
}
MessageListener wrapMessageListener(MessageListener listener)
{
return new JmsMessageListener(listener, this);
}
}
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