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package flex.messaging.services.messaging.adapters;
import javax.jms.JMSException;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSession;
import javax.naming.NamingException;
import flex.messaging.MessageException;
/**
* A <code>JMSConsumer</code> subclass specifically for JMS Queue receivers.
*/
public class JMSQueueConsumer extends JMSConsumer
{
//--------------------------------------------------------------------------
//
// Initialize, validate, start, and stop methods.
//
//--------------------------------------------------------------------------
/**
* Starts the <code>JMSQueueConsumer</code>.
*
* @throws NamingException The thrown naming exception.
* @throws JMSException The thrown JMS exception.
*/
public void start() throws NamingException, JMSException
{
super.start();
// Establish queue
Queue queue = null;
try
{
queue = (Queue)destination;
}
catch (ClassCastException cce)
{
// JMS queue proxy for JMS destination ''{0}'' has a destination type of ''{1}'' which is not Queue.
MessageException me = new MessageException();
me.setMessage(JMSConfigConstants.NON_QUEUE_DESTINATION, new Object[] {destinationJndiName, destination.getClass().getName()});
throw me;
}
// Create connection
try
{
QueueConnectionFactory queueFactory = (QueueConnectionFactory)connectionFactory;
if (connectionCredentials != null)
connection = queueFactory.createQueueConnection(connectionCredentials.getUsername(), connectionCredentials.getPassword());
else
connection = queueFactory.createQueueConnection();
}
catch (ClassCastException cce)
{
// JMS queue proxy for JMS destination ''{0}'' has a connection factory type of ''{1}'' which is not QueueConnectionFactory.
MessageException me = new MessageException();
me.setMessage(JMSConfigConstants.NON_QUEUE_FACTORY, new Object[] {destinationJndiName, connectionFactory.getClass().getName()});
throw me;
}
QueueConnection queueConnection = (QueueConnection)connection;
// Create queue session on the connection
session = queueConnection.createQueueSession(false, getAcknowledgeMode());
// Create receiver on the queue session
QueueSession queueSession = (QueueSession) session;
// Handle message selectors
if (selectorExpression != null)
consumer = queueSession.createReceiver(queue, selectorExpression);
else
consumer = queueSession.createReceiver(queue);
startMessageReceiver();
}
}