[jboss-user] [JBoss Messaging] - Configuring Destinations in MDB's

[nkhadakk]

JBoss Messaging 1.3/ JBoss AS (4.2.1)

We have an incoming message Queue and a pool of MDB's listening. The MDB's process the data and have to post results onto another Queue. This is the code for the posting to the reply Queue:


  | @Resource(mappedName = "java:/JmsXA")
  | private static QueueConnectionFactory  factory;
  | 
  | @Resource(mappedName = "/queue/ResolvedUniversalResourceQueue")
  | private static Queue                   destinationReply;
  | 
  | public void onMessage( Message msg)
  |  {
  |     // Process incoming msg and get it ready to be sent outward
  |     //
  |     //
  |      qConnection = factory.createQueueConnection();
  |      QueueSession qSession = qConnection.createQueueSession( false, Session.DUPS_OK_ACKNOWLEDGE);
  |      QueueSender qSender = qSession.createSender( destinationReply);
  |      qSender.send( qSession.createObjectMessage( urimsg));
  |      qSender.close();
  | }
  | 

 a. Is it ok to create new QueueConnections every time ? Especially since i use the java:/JMSXA connection factory ?
b. Is it ok to create Sessions and QueueSender every single invoke ?

  Is there any best practice for pooling/sharing Sessions and QueueSender ?

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