JMSCorrelationID and JMSMessageID

Question

          I'm trying to create a producer that sends multiple PTP messages and receives multiple
          replies. It will need to correlate the requests with the replies. I'm finding
          that Weblogic JMS is not setting the JMSMessageID, which is what I'm trying to
          use for the JMSCorrelationID.
          Is there something I have to configure, or do programmitically, to have Weblogic
          JMS automatically create a unique MessageID?
          Thanks in advance.
          Producer code is like the following:
          TextMessage textmsg = session.createTextMessage();
          //printing the JMSMessageID prints NULL
          System.out.println("MESSAGE ID: " + textmsg.getJMSMessageID());
          textmsg.setJMSCorrelationID(textmsg.getJMSMessageID());
          msgProducer.send(textmsg);
          Cosumer(receives the message above) code is like the following:
          requestMsg = queueReceiver.receive();
          Queue replyQ = (Queue)requestMsg.getJMSReplyTo();
          queueSender = queueSession.createSender(replyQ);
          TextMessage replyMsg = queueSession.createTextMessage("reply");
          //printing JMSCorrelationID prints NULL
          System.out.println("JMS CORRELATION ID: " + requestMsg.getJMSCorrelationID());
          replyMsg.setJMSCorrelationID(requestMsg.getJMSCorrelationID());
          queueSender.send(replyMsg);
          

Answer 1

          "James Goodwin" <[email protected]> wrote:
          >
          >I'm trying to create a producer that sends multiple PTP messages and
          >receives multiple
          >replies. It will need to correlate the requests with the replies. I'm
          >finding
          >that Weblogic JMS is not setting the JMSMessageID, which is what I'm
          >trying to
          >use for the JMSCorrelationID.
          >
          >Is there something I have to configure, or do programmitically, to have
          >Weblogic
          >JMS automatically create a unique MessageID?
          >
          >Thanks in advance.
          >
          >Producer code is like the following:
          >
          >TextMessage textmsg = session.createTextMessage();
          >//printing the JMSMessageID prints NULL
          >System.out.println("MESSAGE ID: " + textmsg.getJMSMessageID());
          >textmsg.setJMSCorrelationID(textmsg.getJMSMessageID());
          >msgProducer.send(textmsg);
          >
          >Cosumer(receives the message above) code is like the following:
          >
          >requestMsg = queueReceiver.receive();
          >Queue replyQ = (Queue)requestMsg.getJMSReplyTo();
          >queueSender = queueSession.createSender(replyQ);
          >TextMessage replyMsg = queueSession.createTextMessage("reply");
          >//printing JMSCorrelationID prints NULL
          >System.out.println("JMS CORRELATION ID: " + requestMsg.getJMSCorrelationID());
          >replyMsg.setJMSCorrelationID(requestMsg.getJMSCorrelationID());
          >queueSender.send(replyMsg);
          >
          Once again, I've finally found the answer. The javax.jms.Message javadoc states
          that the JMSMessageID is not set until after the send method is called. So the
          producer has to capture the JMSMessageID after the send. The consumer has to use
          JMSMessageID to set the JMSCorrelationID. Then all is right with the world.
          Hope this helps somebody.