1 Reply Latest reply on Aug 26, 2004 11:01 AM by Adrian Brock

    Durable MDB Issue Null or empty subscription

    Daniel Byte Newbie

      Hi All,

      I am having problems with have an MDB registering as a Durable Topic Subscriber.

      I am getting the following problem


      WARN [JMSContainerInvoker] JMS provider failure detected:
      javax.jms.JMSException: Null or empty subscription
      at org.jboss.mq.SpyConnection.createDurableConnectionConsumer(SpyConnection.java:112)
      at org.jboss.ejb.plugins.jms.JMSContainerInvoker.innerCreate(JMSContainerInvoker.java:586)
      at org.jboss.ejb.plugins.jms.JMSContainerInvoker.startService(JMSContainerInvoker.java:674)


      Here is the snippet of the jboss xml file
      <message-driven>
      <ejb-name>EmvolveLogBean</ejb-name>
      <destination-jndi-name>topic/testDurableTopic</destination-jndi-name>
      <mdb-user>john</mdb-user>
      <mdb-passwd>needle</mdb-passwd>
      <mdb-client-id>DurableSubscriberExample</mdb-client-id>
      <mdb-subscription-id>Tester</mdb-subscription-id>
      </message-driven>


      In my client class that publishes to the topic


      TopicConnectionFactory factory = (TopicConnectionFactory) ctx.lookup("java:/ConnectionFactory");

      Topic topic = (Topic) ctx.lookup("topic/testDurableTopic");
      TopicConnection connection = factory.createTopicConnection("john","needle");

      TopicSession session = connection.createTopicSession(true, TopicSession.AUTO_ACKNOWLEDGE);

      connection.start();
      TopicPublisher sender = session.createPublisher(topic); TextMessage message = session.createTextMessage();
      message.setText("Did u get me ");
      sender.publish(message);
      session.commit();
      session.close();
      connection.close();


      I have made sure that the roles are correct but there is one issue I have..
      In the jbossmq-state.xml the DurableSubscriptions element is empty, should I need to have some entry in here example



      DurableSubscriberExample
      Tester
      testDurableTopic


      I am using Jboss-3.2.3

      But If i add this I get problems with the AS complaining it depends on other modules.

      Any help is greatly appreicated

      danny