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28.5.3. JMS Messages Notifications


HornetQ notifications can also be received using JMS messages.
It is similar to receiving notifications using Core API but an important difference is that JMS requires a JMS Destination to receive the messages (preferably a topic).
You must change the server's management notification address to start with jms.queue (if it is a JMS queue) or jms.topic (if it is a JMS topic) to use a JMS Destination to receive management notifications.
<!-- notifications will be consumed from "notificationsTopic" JMS Topic -->
<management-notification-address>jms.topic.notificationsTopic</management-notification-address>
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Once the notification topic is created, you can receive messages from it or set a MessageListener:
   Topic notificationsTopic = HornetQJMSClient.createTopic("notificationsTopic");

   Session session = ...
   MessageConsumer notificationConsumer = session.createConsumer(notificationsTopic);
      notificationConsumer.setMessageListener(new MessageListener()
      {
         public void onMessage(Message notif)
         {
            System.out.println("------------------------");
            System.out.println("Received notification:");
            try
            {
               Enumeration propertyNames = notif.getPropertyNames();
               while (propertyNames.hasMoreElements())
               {
                  String propertyName = (String)propertyNames.nextElement();
                  System.out.format("  %s: %s\n", propertyName, notif.getObjectProperty(propertyName));
               }
            }
            catch (JMSException e)
            {
            }
            System.out.println("------------------------");
         }            
      });
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