Examples of javax.management.NotificationBroadcasterSupport$ListenerInfo

javax.management.NotificationBroadcasterSupport

Provides an implementation of {@link javax.management.NotificationEmitter NotificationEmitter}interface. This can be used as the super class of an MBean that sends notifications.

By default, the notification dispatch model is synchronous. That is, when a thread calls sendNotification, the NotificationListener.handleNotification method of each listener is called within that thread. You can override this default by overriding handleNotification in a subclass, or by passing an Executor to the constructor.

If the method call of a filter or listener throws an {@link Exception}, then that exception does not prevent other listeners from being invoked. However, if the method call of a filter or of {@code Executor.execute} or of{@code handleNotification} (when no {@code Excecutor} is specified) throws an{@link Error}, then that {@code Error} is propagated to the caller of{@link #sendNotification sendNotification}.

Remote listeners added using the JMX Remote API (see JMXConnector) are not usually called synchronously. That is, when sendNotification returns, it is not guaranteed that any remote listeners have yet received the notification.
@since 1.5

   }


   public void testOneListenerRegisteredWithTwoBroadcasters()
      throws Exception
   {
      NotificationBroadcasterSupport broadcaster1 = new NotificationBroadcasterSupport();
      NotificationBroadcasterSupport broadcaster2 = new NotificationBroadcasterSupport();


      Listener listener = new Listener();
      broadcaster1.addNotificationListener(listener, null, null);
      broadcaster2.addNotificationListener(listener, null, null);


      createNotification(broadcaster1);
      createNotification(broadcaster2);


      compare(sent, received(listener, null));

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   }


   public void testRemoveListener()
      throws Exception
   {
      NotificationBroadcasterSupport broadcaster = new NotificationBroadcasterSupport();


      Listener listener = new Listener();
      broadcaster.addNotificationListener(listener, null, null);
      broadcaster.removeNotificationListener(listener);


      createNotification(broadcaster);


      compare(EMPTY, received(listener, null));
   }

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   }


   public void testRegisteredTwiceRemoveListener()
      throws Exception
   {
      NotificationBroadcasterSupport broadcaster = new NotificationBroadcasterSupport();


      Listener listener = new Listener();
      broadcaster.addNotificationListener(listener, null, null);
      broadcaster.addNotificationListener(listener, null, null);
      broadcaster.removeNotificationListener(listener);


      createNotification(broadcaster);


      compare(EMPTY, received(listener, null));
   }

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   }


   public void testRegisteredWithFilterRemoveListener()
      throws Exception
   {
      NotificationBroadcasterSupport broadcaster = new NotificationBroadcasterSupport();


      Listener listener = new Listener();
      NotificationFilterSupport filter = new NotificationFilterSupport();
      filter.enableType(DEFAULT_TYPE);
      broadcaster.addNotificationListener(listener, filter, null);
      broadcaster.removeNotificationListener(listener);


      createNotification(broadcaster);


      compare(EMPTY, received(listener, null));
   }

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   }


   public void testRegisteredWithHandbackRemoveListener()
      throws Exception
   {
      NotificationBroadcasterSupport broadcaster = new NotificationBroadcasterSupport();


      Listener listener = new Listener();
      Object handback = new Object();
      broadcaster.addNotificationListener(listener, null, handback);
      broadcaster.removeNotificationListener(listener);


      createNotification(broadcaster);


      compare(EMPTY, received(listener, null));
      compare(EMPTY, received(listener, handback));

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   }


   public void testRegisteredWithFilterHandbackRemoveListener()
      throws Exception
   {
      NotificationBroadcasterSupport broadcaster = new NotificationBroadcasterSupport();


      Listener listener = new Listener();
      Object handback = new Object();
      NotificationFilterSupport filter = new NotificationFilterSupport();
      filter.enableType(DEFAULT_TYPE);
      broadcaster.addNotificationListener(listener, filter, handback);
      broadcaster.removeNotificationListener(listener);


      createNotification(broadcaster);


      compare(EMPTY, received(listener, null));
      compare(EMPTY, received(listener, handback));

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   }


   public void testRegisterRemoveListenerRegister()
      throws Exception
   {
      NotificationBroadcasterSupport broadcaster = new NotificationBroadcasterSupport();


      Listener listener = new Listener();
      broadcaster.addNotificationListener(listener, null, null);
      broadcaster.removeNotificationListener(listener);
      broadcaster.addNotificationListener(listener, null, null);


      createNotification(broadcaster);


      compare(sent, received(listener, null));
   }

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   }


   public void testRemoveListenerErrors()
      throws Exception
   {
      NotificationBroadcasterSupport broadcaster = new NotificationBroadcasterSupport();


      Listener listener = new Listener();


      boolean caught = false;
      try
      {
         broadcaster.removeNotificationListener(null);
      }
      catch (ListenerNotFoundException e)
      {
         caught = true;
      }
      assertTrue("Expected ListenerNotFoundException for null listener", caught);


      caught = false;
      try
      {
         broadcaster.removeNotificationListener(listener);
      }
      catch (ListenerNotFoundException e)
      {
         caught = true;
      }
      assertTrue("Expected ListenerNotFoundException for listener never added", caught);


      caught = false;
      try
      {
         broadcaster.addNotificationListener(listener, null, null);
         broadcaster.removeNotificationListener(listener);
         broadcaster.removeNotificationListener(listener);
      }
      catch (ListenerNotFoundException e)
      {
         caught = true;
      }

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   }


   public void testRemoveTripletListenerOnly()
      throws Exception
   {
      NotificationBroadcasterSupport broadcaster = new NotificationBroadcasterSupport();


      Listener listener = new Listener();
      broadcaster.addNotificationListener(listener, null, null);
      broadcaster.removeNotificationListener(listener, null, null);


      createNotification(broadcaster);


      compare(EMPTY, received(listener, null));
   }

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   }


   public void testRemoveTripletListenerFilter()
      throws Exception
   {
      NotificationBroadcasterSupport broadcaster = new NotificationBroadcasterSupport();


      Listener listener = new Listener();
      NotificationFilterSupport filter = new NotificationFilterSupport();
      filter.enableType(DEFAULT_TYPE);
      broadcaster.addNotificationListener(listener, filter, null);
      broadcaster.removeNotificationListener(listener, filter, null);


      createNotification(broadcaster);


      compare(EMPTY, received(listener, null));
   }

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