Examples of javax.management.AttributeChangeNotification

javax.management.AttributeChangeNotification
This is the mandated object for sending notifications of attribute changes. The MBean may also send other types of notifications. The MBean must implement the {@link javax.management.NotificationBroadcaster} interface to sendthis notification.
The following information is provided in addition to the that provided by {@link javax.management.Notification Notification}. The attribute's {@link #getAttributeName() name}, {@link #getAttributeType() type}, {@link #getOldValue() old value} and{@link #getNewValue() new value}.
The notification type is "jmx.attribute.change", defined in the static string {@link #ATTRIBUTE_CHANGE}. @see javax.management.AttributeChangeNotificationFilter @author Adrian Brock. @version $Revision: 1.3 $
Revisions:
20020710 Adrian Brock:
- Serialization

    assertSame("The 'source' property of the Notification is not being set to the ObjectName of the associated MBean.", objectName, mbean.getActualNotification().getSource());
  }


  public void testSendAttributeChangeNotification() throws Exception {
    StubSpringModelMBean mbean = new StubSpringModelMBean();
    Notification notification = new AttributeChangeNotification(mbean, 1872, System.currentTimeMillis(), "Shall we break for some tea?", "agree", "java.lang.Boolean", Boolean.FALSE, Boolean.TRUE);
    ObjectName objectName = createObjectName();


    NotificationPublisher publisher = new ModelMBeanNotificationPublisher(mbean, objectName, mbean);
    publisher.sendNotification(notification);

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    assertSame("The 'source' property of the Notification is not being set to the ObjectName of the associated MBean.", objectName, mbean.getActualNotification().getSource());
  }


  public void testSendAttributeChangeNotificationWhereSourceIsNotTheManagedResource() throws Exception {
    StubSpringModelMBean mbean = new StubSpringModelMBean();
    Notification notification = new AttributeChangeNotification(this, 1872, System.currentTimeMillis(), "Shall we break for some tea?", "agree", "java.lang.Boolean", Boolean.FALSE, Boolean.TRUE);
    ObjectName objectName = createObjectName();


    NotificationPublisher publisher = new ModelMBeanNotificationPublisher(mbean, objectName, mbean);
    publisher.sendNotification(notification);

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    NotificationListenerBean listenerBean = new NotificationListenerBean();
    listenerBean.setNotificationListener(listener);
    listenerBean.setNotificationFilter(new NotificationFilter() {
      public boolean isNotificationEnabled(Notification notification) {
        if (notification instanceof AttributeChangeNotification) {
          AttributeChangeNotification changeNotification = (AttributeChangeNotification) notification;
          return "Name".equals(changeNotification.getAttributeName());
        }
        else {
          return false;
        }
      }

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    private Map attributeHandbacks = new HashMap();


    public void handleNotification(Notification notification, Object handback) {
      if (notification instanceof AttributeChangeNotification) {
        AttributeChangeNotification attNotification = (AttributeChangeNotification) notification;
        String attributeName = attNotification.getAttributeName();


        Integer currentCount = (Integer) this.attributeCounts.get(attributeName);


        if (currentCount != null) {
          int count = currentCount.intValue() + 1;

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        assertEquals(9, resolvedData.getBundleId());
        assertEquals("file:/location", resolvedData.getLocation());
        assertEquals(BundleEvent.RESOLVED, resolvedData.getEventType());


        assertEquals(1, attributeChanges.size());
        AttributeChangeNotification ac = attributeChanges.get(0);
        assertEquals("BundleIds", ac.getAttributeName());
        assertEquals(0, ((long [])ac.getOldValue()).length);
        assertEquals(1, ((long [])ac.getNewValue()).length);
        assertEquals(9L, ((long [])ac.getNewValue())[0]);
    }

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                            final Notification notification = new Notification(EVENT, OBJECTNAME,
                                    notificationSequenceNumber.getAndIncrement());
                            notification.setUserData(new BundleEventData(event).toCompositeData());


                            // also send notifications to the bundleIDs attribute listeners, if a bundle was added or removed
                            final AttributeChangeNotification attributeChangeNotification =
                                    getAttributeChangeNotification(event);


                            eventDispatcher.submit(new Runnable() {
                                public void run() {
                                    sendNotification(notification);

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            long[] newIDs = new long[newList.size()];
            for (int i = 0; i < newIDs.length; i++) {
                newIDs[i] = newList.get(i);
            }


            return new AttributeChangeNotification(OBJECTNAME, attributeChangeNotificationSequenceNumber.getAndIncrement(),
                    System.currentTimeMillis(), "BundleIds changed", "BundleIds", "Array of long", oldIDs, newIDs);
        default:
            return null;
        }
    }

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                            final Notification notification = new Notification(EVENT, OBJECTNAME,
                                    notificationSequenceNumber.getAndIncrement());
                            notification.setUserData(new ServiceEventData(serviceevent).toCompositeData());


                            // also send notifications to the serviceIDs attribute listeners, if a service was added or removed
                            final AttributeChangeNotification attributeChangeNotification =
                                    getAttributeChangeNotification(serviceevent);


                            eventDispatcher.submit(new Runnable() {
                                public void run() {
                                    sendNotification(notification);

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            long[] newIDs = new long[newList.size()];
            for (int i = 0; i < newIDs.length; i++) {
                newIDs[i] = newList.get(i);
            }


            return new AttributeChangeNotification(OBJECTNAME, attributeChangeNotificationSequenceNumber.getAndIncrement(),
                    System.currentTimeMillis(), "ServiceIds changed", "ServiceIds", "Array of long", oldIDs, newIDs);
        default:
            return null;
        }
    }

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        assertEquals("bundle", data.get(BUNDLE_SYMBOLIC_NAME));
        assertArrayEquals(new String[] {"org.apache.aries.jmx.Mock" }, (String[]) data.get(OBJECT_CLASS));
        assertEquals(ServiceEvent.MODIFIED, data.get(EVENT));


        assertEquals(1, attributeChanges.size());
        AttributeChangeNotification ac = attributeChanges.get(0);
        assertEquals("ServiceIds", ac.getAttributeName());
        assertEquals(0, ((long [])ac.getOldValue()).length);
        assertEquals(1, ((long [])ac.getNewValue()).length);
        assertEquals(44L, ((long [])ac.getNewValue())[0]);
    }

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