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java.lang.Objectjavax.management.NotificationBroadcasterSupport
Provides an implementation of NotificationEmitter
 interface.  This can be used as the super class of an MBean that
 sends notifications.
It is not specified whether the notification dispatch model is
 synchronous or asynchronous.  That is, when a thread calls sendNotification, the NotificationListener.handleNotification method of each listener
 may be called within that thread (a synchronous model) or within
 some other thread (an asynchronous model).
Applications should not depend on notification dispatch being synchronous or being asynchronous. Thus:
sendNotification method returns, it is
 not guaranteed that every listener's handleNotification method
 has been called.  It is not guaranteed either that a listener will
 see notifications in the same order as they were generated.
 Listeners that depend on order should use the sequence number of
 notifications to determine their order (see Notification.getSequenceNumber()).
 sendNotification.
 
| Constructor Summary | |
| NotificationBroadcasterSupport() | |
| Method Summary | |
|  void | addNotificationListener(NotificationListener listener,
                        NotificationFilter filter,
                        java.lang.Object handback)Adds a listener. | 
|  MBeanNotificationInfo[] | getNotificationInfo()Returns an array indicating, for each notification this MBean may send, the name of the Java class of the notification and the notification type. | 
| protected  void | handleNotification(NotificationListener listener,
                   Notification notif,
                   java.lang.Object handback)This method is called by sendNotificationfor each listener in order to send the
 notification to that listener. | 
|  void | removeNotificationListener(NotificationListener listener)Removes a listener from this MBean. | 
|  void | removeNotificationListener(NotificationListener listener,
                           NotificationFilter filter,
                           java.lang.Object handback)Removes a listener from this MBean. | 
|  void | sendNotification(Notification notification)Sends a notification. | 
| Methods inherited from class java.lang.Object | 
| clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait | 
| Constructor Detail | 
public NotificationBroadcasterSupport()
| Method Detail | 
public void addNotificationListener(NotificationListener listener,
                                    NotificationFilter filter,
                                    java.lang.Object handback)
addNotificationListener in interface NotificationBroadcasterlistener - The listener to receive notifications.filter - The filter object. If filter is null, no filtering will be performed before handling notifications.handback - An opaque object to be sent back to the listener when a notification is emitted. This object
 cannot be used by the Notification broadcaster object. It should be resent unchanged with the notification
 to the listener.
java.lang.IllegalArgumentException - thrown if the listener is null.removeNotificationListener(javax.management.NotificationListener)
public void removeNotificationListener(NotificationListener listener)
                                throws ListenerNotFoundException
NotificationBroadcaster
removeNotificationListener in interface NotificationBroadcasterlistener - A listener that was previously added to this
 MBean.
ListenerNotFoundException - The listener is not
 registered with the MBean.NotificationBroadcaster.addNotificationListener(javax.management.NotificationListener, javax.management.NotificationFilter, java.lang.Object), 
NotificationEmitter.removeNotificationListener(javax.management.NotificationListener, javax.management.NotificationFilter, java.lang.Object)
public void removeNotificationListener(NotificationListener listener,
                                       NotificationFilter filter,
                                       java.lang.Object handback)
                                throws ListenerNotFoundException
NotificationEmitterRemoves a listener from this MBean.  The MBean must have a
 listener that exactly matches the given listener,
 filter, and handback parameters.  If
 there is more than one such listener, only one is removed.
The filter and handback parameters
 may be null if and only if they are null in a listener to be
 removed.
removeNotificationListener in interface NotificationEmitterlistener - A listener that was previously added to this
 MBean.filter - The filter that was specified when the listener
 was added.handback - The handback that was specified when the listener was
 added.
ListenerNotFoundException - The listener is not
 registered with the MBean, or it is not registered with the
 given filter and handback.public MBeanNotificationInfo[] getNotificationInfo()
NotificationBroadcasterReturns an array indicating, for each notification this MBean may send, the name of the Java class of the notification and the notification type.
It is not illegal for the MBean to send notifications not described in this array. However, some clients of the MBean server may depend on the array being complete for their correct functioning.
getNotificationInfo in interface NotificationBroadcasterpublic void sendNotification(Notification notification)
notification - The notification to send.
protected void handleNotification(NotificationListener listener,
                                  Notification notif,
                                  java.lang.Object handback)
This method is called by sendNotification for each listener in order to send the
 notification to that listener.  It can be overridden in
 subclasses to change the behavior of notification delivery,
 for instance to deliver the notification in a separate
 thread.
It is not guaranteed that this method is called by the same
 thread as the one that called sendNotification.
The default implementation of this method is equivalent to
listener.handleNotification(notif, handback);
listener - the listener to which the notification is being
 delivered.notif - the notification being delivered to the listener.handback - the handback object that was supplied when the
 listener was added.| 
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Copyright 2003 Sun Microsystems, Inc. All rights reserved.