javax.slee.management
Class AlarmDuplicateFilter

java.lang.Object
  javax.slee.management.AlarmDuplicateFilter

All Implemented Interfaces:

java.io.Serializable, javax.management.NotificationFilter

public class AlarmDuplicateFilter
extends java.lang.Object
implements javax.management.NotificationFilter

A notification filter that suppresses equivalent AlarmNotifications that occur during a specified period of time. Only the first of a series of equivalent alarm notifications is allowed through this filter. When the specified period of time elapses after the first notification, the cycle restarts and a subsequent equivalent alarm notification is allowed through.

Alarm notification equivalence is tested using the AlarmNotification.equals(java.lang.Object) method.

Notifications that are not instances of AlarmNotification are suppressed by this filter.

Note: This filter implementation does not use threads to clear stale timeouts. Instead, stale timeouts are cleared on each invocation of isNotificationEnabled. Methods in this class are also thread-safe.

See Also:

Serialized Form

Constructor Summary

AlarmDuplicateFilter(long period)
Create an AlarmDuplicateFilter.

Method Summary

boolean

isNotificationEnabled(javax.management.Notification notification) Determine whether the specified notification should be delivered to notification listeners using this notification filter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AlarmDuplicateFilter

public AlarmDuplicateFilter(long period)

Create an AlarmDuplicateFilter.

Parameters:

period - the period (measured in ms) during which duplicate alarm notifications will be discarded.

Method Detail

isNotificationEnabled

public boolean isNotificationEnabled(javax.management.Notification notification)

Determine whether the specified notification should be delivered to notification listeners using this notification filter.

Specified by:

isNotificationEnabled in interface javax.management.NotificationFilter

Parameters:

notification - the notification to be sent.

Returns:

true if the notification should be delivered to notification listeners, false otherwise. This method always returns false if notification is not an instance of AlarmNotification.