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//
// ========================================================================
// Copyright (c) 1995-2012 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.monitor.jmx;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
/* ------------------------------------------------------------ */
/**
* NotifierGroup
*
* This class allows for grouping of the event notifiers
*/
public class NotifierGroup implements EventNotifier
{
private Set<EventNotifier> _group;
/* ------------------------------------------------------------ */
/**
* Create a notifier group
*/
public NotifierGroup()
{
_group = new HashSet<EventNotifier>();
}
/* ------------------------------------------------------------ */
/**
* Retrieve all event notifier associated with this group
*
* @return collection of event notifiers
*/
public Collection<EventNotifier> getNotifiers()
{
return Collections.unmodifiableSet(_group);
}
/* ------------------------------------------------------------ */
/**
* Add specified event notifier to event notifier group
*
* @param notifier event notifier to be added
* @return true if successful
*/
public boolean addNotifier(EventNotifier notifier)
{
return _group.add(notifier);
}
/* ------------------------------------------------------------ */
/**
* Add a collection of event notifiers to event notifier group
*
* @param notifiers collection of event notifiers to be added
* @return true if successful
*/
public boolean addNotifiers(Collection<EventNotifier> notifiers)
{
return _group.addAll(notifiers);
}
/* ------------------------------------------------------------ */
/**
* Remove event notifier from event notifier group
*
* @param notifier event notifier to be removed
* @return true if successful
*/
public boolean removeNotifier(EventNotifier notifier)
{
return _group.remove(notifier);
}
/* ------------------------------------------------------------ */
/**
* Remove a collection of event notifiers from event notifier group
*
* @param notifiers collection of event notifiers to be removed
* @return true if successful
*/
public boolean removeNotifiers(Collection<EventNotifier> notifiers)
{
return _group.removeAll(notifiers);
}
/* ------------------------------------------------------------ */
/**
* Invoke the notify() method of each of the notifiers in group
*
* @see org.eclipse.jetty.monitor.jmx.EventNotifier#notify(org.eclipse.jetty.monitor.jmx.EventTrigger, org.eclipse.jetty.monitor.jmx.EventState, long)
*/
public void notify(EventTrigger trigger, EventState<?> state, long timestamp)
{
for (EventNotifier notifier: _group)
{
notifier.notify(trigger, state, timestamp);
}
}
}
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