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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.server.store;
import java.util.ArrayList;
import java.util.EnumMap;
import java.util.List;
import java.util.Map;
import org.apache.log4j.Logger;
public class EventManager
{
private Map<Event, List<EventListener>> _listeners = new EnumMap<Event, List<EventListener>> (Event.class);
private static final Logger _LOGGER = Logger.getLogger(EventManager.class);
public synchronized void addEventListener(EventListener listener, Event... events)
{
for(Event event : events)
{
List<EventListener> list = _listeners.get(event);
if(list == null)
{
list = new ArrayList<EventListener>();
_listeners.put(event,list);
}
list.add(listener);
}
}
public synchronized void notifyEvent(Event event)
{
if (_listeners.containsKey(event))
{
if(_LOGGER.isDebugEnabled())
{
_LOGGER.debug("Received event " + event);
}
for (EventListener listener : _listeners.get(event))
{
listener.event(event);
}
}
}
}
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