/**
* $RCSfile: ,v $
* $Revision: $
* $Date: $
*
* Copyright (C) 2004-2011 Jive Software. All rights reserved.
*
* Licensed 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.jivesoftware.spark;
import org.jivesoftware.spark.plugin.MetadataListener;
import org.jivesoftware.spark.ui.ChatRoom;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* Allows a mechanism to associated data with chat rooms.
*/
public class DataManager {
private List<MetadataListener> metadataListeners = new ArrayList<MetadataListener>();
private static DataManager singleton;
private static final Object LOCK = new Object();
/**
* Returns the singleton instance of <CODE>DataManager</CODE>,
* creating it if necessary.
* <p/>
*
* @return the singleton instance of <Code>DataManager</CODE>
*/
public static DataManager getInstance() {
// Synchronize on LOCK to ensure that we don't end up creating
// two singletons.
synchronized (LOCK) {
if (null == singleton) {
DataManager controller = new DataManager();
singleton = controller;
return controller;
}
}
return singleton;
}
/**
* Create a new instance of DataManager.
*/
private DataManager() {
}
// Allows for more associated data to individual chat rooms.
public void addMetadataListener(MetadataListener listener) {
metadataListeners.add(listener);
}
public void removeMetadataListener(MetadataListener listener) {
metadataListeners.remove(listener);
}
public void setMetadataForRoom(ChatRoom room, Map<?, ?> map) {
for (MetadataListener listener : metadataListeners) {
listener.metadataAssociatedWithRoom(room, map);
}
}
}