/*
* JBoss, Home of Professional Open Source
* Copyright 2009 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.infinispan.notifications;
import java.util.Set;
/**
* Interface that denotes that the implementation can have listeners attached to it.
*
* @author Manik Surtani
* @since 4.0
*/
public interface Listenable {
/**
* Adds a listener to the component. Typically, listeners would need to be annotated with {@link Listener} and
* further to that, contain methods annotated appropriately, otherwise the listener will not be registered.
* <p/>
* See the {@link Listener} annotation for more information.
* <p/>
*
* @param listener must not be null.
*/
void addListener(Object listener);
/**
* Removes a listener from the component.
*
* @param listener listener to remove. Must not be null.
*/
void removeListener(Object listener);
/**
* @return a set of all listeners registered on this component.
*/
Set<Object> getListeners();
}