/*
 * Copyright (C) 2001-2004 Red Hat Inc. All Rights Reserved.
 *
 * This library 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 library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */
package com.arsdigita.caching;

import java.util.EventListener;

/**
 * The listener interface for receiving Cache entry removal events. The class that is
 * interested in finding out about entries that have been invalidated, or have not been 
 * retrieved because they are out of date implements this interface, and
 * registers it against a particular CacheTable or against all CacheTables using 
 * the CacheTable addEntryRemovalListener methods.
 *
 * @author Chris Gilbert
 *
 * @version $Id: ActionListener.java 285 2005-02-22 00:29:02Z sskracic $
 *
 * @see ActionEvent
 * @see java.awt.event.ActionListener
 */
public interface CacheEntryRemovalListener  {

    /**
     * Invoked when an entry has been removed.
     *
     * @pre e != null
     */
    void entryRemoved(CacheEntryRemovalEvent e);
}
