001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.commons.io.cache; 020 021import java.io.Serializable; 022 023/** 024 * Ac CacheEventListener is registred to a cache implementing the interface CacheEvent, a CacheEventListener can listen to certain event happening in a cache 025 */ 026public interface CacheEventListener extends Serializable { 027 028 029 /** 030 * this method is invoked before a Cache Entry is removed from Cache 031 * @param entry entry that will be removed from Cache 032 */ 033 public void onRemove(CacheEntry entry); 034 035 /** 036 * this method is invoked before a new Entry is putted to a cache (update and insert) 037 */ 038 public void onPut(CacheEntry entry); 039 040 /** 041 * this method is invoked before a entry expires (lifetime and idletime) 042 */ 043 public void onExpires(CacheEntry entry); 044 045 046 public CacheEventListener duplicate(); 047}