001 /* 002 * Copyright 2001-2004 The Apache Software Foundation 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 package org.apache.commons.cache; 017 018 import java.io.Serializable; 019 020 /** 021 * A base {@link RetrievalListener} implementation, 022 * defining all methods as no-ops. 023 * 024 * @version $Id: BaseRetrievalListener.java 155435 2005-02-26 13:17:27Z dirkv $ 025 * @author Rodney Waldhoff 026 */ 027 public class BaseRetrievalListener implements RetrievalListener { 028 public void retrieveRequested(Serializable key) { } 029 public void retrieved(Serializable key) { } 030 public void notRetrieved(Serializable key) { } 031 }