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1   /*
2    * Copyright 2001-2004 The Apache Software Foundation
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.apache.commons.cache;
17  
18  import java.io.Serializable;
19  
20  /**
21   * A base {@link RetrievalListener} implementation,
22   * defining all methods as no-ops.
23   *
24   * @version $Id: BaseRetrievalListener.java 155435 2005-02-26 13:17:27Z dirkv $
25   * @author Rodney Waldhoff
26   */
27  public class BaseRetrievalListener implements RetrievalListener {
28    public void retrieveRequested(Serializable key) { }
29    public void retrieved(Serializable key) { }
30    public void notRetrieved(Serializable key) { }
31  }