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1   package org.apache.velocity.util.introspection;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.    
20   */
21  
22  /**
23   * Interface to implement for listeners to the internal Introspector cache.
24   *
25   * @author <a href="mailto:henning@apache.org">Henning P. Schmiedehausen</a>
26   * @version $Id: IntrospectorCacheListener.java 476951 2006-11-19 22:22:43Z henning $
27   */
28  public interface IntrospectorCacheListener
29  {
30      /**
31       * Gets called when the Cache is cleared.
32       */
33      void triggerClear();
34  
35      /**
36       * Gets called when a ClassMap is requested from the Cache.
37       *
38       * @param c The class object to look up.
39       * @param classMap The Class map to return. Might be null.
40       */
41      void triggerGet(Class c, ClassMap classMap);
42  
43      /**
44       * Gets called when a ClassMap is put into the Cache.
45       *
46       * @param c The class object to look up.
47       * @param classMap The Class map stored in the Cache. Is never null.
48       */
49      void triggerPut(Class c, ClassMap classMap);
50  }
51  
52