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1   package org.apache.commons.ognl.internal;
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   * $Id: ReentrantReadWriteLockClassCache.java 1194954 2011-10-29 18:00:27Z mcucchiara $
24   */
25  
26  import org.apache.commons.ognl.ClassCacheInspector;
27  import org.apache.commons.ognl.internal.entry.CacheEntryFactory;
28  
29  
30  public class ReentrantReadWriteLockClassCache<T>
31      extends HashMapCache<Class<?>, T>
32      implements ClassCache<T>
33  {
34      private ClassCacheInspector inspector;
35  
36      public ReentrantReadWriteLockClassCache( CacheEntryFactory<Class<?>, T> entryFactory )
37      {
38          super( entryFactory );
39      }
40  
41      public void setClassInspector( ClassCacheInspector inspector )
42      {
43          this.inspector = inspector;
44      }
45  
46      public T put( Class<?> key, T value )
47      {
48          if ( inspector != null && !inspector.shouldCache( key ) )
49          {
50              return value;
51          }
52          return super.put( key, value );
53      }
54  }