001    package org.apache.commons.ognl.internal;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information       
007     * regarding copyright ownership.  The ASF licenses this file  
008     * to you under the Apache License, Version 2.0 (the           
009     * "License"); you may not use this file except in compliance  
010     * with the License.  You may obtain a copy of the License at  
011     *                                                             
012     *   http://www.apache.org/licenses/LICENSE-2.0                
013     *                                                             
014     * Unless required by applicable law or agreed to in writing,  
015     * software distributed under the License is distributed on an 
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY      
017     * KIND, either express or implied.  See the License for the   
018     * specific language governing permissions and limitations     
019     * under the License.
020     */
021    
022    /*
023     * $Id: ReentrantReadWriteLockClassCache.java 1194954 2011-10-29 18:00:27Z mcucchiara $
024     */
025    
026    import org.apache.commons.ognl.ClassCacheInspector;
027    import org.apache.commons.ognl.internal.entry.CacheEntryFactory;
028    
029    
030    public class ReentrantReadWriteLockClassCache<T>
031        extends HashMapCache<Class<?>, T>
032        implements ClassCache<T>
033    {
034        private ClassCacheInspector inspector;
035    
036        public ReentrantReadWriteLockClassCache( CacheEntryFactory<Class<?>, T> entryFactory )
037        {
038            super( entryFactory );
039        }
040    
041        public void setClassInspector( ClassCacheInspector inspector )
042        {
043            this.inspector = inspector;
044        }
045    
046        public T put( Class<?> key, T value )
047        {
048            if ( inspector != null && !inspector.shouldCache( key ) )
049            {
050                return value;
051            }
052            return super.put( key, value );
053        }
054    }