001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.request.resource.caching;
018
019import org.apache.wicket.request.resource.AbstractResource;
020
021/**
022 * resource caching strategy that does nothing at all
023 * <p/>
024 * when using this strategy caching of resources will effectively be disabled
025 * 
026 * @author Peter Ertl
027 * 
028 * @since 1.5
029 */
030public class NoOpResourceCachingStrategy implements IResourceCachingStrategy
031{
032        /**
033         * Global instance of {@link NoOpResourceCachingStrategy} strategy
034         */
035        public static final IResourceCachingStrategy INSTANCE = new NoOpResourceCachingStrategy();
036
037        @Override
038        public void decorateUrl(ResourceUrl url, IStaticCacheableResource resource)
039        {
040        }
041
042        @Override
043        public void undecorateUrl(ResourceUrl url)
044        {
045        }
046
047        @Override
048        public void decorateResponse(AbstractResource.ResourceResponse response, IStaticCacheableResource resource)
049        {
050        }
051
052        @Override
053        public void clearCache()
054        {
055        }
056
057}