001    /**
002     * Copyright (C) 2009-2011 the original author or authors.
003     * See the notice.md file distributed with this work for additional
004     * information regarding copyright ownership.
005     *
006     * Licensed under the Apache License, Version 2.0 (the "License");
007     * you may not use this file except in compliance with the License.
008     * You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    
019    package org.fusesource.restygwt.client.cache;
020    
021    import java.util.List;
022    
023    import com.google.gwt.http.client.RequestCallback;
024    import com.google.gwt.http.client.Response;
025    
026    /**
027     * more enhanced cache interface caching Response objects.
028     * TODO write something
029     *
030     * @author abalke
031     */
032    public interface QueueableCacheStorage extends CacheStorage<Response> {
033    
034        public static final String RESTY_CACHE_HEADER = "X-Resty-Cache";
035    
036        public boolean hasCallback(final CacheKey k);
037    
038        public void addCallback(final CacheKey k, final RequestCallback rc);
039    
040        public List<RequestCallback> removeCallbacks(final CacheKey k);
041    }