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    
022    public interface CacheKey {
023    
024        /**
025         * Needed for saving in HashMap:
026         */
027        @Override
028        public int hashCode();
029    
030        /**
031         * Needed for saving in HashMap:
032         */
033        @Override
034        public boolean equals(Object anObject);
035    
036        /**
037         * string representation and effectively the cache identifier
038         *
039         * @return
040         */
041        public String toString();
042    }