001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.cache.key;
016    
017    import com.liferay.portal.kernel.cache.key.CacheKeyGenerator;
018    import com.liferay.portal.kernel.util.StringBundler;
019    
020    /**
021     * @author Shuyang Zhou
022     */
023    public abstract class BaseCacheKeyGenerator implements CacheKeyGenerator {
024    
025            public CacheKeyGenerator append(String key) {
026                    keyBundler.append(key);
027    
028                    return this;
029            }
030    
031            public CacheKeyGenerator append(String[] keys) {
032                    keyBundler.append(keys);
033    
034                    return this;
035            }
036    
037            public CacheKeyGenerator append(StringBundler sb) {
038                    keyBundler.append(sb);
039    
040                    return this;
041            }
042    
043            public abstract CacheKeyGenerator clone();
044    
045            public String finish() {
046                    String cacheKey = getCacheKey(keyBundler);
047    
048                    keyBundler.setIndex(0);
049    
050                    return cacheKey;
051            }
052    
053            protected StringBundler keyBundler = new StringBundler();
054    
055    }