1   /**
2    * Copyright (c) 2000-2007 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.servlet.filters.layoutcache;
24  
25  import com.liferay.portal.kernel.cache.MultiVMPoolUtil;
26  import com.liferay.portal.kernel.cache.PortalCache;
27  import com.liferay.portal.kernel.util.StringMaker;
28  import com.liferay.portal.kernel.util.StringPool;
29  import com.liferay.portal.kernel.util.Validator;
30  import com.liferay.util.CollectionFactory;
31  import com.liferay.util.servlet.filters.CacheResponseData;
32  
33  import java.util.Map;
34  
35  import org.apache.commons.logging.Log;
36  import org.apache.commons.logging.LogFactory;
37  
38  /**
39   * <a href="LayoutCacheUtil.java.html"><b><i>View Source</i></b></a>
40   *
41   * @author Alexander Chow
42   * @author Michael Young
43   *
44   */
45  public class LayoutCacheUtil {
46  
47      public static String CACHE_NAME = LayoutCacheUtil.class.getName();
48  
49      public static void clearCache() {
50          MultiVMPoolUtil.clear(CACHE_NAME);
51      }
52  
53      public static void clearCache(long companyId) {
54          String groupKey = _encodeGroupKey(companyId);
55  
56          MultiVMPoolUtil.clearGroup(_groups, groupKey, _cache);
57  
58          if (_log.isInfoEnabled()) {
59              _log.info("Cleared layout cache for " + companyId);
60          }
61      }
62  
63      public static CacheResponseData getCacheResponseData(
64          long companyId, String key) {
65  
66          if (Validator.isNull(key)) {
67              return null;
68          }
69  
70          key = _encodeKey(companyId, key);
71  
72          CacheResponseData data =
73              (CacheResponseData)MultiVMPoolUtil.get(_cache, key);
74  
75          return data;
76      }
77  
78      public static void putCacheResponseData(
79          long companyId, String key, CacheResponseData data) {
80  
81          if (data != null) {
82              key = _encodeKey(companyId, key);
83  
84              String groupKey = _encodeGroupKey(companyId);
85  
86              MultiVMPoolUtil.put(_cache, key, _groups, groupKey, data);
87          }
88      }
89  
90      private static String _encodeGroupKey(long companyId) {
91          StringMaker sm = new StringMaker();
92  
93          sm.append(CACHE_NAME);
94          sm.append(StringPool.POUND);
95          sm.append(companyId);
96  
97          return sm.toString();
98      }
99  
100     private static String _encodeKey(long companyId, String key) {
101         StringMaker sm = new StringMaker();
102 
103         sm.append(CACHE_NAME);
104         sm.append(StringPool.POUND);
105         sm.append(companyId);
106         sm.append(StringPool.POUND);
107         sm.append(key);
108 
109         return sm.toString();
110     }
111 
112     private static Log _log = LogFactory.getLog(LayoutCacheUtil.class);
113 
114     private static PortalCache _cache = MultiVMPoolUtil.getCache(CACHE_NAME);
115 
116     private static Map _groups = CollectionFactory.getSyncHashMap();
117 
118 }