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.cms.servlet;
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.portal.theme.ThemeDisplay;
31  import com.liferay.portlet.journal.service.JournalArticleLocalServiceUtil;
32  
33  import org.apache.commons.logging.Log;
34  import org.apache.commons.logging.LogFactory;
35  
36  /**
37   * <a href="CMSServletUtil.java.html"><b><i>View Source</i></b></a>
38   *
39   * @author Brian Wing Shun Chan
40   * @author Raymond Augé
41   *
42   */
43  public class CMSServletUtil {
44  
45      public static final String CACHE_NAME = CMSServletUtil.class.getName();
46  
47      public static String LANGUAGE = "_LANGUAGE_";
48  
49      public static void clearCache() {
50          _cache.removeAll();
51      }
52  
53      public static String getContent(
54          long groupId, String articleId, String languageId,
55          ThemeDisplay themeDisplay) {
56  
57          if (Validator.isNull(articleId)) {
58              return null;
59          }
60  
61          articleId = articleId.trim().toUpperCase();
62  
63          String key = _encodeKey(articleId, languageId);
64  
65          String content = (String)MultiVMPoolUtil.get(_cache, key);
66  
67          if (content == null) {
68              try {
69                  content = JournalArticleLocalServiceUtil.getArticleContent(
70                      groupId, articleId, languageId, themeDisplay);
71              }
72              catch (Exception e) {
73                  if (_log.isWarnEnabled()) {
74                      _log.warn(e.getMessage());
75                  }
76              }
77  
78              if (content != null) {
79                  MultiVMPoolUtil.put(_cache, key, content);
80              }
81          }
82  
83          return content;
84      }
85  
86      private static String _encodeKey(String articleId, String languageId) {
87          StringMaker sm = new StringMaker();
88  
89          sm.append(CACHE_NAME);
90          sm.append(StringPool.POUND);
91          sm.append(articleId);
92          sm.append(StringPool.POUND);
93          sm.append(languageId);
94  
95          return sm.toString();
96      }
97  
98      private static Log _log = LogFactory.getLog(CMSServletUtil.class);
99  
100     private static PortalCache _cache = MultiVMPoolUtil.getCache(CACHE_NAME);
101 
102 }