1   /**
2    * Copyright (c) 2000-2008 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.webcache;
24  
25  import com.liferay.portal.kernel.bean.InitializingBean;
26  import com.liferay.portal.kernel.cache.PortalCache;
27  import com.liferay.portal.kernel.cache.SingleVMPool;
28  import com.liferay.portal.kernel.util.Time;
29  import com.liferay.portal.kernel.webcache.WebCacheException;
30  import com.liferay.portal.kernel.webcache.WebCacheItem;
31  import com.liferay.portal.kernel.webcache.WebCachePool;
32  
33  import org.apache.commons.logging.Log;
34  import org.apache.commons.logging.LogFactory;
35  
36  /**
37   * <a href="WebCachePoolImpl.java.html"><b><i>View Source</i></b></a>
38   *
39   * @author Brian Wing Shun Chan
40   *
41   */
42  public class WebCachePoolImpl implements InitializingBean, WebCachePool {
43  
44      public static final String CACHE_NAME = WebCachePool.class.getName();
45  
46      public void afterPropertiesSet() {
47          _cache = _singleVMPool.getCache(CACHE_NAME);
48      }
49  
50      public void clear() {
51          _cache.removeAll();
52      }
53  
54      public Object get(String key, WebCacheItem wci) {
55          Object obj = _singleVMPool.get(_cache, key);
56  
57          if (obj == null) {
58              try {
59                  obj = wci.convert(key);
60  
61                  int timeToLive = (int)(wci.getRefreshTime() / Time.SECOND);
62  
63                  _cache.put(key, obj, timeToLive);
64              }
65              catch (WebCacheException wce) {
66                  Throwable cause = wce.getCause();
67  
68                  if (cause != null) {
69                      _log.error(cause, cause);
70                  }
71                  else {
72                      _log.error(wce, wce);
73                  }
74              }
75          }
76  
77          return obj;
78      }
79  
80      public void remove(String key) {
81          _singleVMPool.remove(_cache, key);
82      }
83  
84      public void setSingleVMPool(SingleVMPool singleVMPool) {
85          _singleVMPool = singleVMPool;
86      }
87  
88      private static Log _log = LogFactory.getLog(WebCachePoolImpl.class);
89  
90      private SingleVMPool _singleVMPool;
91      private PortalCache _cache;
92  
93  }