1   /**
2    * Copyright (c) 2000-2009 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.kernel.cache;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  
28  import java.util.Map;
29  import java.util.concurrent.ConcurrentHashMap;
30  
31  /**
32   * <a href="CacheRegistry.java.html"><b><i>View Source</i></b></a>
33   *
34   * @author Brian Wing Shun Chan
35   *
36   */
37  public class CacheRegistry {
38  
39      public static void clear() {
40          for (Map.Entry<String, CacheRegistryItem> entry : _items.entrySet()) {
41              CacheRegistryItem item = entry.getValue();
42  
43              if (_log.isDebugEnabled()) {
44                  _log.debug("Invalidating " + item.getRegistryName());
45              }
46  
47              item.invalidate();
48          }
49      }
50  
51      public static void clear(String name) {
52          CacheRegistryItem item = _items.get(name);
53  
54          if (item != null) {
55              if (_log.isDebugEnabled()) {
56                  _log.debug("Invalidating " + name);
57              }
58  
59              item.invalidate();
60          }
61          else {
62              _log.error("No cache registry found with name " + name);
63          }
64      }
65  
66      public static boolean isActive() {
67          return _active;
68      }
69  
70      public static void register(CacheRegistryItem item) {
71          String name = item.getRegistryName();
72  
73          if (_log.isDebugEnabled()) {
74              _log.debug("Registering " + name);
75          }
76  
77          if (_items.containsKey(name)) {
78              if (_log.isDebugEnabled()) {
79                  _log.debug("Not registering duplicate " + name);
80              }
81          }
82          else {
83              _items.put(name, item);
84          }
85      }
86  
87      public static void setActive(boolean active) {
88          _active = active;
89  
90          if (!active) {
91              clear();
92          }
93      }
94  
95      public static void unregister(String name) {
96          if (_log.isDebugEnabled()) {
97              _log.debug("Unregistering " + name);
98          }
99  
100         _items.remove(name);
101     }
102 
103     private static Log _log = LogFactoryUtil.getLog(CacheRegistry.class);
104 
105     private static boolean _active = true;
106     private static Map<String, CacheRegistryItem> _items =
107         new ConcurrentHashMap<String, CacheRegistryItem>();
108 
109 }