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              item.invalidate();
44          }
45      }
46  
47      public static boolean isActive() {
48          return _active;
49      }
50  
51      public static void register(CacheRegistryItem item) {
52          String name = item.getRegistryName();
53  
54          if (_log.isDebugEnabled()) {
55              _log.debug("Registering " + name);
56          }
57  
58          if (_items.containsKey(name)) {
59              if (_log.isDebugEnabled()) {
60                  _log.debug("Not registering duplicate " + name);
61              }
62          }
63          else {
64              _items.put(name, item);
65          }
66      }
67  
68      public static void setActive(boolean active) {
69          _active = active;
70  
71          if (!active) {
72              clear();
73          }
74      }
75  
76      public static void unregister(String name) {
77          if (_log.isDebugEnabled()) {
78              _log.debug("Unregistering " + name);
79          }
80  
81          _items.remove(name);
82      }
83  
84      private static Log _log = LogFactoryUtil.getLog(CacheRegistry.class);
85  
86      private static boolean _active = true;
87      private static Map<String, CacheRegistryItem> _items =
88          new ConcurrentHashMap<String, CacheRegistryItem>();
89  
90  }