1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portal.kernel.cache;
21  
22  import com.liferay.portal.kernel.log.Log;
23  import com.liferay.portal.kernel.log.LogFactoryUtil;
24  
25  import java.util.Map;
26  import java.util.concurrent.ConcurrentHashMap;
27  
28  /**
29   * <a href="CacheRegistry.java.html"><b><i>View Source</i></b></a>
30   *
31   * @author Brian Wing Shun Chan
32   *
33   */
34  public class CacheRegistry {
35  
36      public static void clear() {
37          for (Map.Entry<String, CacheRegistryItem> entry : _items.entrySet()) {
38              CacheRegistryItem item = entry.getValue();
39  
40              item.invalidate();
41          }
42      }
43  
44      public static boolean isActive() {
45          return _active;
46      }
47  
48      public static void register(CacheRegistryItem item) {
49          String name = item.getRegistryName();
50  
51          if (_log.isDebugEnabled()) {
52              _log.debug("Registering " + name);
53          }
54  
55          if (_items.containsKey(name)) {
56              if (_log.isDebugEnabled()) {
57                  _log.debug("Not registering duplicate " + name);
58              }
59          }
60          else {
61              _items.put(name, item);
62          }
63      }
64  
65      public static void setActive(boolean active) {
66          _active = active;
67  
68          if (!active) {
69              clear();
70          }
71      }
72  
73      public static void unregister(String name) {
74          if (_log.isDebugEnabled()) {
75              _log.debug("Unregistering " + name);
76          }
77  
78          _items.remove(name);
79      }
80  
81      private static Log _log = LogFactoryUtil.getLog(CacheRegistry.class);
82  
83      private static boolean _active = true;
84      private static Map<String, CacheRegistryItem> _items =
85          new ConcurrentHashMap<String, CacheRegistryItem>();
86  
87  }