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              if (_log.isDebugEnabled()) {
41                  _log.debug("Invalidating " + item.getRegistryName());
42              }
43  
44              item.invalidate();
45          }
46      }
47  
48      public static void clear(String name) {
49          CacheRegistryItem item = _items.get(name);
50  
51          if (item != null) {
52              if (_log.isDebugEnabled()) {
53                  _log.debug("Invalidating " + name);
54              }
55  
56              item.invalidate();
57          }
58          else {
59              _log.error("No cache registry found with name " + name);
60          }
61      }
62  
63      public static boolean isActive() {
64          return _active;
65      }
66  
67      public static void register(CacheRegistryItem item) {
68          String name = item.getRegistryName();
69  
70          if (_log.isDebugEnabled()) {
71              _log.debug("Registering " + name);
72          }
73  
74          if (_items.containsKey(name)) {
75              if (_log.isDebugEnabled()) {
76                  _log.debug("Not registering duplicate " + name);
77              }
78          }
79          else {
80              _items.put(name, item);
81          }
82      }
83  
84      public static void setActive(boolean active) {
85          _active = active;
86  
87          if (!active) {
88              clear();
89          }
90      }
91  
92      public static void unregister(String name) {
93          if (_log.isDebugEnabled()) {
94              _log.debug("Unregistering " + name);
95          }
96  
97          _items.remove(name);
98      }
99  
100     private static Log _log = LogFactoryUtil.getLog(CacheRegistry.class);
101 
102     private static boolean _active = true;
103     private static Map<String, CacheRegistryItem> _items =
104         new ConcurrentHashMap<String, CacheRegistryItem>();
105 
106 }