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.util;
21  
22  import java.util.Map;
23  import java.util.concurrent.ConcurrentHashMap;
24  
25  /**
26   * <a href="WebAppPool.java.html"><b><i>View Source</i></b></a>
27   *
28   * @author Brian Wing Shun Chan
29   *
30   */
31  public class WebAppPool {
32  
33      public static Object get(String webAppId, String key) {
34          return _instance._get(webAppId, key);
35      }
36  
37      public static void put(String webAppId, String key, Object obj) {
38          _instance._put(webAppId, key, obj);
39      }
40  
41      public static Object remove(String webAppId, String key) {
42          return _instance._remove(webAppId, key);
43      }
44  
45      private WebAppPool() {
46          _webAppPool = new ConcurrentHashMap<String, Map<String, Object>>();
47      }
48  
49      private Object _get(String webAppId, String key) {
50          Map<String, Object> map = _webAppPool.get(webAppId);
51  
52          if (map == null) {
53              return null;
54          }
55          else {
56              return map.get(key);
57          }
58      }
59  
60      private void _put(String webAppId, String key, Object obj) {
61          Map<String, Object> map = _webAppPool.get(webAppId);
62  
63          if (map == null) {
64              map = new ConcurrentHashMap<String, Object>();
65  
66              _webAppPool.put(webAppId, map);
67          }
68  
69          map.put(key, obj);
70      }
71  
72      private Object _remove(String webAppId, String key) {
73          Map<String, Object> map = _webAppPool.get(webAppId);
74  
75          if (map == null) {
76              return null;
77          }
78          else {
79              return map.remove(key);
80          }
81      }
82  
83      private static WebAppPool _instance = new WebAppPool();
84  
85      private Map<String, Map<String, Object>> _webAppPool;
86  
87  }