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.util;
24  
25  import java.util.Map;
26  import java.util.concurrent.ConcurrentHashMap;
27  
28  /**
29   * <a href="WebAppPool.java.html"><b><i>View Source</i></b></a>
30   *
31   * @author Brian Wing Shun Chan
32   *
33   */
34  public class WebAppPool {
35  
36      public static Object get(String webAppId, String key) {
37          return _instance._get(webAppId, key);
38      }
39  
40      public static void put(String webAppId, String key, Object obj) {
41          _instance._put(webAppId, key, obj);
42      }
43  
44      public static Object remove(String webAppId, String key) {
45          return _instance._remove(webAppId, key);
46      }
47  
48      private WebAppPool() {
49          _webAppPool = new ConcurrentHashMap<String, Map<String, Object>>();
50      }
51  
52      private Object _get(String webAppId, String key) {
53          Map<String, Object> map = _webAppPool.get(webAppId);
54  
55          if (map == null) {
56              return null;
57          }
58          else {
59              return map.get(key);
60          }
61      }
62  
63      private void _put(String webAppId, String key, Object obj) {
64          Map<String, Object> map = _webAppPool.get(webAppId);
65  
66          if (map == null) {
67              map = new ConcurrentHashMap<String, Object>();
68  
69              _webAppPool.put(webAppId, map);
70          }
71  
72          map.put(key, obj);
73      }
74  
75      private Object _remove(String webAppId, String key) {
76          Map<String, Object> map = _webAppPool.get(webAppId);
77  
78          if (map == null) {
79              return null;
80          }
81          else {
82              return map.remove(key);
83          }
84      }
85  
86      private static WebAppPool _instance = new WebAppPool();
87  
88      private Map<String, Map<String, Object>> _webAppPool;
89  
90  }