1   /**
2    * Copyright (c) 2000-2008 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();
50      }
51  
52      private Object _get(String webAppId, String key) {
53          Map<String, Object> map = (Map<String, Object>)_webAppPool.get(
54              webAppId);
55  
56          if (map == null) {
57              return null;
58          }
59          else {
60              return map.get(key);
61          }
62      }
63  
64      private void _put(String webAppId, String key, Object obj) {
65          Map<String, Object> map = (Map<String, Object>)_webAppPool.get(
66              webAppId);
67  
68          if (map == null) {
69              map = new ConcurrentHashMap<String, Object>();
70  
71              _webAppPool.put(webAppId, map);
72          }
73  
74          map.put(key, obj);
75      }
76  
77      private Object _remove(String webAppId, String key) {
78          Map<String, Object> map = (Map<String, Object>)_webAppPool.get(
79              webAppId);
80  
81          if (map == null) {
82              return null;
83          }
84          else {
85              return map.remove(key);
86          }
87      }
88  
89      private static WebAppPool _instance = new WebAppPool();
90  
91      private Map<String, Object> _webAppPool;
92  
93  }