1   /**
2    * Copyright (c) 2000-2010 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   *
12   *
13   */
14  
15  package com.liferay.portal.cache.transactional;
16  
17  import com.liferay.portal.kernel.cache.BasePortalCache;
18  import com.liferay.portal.kernel.cache.PortalCache;
19  
20  import java.io.Serializable;
21  
22  import java.util.ArrayList;
23  import java.util.Collection;
24  import java.util.List;
25  
26  /**
27   * <a href="TransactionalPortalCache.java.html"><b><i>View Source</i></b></a>
28   *
29   * @author Shuyang Zhou
30   */
31  public class TransactionalPortalCache extends BasePortalCache {
32  
33      public TransactionalPortalCache(PortalCache portalCache) {
34          _portalCache = portalCache;
35      }
36  
37      public Collection<Object> get(Collection<String> keys) {
38          List<Object> values = new ArrayList<Object>(keys.size());
39  
40          for (String key : keys) {
41              values.add(get(key));
42          }
43  
44          return values;
45      }
46  
47      public Object get(String key) {
48          Object result = null;
49  
50          if (TransactionalPortalCacheHelper.isEnabled()) {
51              result = TransactionalPortalCacheHelper.get(_portalCache, key);
52  
53              if (result == _nullHolder) {
54                  return null;
55              }
56          }
57  
58          if (result == null) {
59              result = _portalCache.get(key);
60          }
61  
62          return result;
63      }
64  
65      public void put(String key, Object obj) {
66          if (TransactionalPortalCacheHelper.isEnabled()) {
67              if (obj == null) {
68                  obj = _nullHolder;
69              }
70  
71              TransactionalPortalCacheHelper.put(_portalCache, key, obj);
72          }
73          else {
74              _portalCache.put(key, obj);
75          }
76      }
77  
78      public void put(String key, Object obj, int timeToLive) {
79          if (TransactionalPortalCacheHelper.isEnabled()) {
80              if (obj == null) {
81                  obj = _nullHolder;
82              }
83  
84              TransactionalPortalCacheHelper.put(_portalCache, key, obj);
85          }
86          else {
87              _portalCache.put(key, obj, timeToLive);
88          }
89      }
90  
91      public void put(String key, Serializable obj) {
92          if (TransactionalPortalCacheHelper.isEnabled()) {
93              if (obj == null) {
94                  obj = _nullHolder;
95              }
96  
97              TransactionalPortalCacheHelper.put(_portalCache, key, obj);
98          }
99          else {
100             _portalCache.put(key, obj);
101         }
102     }
103 
104     public void put(String key, Serializable obj, int timeToLive) {
105         if (TransactionalPortalCacheHelper.isEnabled()) {
106             if (obj == null) {
107                 obj = _nullHolder;
108             }
109 
110             TransactionalPortalCacheHelper.put(_portalCache, key, obj);
111         }
112         else {
113             _portalCache.put(key, obj, timeToLive);
114         }
115     }
116 
117     public void remove(String key) {
118         if (TransactionalPortalCacheHelper.isEnabled()) {
119             TransactionalPortalCacheHelper.remove(_portalCache, key);
120         }
121 
122         _portalCache.remove(key);
123     }
124 
125     public void removeAll() {
126         if (TransactionalPortalCacheHelper.isEnabled()) {
127             TransactionalPortalCacheHelper.removeAll(_portalCache);
128         }
129 
130         _portalCache.removeAll();
131     }
132 
133     private static Serializable _nullHolder = new String();
134 
135     private PortalCache _portalCache;
136 
137 }