1   /**
2    * Copyright (c) 2000-2007 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.servlet;
24  
25  import com.liferay.portal.util.PropsUtil;
26  import com.liferay.util.CollectionFactory;
27  
28  import java.util.Enumeration;
29  import java.util.Map;
30  
31  import javax.servlet.http.HttpServletRequest;
32  import javax.servlet.http.HttpSession;
33  
34  import org.apache.commons.logging.Log;
35  import org.apache.commons.logging.LogFactory;
36  
37  /**
38   * <a href="SharedSessionUtil.java.html"><b><i>View Source</i></b></a>
39   *
40   * @author Brian Wing Shun Chan
41   * @author Brian Myunghun Kim
42   *
43   */
44  public class SharedSessionUtil {
45  
46      public static final String[] SHARED_SESSION_ATTRIBUTES =
47          PropsUtil.getArray(PropsUtil.SESSION_SHARED_ATTRIBUTES);
48  
49      public static Map getSharedSessionAttributes(HttpServletRequest req) {
50          Map map = CollectionFactory.getSyncHashMap();
51  
52          HttpSession ses = req.getSession();
53  
54          Enumeration enu = ses.getAttributeNames();
55  
56          while (enu.hasMoreElements()) {
57              String attrName = (String)enu.nextElement();
58              Object attrValue = ses.getAttribute(attrName);
59  
60              if (attrValue != null) {
61                  for (int i = 0; i < SHARED_SESSION_ATTRIBUTES.length; i++) {
62                      if (attrName.startsWith(SHARED_SESSION_ATTRIBUTES[i])) {
63                          map.put(attrName, attrValue);
64  
65                          if (_log.isDebugEnabled()) {
66                              _log.debug("Sharing " + attrName);
67                          }
68  
69                          break;
70                      }
71                  }
72              }
73          }
74  
75          return map;
76      }
77  
78      private static Log _log = LogFactory.getLog(SharedSessionUtil.class);
79  
80  }