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1   // ========================================================================
2   // Copyright 2004-2010 Mort Bay Consulting Pty. Ltd.
3   // ------------------------------------------------------------------------
4   // All rights reserved. This program and the accompanying materials
5   // are made available under the terms of the Eclipse Public License v1.0
6   // and Apache License v2.0 which accompanies this distribution.
7   // The Eclipse Public License is available at
8   // http://www.eclipse.org/legal/epl-v10.html
9   // The Apache License v2.0 is available at
10  // http://www.opensource.org/licenses/apache2.0.php
11  // You may elect to redistribute this code under either of these licenses.
12  // ========================================================================
13  
14  package org.eclipse.jetty.server.session;
15  
16  import java.io.IOException;
17  import java.io.Serializable;
18  
19  import javax.servlet.ServletException;
20  import javax.servlet.http.HttpServlet;
21  import javax.servlet.http.HttpServletRequest;
22  import javax.servlet.http.HttpServletResponse;
23  import javax.servlet.http.HttpSession;
24  
25  import org.junit.Assert;
26  
27  
28  /**
29   * WebAppObjectInSessionServlet
30   *
31   *
32   */
33  public class WebAppObjectInSessionServlet extends HttpServlet
34  {
35      @Override
36      protected void doGet(HttpServletRequest request, HttpServletResponse httpServletResponse) throws ServletException, IOException
37      {
38          try
39          {
40              String action = request.getParameter("action");
41              if ("set".equals(action))
42              {
43                  HttpSession session = request.getSession(true);
44                  session.setAttribute("staticAttribute", new TestSharedStatic());
45  
46                  Object staticAttribute = session.getAttribute("staticAttribute");
47                  Assert.assertTrue(staticAttribute instanceof TestSharedStatic);
48                  
49  //                session.setAttribute("objectAttribute", new TestSharedNonStatic());
50             
51                  // The session itself is not shareable, since the implementation class
52                  // refers to the session manager via the hidden field this$0, and
53                  // it seems there is no way to mark the hidden field as transient.
54  //                session.setAttribute("sessionAttribute", session);
55              }
56              else if ("get".equals(action))
57              {
58                  HttpSession session = request.getSession(false);
59                  Object staticAttribute = session.getAttribute("staticAttribute");
60                  System.err.println("staticAttribute="+staticAttribute);
61                  Assert.assertTrue(staticAttribute instanceof TestSharedStatic);
62                  
63  //                Object objectAttribute = session.getAttribute("objectAttribute");
64  //                Assert.assertTrue(objectAttribute instanceof TestSharedNonStatic);
65                  
66  //                Object sessionAttribute = session.getAttribute("sessionAttribute");
67  //                assertTrue(sessionAttribute instanceof HttpSession);
68              }
69          }
70          catch (Exception e)
71          {
72              // e.printStackTrace();
73              httpServletResponse.sendError(500,e.toString());
74              throw new ServletException(e);
75          }
76      }
77  
78      // Non static inner classes are not shareable, because even if this class is portable,
79      // the hidden field this$0 refers to the servlet, which is a non portable class.
80      public class TestSharedNonStatic implements Serializable
81      {
82      }
83  
84      // Static inner classes are shareable
85      public static class TestSharedStatic implements Serializable
86      {
87      }
88  }