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1   //
2   //  ========================================================================
3   //  Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
4   //  ------------------------------------------------------------------------
5   //  All rights reserved. This program and the accompanying materials
6   //  are made available under the terms of the Eclipse Public License v1.0
7   //  and Apache License v2.0 which accompanies this distribution.
8   //
9   //      The Eclipse Public License is available at
10  //      http://www.eclipse.org/legal/epl-v10.html
11  //
12  //      The Apache License v2.0 is available at
13  //      http://www.opensource.org/licenses/apache2.0.php
14  //
15  //  You may elect to redistribute this code under either of these licenses.
16  //  ========================================================================
17  //
18  
19  package org.eclipse.jetty.server.session;
20  
21  import java.io.IOException;
22  import java.io.Serializable;
23  
24  import javax.servlet.ServletException;
25  import javax.servlet.http.HttpServlet;
26  import javax.servlet.http.HttpServletRequest;
27  import javax.servlet.http.HttpServletResponse;
28  import javax.servlet.http.HttpSession;
29  
30  import org.junit.Assert;
31  
32  
33  /**
34   * WebAppObjectInSessionServlet
35   *
36   *
37   */
38  public class WebAppObjectInSessionServlet extends HttpServlet
39  {
40      @Override
41      protected void doGet(HttpServletRequest request, HttpServletResponse httpServletResponse) throws ServletException, IOException
42      {
43          try
44          {
45              String action = request.getParameter("action");
46              if ("set".equals(action))
47              {
48                  HttpSession session = request.getSession(true);
49                  session.setAttribute("staticAttribute", new TestSharedStatic());
50  
51                  Object staticAttribute = session.getAttribute("staticAttribute");
52                  Assert.assertTrue(staticAttribute instanceof TestSharedStatic);
53                  
54  //                session.setAttribute("objectAttribute", new TestSharedNonStatic());
55             
56                  // The session itself is not shareable, since the implementation class
57                  // refers to the session manager via the hidden field this$0, and
58                  // it seems there is no way to mark the hidden field as transient.
59  //                session.setAttribute("sessionAttribute", session);
60              }
61              else if ("get".equals(action))
62              {
63                  HttpSession session = request.getSession(false);
64                  Object staticAttribute = session.getAttribute("staticAttribute");
65                  System.err.println("staticAttribute="+staticAttribute);
66                  Assert.assertTrue(staticAttribute instanceof TestSharedStatic);
67                  
68  //                Object objectAttribute = session.getAttribute("objectAttribute");
69  //                Assert.assertTrue(objectAttribute instanceof TestSharedNonStatic);
70                  
71  //                Object sessionAttribute = session.getAttribute("sessionAttribute");
72  //                assertTrue(sessionAttribute instanceof HttpSession);
73              }
74          }
75          catch (Exception e)
76          {
77              // e.printStackTrace();
78              httpServletResponse.sendError(500,e.toString());
79              throw new ServletException(e);
80          }
81      }
82  
83      // Non static inner classes are not shareable, because even if this class is portable,
84      // the hidden field this$0 refers to the servlet, which is a non portable class.
85      public class TestSharedNonStatic implements Serializable
86      {
87      }
88  
89      // Static inner classes are shareable
90      public static class TestSharedStatic implements Serializable
91      {
92      }
93  }