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1   /*
2    *  Java HTML Tidy - JTidy
3    *  HTML parser and pretty printer
4    *
5    *  Copyright (c) 1998-2000 World Wide Web Consortium (Massachusetts
6    *  Institute of Technology, Institut National de Recherche en
7    *  Informatique et en Automatique, Keio University). All Rights
8    *  Reserved.
9    *
10   *  Contributing Author(s):
11   *
12   *     Dave Raggett <dsr@w3.org>
13   *     Andy Quick <ac.quick@sympatico.ca> (translation to Java)
14   *     Gary L Peskin <garyp@firstech.com> (Java development)
15   *     Sami Lempinen <sami@lempinen.net> (release management)
16   *     Fabrizio Giustina <fgiust at users.sourceforge.net>
17   *     Vlad Skarzhevskyy <vlads at users.sourceforge.net> (JTidy servlet  development)
18   *
19   *  The contributing author(s) would like to thank all those who
20   *  helped with testing, bug fixes, and patience.  This wouldn't
21   *  have been possible without all of you.
22   *
23   *  COPYRIGHT NOTICE:
24   *
25   *  This software and documentation is provided "as is," and
26   *  the copyright holders and contributing author(s) make no
27   *  representations or warranties, express or implied, including
28   *  but not limited to, warranties of merchantability or fitness
29   *  for any particular purpose or that the use of the software or
30   *  documentation will not infringe any third party patents,
31   *  copyrights, trademarks or other rights.
32   *
33   *  The copyright holders and contributing author(s) will not be
34   *  liable for any direct, indirect, special or consequential damages
35   *  arising out of any use of the software or documentation, even if
36   *  advised of the possibility of such damage.
37   *
38   *  Permission is hereby granted to use, copy, modify, and distribute
39   *  this source code, or portions hereof, documentation and executables,
40   *  for any purpose, without fee, subject to the following restrictions:
41   *
42   *  1. The origin of this source code must not be misrepresented.
43   *  2. Altered versions must be plainly marked as such and must
44   *     not be misrepresented as being the original source.
45   *  3. This Copyright notice may not be removed or altered from any
46   *     source or altered source distribution.
47   *
48   *  The copyright holders and contributing author(s) specifically
49   *  permit, without fee, and encourage the use of this source code
50   *  as a component for supporting the Hypertext Markup Language in
51   *  commercial products. If you use this source code in a product,
52   *  acknowledgment is not required but would be appreciated.
53   *
54   */
55  package org.w3c.tidy.servlet.data;
56  /*
57   * Created on 23.10.2004
58   */
59  import javax.servlet.http.HttpSession;
60  
61  import org.w3c.tidy.servlet.Consts;
62  import org.w3c.tidy.servlet.ResponseRecordRepository;
63  
64  /***
65   * Store Repository in http session.
66   *
67   * @author Vlad Skarzhevskyy <a href="mailto:skarzhevskyy@gmail.com">skarzhevskyy@gmail.com</a>
68   * @version $Revision: 1.2 $ ($Author: vlads $)
69   */
70  public class SessionRepositoryFactory extends DefaultRepositoryFactory
71  {
72      /***
73       * Session attribute, used to store Repository in Session.
74       */
75      public static final String ATTRIBUTE_REPOSITORY = "JTidyResponseRecordRepository";
76  
77      /* (non-Javadoc)
78       * @see org.w3c.tidy.servlet.RepositoryFactory#getRepositoryInstance(javax.servlet.http.HttpSession)
79       */
80      public ResponseRecordRepository getRepositoryInstance(HttpSession httpSession)
81      {
82          ResponseRecordRepository r = (ResponseRecordRepository) httpSession.getAttribute(ATTRIBUTE_REPOSITORY);
83          if (r == null)
84          {
85              r = new DefaultResponseRecordRepository();
86              httpSession.setAttribute(ATTRIBUTE_REPOSITORY, r);
87          }
88          return r;
89      }
90  
91      /***
92       * Implementation of sequence generator.
93       * @return Returns the requst new ID when asked.
94       */
95      public synchronized long generateNewRequestID(HttpSession httpSession)
96      {
97          Long l = (Long) httpSession.getAttribute(Consts.ATTRIBUTE_REQUEST_ID);
98          if (l == null)
99          {
100             l = new Long(0);
101         }
102         l = new Long(l.longValue() + 1);
103         httpSession.setAttribute(Consts.ATTRIBUTE_REQUEST_ID, l);
104 
105         return l.longValue();
106     }
107 }