ErrorFilterChain


1   /*
2    * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3    *
4    * This file is part of Resin(R) Open Source
5    *
6    * Each copy or derived work must preserve the copyright notice and this
7    * notice unmodified.
8    *
9    * Resin Open Source is free software; you can redistribute it and/or modify
10   * it under the terms of the GNU General Public License as published by
11   * the Free Software Foundation; either version 2 of the License, or
12   * (at your option) any later version.
13   *
14   * Resin Open Source is distributed in the hope that it will be useful,
15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17   * of NON-INFRINGEMENT.  See the GNU General Public License for more
18   * details.
19   *
20   * You should have received a copy of the GNU General Public License
21   * along with Resin Open Source; if not, write to the
22   *
23   *   Free Software Foundation, Inc.
24   *   59 Temple Place, Suite 330
25   *   Boston, MA 02111-1307  USA
26   *
27   * @author Scott Ferguson
28   */
29  
30  package com.caucho.server.dispatch;
31  
32  import javax.servlet.FilterChain  ;
33  import javax.servlet.ServletException  ;
34  import javax.servlet.ServletRequest  ;
35  import javax.servlet.ServletResponse  ;
36  import javax.servlet.http.HttpServletResponse  ;
37  import java.io.IOException  ;
38  
39  /**
40   * Responds with an error code.
41   */
42  public class ErrorFilterChain implements FilterChain   {
43    // servlet
44    private int _errorCode;
45  
46    /**
47     * Create the redirect filter chain servlet.
48     *
49     * @param url the URL to redirect to.
50     */
51    public ErrorFilterChain(int errorCode)
52    {
53      _errorCode = errorCode;
54    }
55  
56    /**
57     * Invokes the final servlet at the end of the chain.
58     *
59     * @param request the servlet request
60     * @param response the servlet response
61     *
62     * @since Servlet 2.3
63     */
64    public void doFilter(ServletRequest   request,
65                         ServletResponse   response)
66      throws ServletException  , IOException  
67    {
68      HttpServletResponse   res = (HttpServletResponse  ) response;
69  
70      res.sendError(_errorCode);
71    }
72  
73    public String   toString()
74    {
75      return "ErrorFilterChain[" + _errorCode + "]";
76    }
77  }
78
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