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Java > Open Source Codes > com > caucho > servlets > ssi > IncludeStatement


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.servlets.ssi;
31
32 import com.caucho.vfs.Path;
33 import com.caucho.vfs.WriteStream;
34
35 import javax.servlet.RequestDispatcher JavaDoc;
36 import javax.servlet.ServletException JavaDoc;
37 import javax.servlet.http.HttpServletRequest JavaDoc;
38 import javax.servlet.http.HttpServletResponse JavaDoc;
39 import java.io.IOException JavaDoc;
40 import java.util.HashMap JavaDoc;
41
42 /**
43  * Represents a SSI include statement
44  */

45 public class IncludeStatement extends Statement{
46   private final SSIExpr _virtual;
47
48   private IncludeStatement(SSIExpr virtual)
49   {
50     _virtual = virtual;
51   }
52
53   static Statement create(HashMap JavaDoc<String JavaDoc,String JavaDoc> attr, Path path)
54   {
55     String JavaDoc virtual = attr.get("virtual");
56
57     if (virtual == null)
58       return new ErrorStatement("['virtual' is a required attribute of #include]");
59
60     return new IncludeStatement(ExprParser.parseString(virtual, path));
61   }
62   
63   /**
64    * Executes the SSI statement.
65    *
66    * @param out the output stream
67    * @param request the servlet request
68    * @param response the servlet response
69    */

70   public void apply(WriteStream out,
71             HttpServletRequest JavaDoc request,
72             HttpServletResponse JavaDoc response)
73     throws IOException JavaDoc, ServletException JavaDoc
74   {
75     out.flushBuffer();
76     
77     RequestDispatcher JavaDoc disp;
78
79     String JavaDoc path = _virtual.evalString(request, response);
80     
81     disp = request.getRequestDispatcher(path);
82
83     disp.include(request, response);
84   }
85 }
86
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