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Java > Open Source Codes > com > caucho > xsl > java > XslResultDocument


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  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.xsl.java;
30
31 import com.caucho.java.JavaWriter;
32 import com.caucho.xml.QName;
33 import com.caucho.xsl.XslParseException;
34
35 /**
36  * changes the output
37  */
38 public class XslResultDocument extends XslNode {
39   private String JavaDoc _href;
40   
41   /**
42    * Returns the tag name.
43    */
44   public String JavaDoc getTagName()
45   {
46     return "xsl:result-document";
47   }
48   
49   /**
50    * Adds an attribute.
51    */
52   public void addAttribute(QName name, String JavaDoc value)
53     throws XslParseException
54   {
55     if (name.getName().equals("href")) {
56       _href = value;
57     }
58     else
59       super.addAttribute(name, value);
60   }
61   
62   /**
63    * Adds an attribute.
64    */
65   public void endAttributes()
66     throws XslParseException
67   {
68     if (_href == null)
69       throw error(L.l("xsl:result-document requires a 'href' attribute."));
70   }
71
72   /**
73    * Generates the code for the tag
74    *
75    * @param out the output writer for the generated java.
76    */
77   public void generate(JavaWriter out)
78     throws Exception JavaDoc
79   {
80     out.println("XslWriter oldOut = out;");
81     out.println("OutputStream os = null;");
82     out.println("try {");
83     out.pushDepth();
84     out.print("os = out.openWrite(env, ");
85     generateString(out, _href, '+');
86     out.println(");");
87
88     out.println("out = out.openResultDocument(os);");
89     
90     generateChildren(out);
91     
92     out.println("out.close();");
93     out.popDepth();
94     out.println("} finally {");
95     out.println(" if (os != null)");
96     out.println(" os.close();");
97     out.println(" out = oldOut;");
98     out.println("}");
99   }
100 }
101
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