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Java > Open Source Codes > com > caucho > jsp > StaticJspFragmentSupport


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.jsp;
30
31 import com.caucho.log.Log;
32
33 import javax.servlet.jsp.JspContext JavaDoc;
34 import javax.servlet.jsp.JspException JavaDoc;
35 import javax.servlet.jsp.PageContext JavaDoc;
36 import javax.servlet.jsp.tagext.JspFragment JavaDoc;
37 import java.io.Writer JavaDoc;
38 import java.util.logging.Logger JavaDoc;
39
40 /**
41  * Abstract implementation for the fragment support.
42  */
43 public class StaticJspFragmentSupport extends JspFragment JavaDoc {
44   private static final Logger JavaDoc log = Log.open(StaticJspFragmentSupport.class);
45
46   private String JavaDoc _value;
47
48   private PageContext JavaDoc _pageContext;
49                      
50   public static StaticJspFragmentSupport create(StaticJspFragmentSupport frag,
51                         PageContext JavaDoc pageContext,
52                         String JavaDoc value)
53   {
54     if (frag == null)
55       frag = new StaticJspFragmentSupport();
56
57     frag._value = value;
58     frag._pageContext = pageContext;
59
60     return frag;
61   }
62
63   /**
64    * Returns the JSP context.
65    */
66   public JspContext JavaDoc getJspContext()
67   {
68     return _pageContext;
69   }
70
71   /**
72    * Returns the fragment value.
73    */
74   public String JavaDoc getValue()
75   {
76     return _value;
77   }
78
79   /**
80    * The public JspFragment interface.
81    *
82    * @param out optional location for the output
83    * @param vars optional map to replace the page context
84    */
85   public void invoke(Writer JavaDoc out)
86     throws JspException JavaDoc
87   {
88     try {
89       if (out == null)
90     _pageContext.getOut().write(_value);
91       else
92     out.write(_value);
93     } catch (RuntimeException JavaDoc e) {
94       throw e;
95     } catch (Exception JavaDoc e) {
96       throw new JspException JavaDoc(e);
97     }
98   }
99 }
100
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