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Java > Open Source Codes > freemarker > ext > jsp > JspContextModel


1 /*
2  * Copyright (c) 2003 The Visigoth Software Society. All rights
3  * reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * 2. Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in
14  * the documentation and/or other materials provided with the
15  * distribution.
16  *
17  * 3. The end-user documentation included with the redistribution, if
18  * any, must include the following acknowledgement:
19  * "This product includes software developed by the
20  * Visigoth Software Society (http://www.visigoths.org/)."
21  * Alternately, this acknowledgement may appear in the software itself,
22  * if and wherever such third-party acknowledgements normally appear.
23  *
24  * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the
25  * project contributors may be used to endorse or promote products derived
26  * from this software without prior written permission. For written
27  * permission, please contact visigoths@visigoths.org.
28  *
29  * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
30  * nor may "FreeMarker" or "Visigoth" appear in their names
31  * without prior written permission of the Visigoth Software Society.
32  *
33  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
34  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
35  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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39  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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43  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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45  * ====================================================================
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47  * This software consists of voluntary contributions made by many
48  * individuals on behalf of the Visigoth Software Society. For more
49  * information on the Visigoth Software Society, please see
50  * http://www.visigoths.org/
51  */
52
53 package freemarker.ext.jsp;
54
55 import javax.servlet.jsp.PageContext JavaDoc;
56
57 import freemarker.ext.beans.BeansWrapper;
58 import freemarker.template.TemplateHashModel;
59 import freemarker.template.TemplateModel;
60 import freemarker.template.TemplateModelException;
61
62 class JspContextModel
63 implements
64     TemplateHashModel
65 {
66     public static final int ANY_SCOPE = -1;
67     public static final int PAGE_SCOPE = PageContext.PAGE_SCOPE;
68     public static final int REQUEST_SCOPE = PageContext.REQUEST_SCOPE;
69     public static final int SESSION_SCOPE = PageContext.SESSION_SCOPE;
70     public static final int APPLICATION_SCOPE = PageContext.APPLICATION_SCOPE;
71
72     private final PageContext JavaDoc pageContext;
73     private final int scope;
74
75     public JspContextModel(PageContext JavaDoc pageContext, int scope)
76     {
77         this.pageContext = pageContext;
78         this.scope = scope;
79     }
80
81     public TemplateModel get(String JavaDoc key) throws TemplateModelException
82     {
83         Object JavaDoc bean = scope == ANY_SCOPE ? pageContext.findAttribute(key) : pageContext.getAttribute(key, scope);
84         return BeansWrapper.getDefaultInstance().wrap(bean);
85     }
86
87     public boolean isEmpty()
88     {
89         return false;
90     }
91 }
92
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