KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > freemarker > ext > dom > DocumentModel


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
36  * DISCLAIMED. IN NO EVENT SHALL THE VISIGOTH SOFTWARE SOCIETY OR
37  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
38  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
39  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
40  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
41  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
42  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
43  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44  * SUCH DAMAGE.
45  * ====================================================================
46  *
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.dom;
54  
55 import org.w3c.dom.*;
56 import freemarker.template.*;
57 import freemarker.core.Environment;
58 import freemarker.template.utility.StringUtil;
59
60 /**
61  * A class that wraps the root node of a parsed XML document, using
62  * the W3C DOM API.
63  */
64
65 class DocumentModel extends NodeModel implements TemplateHashModel {
66     
67     private ElementModel rootElement;
68     
69     DocumentModel(Document doc) {
70         super(doc);
71     }
72     
73     public String JavaDoc getNodeName() {
74         return "@document";
75     }
76     
77     public TemplateModel get(String JavaDoc key) throws TemplateModelException {
78         if (key.equals("*")) {
79             return getRootElement();
80         }
81         else if (key.equals("**")) {
82             NodeList nl = ((Document)node).getElementsByTagName("*");
83             return new NodeListModel(nl, this);
84         }
85         else if (StringUtil.isXMLID(key)) {
86             ElementModel em = (ElementModel) NodeModel.wrap(((Document) node).getDocumentElement());
87             if (em.matchesName(key, Environment.getCurrentEnvironment())) {
88                 return em;
89             } else {
90                 return new NodeListModel(this);
91             }
92         }
93         return super.get(key);
94     }
95     
96     ElementModel getRootElement() {
97         if (rootElement == null) {
98             rootElement = (ElementModel) wrap(((Document) node).getDocumentElement());
99         }
100         return rootElement;
101     }
102     
103     public boolean isEmpty() {
104         return false;
105     }
106 }
Popular Tags