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Java > Open Source Codes > com > caucho > xml2 > QEntityReference


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.xml2;
30
31 import org.w3c.dom.EntityReference JavaDoc;
32 import org.w3c.dom.Node JavaDoc;
33
34 import java.io.IOException JavaDoc;
35
36 public class QEntityReference extends QNode implements EntityReference JavaDoc {
37   String JavaDoc _name;
38
39   public QEntityReference(String JavaDoc name)
40   {
41     _name = name;
42   }
43
44   protected QEntityReference(QDocument owner, String JavaDoc name)
45   {
46     super(owner);
47
48     _name = name;
49   }
50
51   public String JavaDoc getNodeName() { return _name; }
52   public String JavaDoc getTagName() { return _name; }
53   public short getNodeType() { return ENTITY_REFERENCE_NODE; }
54
55   private void lazyEvaluateChild()
56   {
57     if (_owner == null || _owner._dtd == null)
58       return;
59
60     QEntity entity = _owner._dtd.getEntity(_name);
61     if (entity == null || entity._firstChild == null)
62       return;
63
64     _firstChild = entity._firstChild;
65     _lastChild = entity._lastChild;
66   }
67
68   public Node JavaDoc getFirstChild()
69   {
70     if (_firstChild != null)
71       return _firstChild;
72
73     lazyEvaluateChild();
74
75     return _firstChild;
76   }
77
78   public Node JavaDoc getLastChild()
79   {
80     if (_lastChild != null)
81       return _lastChild;
82
83     lazyEvaluateChild();
84
85     return _lastChild;
86   }
87
88   public void print(XmlPrinter os) throws IOException JavaDoc
89   {
90     if (os.finishAttributes())
91       os.print(">");
92     
93     os.print("&");
94     os.print(getNodeName());
95     os.print(";");
96   }
97
98   public String JavaDoc toString()
99   {
100     return "EntityRef[" + getNodeName() + "]";
101   }
102 }
103
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