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Java > Open Source Codes > org > enhydra > apache > xerces > dom > DeferredTextImpl


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  *
5  * Copyright (c) 1999 The Apache Software Foundation. All rights
6  * reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * 3. The end-user documentation included with the redistribution,
21  * if any, must include the following acknowledgment:
22  * "This product includes software developed by the
23  * Apache Software Foundation (http://www.apache.org/)."
24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
26  *
27  * 4. The names "Xerces" and "Apache Software Foundation" must
28  * not be used to endorse or promote products derived from this
29  * software without prior written permission. For written
30  * permission, please contact apache@apache.org.
31  *
32  * 5. Products derived from this software may not be called "Apache",
33  * nor may "Apache" appear in their name, without prior written
34  * permission of the Apache Software Foundation.
35  *
36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39  * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47  * SUCH DAMAGE.
48  * ====================================================================
49  *
50  * This software consists of voluntary contributions made by many
51  * individuals on behalf of the Apache Software Foundation and was
52  * originally based on software copyright (c) 1999, International
53  * Business Machines, Inc., http://www.apache.org. For more
54  * information on the Apache Software Foundation, please see
55  * <http://www.apache.org/>.
56  */
57
58 package org.enhydra.apache.xerces.dom;
59
60 import org.w3c.dom.Element JavaDoc;
61
62 /**
63  * Text nodes hold the non-markup, non-Entity content of
64  * an Element or Attribute.
65  * <P>
66  * When a document is first made available to the DOM, there is only
67  * one Text object for each block of adjacent plain-text. Users (ie,
68  * applications) may create multiple adjacent Texts during editing --
69  * see {@link Element#normalize} for discussion.
70  * <P>
71  * Note that CDATASection is a subclass of Text. This is conceptually
72  * valid, since they're really just two different ways of quoting
73  * characters when they're written out as part of an XML stream.
74  *
75  * @version
76  * @since PR-DOM-Level-1-19980818.
77  */
78 public class DeferredTextImpl
79     extends TextImpl
80     implements DeferredNode {
81
82     //
83 // Constants
84 //
85
86     /** Serialization version. */
87     static final long serialVersionUID = 2310613872100393425L;
88
89     //
90 // Data
91 //
92
93     /** Node index. */
94     protected transient int fNodeIndex;
95
96     //
97 // Constructors
98 //
99
100     /**
101      * This is the deferred constructor. Only the fNodeIndex is given here.
102      * All other data, can be requested from the ownerDocument via the index.
103      */
104     DeferredTextImpl(DeferredDocumentImpl ownerDocument, int nodeIndex) {
105         super(ownerDocument, null);
106
107         fNodeIndex = nodeIndex;
108         needsSyncData(true);
109
110     } // <init>(DeferredDocumentImpl,int)
111
112     //
113 // DeferredNode methods
114 //
115
116     /** Returns the node index. */
117     public int getNodeIndex() {
118         return fNodeIndex;
119     }
120
121     //
122 // Protected methods
123 //
124
125     /** Synchronizes the underlying data. */
126     protected void synchronizeData() {
127
128         // no need for future synchronizations
129 needsSyncData(false);
130
131         // get initial text value
132 DeferredDocumentImpl ownerDocument =
133             (DeferredDocumentImpl) this.ownerDocument();
134         data = ownerDocument.getNodeValueString(fNodeIndex);
135
136         // NOTE: We used to normalize adjacent text node values here.
137 // This code has moved to the DeferredDocumentImpl
138 // getNodeValueString() method. -Ac
139
140         // ignorable whitespace
141 isIgnorableWhitespace(ownerDocument.getLastChild(fNodeIndex) == 1);
142
143     } // synchronizeData()
144
145 } // class DeferredTextImpl
146
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