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


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.Node JavaDoc;
61
62 /**
63  * NON-DOM CLASS: Describe one of the Elements (and its associated
64  * Attributes) defined in this Document Type.
65  * <p>
66  * I've included this in Level 1 purely as an anchor point for default
67  * attributes. In Level 2 it should enable the ChildRule support.
68  *
69  * @version
70  */
71 public class DeferredElementDefinitionImpl
72     extends ElementDefinitionImpl
73     implements DeferredNode {
74
75     //
76 // Constants
77 //
78
79     /** Serialization version. */
80     static final long serialVersionUID = 6703238199538041591L;
81     
82     //
83 // Data
84 //
85
86     /** Node index. */
87     protected transient int fNodeIndex;
88
89     //
90 // Constructors
91 //
92
93     /**
94      * This is the deferred constructor. Only the fNodeIndex is given here.
95      * All other data, can be requested from the ownerDocument via the index.
96      */
97     DeferredElementDefinitionImpl(DeferredDocumentImpl ownerDocument, int nodeIndex) {
98         super(ownerDocument, null);
99         
100         fNodeIndex = nodeIndex;
101         needsSyncData(true);
102         needsSyncChildren(true);
103
104     } // <init>(DeferredDocumentImpl,int)
105
106     //
107 // DeferredNode methods
108 //
109
110     /** Returns the node index. */
111     public int getNodeIndex() {
112         return fNodeIndex;
113     }
114
115     //
116 // Protected methods
117 //
118
119     /** Synchronizes the data (name and value) for fast nodes. */
120     protected void synchronizeData() {
121
122         // no need to sync in the future
123 needsSyncData(false);
124
125         // fluff data
126 DeferredDocumentImpl ownerDocument =
127             (DeferredDocumentImpl)this.ownerDocument;
128         name = ownerDocument.getNodeNameString(fNodeIndex);
129
130     } // synchronizeData()
131
132     /** Synchronizes the default attribute values. */
133     protected void synchronizeChildren() {
134
135         // we don't want to generate any event for this so turn them off
136 boolean orig = ownerDocument.getMutationEvents();
137         ownerDocument.setMutationEvents(false);
138
139         // attributes are now synced
140 needsSyncChildren(false);
141
142         // create attributes node map
143 DeferredDocumentImpl ownerDocument =
144             (DeferredDocumentImpl)this.ownerDocument;
145         attributes = new NamedNodeMapImpl(ownerDocument);
146
147         // Default attributes dangle as children of the element
148 // definition "node" in the internal fast table.
149 for (int nodeIndex = ownerDocument.getLastChild(fNodeIndex);
150              nodeIndex != -1;
151              nodeIndex = ownerDocument.getPrevSibling(nodeIndex)) {
152             Node JavaDoc attr = ownerDocument.getNodeObject(nodeIndex);
153             attributes.setNamedItem(attr);
154         }
155
156         // set mutation events flag back to its original value
157 ownerDocument.setMutationEvents(orig);
158
159     } // synchronizeChildren()
160
161 } // class DeferredElementDefinitionImpl
162
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