1 /*
2 * Copyright 2001-2004 (C) MetaStuff, Ltd. All Rights Reserved.
3 *
4 * This software is open source.
5 * See the bottom of this file for the licence.
6 *
7 * $Id: DefaultNamespace.java,v 1.13 2004/06/25 08:03:41 maartenc Exp $
8 */
9
10 package org.dom4j.tree;
11
12 import org.dom4j.Element;
13 import org.dom4j.Namespace;
14
15 /*** <p><code>DefaultNamespace</code> implements a doubly linked node which
16 * supports the parent relationship and is mutable.
17 * It is useful when returning results from XPath expressions.</p>
18 *
19 * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
20 * @version $Revision: 1.13 $
21 */
22 public class DefaultNamespace extends Namespace {
23
24 /*** The parent of this node */
25 private Element parent;
26
27 /*** @param prefix is the prefix for this namespace
28 * @param uri is the URI for this namespace
29 */
30 public DefaultNamespace(String prefix,String uri) {
31 super( prefix, uri );
32 }
33
34 /*** @param parent is the parent element
35 * @param prefix is the prefix for this namespace
36 * @param uri is the URI for this namespace
37 */
38 public DefaultNamespace(Element parent,String prefix,String uri) {
39 super( prefix, uri );
40 this.parent = parent;
41 }
42
43 /*** @return the hash code based on the qualified name and the URI of the
44 * namespace and the hashCode() of the parent element.
45 */
46 protected int createHashCode() {
47 int hashCode = super.createHashCode();
48 if ( parent != null ) {
49 hashCode ^= parent.hashCode();
50 }
51 return hashCode;
52 }
53
54 /*** Implements an identity based comparsion using the parent element as well as
55 * the prefix and URI
56 */
57 public boolean equals(Object object) {
58 if ( object instanceof DefaultNamespace ) {
59 DefaultNamespace that = (DefaultNamespace) object;
60 if ( that.parent == parent ) {
61 return super.equals( object );
62 }
63 }
64 return false;
65 }
66
67
68 public Element getParent() {
69 return parent;
70 }
71
72 public void setParent(Element parent) {
73 this.parent = parent;
74 }
75
76 public boolean supportsParent() {
77 return true;
78 }
79 }
80
81
82
83
84 /*
85 * Redistribution and use of this software and associated documentation
86 * ("Software"), with or without modification, are permitted provided
87 * that the following conditions are met:
88 *
89 * 1. Redistributions of source code must retain copyright
90 * statements and notices. Redistributions must also contain a
91 * copy of this document.
92 *
93 * 2. Redistributions in binary form must reproduce the
94 * above copyright notice, this list of conditions and the
95 * following disclaimer in the documentation and/or other
96 * materials provided with the distribution.
97 *
98 * 3. The name "DOM4J" must not be used to endorse or promote
99 * products derived from this Software without prior written
100 * permission of MetaStuff, Ltd. For written permission,
101 * please contact dom4j-info@metastuff.com.
102 *
103 * 4. Products derived from this Software may not be called "DOM4J"
104 * nor may "DOM4J" appear in their names without prior written
105 * permission of MetaStuff, Ltd. DOM4J is a registered
106 * trademark of MetaStuff, Ltd.
107 *
108 * 5. Due credit should be given to the DOM4J Project -
109 * http://www.dom4j.org
110 *
111 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS
112 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
113 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
114 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
115 * METASTUFF, LTD. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
116 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
117 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
118 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
119 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
120 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
121 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
122 * OF THE POSSIBILITY OF SUCH DAMAGE.
123 *
124 * Copyright 2001-2004 (C) MetaStuff, Ltd. All Rights Reserved.
125 *
126 * $Id: DefaultNamespace.java,v 1.13 2004/06/25 08:03:41 maartenc Exp $
127 */