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Java > Open Source Codes > org > jaxen > QualifiedName


1 /*
2  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/QualifiedName.java,v 1.6 2005/06/19 19:48:13 elharo Exp $
3  * $Revision: 1.6 $
4  * $Date: 2005/06/19 19:48:13 $
5  *
6  * ====================================================================
7  *
8  * Copyright (C) 2000-2002 bob mcwhirter & James Strachan.
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  *
15  * 1. Redistributions of source code must retain the above copyright
16  * notice, this list of conditions, and the following disclaimer.
17  *
18  * 2. Redistributions in binary form must reproduce the above copyright
19  * notice, this list of conditions, and the disclaimer that follows
20  * these conditions in the documentation and/or other materials
21  * provided with the distribution.
22  *
23  * 3. The name "Jaxen" must not be used to endorse or promote products
24  * derived from this software without prior written permission. For
25  * written permission, please contact license@jaxen.org.
26  *
27  * 4. Products derived from this software may not be called "Jaxen", nor
28  * may "Jaxen" appear in their name, without prior written permission
29  * from the Jaxen Project Management (pm@jaxen.org).
30  *
31  * In addition, we request (but do not require) that you include in the
32  * end-user documentation provided with the redistribution and/or in the
33  * software itself an acknowledgement equivalent to the following:
34  * "This product includes software developed by the
35  * Jaxen Project (http://www.jaxen.org/)."
36  * Alternatively, the acknowledgment may be graphical using the logos
37  * available at http://www.jaxen.org/
38  *
39  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
40  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
41  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
42  * DISCLAIMED. IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT
43  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
45  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
46  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
47  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
48  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
49  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50  * SUCH DAMAGE.
51  *
52  * ====================================================================
53  * This software consists of voluntary contributions made by many
54  * individuals on behalf of the Jaxen Project and was originally
55  * created by bob mcwhirter <bob@werken.com> and
56  * James Strachan <jstrachan@apache.org>. For more information on the
57  * Jaxen Project, please see <http://www.jaxen.org/>.
58  *
59  * $Id: QualifiedName.java,v 1.6 2005/06/19 19:48:13 elharo Exp $
60  */
61
62 package org.jaxen;
63
64 /** A local name (that matches the XML NCName production) and a namespace URI
65  * with which the local name is qualified.
66  *
67  * @author Erwin Bolwidt ( ejb @ klomp.org )
68  */
69 class QualifiedName
70 {
71     private String JavaDoc namespaceURI;
72     private String JavaDoc localName;
73
74     /** Constructs a QualifiedName object.
75      *
76      * @param namespaceURI namespace URI that qualifies the name, or
77      * <code>null</code> for default namespace
78      * @param localName local name that is qualified by the namespace uri;
79      * must not be <code>null</code>
80      */
81     QualifiedName( String JavaDoc namespaceURI, String JavaDoc localName )
82     {
83         this.namespaceURI = namespaceURI;
84         this.localName = localName;
85     }
86
87     public int hashCode()
88     {
89         return ( localName.hashCode() ^
90                  ( namespaceURI == null ? 0 : namespaceURI.hashCode() ) );
91     }
92
93     public boolean equals( Object JavaDoc o )
94     {
95         // Because this class is package protected and used in only
96 // two other classes, it's never actually compared to anything
97 // other than another QualifiedName. No instanceof test is
98 // necessary here.
99 QualifiedName other = (QualifiedName) o;
100         
101         if ( namespaceURI == null ) {
102             return ( other.namespaceURI == null &&
103                      other.localName.equals(localName) );
104         }
105         else {
106             return ( namespaceURI.equals(other.namespaceURI) &&
107                      other.localName.equals(localName) );
108         }
109     }
110     
111 }
112
113
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