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Java > Open Source Codes > org > jaxen > expr > iter > IterableAttributeAxis


1 /*
2  $Id: IterableAttributeAxis.java,v 1.6 2005/01/30 03:19:37 elharo Exp $
3
4  Copyright 2003 (C) The Werken Company. All Rights Reserved.
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7  ("Software"), with or without modification, are permitted provided
8  that the following conditions are met:
9
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12     copy of this document.
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15     above copyright notice, this list of conditions and the
16     following disclaimer in the documentation and/or other
17     materials provided with the distribution.
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19  3. The name "jaxen" must not be used to endorse or promote
20     products derived from this Software without prior written
21     permission of The Werken Company. For written permission,
22     please contact bob@werken.com.
23  
24  4. Products derived from this Software may not be called "jaxen"
25     nor may "jaxen" appear in their names without prior written
26     permission of The Werken Company. "jaxen" is a registered
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29  5. Due credit should be given to The Werken Company.
30     (http://jaxen.werken.com/).
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32  THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS
33  ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
34  NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
35  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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44
45  */
46 package org.jaxen.expr.iter;
47
48 import java.util.Iterator JavaDoc;
49
50 import org.jaxen.ContextSupport;
51 import org.jaxen.NamedAccessNavigator;
52 import org.jaxen.UnsupportedAxisException;
53
54 /**
55  * Provide access to the attribute xpath axis.
56  *
57  * @author Bob McWhirter
58  * @author James Strachan
59  * @author Stephen Colebourne
60  */
61 public class IterableAttributeAxis extends IterableAxis {
62     
63     /**
64      * Constructor.
65      *
66      * @param value the axis value
67      */
68     public IterableAttributeAxis(int value) {
69         super(value);
70     }
71
72     /**
73      * Gets the iterator for the child xpath axis.
74      *
75      * @param contextNode the current context node to work from
76      * @param support the additional context information
77      */
78     public Iterator JavaDoc iterator(Object JavaDoc contextNode, ContextSupport support) throws UnsupportedAxisException {
79         return support.getNavigator().getAttributeAxisIterator(contextNode);
80     }
81
82     /**
83      * Gets the iterator for the attribute xpath axis that supports named access.
84      *
85      * @param contextNode the current context node to work from
86      * @param support the additional context information
87      * @param localName the local name of the attributes to return
88      * @param namespacePrefix the prefix of the namespace of the attributes to return
89      * @param namespaceURI the uri of the namespace of the attributes to return
90      */
91     public Iterator JavaDoc namedAccessIterator(
92         Object JavaDoc contextNode,
93         ContextSupport support,
94         String JavaDoc localName,
95         String JavaDoc namespacePrefix,
96         String JavaDoc namespaceURI)
97             throws UnsupportedAxisException {
98                 
99         NamedAccessNavigator nav = (NamedAccessNavigator) support.getNavigator();
100         return nav.getAttributeAxisIterator(contextNode, localName, namespacePrefix, namespaceURI);
101     }
102
103     /**
104      * Does this axis support named access?
105      *
106      * @param support the additional context information
107      * @return true if named access supported. If not iterator() will be used.
108      */
109     public boolean supportsNamedAccess(ContextSupport support) {
110         return (support.getNavigator() instanceof NamedAccessNavigator);
111     }
112
113 }
114
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