KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > jaxen > util > FollowingSiblingAxisIterator


1 /*
2  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/util/FollowingSiblingAxisIterator.java,v 1.8 2005/05/31 15:39:25 elharo Exp $
3  * $Revision: 1.8 $
4  * $Date: 2005/05/31 15:39:25 $
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: FollowingSiblingAxisIterator.java,v 1.8 2005/05/31 15:39:25 elharo Exp $
60  */

61
62
63
64 package org.jaxen.util;
65
66 import java.util.Iterator JavaDoc;
67 import java.util.NoSuchElementException JavaDoc;
68
69 import org.jaxen.JaxenConstants;
70 import org.jaxen.Navigator;
71 import org.jaxen.UnsupportedAxisException;
72
73 public class FollowingSiblingAxisIterator implements Iterator JavaDoc
74 {
75     private Object JavaDoc contextNode;
76     private Navigator navigator;
77     private Iterator JavaDoc siblingIter;
78
79     public FollowingSiblingAxisIterator(Object JavaDoc contextNode,
80                                         Navigator navigator) throws UnsupportedAxisException
81     {
82         this.contextNode = contextNode;
83         this.navigator = navigator;
84         init();
85     }
86
87     private void init() throws UnsupportedAxisException
88     {
89         Object JavaDoc parent = this.navigator.getParentNode( this.contextNode );
90
91         if ( parent != null )
92         {
93             siblingIter = this.navigator.getChildAxisIterator( parent );
94             
95             while ( siblingIter.hasNext() )
96             {
97                 Object JavaDoc eachChild = siblingIter.next();
98                 if ( eachChild.equals(this.contextNode) ) break;
99             }
100         }
101         else {
102             siblingIter = JaxenConstants.EMPTY_ITERATOR;
103         }
104
105     }
106
107     public boolean hasNext()
108     {
109         return siblingIter.hasNext();
110     }
111
112     public Object JavaDoc next() throws NoSuchElementException JavaDoc
113     {
114         return siblingIter.next();
115     }
116
117     public void remove() throws UnsupportedOperationException JavaDoc
118     {
119         throw new UnsupportedOperationException JavaDoc();
120     }
121
122 }
123
Popular Tags