| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| PrecedingSiblingAxisIterator |
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| 2.6;2.6 |
| 1 | /* |
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| 2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/util/PrecedingSiblingAxisIterator.java,v 1.13 2005/06/28 13:44:44 elharo Exp $ |
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| 3 | * $Revision: 1.13 $ |
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| 4 | * $Date: 2005/06/28 13:44:44 $ |
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| 5 | * |
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| 6 | * ==================================================================== |
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| 7 | * |
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| 8 | * Copyright (C) 2000-2002 bob mcwhirter & James Strachan. |
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| 9 | * All rights reserved. |
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| 10 | * |
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| 11 | * Redistribution and use in source and binary forms, with or without |
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| 12 | * modification, are permitted provided that the following conditions |
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| 13 | * are met: |
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| 14 | * |
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| 15 | * 1. Redistributions of source code must retain the above copyright |
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| 16 | * notice, this list of conditions, and the following disclaimer. |
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| 17 | * |
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| 18 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 19 | * notice, this list of conditions, and the disclaimer that follows |
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| 20 | * these conditions in the documentation and/or other materials |
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| 21 | * provided with the distribution. |
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| 22 | * |
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| 23 | * 3. The name "Jaxen" must not be used to endorse or promote products |
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| 24 | * derived from this software without prior written permission. For |
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| 25 | * written permission, please contact license@jaxen.org. |
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| 26 | * |
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| 27 | * 4. Products derived from this software may not be called "Jaxen", nor |
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| 28 | * may "Jaxen" appear in their name, without prior written permission |
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| 29 | * from the Jaxen Project Management (pm@jaxen.org). |
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| 30 | * |
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| 31 | * In addition, we request (but do not require) that you include in the |
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| 32 | * end-user documentation provided with the redistribution and/or in the |
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| 33 | * software itself an acknowledgement equivalent to the following: |
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| 34 | * "This product includes software developed by the |
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| 35 | * Jaxen Project <http://www.jaxen.org/>." |
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| 36 | * Alternatively, the acknowledgment may be graphical using the logos |
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| 37 | * available at http://www.jaxen.org/ |
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| 38 | * |
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| 39 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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| 40 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 41 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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| 42 | * DISCLAIMED. IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT |
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| 43 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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| 45 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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| 46 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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| 47 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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| 48 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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| 49 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 50 | * SUCH DAMAGE. |
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| 51 | * |
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| 52 | * ==================================================================== |
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| 53 | * This software consists of voluntary contributions made by many |
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| 54 | * individuals on behalf of the Jaxen Project and was originally |
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| 55 | * created by bob mcwhirter <bob@werken.com> and |
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| 56 | * James Strachan <jstrachan@apache.org>. For more information on the |
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| 57 | * Jaxen Project, please see <http://www.jaxen.org/>. |
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| 58 | * |
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| 59 | * $Id: PrecedingSiblingAxisIterator.java,v 1.13 2005/06/28 13:44:44 elharo Exp $ |
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| 60 | */ |
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| 61 | ||
| 62 | ||
| 63 | ||
| 64 | package org.jaxen.util; |
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| 65 | ||
| 66 | import java.util.Iterator; |
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| 67 | import java.util.LinkedList; |
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| 68 | import java.util.NoSuchElementException; |
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| 69 | ||
| 70 | import org.jaxen.JaxenConstants; |
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| 71 | import org.jaxen.Navigator; |
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| 72 | import org.jaxen.UnsupportedAxisException; |
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| 73 | ||
| 74 | public class PrecedingSiblingAxisIterator implements Iterator |
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| 75 | { |
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| 76 | private Object contextNode; |
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| 77 | private Navigator navigator; |
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| 78 | ||
| 79 | private Iterator siblingIter; |
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| 80 | private Object nextObj; |
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| 81 | ||
| 82 | public PrecedingSiblingAxisIterator(Object contextNode, |
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| 83 | Navigator navigator) throws UnsupportedAxisException |
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| 84 | 1608 | { |
| 85 | 1608 | this.contextNode = contextNode; |
| 86 | 1608 | this.navigator = navigator; |
| 87 | ||
| 88 | 1608 | init(); |
| 89 | 1608 | if ( siblingIter.hasNext() ) |
| 90 | { |
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| 91 | 456 | this.nextObj = siblingIter.next(); |
| 92 | } |
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| 93 | 1608 | } |
| 94 | ||
| 95 | private void init() throws UnsupportedAxisException |
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| 96 | { |
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| 97 | ||
| 98 | 1608 | Object parent = this.navigator.getParentNode( this.contextNode ); |
| 99 | ||
| 100 | 1608 | if ( parent != null ) |
| 101 | { |
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| 102 | 1128 | Iterator childIter = this.navigator.getChildAxisIterator( parent ); |
| 103 | 1128 | LinkedList siblings = new LinkedList(); |
| 104 | ||
| 105 | 2580 | while ( childIter.hasNext() ) |
| 106 | { |
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| 107 | 2580 | Object eachChild = childIter.next(); |
| 108 | 2580 | if ( eachChild.equals(this.contextNode) ) |
| 109 | { |
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| 110 | 1128 | break; |
| 111 | } |
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| 112 | 1452 | siblings.addFirst( eachChild ); |
| 113 | } |
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| 114 | ||
| 115 | 1128 | this.siblingIter = siblings.iterator(); |
| 116 | ||
| 117 | } |
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| 118 | else { |
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| 119 | 480 | this.siblingIter = JaxenConstants.EMPTY_ITERATOR; |
| 120 | } |
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| 121 | ||
| 122 | 1608 | } |
| 123 | ||
| 124 | public boolean hasNext() |
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| 125 | { |
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| 126 | 4614 | return ( this.nextObj != null ); |
| 127 | } |
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| 128 | ||
| 129 | public Object next() throws NoSuchElementException |
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| 130 | { |
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| 131 | 1458 | if ( ! hasNext() ) |
| 132 | { |
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| 133 | 6 | throw new NoSuchElementException(); |
| 134 | } |
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| 135 | ||
| 136 | 1452 | Object obj = this.nextObj; |
| 137 | 1452 | if ( siblingIter.hasNext() ) |
| 138 | { |
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| 139 | 996 | this.nextObj = siblingIter.next(); |
| 140 | } |
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| 141 | else { |
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| 142 | 456 | this.nextObj = null; |
| 143 | } |
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| 144 | 1452 | return obj; |
| 145 | } |
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| 146 | ||
| 147 | public void remove() throws UnsupportedOperationException |
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| 148 | { |
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| 149 | 6 | throw new UnsupportedOperationException(); |
| 150 | } |
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| 151 | ||
| 152 | } |