| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| FollowingAxisIterator |
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| 3.6666666666666665;3.667 |
| 1 | package org.jaxen.util; |
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| 2 | ||
| 3 | /* |
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| 4 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/util/FollowingAxisIterator.java,v 1.6 2005/06/28 13:44:44 elharo Exp $ |
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| 5 | * $Revision: 1.6 $ |
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| 6 | * $Date: 2005/06/28 13:44:44 $ |
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| 7 | * |
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| 8 | * ==================================================================== |
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| 9 | * |
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| 10 | * Copyright (C) 2000-2005 bob mcwhirter & James Strachan. |
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| 11 | * All rights reserved. |
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| 12 | * |
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| 13 | * Redistribution and use in source and binary forms, with or without |
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| 14 | * modification, are permitted provided that the following conditions |
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| 15 | * are met: |
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| 16 | * |
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| 17 | * 1. Redistributions of source code must retain the above copyright |
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| 18 | * notice, this list of conditions, and the following disclaimer. |
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| 19 | * |
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| 20 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 21 | * notice, this list of conditions, and the disclaimer that follows |
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| 22 | * these conditions in the documentation and/or other materials |
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| 23 | * provided with the distribution. |
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| 24 | * |
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| 25 | * 3. The name "Jaxen" must not be used to endorse or promote products |
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| 26 | * derived from this software without prior written permission. For |
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| 27 | * written permission, please contact license@jaxen.org. |
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| 28 | * |
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| 29 | * 4. Products derived from this software may not be called "Jaxen", nor |
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| 30 | * may "Jaxen" appear in their name, without prior written permission |
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| 31 | * from the Jaxen Project Management (pm@jaxen.org). |
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| 32 | * |
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| 33 | * In addition, we request (but do not require) that you include in the |
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| 34 | * end-user documentation provided with the redistribution and/or in the |
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| 35 | * software itself an acknowledgement equivalent to the following: |
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| 36 | * "This product includes software developed by the |
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| 37 | * Jaxen Project <http://www.jaxen.org/>." |
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| 38 | * Alternatively, the acknowledgment may be graphical using the logos |
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| 39 | * available at http://www.jaxen.org/ |
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| 40 | * |
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| 41 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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| 42 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 43 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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| 44 | * DISCLAIMED. IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT |
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| 45 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 46 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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| 47 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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| 48 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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| 49 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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| 50 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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| 51 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 52 | * SUCH DAMAGE. |
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| 53 | * |
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| 54 | * ==================================================================== |
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| 55 | * This software consists of voluntary contributions made by many |
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| 56 | * individuals on behalf of the Jaxen Project and was originally |
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| 57 | * created by bob mcwhirter <bob@werken.com> and |
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| 58 | * James Strachan <jstrachan@apache.org>. For more information on the |
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| 59 | * Jaxen Project, please see <http://www.jaxen.org/>. |
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| 60 | * |
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| 61 | * $Id: FollowingAxisIterator.java,v 1.6 2005/06/28 13:44:44 elharo Exp $ |
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| 62 | */ |
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| 63 | ||
| 64 | import java.util.Iterator; |
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| 65 | import java.util.NoSuchElementException; |
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| 66 | ||
| 67 | import org.jaxen.Navigator; |
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| 68 | import org.jaxen.UnsupportedAxisException; |
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| 69 | import org.jaxen.JaxenRuntimeException; |
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| 70 | import org.jaxen.JaxenConstants; |
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| 71 | ||
| 72 | public class FollowingAxisIterator implements Iterator |
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| 73 | { |
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| 74 | private Object contextNode; |
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| 75 | ||
| 76 | private Navigator navigator; |
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| 77 | ||
| 78 | private Iterator siblings; |
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| 79 | ||
| 80 | private Iterator currentSibling; |
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| 81 | ||
| 82 | public FollowingAxisIterator(Object contextNode, |
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| 83 | Navigator navigator) throws UnsupportedAxisException |
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| 84 | 156 | { |
| 85 | 156 | this.contextNode = contextNode; |
| 86 | 156 | this.navigator = navigator; |
| 87 | 156 | this.siblings = navigator.getFollowingSiblingAxisIterator(contextNode); |
| 88 | 156 | this.currentSibling = JaxenConstants.EMPTY_ITERATOR; |
| 89 | 156 | } |
| 90 | ||
| 91 | private boolean goForward() |
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| 92 | { |
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| 93 | 942 | while ( ! siblings.hasNext() ) |
| 94 | { |
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| 95 | 366 | if ( !goUp() ) |
| 96 | { |
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| 97 | 150 | return false; |
| 98 | } |
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| 99 | } |
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| 100 | ||
| 101 | 576 | Object nextSibling = siblings.next(); |
| 102 | ||
| 103 | 576 | this.currentSibling = new DescendantOrSelfAxisIterator(nextSibling, navigator); |
| 104 | ||
| 105 | 576 | return true; |
| 106 | } |
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| 107 | ||
| 108 | private boolean goUp() |
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| 109 | { |
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| 110 | 366 | if ( contextNode == null |
| 111 | || |
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| 112 | navigator.isDocument(contextNode) ) |
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| 113 | { |
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| 114 | 24 | return false; |
| 115 | } |
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| 116 | ||
| 117 | try |
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| 118 | { |
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| 119 | 342 | contextNode = navigator.getParentNode( contextNode ); |
| 120 | ||
| 121 | 342 | if ( contextNode != null |
| 122 | && |
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| 123 | !navigator.isDocument(contextNode) ) |
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| 124 | { |
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| 125 | 216 | siblings = navigator.getFollowingSiblingAxisIterator(contextNode); |
| 126 | 216 | return true; |
| 127 | } |
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| 128 | else |
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| 129 | { |
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| 130 | 126 | return false; |
| 131 | } |
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| 132 | } |
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| 133 | 0 | catch (UnsupportedAxisException e) |
| 134 | { |
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| 135 | 0 | throw new JaxenRuntimeException(e); |
| 136 | } |
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| 137 | } |
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| 138 | ||
| 139 | public boolean hasNext() |
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| 140 | { |
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| 141 | 4272 | while ( ! currentSibling.hasNext() ) |
| 142 | { |
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| 143 | 726 | if ( ! goForward() ) |
| 144 | { |
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| 145 | 150 | return false; |
| 146 | } |
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| 147 | } |
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| 148 | ||
| 149 | 3546 | return true; |
| 150 | } |
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| 151 | ||
| 152 | public Object next() throws NoSuchElementException |
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| 153 | { |
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| 154 | 1734 | if ( ! hasNext() ) |
| 155 | { |
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| 156 | 6 | throw new NoSuchElementException(); |
| 157 | } |
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| 158 | ||
| 159 | 1728 | return currentSibling.next(); |
| 160 | } |
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| 161 | ||
| 162 | public void remove() throws UnsupportedOperationException |
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| 163 | { |
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| 164 | 6 | throw new UnsupportedOperationException(); |
| 165 | } |
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| 166 | } |