Coverage Report - org.jaxen.util.PrecedingSiblingAxisIterator

Classes in this File Line Coverage Branch Coverage Complexity
PrecedingSiblingAxisIterator
100% 
100% 
2.6

 1  
 /*
 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 $
 3  
  * $Revision: 1.13 $
 4  
  * $Date: 2005/06/28 13:44:44 $
 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: PrecedingSiblingAxisIterator.java,v 1.13 2005/06/28 13:44:44 elharo Exp $
 60  
  */
 61  
 
 62  
 
 63  
 
 64  
 package org.jaxen.util;
 65  
 
 66  
 import java.util.Iterator;
 67  
 import java.util.LinkedList;
 68  
 import java.util.NoSuchElementException;
 69  
 
 70  
 import org.jaxen.JaxenConstants;
 71  
 import org.jaxen.Navigator;
 72  
 import org.jaxen.UnsupportedAxisException;
 73  
 
 74  
 public class PrecedingSiblingAxisIterator implements Iterator
 75  
 {
 76  
     private Object    contextNode;
 77  
     private Navigator navigator;
 78  
 
 79  
     private Iterator  siblingIter;
 80  
     private Object    nextObj;
 81  
 
 82  
     public PrecedingSiblingAxisIterator(Object contextNode,
 83  
                                         Navigator navigator) throws UnsupportedAxisException
 84  1608
     {
 85  1608
         this.contextNode = contextNode;
 86  1608
         this.navigator   = navigator;
 87  
 
 88  1608
         init();
 89  1608
         if ( siblingIter.hasNext() )
 90  
         {
 91  456
             this.nextObj = siblingIter.next();
 92  
         }
 93  1608
     }
 94  
 
 95  
     private void init() throws UnsupportedAxisException
 96  
     {
 97  
         
 98  1608
         Object parent = this.navigator.getParentNode( this.contextNode );
 99  
 
 100  1608
         if ( parent != null )
 101  
         {
 102  1128
             Iterator childIter = this.navigator.getChildAxisIterator( parent );
 103  1128
             LinkedList siblings = new LinkedList();
 104  
             
 105  2580
             while ( childIter.hasNext() )
 106  
             {
 107  2580
                 Object eachChild = childIter.next();
 108  2580
                 if ( eachChild.equals(this.contextNode) )
 109  
                 {
 110  1128
                     break;
 111  
                 }
 112  1452
                 siblings.addFirst( eachChild );
 113  
             }
 114  
             
 115  1128
             this.siblingIter = siblings.iterator();
 116  
             
 117  
         }
 118  
         else {
 119  480
             this.siblingIter = JaxenConstants.EMPTY_ITERATOR;
 120  
         }
 121  
         
 122  1608
     }
 123  
 
 124  
     public boolean hasNext()
 125  
     {
 126  4614
         return ( this.nextObj != null );
 127  
     }
 128  
 
 129  
     public Object next() throws NoSuchElementException
 130  
     {
 131  1458
         if ( ! hasNext() )
 132  
         {
 133  6
             throw new NoSuchElementException();
 134  
         }
 135  
 
 136  1452
         Object obj = this.nextObj;
 137  1452
         if ( siblingIter.hasNext() )
 138  
         {
 139  996
             this.nextObj = siblingIter.next();
 140  
         }
 141  
         else {
 142  456
             this.nextObj = null;
 143  
         }
 144  1452
         return obj;
 145  
     }
 146  
 
 147  
     public void remove() throws UnsupportedOperationException
 148  
     {
 149  6
         throw new UnsupportedOperationException();
 150  
     }
 151  
 
 152  
 }