Coverage Report - org.jaxen.expr.DefaultLocationPath

Classes in this File Line Coverage Branch Coverage Complexity
DefaultLocationPath
100% 
100% 
1.889

 1  
 /*
 2  
  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultLocationPath.java,v 1.27 2005/06/28 13:44:44 elharo Exp $
 3  
  * $Revision: 1.27 $
 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: DefaultLocationPath.java,v 1.27 2005/06/28 13:44:44 elharo Exp $
 60  
  */
 61  
 package org.jaxen.expr;
 62  
 
 63  
 import java.util.ArrayList;
 64  
 import java.util.Collections;
 65  
 import java.util.Iterator;
 66  
 import java.util.LinkedList;
 67  
 import java.util.List;
 68  
 
 69  
 import org.jaxen.Context;
 70  
 import org.jaxen.ContextSupport;
 71  
 import org.jaxen.JaxenException;
 72  
 
 73  
 abstract class DefaultLocationPath extends DefaultExpr implements LocationPath
 74  
 {
 75  
     private List steps;
 76  
     
 77  
     /**
 78  
      * Create a new empty location path.
 79  
      */
 80  
     DefaultLocationPath()
 81  9966
     {
 82  9966
         this.steps = new LinkedList();
 83  9966
     }
 84  
 
 85  
     public void addStep(Step step)
 86  
     {
 87  15864
         getSteps().add(step);
 88  15864
     }
 89  
 
 90  
     public List getSteps()
 91  
     {
 92  68850
         return this.steps;
 93  
     }
 94  
 
 95  
     public Expr simplify()
 96  
     {
 97  9642
         Iterator stepIter = getSteps().iterator();
 98  9642
         Step eachStep = null;
 99  25284
         while (stepIter.hasNext())
 100  
         {
 101  15642
             eachStep = (Step) stepIter.next();
 102  15642
             eachStep.simplify();
 103  
         }
 104  9642
         return this;
 105  
     }
 106  
 
 107  
     public String getText()
 108  
     {
 109  36
         StringBuffer buf = new StringBuffer();
 110  36
         Iterator stepIter = getSteps().iterator();
 111  108
         while (stepIter.hasNext())
 112  
         {
 113  72
             buf.append(((Step) stepIter.next()).getText());
 114  72
             if (stepIter.hasNext())
 115  
             {
 116  36
                 buf.append("/");
 117  
             }
 118  
         }
 119  36
         return buf.toString();
 120  
     }
 121  
 
 122  
     public String toString()
 123  
     {
 124  6
         StringBuffer buf = new StringBuffer();
 125  6
         Iterator stepIter = getSteps().iterator();
 126  18
         while (stepIter.hasNext())
 127  
         {
 128  12
             buf.append(stepIter.next().toString());
 129  12
             if (stepIter.hasNext())
 130  
             {
 131  6
                 buf.append("/");
 132  
             }
 133  
         }
 134  6
         return buf.toString();
 135  
     }
 136  
 
 137  
     public boolean isAbsolute()
 138  
     {
 139  132
         return false;
 140  
     }
 141  
 
 142  
     public Object evaluate(Context context) throws JaxenException
 143  
     {
 144  21582
         List nodeSet = context.getNodeSet();
 145  21582
         List contextNodeSet = new ArrayList(nodeSet.size());
 146  21582
         contextNodeSet.addAll(nodeSet);
 147  21582
         ContextSupport support = context.getContextSupport();
 148  21582
         Context stepContext = new Context(support);
 149  21582
         Iterator stepIter = getSteps().iterator();
 150  50178
         while ( stepIter.hasNext() )
 151  
         {
 152  28614
             Step eachStep = (Step) stepIter.next();
 153  28614
             stepContext.setNodeSet(contextNodeSet);
 154  28614
             contextNodeSet = eachStep.evaluate(stepContext);
 155  
             // now we need to reverse the list if this is a reverse axis
 156  28596
             if (isReverseAxis(eachStep)) {
 157  660
                 Collections.reverse(contextNodeSet);
 158  
             }
 159  
         }
 160  
         
 161  21564
         if (getSteps().size() > 1) {
 162  5472
             Collections.sort(contextNodeSet, new NodeComparator(support.getNavigator()));
 163  
         }
 164  
         
 165  21564
         return contextNodeSet;
 166  
     }
 167  
 
 168  
     private boolean isReverseAxis(Step step) {
 169  
 
 170  28596
         int axis = step.getAxis();
 171  28596
         return axis == org.jaxen.saxpath.Axis.PRECEDING
 172  
           || axis == org.jaxen.saxpath.Axis.PRECEDING_SIBLING
 173  
           || axis == org.jaxen.saxpath.Axis.ANCESTOR
 174  
           || axis == org.jaxen.saxpath.Axis.ANCESTOR_OR_SELF;
 175  
     }
 176  
 
 177  
 }
 178