Coverage Report - org.jaxen.javabean.JavaBeanXPath
 
Classes in this File Line Coverage Branch Coverage Complexity
JavaBeanXPath
62%
18/29
88%
7/8
5.333
 
 1  
 /*
 2  
  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/javabean/JavaBeanXPath.java,v 1.6 2006/06/03 20:36:00 elharo Exp $
 3  
  * $Revision: 1.6 $
 4  
  * $Date: 2006/06/03 20:36:00 $
 5  
  *
 6  
  * ====================================================================
 7  
  *
 8  
  * Copyright 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 are
 13  
  * met:
 14  
  * 
 15  
  *   * Redistributions of source code must retain the above copyright
 16  
  *     notice, this list of conditions and the following disclaimer.
 17  
  * 
 18  
  *   * Redistributions in binary form must reproduce the above copyright
 19  
  *     notice, this list of conditions and the following disclaimer in the
 20  
  *     documentation and/or other materials provided with the distribution.
 21  
  * 
 22  
  *   * Neither the name of the Jaxen Project nor the names of its
 23  
  *     contributors may be used to endorse or promote products derived 
 24  
  *     from this software without specific prior written permission.
 25  
  * 
 26  
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 27  
  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 28  
  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 29  
  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
 30  
  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 31  
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 32  
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 33  
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 34  
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 35  
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 36  
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 37  
  *
 38  
  * ====================================================================
 39  
  * This software consists of voluntary contributions made by many 
 40  
  * individuals on behalf of the Jaxen Project and was originally 
 41  
  * created by bob mcwhirter <bob@werken.com> and 
 42  
  * James Strachan <jstrachan@apache.org>.  For more information on the 
 43  
  * Jaxen Project, please see <http://www.jaxen.org/>.
 44  
  * 
 45  
  * $Id: JavaBeanXPath.java,v 1.6 2006/06/03 20:36:00 elharo Exp $
 46  
  */
 47  
 
 48  
 package org.jaxen.javabean;
 49  
 
 50  
 import org.jaxen.Context;
 51  
 import org.jaxen.BaseXPath;
 52  
 import org.jaxen.JaxenException;
 53  
 
 54  
 import java.util.List;
 55  
 import java.util.ArrayList;
 56  
 import java.util.Collection;
 57  
 import java.util.Iterator;
 58  
 
 59  
 /** An XPath implementation for JavaBeans.
 60  
  *
 61  
  * <p>This is the main entry point for matching an XPath against a JavaBean
 62  
  * tree.  You create a compiled XPath object, then match it against
 63  
  * one or more context nodes using the {@link #selectNodes(Object)}
 64  
  * method, as in the following example:</p>
 65  
  *
 66  
  * <pre>
 67  
  * Node node = ...;
 68  
  * XPath path = new JavaBeanXPath("a/b/c");
 69  
  * List results = path.selectNodes(node);
 70  
  * </pre>
 71  
  *
 72  
  * @see BaseXPath
 73  
  *
 74  
  * @author <a href="mailto:bob@werken.com">bob mcwhirter</a>
 75  
  *
 76  
  * @version $Revision: 1.6 $
 77  
  */
 78  
 public class JavaBeanXPath extends BaseXPath
 79  
 {
 80  
     /**
 81  
      * 
 82  
      */
 83  
     private static final long serialVersionUID = -1567521943360266313L;
 84  
 
 85  
     /** Construct given an XPath expression string.
 86  
      *
 87  
      *  @param xpathExpr The XPath expression.
 88  
      *
 89  
      *  @throws JaxenException if there is a syntax error while
 90  
      *          parsing the expression
 91  
      */
 92  
     public JavaBeanXPath(String xpathExpr) throws JaxenException
 93  
     {
 94  2
         super( xpathExpr, DocumentNavigator.getInstance() );
 95  2
     }
 96  
 
 97  
     protected Context getContext(Object node)
 98  
     {
 99  2
         if ( node instanceof Context )
 100  
         {
 101  0
             return (Context) node;
 102  
         }
 103  
 
 104  2
         if ( node instanceof Element )
 105  
         {
 106  0
             return super.getContext( node );
 107  
         }
 108  
 
 109  2
         if ( node instanceof List )
 110  
         {
 111  0
             List newList = new ArrayList();
 112  
 
 113  0
             for ( Iterator listIter = ((List)node).iterator();
 114  0
                   listIter.hasNext(); )
 115  
             {
 116  0
                 newList.add( new Element( null, "root", listIter.next() ) );
 117  0
             }
 118  
 
 119  0
             return super.getContext( newList );
 120  
         }
 121  
 
 122  2
         return super.getContext( new Element( null, "root", node ) );
 123  
     }
 124  
 
 125  
     public Object evaluate(Object node)
 126  
         throws JaxenException
 127  
     {
 128  2
         Object result = super.evaluate( node );
 129  
 
 130  2
         if ( result instanceof Element )
 131  
         {
 132  0
             return ((Element)result).getObject();
 133  
         }
 134  2
         else if ( result instanceof Collection )
 135  
         {
 136  2
             List newList = new ArrayList();
 137  
 
 138  2
             for ( Iterator listIter = ((Collection)result).iterator();
 139  8
                   listIter.hasNext(); )
 140  
             {
 141  6
                 Object member = listIter.next();
 142  
 
 143  6
                 if ( member instanceof Element )
 144  
                 {
 145  6
                     newList.add( ((Element)member).getObject() );
 146  6
                 }
 147  
                 else
 148  
                 {
 149  0
                     newList.add( member );
 150  
                 }
 151  6
             }
 152  
 
 153  2
             return newList;
 154  
         }
 155  
 
 156  0
         return result;
 157  
     }
 158  
 }