Coverage Report - org.jaxen.function.LocalNameFunction
 
Classes in this File Line Coverage Branch Coverage Complexity
LocalNameFunction
100%
26/26
100%
11/11
8.667
 
 1  
 /*
 2  
  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/function/LocalNameFunction.java,v 1.14 2006/02/05 21:47:41 elharo Exp $
 3  
  * $Revision: 1.14 $
 4  
  * $Date: 2006/02/05 21:47:41 $
 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: LocalNameFunction.java,v 1.14 2006/02/05 21:47:41 elharo Exp $
 46  
  */
 47  
 
 48  
 
 49  
 package org.jaxen.function;
 50  
 
 51  
 import java.util.List;
 52  
 
 53  
 import org.jaxen.Context;
 54  
 import org.jaxen.Function;
 55  
 import org.jaxen.FunctionCallException;
 56  
 import org.jaxen.Navigator;
 57  
 
 58  
 /**
 59  
  *   <p><b>4.1</b> <code><i>string</i> local-name(<i>node-set?</i>)</code></p> 
 60  
  *  
 61  
  * 
 62  
  * <blockquote src="http://www.w3.org/TR/xpath">
 63  
  * The <b>local-name</b> function returns the local part of the 
 64  
  * expanded-name of the node in the argument node-set that is first in document order. 
 65  
  * If the argument node-set is empty or the first node has no expanded-name, an 
 66  
  * empty string is returned. If the argument is omitted, it defaults to a node-set with the context node as its only member.
 67  
  *
 68  
  * </blockquote>
 69  
  * 
 70  
  * @author bob mcwhirter (bob @ werken.com)
 71  
  * @see <a href="http://www.w3.org/TR/xpath#function-local-name" target="_top">Section 4.1 of the XPath Specification</a>
 72  
  */
 73  
 public class LocalNameFunction implements Function
 74  
 {
 75  
     
 76  
     /**
 77  
      * Create a new <code>LocalNameFunction</code> object.
 78  
      */
 79  106
     public LocalNameFunction() {}
 80  
     
 81  
     /**
 82  
      * Returns the local-name of the specified node or the context node if 
 83  
      * no arguments are provided.
 84  
      * 
 85  
      * @param context the context at the point in the
 86  
      *         expression where the function is called
 87  
      * @param args a <code>List</code> containing zero or one items
 88  
      * 
 89  
      * @return a <code>String</code> containing the local-name
 90  
      * 
 91  
      * @throws FunctionCallException if <code>args</code> has more than one item
 92  
      */
 93  
     public Object call(Context context,
 94  
                        List args) throws FunctionCallException
 95  
     {
 96  1940
         if ( args.size() == 0 )
 97  
         {
 98  1916
             return evaluate( context.getNodeSet(),
 99  
                              context.getNavigator() ); 
 100  
         }
 101  
 
 102  24
         if ( args.size() == 1 )
 103  
         {
 104  22
             return evaluate( args,
 105  
                              context.getNavigator() );
 106  
         }
 107  
 
 108  2
         throw new FunctionCallException( "local-name() requires zero or one argument." );
 109  
     }
 110  
 
 111  
     /**
 112  
      * Returns the local-name of <code>list.get(0)</code>
 113  
      * 
 114  
      * @param list a list of nodes
 115  
      * @param nav the <code>Navigator</code> used to retrieve the local name
 116  
      * 
 117  
      * @return the local-name of <code>list.get(0)</code>
 118  
      * 
 119  
      * @throws FunctionCallException if <code>list.get(0)</code> is not a node
 120  
      */
 121  
     public static String evaluate(List list,
 122  
                                   Navigator nav) throws FunctionCallException
 123  
     {
 124  1958
         if ( ! list.isEmpty() )
 125  
         {            
 126  1956
             Object first = list.get(0);
 127  
 
 128  1956
             if (first instanceof List)
 129  
             {
 130  20
                 return evaluate( (List) first,
 131  
                                  nav );
 132  
             }
 133  1936
             else if ( nav.isElement( first ) )
 134  
             {
 135  1922
                 return nav.getElementName( first );
 136  
             }
 137  14
             else if ( nav.isAttribute( first ) )
 138  
             {
 139  2
                 return nav.getAttributeName( first );
 140  
             }
 141  12
             else if ( nav.isProcessingInstruction( first ) )
 142  
             {
 143  2
                 return nav.getProcessingInstructionTarget( first );
 144  
             }
 145  10
             else if ( nav.isNamespace( first ) )
 146  
             {
 147  2
                 return nav.getNamespacePrefix( first );
 148  
             }
 149  8
             else if ( nav.isDocument( first ) )
 150  
             {
 151  2
                 return "";
 152  
             }
 153  6
             else if ( nav.isComment( first ) )
 154  
             {
 155  2
                 return "";
 156  
             }
 157  4
             else if ( nav.isText( first ) )
 158  
             {
 159  2
                 return "";
 160  
             }
 161  
             else {
 162  2
                 throw new FunctionCallException("The argument to the local-name function must be a node-set");   
 163  
             }
 164  
         }
 165  
 
 166  2
         return "";
 167  
     }
 168  
     
 169  
 }
 170