Coverage Report - org.jaxen.function.LocalNameFunction

Classes in this File Line Coverage Branch Coverage Complexity
LocalNameFunction
100% 
100% 
8.667

 1  
 /*
 2  
  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/function/LocalNameFunction.java,v 1.13 2005/06/28 13:44:45 elharo Exp $
 3  
  * $Revision: 1.13 $
 4  
  * $Date: 2005/06/28 13:44:45 $
 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: LocalNameFunction.java,v 1.13 2005/06/28 13:44:45 elharo Exp $
 60  
  */
 61  
 
 62  
 
 63  
 package org.jaxen.function;
 64  
 
 65  
 import java.util.List;
 66  
 
 67  
 import org.jaxen.Context;
 68  
 import org.jaxen.Function;
 69  
 import org.jaxen.FunctionCallException;
 70  
 import org.jaxen.Navigator;
 71  
 
 72  
 /**
 73  
  *   <p><b>4.1</b> <code><i>string</i> local-name(<i>node-set?</i>)</code></p> 
 74  
  *  
 75  
  * 
 76  
  * <blockquote src="http://www.w3.org/TR/xpath">
 77  
  * The <b>local-name</b> function returns the local part of the 
 78  
  * expanded-name of the node in the argument node-set that is first in document order. 
 79  
  * If the argument node-set is empty or the first node has no expanded-name, an 
 80  
  * empty string is returned. If the argument is omitted, it defaults to a node-set with the context node as its only member.
 81  
  *
 82  
  * </blockquote>
 83  
  * 
 84  
  * @author bob mcwhirter (bob @ werken.com)
 85  
  * @see <a href="http://www.w3.org/TR/xpath#function-local-name" target="_top">Section 4.1 of the XPath Specification</a>
 86  
  */
 87  
 public class LocalNameFunction implements Function
 88  
 {
 89  
     
 90  
     /**
 91  
      * Create a new <code>LocalNameFunction</code> object.
 92  
      */
 93  294
     public LocalNameFunction() {}
 94  
     
 95  
     /**
 96  
      * Returns the local-name of the specified node or the context node if 
 97  
      * no arguments are provided.
 98  
      * 
 99  
      * @param context the context at the point in the
 100  
      *         expression where the function is called
 101  
      * @param args a <code>List</code> containing zero or one items
 102  
      * 
 103  
      * @return a <code>String</code> containing the local-name
 104  
      * 
 105  
      * @throws FunctionCallException if <code>args</code> has more than one item
 106  
      */
 107  
     public Object call(Context context,
 108  
                        List args) throws FunctionCallException
 109  
     {
 110  5820
         if ( args.size() == 0 )
 111  
         {
 112  5748
             return evaluate( context.getNodeSet(),
 113  
                              context.getNavigator() ); 
 114  
         }
 115  
 
 116  72
         if ( args.size() == 1 )
 117  
         {
 118  66
             return evaluate( args,
 119  
                              context.getNavigator() );
 120  
         }
 121  
 
 122  6
         throw new FunctionCallException( "local-name() requires zero or one argument." );
 123  
     }
 124  
 
 125  
     /**
 126  
      * Returns the local-name of <code>list.get(0)</code>
 127  
      * 
 128  
      * @param list a list of nodes
 129  
      * @param nav the <code>Navigator</code> used to retrieve the local name
 130  
      * 
 131  
      * @return the local-name of <code>list.get(0)</code>
 132  
      * 
 133  
      * @throws FunctionCallException if <code>list.get(0)</code> is not a node
 134  
      */
 135  
     public static String evaluate(List list,
 136  
                                   Navigator nav) throws FunctionCallException
 137  
     {
 138  5874
         if ( ! list.isEmpty() )
 139  
         {            
 140  5868
             Object first = list.get(0);
 141  
 
 142  5868
             if (first instanceof List)
 143  
             {
 144  60
                 return evaluate( (List) first,
 145  
                                  nav );
 146  
             }
 147  5808
             else if ( nav.isElement( first ) )
 148  
             {
 149  5766
                 return nav.getElementName( first );
 150  
             }
 151  42
             else if ( nav.isAttribute( first ) )
 152  
             {
 153  6
                 return nav.getAttributeName( first );
 154  
             }
 155  36
             else if ( nav.isProcessingInstruction( first ) )
 156  
             {
 157  6
                 return nav.getProcessingInstructionTarget( first );
 158  
             }
 159  30
             else if ( nav.isNamespace( first ) )
 160  
             {
 161  6
                 return nav.getNamespacePrefix( first );
 162  
             }
 163  24
             else if ( nav.isDocument( first ) )
 164  
             {
 165  6
                 return "";
 166  
             }
 167  18
             else if ( nav.isComment( first ) )
 168  
             {
 169  6
                 return "";
 170  
             }
 171  12
             else if ( nav.isText( first ) )
 172  
             {
 173  6
                 return "";
 174  
             }
 175  
             else {
 176  6
                 throw new FunctionCallException("The argument to the local-name function must be a node-set");   
 177  
             }
 178  
         }
 179  
 
 180  6
         return "";
 181  
     }
 182  
     
 183  
 }
 184