Coverage Report - org.jaxen.function.ext.MatrixConcatFunction

Classes in this File Line Coverage Branch Coverage Complexity
MatrixConcatFunction
4% 
0% 
3.5

 1  
 /*
 2  
  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/function/ext/MatrixConcatFunction.java,v 1.5 2005/06/28 13:44:45 elharo Exp $
 3  
  * $Revision: 1.5 $
 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: MatrixConcatFunction.java,v 1.5 2005/06/28 13:44:45 elharo Exp $
 60  
  */
 61  
 
 62  
 package org.jaxen.function.ext;
 63  
 
 64  
 import java.util.ArrayList;
 65  
 import java.util.Enumeration;
 66  
 import java.util.Iterator;
 67  
 import java.util.List;
 68  
 
 69  
 import org.jaxen.Context;
 70  
 import org.jaxen.Function;
 71  
 import org.jaxen.Navigator;
 72  
 import org.jaxen.function.StringFunction;
 73  
 
 74  
 /** <p><b>Extension Function</b> <code><i>boolean</i> matrix-concat(<i>nodeSet</i>,<i>nodeSet</i>,<i>nodeSet*</i>)</code> 
 75  
   * 
 76  
   * @author James Pereira (JPereira@CT.BBD.CO.ZA)
 77  
   */
 78  
 
 79  288
 public class MatrixConcatFunction implements Function {
 80  
     
 81  
     public Object call(Context context, List args) {
 82  0
         if ( args.size() >= 2 ) {
 83  0
             return evaluate(args, context.getNavigator());
 84  
         }
 85  0
         return null;
 86  
     }
 87  
     
 88  
     public static Object evaluate(List list, Navigator nav) {        
 89  0
         ArrayList matrix = new ArrayList();       
 90  
         
 91  0
         Iterator argIter = list.iterator();
 92  
 
 93  0
         while (argIter.hasNext()) {
 94  0
             ArrayList v = new ArrayList();
 95  0
             Object obj = argIter.next();
 96  0
             if (obj instanceof List) {
 97  0
                 List args = (List) obj;
 98  0
                 for ( int i = 0, size = args.size(); i < size; i++ ) {
 99  0
                     v.add( StringFunction.evaluate( args.get(i), nav ) );
 100  
                 }
 101  
             }
 102  
             else {
 103  0
                 v.add( StringFunction.evaluate( obj, nav ) );
 104  
             }
 105  0
             matrix.add(v);
 106  
         }
 107  
         
 108  0
         ArrayList result = new ArrayList();
 109  0
         Enumeration elemList = new MatrixEnum( matrix );
 110  0
         while (elemList.hasMoreElements()) {
 111  0
             Object obj = elemList.nextElement();
 112  0
             if (obj instanceof List) {
 113  0
                 StringBuffer text = new StringBuffer(127);
 114  0
                 List args = (List) obj;
 115  0
                 for (Iterator it = args.iterator(); it.hasNext(); ) {
 116  0
                     text.append(it.next());
 117  
                 }
 118  0
                 result.add( text.toString() );
 119  
             }
 120  
             else {
 121  0
                 result.add( obj );
 122  
             }
 123  
         }
 124  0
         return result;
 125  
     }
 126  
     
 127  288
     public static class MatrixEnum implements Enumeration {
 128  
         private ArrayList m_source;
 129  0
         private int m_maxSize = 0;
 130  0
         private int m_currIdx = -1;
 131  
         
 132  0
         public MatrixEnum (ArrayList _source) {
 133  0
             m_source = _source;
 134  
             
 135  0
             for ( Iterator iter = m_source.iterator(); iter.hasNext(); ) {
 136  0
                 ArrayList element = (ArrayList) iter.next();
 137  0
                 int size = element.size();
 138  0
                 if (size > m_maxSize) {
 139  0
                     m_maxSize = size;
 140  
                 }
 141  
             }
 142  0
         }
 143  
         
 144  0
         public MatrixEnum (ArrayList _source, int _maxSize) {
 145  0
             m_source = _source;
 146  0
             m_maxSize = _maxSize;
 147  0
         }
 148  
         
 149  
         public boolean hasMoreElements() {
 150  0
             if ((m_maxSize != 0) && (++m_currIdx < m_maxSize)) {
 151  0
                 return true;
 152  
             }
 153  
             else {
 154  0
                 return false;
 155  
             }
 156  
         }
 157  
         
 158  
         public Object nextElement() {
 159  0
             ArrayList result = new ArrayList();
 160  0
             for ( Iterator iter = m_source.iterator(); iter.hasNext(); ) {
 161  0
                 ArrayList element = (ArrayList) iter.next();
 162  0
                 int size = element.size();
 163  0
                 if ( m_currIdx < size ) {
 164  0
                     result.add( element.get( m_currIdx ) );
 165  
                 }
 166  
                 else {
 167  0
                     if ( size > 0 ) {
 168  0
                         result.add( element.get( size - 1 ) );
 169  
                     }
 170  
                     else {
 171  
                         // XXXX: what to do now?
 172  0
                         result.add( "" );
 173  
                     }
 174  
                 }
 175  
             }
 176  0
             return result;
 177  
         }
 178  
     }
 179  
 }