Coverage Report - org.jaxen.expr.DefaultUnionExpr

Classes in this File Line Coverage Branch Coverage Complexity
DefaultUnionExpr
86% 
100% 
2

 1  
 /*
 2  
  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultUnionExpr.java,v 1.14 2005/09/06 13:41:01 elharo Exp $
 3  
  * $Revision: 1.14 $
 4  
  * $Date: 2005/09/06 13:41:01 $
 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: DefaultUnionExpr.java,v 1.14 2005/09/06 13:41:01 elharo Exp $
 60  
  */
 61  
 
 62  
 
 63  
 
 64  
 package org.jaxen.expr;
 65  
 
 66  
 import java.util.ArrayList;
 67  
 import java.util.Collections;
 68  
 import java.util.HashSet;
 69  
 import java.util.Iterator;
 70  
 import java.util.List;
 71  
 import java.util.Set;
 72  
 import org.jaxen.Context;
 73  
 import org.jaxen.JaxenException;
 74  
 import org.jaxen.XPathSyntaxException;
 75  
 
 76  
 /**
 77  
  * @deprecated this class will become non-public in the future;
 78  
  *     use the interface instead
 79  
  */
 80  
 public class DefaultUnionExpr extends DefaultBinaryExpr implements UnionExpr
 81  
 {
 82  
     public DefaultUnionExpr(Expr lhs,
 83  
                             Expr rhs)
 84  
     {
 85  120
         super( lhs,
 86  
                rhs );
 87  120
     }
 88  
 
 89  
     public String getOperator()
 90  
     {
 91  36
         return "|";
 92  
     }
 93  
 
 94  
     public String toString()
 95  
     {
 96  0
         return "[(DefaultUnionExpr): " + getLHS() + ", " + getRHS() + "]";
 97  
     }
 98  
 
 99  
     public Object evaluate(Context context) throws JaxenException
 100  
     {
 101  90
         List results = new ArrayList();
 102  
 
 103  
         try {
 104  90
             List lhsResults = (List) getLHS().evaluate( context );
 105  60
             List rhsResults = (List) getRHS().evaluate( context );
 106  
     
 107  54
             Set unique = new HashSet();
 108  
     
 109  54
             results.addAll( lhsResults );
 110  54
             unique.addAll( lhsResults );
 111  
     
 112  54
             Iterator rhsIter = rhsResults.iterator();
 113  
     
 114  168
             while ( rhsIter.hasNext() )
 115  
             {
 116  114
                 Object each = rhsIter.next();
 117  
     
 118  114
                 if ( ! unique.contains( each ) )
 119  
                 {
 120  84
                     results.add( each );
 121  84
                     unique.add( each );
 122  
                 }
 123  
             }
 124  
             
 125  54
             Collections.sort(results, new NodeComparator(context.getNavigator()));
 126  
     
 127  54
             return results;
 128  
         }
 129  36
         catch (ClassCastException e) {
 130  36
             throw new XPathSyntaxException(this.getText(), context.getPosition(), "Unions are only allowed over node-sets");
 131  
         }
 132  
     }
 133  
     
 134  
     public void accept(Visitor visitor)
 135  
     {
 136  0
         visitor.visit(this);
 137  0
     }
 138  
     
 139  
 }
 140