Coverage Report - org.jaxen.expr.DefaultEqualityExpr
 
Classes in this File Line Coverage Branch Coverage Complexity
DefaultEqualityExpr
94%
29/31
100%
11/11
4
 
 1  
 /*
 2  
  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultEqualityExpr.java,v 1.14 2006/02/05 21:47:40 elharo Exp $
 3  
  * $Revision: 1.14 $
 4  
  * $Date: 2006/02/05 21:47:40 $
 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: DefaultEqualityExpr.java,v 1.14 2006/02/05 21:47:40 elharo Exp $
 46  
  */
 47  
 
 48  
 
 49  
 
 50  
 package org.jaxen.expr;
 51  
 
 52  
 import java.util.Iterator;
 53  
 import java.util.List;
 54  
 import org.jaxen.Context;
 55  
 import org.jaxen.JaxenException;
 56  
 import org.jaxen.Navigator;
 57  
 import org.jaxen.function.BooleanFunction;
 58  
 import org.jaxen.function.NumberFunction;
 59  
 import org.jaxen.function.StringFunction;
 60  
 
 61  
 abstract class DefaultEqualityExpr extends DefaultTruthExpr implements EqualityExpr 
 62  
   {
 63  
   DefaultEqualityExpr( Expr lhs, Expr rhs )
 64  
     {
 65  1254
     super( lhs, rhs );
 66  1254
     }
 67  
 
 68  
   public String toString()
 69  
     {
 70  0
     return "[(DefaultEqualityExpr): " + getLHS() + ", " + getRHS() + "]";
 71  
     }
 72  
   
 73  
   public Object evaluate( Context context ) throws JaxenException
 74  
     {
 75  5892
     Object lhsValue = getLHS().evaluate( context );
 76  5892
     Object rhsValue = getRHS().evaluate( context );
 77  
     
 78  5888
     if( lhsValue == null || rhsValue == null )
 79  
       {
 80  0
       return Boolean.FALSE;
 81  
       }
 82  
     
 83  5888
     Navigator nav = context.getNavigator();
 84  
 
 85  5888
     if( bothAreSets( lhsValue, rhsValue ) )
 86  
       {
 87  22
       return evaluateSetSet( (List) lhsValue, (List) rhsValue, nav );
 88  
       }
 89  5866
     else if ( eitherIsSet( lhsValue, rhsValue ) )
 90  
       {
 91  3642
       if ( isSet( lhsValue ) )
 92  
         {
 93  3586
         return evaluateSetSet( (List) lhsValue, convertToList( rhsValue ), nav );                
 94  
         }
 95  
       else
 96  
         {
 97  56
         return evaluateSetSet( convertToList( lhsValue ), (List) rhsValue, nav );                                
 98  
         }
 99  
       }  
 100  
     else
 101  
       {
 102  2224
       return evaluateObjectObject( lhsValue, rhsValue, nav ) ? Boolean.TRUE : Boolean.FALSE;
 103  
       }    
 104  
     }
 105  
   
 106  
   private Boolean evaluateSetSet( List lhsSet, List rhsSet, Navigator nav )
 107  
     {
 108  3664
     if( setIsEmpty( lhsSet ) || setIsEmpty( rhsSet ) )
 109  
       {
 110  1780
       return Boolean.FALSE;
 111  
       }
 112  
     
 113  1884
     for( Iterator lhsIterator = lhsSet.iterator(); lhsIterator.hasNext(); )
 114  
       {
 115  2036
       Object lhs = lhsIterator.next();
 116  
       
 117  2036
       for( Iterator rhsIterator = rhsSet.iterator(); rhsIterator.hasNext(); )
 118  
         {
 119  2036
         Object rhs = rhsIterator.next();
 120  
         
 121  2036
         if( evaluateObjectObject( lhs, rhs, nav ) )
 122  
           {
 123  372
           return Boolean.TRUE;
 124  
           }
 125  1664
         }
 126  1664
       }
 127  
     
 128  1512
     return Boolean.FALSE;
 129  
     }
 130  
   
 131  
   private boolean evaluateObjectObject( Object lhs, Object rhs, Navigator nav )
 132  
     {
 133  4260
     if( eitherIsBoolean( lhs, rhs ) )
 134  
       {            
 135  80
       return evaluateObjectObject( BooleanFunction.evaluate( lhs, nav ),
 136  
                                    BooleanFunction.evaluate( rhs, nav ) );
 137  
       }
 138  4180
     else if( eitherIsNumber( lhs, rhs ) )
 139  
       {
 140  270
       return evaluateObjectObject( NumberFunction.evaluate( lhs,
 141  
                                                             nav ),
 142  
                                    NumberFunction.evaluate( rhs,
 143  
                                                             nav ) );                                              
 144  
       }
 145  
     else
 146  
       {
 147  3910
       return evaluateObjectObject( StringFunction.evaluate( lhs,
 148  
                                                             nav ),
 149  
                                    StringFunction.evaluate( rhs,
 150  
                                                             nav ) );
 151  
       }
 152  
     }
 153  
   
 154  
   protected abstract boolean evaluateObjectObject( Object lhs, Object rhs );
 155  
   }