Coverage Report - org.jaxen.expr.DefaultRelationalExpr

Classes in this File Line Coverage Branch Coverage Complexity
DefaultRelationalExpr
79% 
100% 
3.667

 1  
 /*
 2  
  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultRelationalExpr.java,v 1.13 2005/06/28 13:44:44 elharo Exp $
 3  
  * $Revision: 1.13 $
 4  
  * $Date: 2005/06/28 13:44:44 $
 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: DefaultRelationalExpr.java,v 1.13 2005/06/28 13:44:44 elharo Exp $
 60  
  */
 61  
 
 62  
 
 63  
 
 64  
 package org.jaxen.expr;
 65  
 
 66  
 import java.util.Iterator;
 67  
 import java.util.List;
 68  
 import org.jaxen.Context;
 69  
 import org.jaxen.JaxenException;
 70  
 import org.jaxen.Navigator;
 71  
 import org.jaxen.function.NumberFunction;
 72  
 
 73  
 abstract class DefaultRelationalExpr extends DefaultTruthExpr implements RelationalExpr 
 74  
   {
 75  
   DefaultRelationalExpr( Expr lhs, Expr rhs )
 76  
     {
 77  600
     super( lhs, rhs );
 78  600
     }
 79  
   
 80  
   public String toString()
 81  
     {
 82  0
     return "[(DefaultRelationalExpr): " + getLHS() + ", " + getRHS() + "]";
 83  
     }
 84  
 
 85  
   public Object evaluate( Context context ) throws JaxenException
 86  
     {
 87  1182
     Object lhsValue = getLHS().evaluate( context );
 88  1182
     Object rhsValue = getRHS().evaluate( context );
 89  1182
     Navigator nav = context.getNavigator();
 90  
 
 91  1182
     if( bothAreSets( lhsValue, rhsValue ) )
 92  
       {
 93  0
       return evaluateSetSet( (List) lhsValue, (List) rhsValue, nav );
 94  
       }
 95  
 
 96  1182
     if( eitherIsSet( lhsValue, rhsValue ) )
 97  
       {
 98  144
       if( isSet( lhsValue ) )
 99  
         {        
 100  0
         return evaluateSetSet( (List) lhsValue, convertToList( rhsValue ), nav );              
 101  
         }
 102  
       else
 103  
         {
 104  144
         return evaluateSetSet( convertToList( lhsValue ), (List) rhsValue, nav );              
 105  
         }
 106  
       }
 107  
     
 108  1038
     return evaluateObjectObject( lhsValue, rhsValue, nav ) ? Boolean.TRUE : Boolean.FALSE;
 109  
     }
 110  
 
 111  
   private Object evaluateSetSet( List lhsSet, List rhsSet, Navigator nav )
 112  
     {
 113  144
     if( setIsEmpty( lhsSet ) || setIsEmpty( rhsSet ) ) // return false if either is null or empty
 114  
       {
 115  0
       return Boolean.FALSE;
 116  
       }    
 117  
     
 118  144
     for( Iterator lhsIterator = lhsSet.iterator(); lhsIterator.hasNext(); )
 119  
       {
 120  144
       Object lhs = lhsIterator.next();        
 121  
       
 122  144
       for( Iterator rhsIterator = rhsSet.iterator(); rhsIterator.hasNext(); )
 123  
         {
 124  720
         Object rhs = rhsIterator.next();
 125  
         
 126  720
         if( evaluateObjectObject( lhs, rhs, nav ) )
 127  
           {
 128  96
           return Boolean.TRUE;
 129  
           }
 130  
         }
 131  
       }      
 132  
     
 133  48
     return Boolean.FALSE;
 134  
     }
 135  
   
 136  
   private boolean evaluateObjectObject( Object lhs, Object rhs, Navigator nav )
 137  
     {
 138  1758
     if( lhs == null || rhs == null )
 139  
       {
 140  0
       return false;
 141  
       }
 142  
     
 143  1758
     Double lhsNum = NumberFunction.evaluate( lhs, nav );
 144  1758
     Double rhsNum = NumberFunction.evaluate( rhs, nav );      
 145  
     
 146  1758
     if( NumberFunction.isNaN( lhsNum ) || NumberFunction.isNaN( rhsNum ) )
 147  
       {
 148  0
       return false;
 149  
       }
 150  
     
 151  1758
     return evaluateDoubleDouble( lhsNum, rhsNum );
 152  
     }
 153  
   
 154  
   protected abstract boolean evaluateDoubleDouble( Double lhs, Double rhs );    
 155  
   }
 156