Coverage Report

Coverage Report - org.jaxen.expr.DefaultEqualityExpr

Classes in this File

Line Coverage

Branch Coverage

Complexity

DefaultEqualityExpr

93%

52/56

96%

22/23

4.667

 /*
  * $Header$
  * $Revision: 1332 $
  * $Date: 2008-10-18 06:29:28 -0700 (Sat, 18 Oct 2008) $
  *
  * ====================================================================
  *
  * Copyright 2000-2002 bob mcwhirter & James Strachan.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  * 
  *   * Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 
  *   * Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  * 
  *   * Neither the name of the Jaxen Project nor the names of its
  *     contributors may be used to endorse or promote products derived 
  *     from this software without specific prior written permission.
  * 
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * ====================================================================
  * This software consists of voluntary contributions made by many 
  * individuals on behalf of the Jaxen Project and was originally 
  * created by bob mcwhirter <bob@werken.com> and 
  * James Strachan <jstrachan@apache.org>.  For more information on the 
  * Jaxen Project, please see <http://www.jaxen.org/>.
  * 
  * $Id: DefaultEqualityExpr.java 1332 2008-10-18 13:29:28Z elharo $
  */
 
 package org.jaxen.expr;
 
 import java.util.Iterator;
 import java.util.List;
 import org.jaxen.Context;
 import org.jaxen.JaxenException;
 import org.jaxen.Navigator;
 import org.jaxen.function.BooleanFunction;
 import org.jaxen.function.NumberFunction;
 import org.jaxen.function.StringFunction;
 
 abstract class DefaultEqualityExpr extends DefaultTruthExpr implements EqualityExpr 
   {
   DefaultEqualityExpr( Expr lhs, Expr rhs )
     {
     super( lhs, rhs );
     }
 
   public String toString()
     {
     return "[(DefaultEqualityExpr): " + getLHS() + ", " + getRHS() + "]";
     }
   
   public Object evaluate( Context context ) throws JaxenException
     {
     Object lhsValue = getLHS().evaluate( context );
     Object rhsValue = getRHS().evaluate( context );
     
     if( lhsValue == null || rhsValue == null ) {
       return Boolean.FALSE;
     }
     
     Navigator nav = context.getNavigator();
 
     if( bothAreSets(lhsValue, rhsValue) ) {
       return evaluateSetSet( (List) lhsValue, (List) rhsValue, nav );
     }
     else if (isSet(lhsValue ) && isBoolean(rhsValue)) {
         Boolean lhsBoolean = ((List) lhsValue).isEmpty() ? Boolean.FALSE : Boolean.TRUE;
         Boolean rhsBoolean = (Boolean) rhsValue;
         return Boolean.valueOf(evaluateObjectObject( lhsBoolean, rhsBoolean, nav ) );
     }
     else if (isBoolean(lhsValue ) && isSet(rhsValue)) {
         Boolean lhsBoolean = (Boolean) lhsValue;
         Boolean rhsBoolean = ((List) rhsValue).isEmpty() ? Boolean.FALSE : Boolean.TRUE;
         return Boolean.valueOf(evaluateObjectObject( lhsBoolean, rhsBoolean, nav ) );
     }
     else if (eitherIsSet(lhsValue, rhsValue) ) {
       if (isSet(lhsValue)) {
         return evaluateSetSet( (List) lhsValue, convertToList(rhsValue), nav );                
       }
       else {
         return evaluateSetSet( convertToList(lhsValue), (List) rhsValue, nav );                                
       }
     }  
     else {
       return Boolean.valueOf(evaluateObjectObject( lhsValue, rhsValue, nav ) );
     }    
   }
   
   private Boolean evaluateSetSet( List lhsSet, List rhsSet, Navigator nav )
     {
       /* If both objects to be compared are node-sets, then the comparison will be 
        * true if and only if there is a node in the first node-set and a node in 
        * the second node-set such that the result of performing the comparison on 
        * the string-values of the two nodes is true */
       if( setIsEmpty( lhsSet ) || setIsEmpty( rhsSet ) ) {
             return Boolean.FALSE;
       }
     
     for( Iterator lhsIterator = lhsSet.iterator(); lhsIterator.hasNext(); )
       {
       Object lhs = lhsIterator.next();
       
       for( Iterator rhsIterator = rhsSet.iterator(); rhsIterator.hasNext(); )
         {
         Object rhs = rhsIterator.next();
         
         if( evaluateObjectObject( lhs, rhs, nav ) )
           {
           return Boolean.TRUE;
           }
         }
       }
     
     return Boolean.FALSE;
     }
   
   private boolean evaluateObjectObject( Object lhs, Object rhs, Navigator nav )
     {
     if( eitherIsBoolean( lhs, rhs ) )
       {            
       return evaluateObjectObject( BooleanFunction.evaluate( lhs, nav ),
                                    BooleanFunction.evaluate( rhs, nav ) );
       }
     else if( eitherIsNumber( lhs, rhs ) )
       {
       return evaluateObjectObject( NumberFunction.evaluate( lhs,
                                                             nav ),
                                    NumberFunction.evaluate( rhs,
                                                             nav ) );                                              
       }
     else
       {
       return evaluateObjectObject( StringFunction.evaluate( lhs,
                                                             nav ),
                                    StringFunction.evaluate( rhs,
                                                             nav ) );
       }
     }
   
   protected abstract boolean evaluateObjectObject( Object lhs, Object rhs );
   }

1		/*
2		* $Header$
3		* $Revision: 1332 $
4		* $Date: 2008-10-18 06:29:28 -0700 (Sat, 18 Oct 2008) $
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 1332 2008-10-18 13:29:28Z elharo $
46		*/
47
48		package org.jaxen.expr;
49
50		import java.util.Iterator;
51		import java.util.List;
52		import org.jaxen.Context;
53		import org.jaxen.JaxenException;
54		import org.jaxen.Navigator;
55		import org.jaxen.function.BooleanFunction;
56		import org.jaxen.function.NumberFunction;
57		import org.jaxen.function.StringFunction;
58
59		abstract class DefaultEqualityExpr extends DefaultTruthExpr implements EqualityExpr
60		{
61		DefaultEqualityExpr( Expr lhs, Expr rhs )
62		{
63	2548	super( lhs, rhs );
64	2548	}
65	627
66	627	public String toString()
67		{
68	0	return "[(DefaultEqualityExpr): " + getLHS() + ", " + getRHS() + "]";
69		}
70	0
71		public Object evaluate( Context context ) throws JaxenException
72		{
73	11824	Object lhsValue = getLHS().evaluate( context );
74	11824	Object rhsValue = getRHS().evaluate( context );
75	2946
76	14762	if( lhsValue == null \|\| rhsValue == null ) {
77	0	return Boolean.FALSE;
78	2944	}
79
80	11816	Navigator nav = context.getNavigator();
81
82	11816	if( bothAreSets(lhsValue, rhsValue) ) {
83	2996	return evaluateSetSet( (List) lhsValue, (List) rhsValue, nav );
84		}
85	14708	else if (isSet(lhsValue ) && isBoolean(rhsValue)) {
86	16	Boolean lhsBoolean = ((List) lhsValue).isEmpty() ? Boolean.FALSE : Boolean.TRUE;
87	27	Boolean rhsBoolean = (Boolean) rhsValue;
88	16	return Boolean.valueOf(evaluateObjectObject( lhsBoolean, rhsBoolean, nav ) );
89	2933	}
90	11748	else if (isBoolean(lhsValue ) && isSet(rhsValue)) {
91	1821	Boolean lhsBoolean = (Boolean) lhsValue;
92	0	Boolean rhsBoolean = ((List) rhsValue).isEmpty() ? Boolean.FALSE : Boolean.TRUE;
93	1793	return Boolean.valueOf(evaluateObjectObject( lhsBoolean, rhsBoolean, nav ) );
94		}
95	11748	else if (eitherIsSet(lhsValue, rhsValue) ) {
96	7300	if (isSet(lhsValue)) {
97	7216	return evaluateSetSet( (List) lhsValue, convertToList(rhsValue), nav );
98		}
99		else {
100	112	return evaluateSetSet( convertToList(lhsValue), (List) rhsValue, nav );
101		}
102	1112	}
103		else {
104	4448	return Boolean.valueOf(evaluateObjectObject( lhsValue, rhsValue, nav ) );
105		}
106		}
107
108	1832	private Boolean evaluateSetSet( List lhsSet, List rhsSet, Navigator nav )
109		{
110	890	/* If both objects to be compared are node-sets, then the comparison will be
111		* true if and only if there is a node in the first node-set and a node in
112		* the second node-set such that the result of performing the comparison on
113	942	* the string-values of the two nodes is true */
114	7352	if( setIsEmpty( lhsSet ) \|\| setIsEmpty( rhsSet ) ) {
115	4578	return Boolean.FALSE;
116		}
117	1018
118	3792	for( Iterator lhsIterator = lhsSet.iterator(); lhsIterator.hasNext(); )
119	1018	{
120	4112	Object lhs = lhsIterator.next();
121	1018
122	4112	for( Iterator rhsIterator = rhsSet.iterator(); rhsIterator.hasNext(); )
123	186	{
124	4128	Object rhs = rhsIterator.next();
125	832
126	4960	if( evaluateObjectObject( lhs, rhs, nav ) )
127		{
128	1524	return Boolean.TRUE;
129		}
130	3360	}
131	3344	}
132
133	5154	return Boolean.FALSE;
134		}
135	40
136		private boolean evaluateObjectObject( Object lhs, Object rhs, Navigator nav )
137		{
138	10682	if( eitherIsBoolean( lhs, rhs ) )
139		{
140	311	return evaluateObjectObject( BooleanFunction.evaluate( lhs, nav ),
141		BooleanFunction.evaluate( rhs, nav ) );
142		}
143	8416	else if( eitherIsNumber( lhs, rhs ) )
144		{
145	552	return evaluateObjectObject( NumberFunction.evaluate( lhs,
146		nav ),
147	1955	NumberFunction.evaluate( rhs,
148		nav ) );
149		}
150		else
151		{
152	7864	return evaluateObjectObject( StringFunction.evaluate( lhs,
153		nav ),
154		StringFunction.evaluate( rhs,
155		nav ) );
156		}
157		}
158
159		protected abstract boolean evaluateObjectObject( Object lhs, Object rhs );
160		}