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package org.jaxen.expr; |
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|
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import java.util.Iterator; |
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import java.util.List; |
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import org.jaxen.Context; |
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import org.jaxen.JaxenException; |
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import org.jaxen.Navigator; |
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import org.jaxen.function.BooleanFunction; |
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import org.jaxen.function.NumberFunction; |
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import org.jaxen.function.StringFunction; |
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|
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abstract class DefaultEqualityExpr extends DefaultTruthExpr implements EqualityExpr |
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{ |
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DefaultEqualityExpr( Expr lhs, Expr rhs ) |
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{ |
65 | 1254 | super( lhs, rhs ); |
66 | 1254 | } |
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|
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public String toString() |
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{ |
70 | 0 | return "[(DefaultEqualityExpr): " + getLHS() + ", " + getRHS() + "]"; |
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} |
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|
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public Object evaluate( Context context ) throws JaxenException |
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{ |
75 | 5892 | Object lhsValue = getLHS().evaluate( context ); |
76 | 5892 | Object rhsValue = getRHS().evaluate( context ); |
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|
78 | 5888 | if( lhsValue == null || rhsValue == null ) |
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{ |
80 | 0 | return Boolean.FALSE; |
81 | |
} |
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|
83 | 5888 | Navigator nav = context.getNavigator(); |
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|
85 | 5888 | if( bothAreSets( lhsValue, rhsValue ) ) |
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{ |
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 | |
} |
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else |
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{ |
97 | 56 | return evaluateSetSet( convertToList( lhsValue ), (List) rhsValue, nav ); |
98 | |
} |
99 | |
} |
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else |
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{ |
102 | 2224 | return evaluateObjectObject( lhsValue, rhsValue, nav ) ? Boolean.TRUE : Boolean.FALSE; |
103 | |
} |
104 | |
} |
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|
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private Boolean evaluateSetSet( List lhsSet, List rhsSet, Navigator nav ) |
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{ |
108 | 3664 | if( setIsEmpty( lhsSet ) || setIsEmpty( rhsSet ) ) |
109 | |
{ |
110 | 1780 | return Boolean.FALSE; |
111 | |
} |
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|
113 | 1884 | for( Iterator lhsIterator = lhsSet.iterator(); lhsIterator.hasNext(); ) |
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{ |
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 | |
} |
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|
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, |
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nav ), |
142 | |
NumberFunction.evaluate( rhs, |
143 | |
nav ) ); |
144 | |
} |
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else |
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{ |
147 | 3910 | return evaluateObjectObject( StringFunction.evaluate( lhs, |
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nav ), |
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StringFunction.evaluate( rhs, |
150 | |
nav ) ); |
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} |
152 | |
} |
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|
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protected abstract boolean evaluateObjectObject( Object lhs, Object rhs ); |
155 | |
} |