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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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|
59 | |
abstract class DefaultEqualityExpr extends DefaultTruthExpr implements EqualityExpr |
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{ |
61 | |
DefaultEqualityExpr( Expr lhs, Expr rhs ) |
62 | |
{ |
63 | 1288 | super( lhs, rhs ); |
64 | 1288 | } |
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|
66 | |
public String toString() |
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{ |
68 | 0 | return "[(DefaultEqualityExpr): " + getLHS() + ", " + getRHS() + "]"; |
69 | |
} |
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|
71 | |
public Object evaluate( Context context ) throws JaxenException |
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{ |
73 | 5988 | Object lhsValue = getLHS().evaluate( context ); |
74 | 5988 | Object rhsValue = getRHS().evaluate( context ); |
75 | |
|
76 | 5984 | if( lhsValue == null || rhsValue == null ) { |
77 | 0 | return Boolean.FALSE; |
78 | |
} |
79 | |
|
80 | 5984 | Navigator nav = context.getNavigator(); |
81 | |
|
82 | 5984 | if( bothAreSets(lhsValue, rhsValue) ) { |
83 | 26 | return evaluateSetSet( (List) lhsValue, (List) rhsValue, nav ); |
84 | |
} |
85 | 5958 | else if (isSet(lhsValue ) && isBoolean(rhsValue)) { |
86 | 8 | Boolean lhsBoolean = ((List) lhsValue).isEmpty() ? Boolean.FALSE : Boolean.TRUE; |
87 | 8 | Boolean rhsBoolean = (Boolean) rhsValue; |
88 | 8 | return Boolean.valueOf(evaluateObjectObject( lhsBoolean, rhsBoolean, nav ) ); |
89 | |
} |
90 | 5950 | else if (isBoolean(lhsValue ) && isSet(rhsValue)) { |
91 | 0 | Boolean lhsBoolean = (Boolean) lhsValue; |
92 | 0 | Boolean rhsBoolean = ((List) rhsValue).isEmpty() ? Boolean.FALSE : Boolean.TRUE; |
93 | 0 | return Boolean.valueOf(evaluateObjectObject( lhsBoolean, rhsBoolean, nav ) ); |
94 | |
} |
95 | 5950 | else if (eitherIsSet(lhsValue, rhsValue) ) { |
96 | 3650 | if (isSet(lhsValue)) { |
97 | 3594 | return evaluateSetSet( (List) lhsValue, convertToList(rhsValue), nav ); |
98 | |
} |
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else { |
100 | 56 | return evaluateSetSet( convertToList(lhsValue), (List) rhsValue, nav ); |
101 | |
} |
102 | |
} |
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else { |
104 | 2300 | return Boolean.valueOf(evaluateObjectObject( lhsValue, rhsValue, nav ) ); |
105 | |
} |
106 | |
} |
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|
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private Boolean evaluateSetSet( List lhsSet, List rhsSet, Navigator nav ) |
109 | |
{ |
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|
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|
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|
113 | |
|
114 | 3676 | if( setIsEmpty( lhsSet ) || setIsEmpty( rhsSet ) ) { |
115 | 1780 | return Boolean.FALSE; |
116 | |
} |
117 | |
|
118 | 1896 | for( Iterator lhsIterator = lhsSet.iterator(); lhsIterator.hasNext(); ) |
119 | |
{ |
120 | 2056 | Object lhs = lhsIterator.next(); |
121 | |
|
122 | 2056 | for( Iterator rhsIterator = rhsSet.iterator(); rhsIterator.hasNext(); ) |
123 | |
{ |
124 | 2064 | Object rhs = rhsIterator.next(); |
125 | |
|
126 | 2064 | if( evaluateObjectObject( lhs, rhs, nav ) ) |
127 | |
{ |
128 | 384 | return Boolean.TRUE; |
129 | |
} |
130 | 1680 | } |
131 | 1672 | } |
132 | |
|
133 | 1512 | return Boolean.FALSE; |
134 | |
} |
135 | |
|
136 | |
private boolean evaluateObjectObject( Object lhs, Object rhs, Navigator nav ) |
137 | |
{ |
138 | 4372 | if( eitherIsBoolean( lhs, rhs ) ) |
139 | |
{ |
140 | 180 | return evaluateObjectObject( BooleanFunction.evaluate( lhs, nav ), |
141 | 90 | BooleanFunction.evaluate( rhs, nav ) ); |
142 | |
} |
143 | 4282 | else if( eitherIsNumber( lhs, rhs ) ) |
144 | |
{ |
145 | 572 | return evaluateObjectObject( NumberFunction.evaluate( lhs, |
146 | |
nav ), |
147 | 286 | NumberFunction.evaluate( rhs, |
148 | |
nav ) ); |
149 | |
} |
150 | |
else |
151 | |
{ |
152 | 7992 | return evaluateObjectObject( StringFunction.evaluate( lhs, |
153 | |
nav ), |
154 | 3996 | StringFunction.evaluate( rhs, |
155 | |
nav ) ); |
156 | |
} |
157 | |
} |
158 | |
|
159 | |
protected abstract boolean evaluateObjectObject( Object lhs, Object rhs ); |
160 | |
} |