Package org.geotools.filter.visitor
Class NullExpressionVisitor
Object
NullExpressionVisitor
- All Implemented Interfaces:
ExpressionVisitor
This class does *nothing* - useful to prevent null checks in AbstractFilterVisitor.
- Author:
- Jody
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvisit(NilExpression expression, Object extraData) Used to visit a Expression.NIL, also called fornullwhere an expression is expected.visit(PropertyName expression, Object extraData)
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Constructor Details
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NullExpressionVisitor
public NullExpressionVisitor()
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Method Details
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visit
Description copied from interface:ExpressionVisitorUsed to visit a Expression.NIL, also called fornullwhere an expression is expected.This is particularly useful when doing data transformations, as an example when using a StyleSymbolizer Expression.NIL can be used to represent the default stroke color.
- Specified by:
visitin interfaceExpressionVisitor- Returns:
- implementation specific
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visit
- Specified by:
visitin interfaceExpressionVisitor
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visit
- Specified by:
visitin interfaceExpressionVisitor
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visit
- Specified by:
visitin interfaceExpressionVisitor
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visit
- Specified by:
visitin interfaceExpressionVisitor
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visit
- Specified by:
visitin interfaceExpressionVisitor
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visit
- Specified by:
visitin interfaceExpressionVisitor
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visit
- Specified by:
visitin interfaceExpressionVisitor
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