Package org.geotools.filter.function
Class AttributeCountFunction
Object
ExpressionAbstract
DefaultExpression
FunctionExpressionImpl
AttributeCountFunction
- All Implemented Interfaces:
Expression
,Function
,FunctionExpression
,Factory
Takes an AttributeExpression, and computes the node count for the attribute.
- Author:
- Rini Angreani (CSIRO Mineral Resources)
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Field Summary
FieldsFields inherited from class FunctionExpressionImpl
fallback, functionName, name, params
Fields inherited from interface Expression
NIL
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Constructor Summary
Constructors -
Method Summary
Methods inherited from class FunctionExpressionImpl
accept, equals, functionName, getExpression, getFallbackValue, getFunctionName, getImplementationHints, getName, getParameters, hashCode, setFallbackValue, setParameters, toString
Methods inherited from class DefaultExpression
isAttributeExpression, isExpression, isFunctionExpression, isGeometryExpression, isLiteralExpression, isMathExpression
Methods inherited from class ExpressionAbstract
evaluate
Methods inherited from interface Expression
evaluate
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Field Details
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NAME
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Constructor Details
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AttributeCountFunction
public AttributeCountFunction()
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Method Details
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evaluate
Description copied from class:ExpressionAbstract
Subclass should override, default implementation returns null.- Specified by:
evaluate
in interfaceExpression
- Overrides:
evaluate
in classFunctionExpressionImpl
- Returns:
- default implementation returns null
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