Package org.geotools.filter.function
Class FilterFunction_property
Object
ExpressionAbstract
DefaultExpression
FunctionExpressionImpl
FilterFunction_property
- All Implemented Interfaces:
Expression
,Function
,VolatileFunction
,FunctionExpression
,Factory
Extracts a property from a feature, taking the property name as a parameter
- Author:
- Andrea Aime - GeoSolutions
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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 interface Expression
accept
Methods inherited from interface Function
getFallbackValue, getFunctionName, getName, getParameters
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Field Details
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NAME
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Constructor Details
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FilterFunction_property
public FilterFunction_property()
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Method Details
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evaluate
Description copied from class:ExpressionAbstract
Default implementation delegates handling of context conversion to Converters utility class.Subclasses are expected to make use of the Converters utility class (as the easiest way to provide value morphing in conformance with the Filter specification).
- Specified by:
evaluate
in interfaceExpression
- Overrides:
evaluate
in classExpressionAbstract
- Type Parameters:
T
- The type of the returned object.- Parameters:
object
- The object to evaluate the expression against.context
- The type of the resulting value of the expression.- Returns:
- Evaluates the given expression based on the content of the given object an an instance of
context
.
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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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