Package org.geotools.filter.function
Class DateDifferenceFunction
Object
ExpressionAbstract
DefaultExpression
FunctionExpressionImpl
DateDifferenceFunction
- All Implemented Interfaces:
Expression
,Function
,FunctionExpression
,Factory
The function computes the difference between two date objects (as a-b), in the specified time unit (default to
milliseconds). Supported time units are "s", "m", "h", "d" (for seconds, minutes, hours, days respectively).
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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, 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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DateDifferenceFunction
public DateDifferenceFunction()
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Method Details
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getName
Description copied from class:FunctionExpressionImpl
Gets the name of this function.- Specified by:
getName
in interfaceFunction
- Overrides:
getName
in classFunctionExpressionImpl
- Returns:
- the name of the function.
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getArgCount
public int getArgCount() -
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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