org.geotools.filter.function
Class FilterFunction_strPosition
Object
ExpressionAbstract
DefaultExpression
FunctionExpressionImpl
FilterFunction_strPosition
- All Implemented Interfaces:
- Factory, ExpressionType, FunctionExpression, Expression, Function
public class FilterFunction_strPosition
- extends FunctionExpressionImpl
Filter function implementing the Symbology Encoding "StringPosition" function.
This function takes three arguments:
- The look up string
- The source string, ie the string to lookup from
- The search direction, frontToBack or backToFront
- Author:
- Justin Deoliveira, OpenGeo
Fields inherited from interface ExpressionType |
ATTRIBUTE, ATTRIBUTE_DOUBLE, ATTRIBUTE_GEOMETRY, ATTRIBUTE_INTEGER, ATTRIBUTE_STRING, ATTRIBUTE_UNDECLARED, FUNCTION, LITERAL_DOUBLE, LITERAL_GEOMETRY, LITERAL_INTEGER, LITERAL_LONG, LITERAL_STRING, LITERAL_UNDECLARED, MATH_ADD, MATH_DIVIDE, MATH_MULTIPLY, MATH_SUBTRACT |
Method Summary |
Object |
evaluate(Object object)
This method checks if the object is an instance of Feature and
if so, calls through to #evaluate(Feature) . |
Methods inherited from class FunctionExpressionImpl |
accept, equals, functionName, getArgCount, getArgs, getExpression, getFallbackValue, getFunctionName, getImplementationHints, getName, getParameters, getType, setArgs, setFallbackValue, setName, setParameters, toString |
NAME
public static FunctionName NAME
FilterFunction_strPosition
public FilterFunction_strPosition()
evaluate
public Object evaluate(Object object)
- Description copied from class:
DefaultExpression
- This method checks if the object is an instance of
Feature
and
if so, calls through to #evaluate(Feature)
. This is done
to maintain backwards compatability with previous version of Expression api
which depended on Feature. If the object is not an instance of feature
the super implementation is called.
- Specified by:
evaluate
in interface Expression
- Overrides:
evaluate
in class DefaultExpression
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