Package org.geotools.filter.function

Class PointOnLineFunction

Object

ExpressionAbstract

DefaultExpression

FunctionExpressionImpl

PointOnLineFunction

All Implemented Interfaces:

Expression, Function, FunctionExpression, Factory

public class PointOnLineFunction
extends FunctionExpressionImpl

Returns a point on the provided line. The point is at the specified percentage of the line's length. If no percentage is provided, the mid point will be returned. If the line is a collection of lines, the first line is used.

No attempt is made to perform linear referencing based on a measure, althought this could be implemented in the future.

Field Summary

Fields

Modifier and Type	Field	Description
static FunctionName	NAME

Fields inherited from class FunctionExpressionImpl

fallback, functionName, name, params

Fields inherited from interface Expression

NIL

Constructor Summary

Constructors

Constructor	Description
PointOnLineFunction()

Method Summary

Modifier and Type	Method	Description
Object	evaluate(Object object)	Subclass should override, default implementation returns null.

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 class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Expression

evaluate

Field Details

NAME

public static FunctionName NAME

Constructor Details

PointOnLineFunction

public PointOnLineFunction()

Method Details

evaluate

public Object evaluate(Object object)

Description copied from class: ExpressionAbstract

Subclass should override, default implementation returns null.

Specified by:

evaluate in interface Expression

Overrides:

evaluate in class FunctionExpressionImpl

Returns:

default implementation returns null