com.vividsolutions.jtstest.function

Interface GeometryFunction

All Known Implementing Classes:

BaseGeometryFunction, StaticMethodGeometryFunction

public interface GeometryFunction

A reification of a function which can be executed on a Geometry, possibly with other arguments. The function may return a Geometry or a scalar value.

Author:

Martin Davis

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj) Two functions are the same if they have the same name, parameter types and return type.
String	getCategory() Gets the category name of this function
String	getDescription() Gets the description of this function
String	getName() Gets the name of this function
String[]	getParameterNames() Gets the parameter names for this function
Class[]	getParameterTypes() Gets the types of the other function arguments, if any.
Class	getReturnType() Gets the return type of this function
String	getSignature() Gets a string representing the signature of this function.
Object	invoke(Geometry geom, Object[] args) Invokes this function.
boolean	isBinary()

Method Detail

getCategory

String getCategory()

Gets the category name of this function

Returns:

the category name of the function

getName

String getName()

Gets the name of this function

Returns:

the name of the function

getDescription

String getDescription()

Gets the description of this function

Returns:

the name of the function

getParameterNames

String[] getParameterNames()

Gets the parameter names for this function

Returns:

the names of the function parameters

getParameterTypes

Class[] getParameterTypes()

Gets the types of the other function arguments, if any.

Returns:

the types

getReturnType

Class getReturnType()

Gets the return type of this function

Returns:

the type of the value returned by this function

getSignature

String getSignature()

Gets a string representing the signature of this function.

Returns:

the string for the function signature

invoke

Object invoke(Geometry geom,
            Object[] args)

Invokes this function. Note that any exceptions returned must be RuntimeExceptions.

Parameters:

geom - the target geometry

args - the other arguments to the function

Returns:

the value computed by the function

equals

boolean equals(Object obj)

Two functions are the same if they have the same name, parameter types and return type.

Overrides:

equals in class Object

Parameters:

obj -

Returns:

true if this object is the same as the obj argument

isBinary

boolean isBinary()