com.vividsolutions.jtstest.geomop

Class GeometryFunctionOperation

java.lang.Object

com.vividsolutions.jtstest.geomop.GeometryFunctionOperation

All Implemented Interfaces:

GeometryOperation

public class GeometryFunctionOperation
extends Object
implements GeometryOperation

Invokes a function from registry or a Geometry method determined by a named operation with a list of arguments, the first of which is a Geometry. This class allows overriding Geometry methods or augmenting them with functions defined in a GeometryFunctionRegistry.

Version:

1.7

Author:

Martin Davis

Constructor Summary

Constructors

Constructor and Description
GeometryFunctionOperation()
GeometryFunctionOperation(GeometryFunctionRegistry registry)

Method Summary

Modifier and Type	Method and Description
Class	getReturnType(String opName) Gets the class of the return type of the given operation.
Result	invoke(String opName, Geometry geometry, Object[] args) Invokes an operation on a Geometry.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GeometryFunctionOperation

public GeometryFunctionOperation()

GeometryFunctionOperation

public GeometryFunctionOperation(GeometryFunctionRegistry registry)

Method Detail

getReturnType

public Class getReturnType(String opName)

Description copied from interface: GeometryOperation

Gets the class of the return type of the given operation.

Specified by:

getReturnType in interface GeometryOperation

Parameters:

opName - the name of the operation

Returns:

the class of the return type of the specified operation

invoke

public Result invoke(String opName,
                     Geometry geometry,
                     Object[] args)
              throws Exception

Description copied from interface: GeometryOperation

Invokes an operation on a Geometry.

Specified by:

invoke in interface GeometryOperation

Parameters:

opName - name of the operation

geometry - the geometry to process

args - the arguments to the operation (which may be typed as Strings)

Returns:

the result of the operation

Throws:

Exception - if some error was encountered trying to find or process the operation