com.vividsolutions.jtstest.geomop

Class OverlayValidatedGeometryOperation

java.lang.Object

com.vividsolutions.jtstest.geomop.OverlayValidatedGeometryOperation

All Implemented Interfaces:

GeometryOperation

public class OverlayValidatedGeometryOperation
extends Object
implements GeometryOperation

A GeometryOperation which validates the result of overlay operations. If an invalid result is found, an exception is thrown (this is the most convenient and noticeable way of flagging the problem when using the TestRunner). All other Geometry methods are executed normally.

In order to eliminate the need to specify the precise result of an overlay, this class forces the final return value to be GEOMETRYCOLLECTION EMPTY.

This class can be used via the -geomop command-line option or by the <geometryOperation> XML test file setting.

Author:

Martin Davis

Constructor Summary

Constructors

Constructor and Description
OverlayValidatedGeometryOperation()
OverlayValidatedGeometryOperation(GeometryMethodOperation chainOp) Creates a new operation which chains to the given GeometryMethodOperation for non-intercepted methods.

Method Summary

Modifier and Type	Method and Description
static double	areaDiff(Geometry g0, Geometry g1)
Class	getReturnType(String opName) Gets the class of the return type of the given operation.
Result	invoke(String opName, Geometry geometry, Object[] args) Invokes the named operation
static Geometry	invokeGeometryOverlayMethod(int opCode, Geometry g0, Geometry g1)
Result	invokeValidatedOverlayOp(int opCode, Geometry g0, Object[] args) Invokes an overlay op, optionally using snapping, and optionally validating the result.
static int	overlayOpCode(String methodName)

Methods inherited from class java.lang.Object

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

Constructor Detail

OverlayValidatedGeometryOperation

public OverlayValidatedGeometryOperation()

OverlayValidatedGeometryOperation

public OverlayValidatedGeometryOperation(GeometryMethodOperation chainOp)

Creates a new operation which chains to the given GeometryMethodOperation for non-intercepted methods.

Parameters:

chainOp - the operation to chain to

Method Detail

overlayOpCode

public static int overlayOpCode(String methodName)

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

Invokes the named operation

Specified by:

invoke in interface GeometryOperation

Parameters:

opName -

geometry -

args -

Returns:

the result

Throws:

Exception

See Also:

GeometryOperation.invoke(java.lang.String, com.vividsolutions.jts.geom.Geometry, java.lang.Object[])

invokeValidatedOverlayOp

public Result invokeValidatedOverlayOp(int opCode,
                                       Geometry g0,
                                       Object[] args)
                                throws Exception

Invokes an overlay op, optionally using snapping, and optionally validating the result.

Parameters:

opCode -

g0 -

args -

Returns:

the result

Throws:

Exception

areaDiff

public static double areaDiff(Geometry g0,
                              Geometry g1)

invokeGeometryOverlayMethod

public static Geometry invokeGeometryOverlayMethod(int opCode,
                                                   Geometry g0,
                                                   Geometry g1)