GeometricEditFunction Class Reference

Inheritance diagram for GeometricEditFunction:

Collaboration diagram for GeometricEditFunction:

Public Member Functions
String	getURI ()
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException
abstract Geometry	operation (Geometry geom)

Member Function Documentation

evaluate()

Value evaluate	(	ValueFactory	valueFactory,
		Value...	args
	)		throws ValueExprEvaluationException

                                                                                                            {
                if (args.length != 2) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 2 arguments, got " + args.length);
                }
 
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                if(l instanceof VectorLiteral) {
                        Geometry geom=((VectorLiteral)l).read(args[0].stringValue());
                        Geometry result = operation(geom);
                        return valueFactory.createLiteral(((VectorLiteral) l).unparse(result),((Literal)args[0]).getDatatype());
                }
                throw new ValueExprEvaluationException("Argument given is not a geometry literal");
        }

References LiteralRegistry.getLiteral(), GeometricEditFunction.getURI(), and GeometricEditFunction.operation().

getURI()

String getURI

(

)

                               {
                // TODO Auto-generated method stub
                return null;
        }

Referenced by GeometricEditFunction.evaluate().

operation()

abstract Geometry operation ( Geometry  geom )

abstract

Referenced by GeometricEditFunction.evaluate().