RasterToVectorExportFunction Class Reference

Inheritance diagram for RasterToVectorExportFunction:

Collaboration diagram for RasterToVectorExportFunction:

Public Member Functions
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException
abstract Geometry	modify (GridCoverage coverage)

Member Function Documentation

evaluate()

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

                                                                                                            {
                if (args.length != 3) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 1 arguments, got " + args.length);
                }
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                if(l instanceof RasterLiteral) {
                        GridCoverage geom=((RasterLiteral)l).read(args[0].stringValue());
                        Integer longitude = Integer.valueOf(args[1].stringValue());
                        Integer latitude = Integer.valueOf(args[2].stringValue());
                        Geometry result = modify(geom);
                        return valueFactory.createLiteral(((VectorLiteral) l).unparse(result),((Literal)args[0]).getDatatype());
                }
                return null;
        }

References LiteralRegistry.getLiteral(), and RasterToVectorExportFunction.modify().

modify()

abstract Geometry modify ( GridCoverage  coverage )

abstract

Referenced by RasterToVectorExportFunction.evaluate().