LineFromWKB Class Reference

Inheritance diagram for LineFromWKB:

Collaboration diagram for LineFromWKB:

Public Member Functions
Geometry	construct (String input)
String	getURI ()
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException

Member Function Documentation

construct()

Geometry construct

(

String

input

)

References LiteralUtils.createGeometry().

                                                {
         WKBReader reader=new WKBReader();
         Geometry geom;
                try {
                        geom = reader.read(input.getBytes());
                 if("LINESTRING".equals(geom.getGeometryType().toUpperCase())){
                         return LiteralUtils.createGeometry(geom.getCoordinates(), "LINESTRING", geom.getSRID());
                 }
                } catch (ParseException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                }

         return null;
        }

evaluate()

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

inherited

References GeometricConstructor.construct(), and LiteralRegistry.getLiteral().

                                                                                                            {
                if (args.length != 1) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 1 arguments, got " + args.length);
                }
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                String geomString = args[0].stringValue();
                Geometry result = construct(geomString);
                return valueFactory.createLiteral(((VectorLiteral) l).unparse(result),((Literal)args[0]).getDatatype());
        }

getURI()

String getURI

(

)

References POSTGIS.st_lineFromWKB.

                               {
                return POSTGIS.st_lineFromWKB.stringValue();
        }