AsLatLonText Class Reference

Inheritance diagram for AsLatLonText:

Collaboration diagram for AsLatLonText:

Public Member Functions
String	operation (Geometry geom)
String	convertDecimalToLatLonText (Double D, Boolean lng)
String	getURI ()
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException

Member Function Documentation

convertDecimalToLatLonText()

String convertDecimalToLatLonText	(	Double	D,
		Boolean	lng
	)

Referenced by AsLatLonText.operation().

                                                                       {
            String dir;
                if(D<0) {
                        if(lng) {
                                dir="W";
                        }else {
                                dir="S";
                        }
                }else {
                        if(lng) {
                                dir="E";
                        }else {
                                dir="N";
                        }
                }
                Double deg=D<0?-D:D;
                Double min=D%1*60;
                Double sec=(D*60%1*6000)/100;
                return deg+"°"+min+"'"+sec+"\""+dir;
        }

evaluate()

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

inherited

References LiteralRegistry.getLiteral(), and GeometricStringExportFunction.operation().

                                                                                                            {
                if (args.length != 1) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 1 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());
                        String result = operation(geom);
                        return valueFactory.createLiteral(result);
                }
                throw new ValueExprEvaluationException("Argument given is not a geometry literal");
                
        }

getURI()

String getURI

(

)

References POSTGIS.ST_ASLATLONTEXT.

                               {
                return POSTGIS.ST_ASLATLONTEXT.stringValue();
        }

operation()

String operation

(

Geometry

geom

)

References AsLatLonText.convertDecimalToLatLonText().

                                               {
                if(geom.getGeometryType().equalsIgnoreCase("POINT")) {
                        return convertDecimalToLatLonText(geom.getCoordinate().x,false)+" "+convertDecimalToLatLonText(geom.getCoordinate().getY(),true);       
                }else {
                        return convertDecimalToLatLonText(geom.getCentroid().getCoordinate().x,false)+" "+convertDecimalToLatLonText(geom.getCentroid().getCoordinate().getY(),true);

                }
        }