Returns a Lat/Lon text representation of a given geometry. More...

Inheritance diagram for AsLatLonText:

Collaboration diagram for AsLatLonText:

Public Member Functions
String	operation (Geometry geom)

String	convertDecimalToLatLonText (Double D, Boolean lng)
	Converts a decimal number to a latitude longitude representation. More...

String	getURI ()

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

Detailed Description

Returns a Lat/Lon text representation of a given geometry.

Member Function Documentation

◆ convertDecimalToLatLonText()

String convertDecimalToLatLonText	(	Double	D,
		Boolean	lng
	)

Converts a decimal number to a latitude longitude representation.

Parameters

D	the decimal number
lng	indicates if a latitude or longitude number should be returned

Returns: The number in lat/lon representation

                                                                        {
             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;
         }

Referenced by AsLatLonText.operation().

◆ evaluate()

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

inherited

                                                                                                             {
                 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");
                 
         }

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

Referenced by AsBinaryTest.testAsBinary(), AsEncodedPolylineTest.testAsEncodedPolyline(), AsGARSTest.testAsGARS(), AsGeoJSONTest.testAsGeoJSON(), AsGeoRSSTest.testAsGeoRSS(), AsGeoURITest.testAsGeoURI(), AsLatLonTextTest.testAsLatLonText(), AsOSMLinkTest.testAsOSMLink(), AsPolyshapeTest.testAsPolyShape(), AsTextTest.testAsText(), AsTextRawTest.testAsTextRaw(), AsTextTest.testAsTextZ(), DumpTest.testDump(), GeomCRSToWKTTest.testGeomCRSToWKT(), GeometryTypeTest.testLineString(), SridGetAxis1OrientationTest.testSridAxis1Orientation(), SridGetAxis2OrientationTest.testSridAxis2Orientation(), SridGetAxis1NameTest.testSridGetAxis1Name(), SridGetAxis2NameTest.testSridGetAxis2Name(), and SridGetDatumTest.testSridGetDatum().

◆ getURI()

String getURI ( )

                                {
                 return POSTGIS.ST_ASLATLONTEXT.stringValue();
         }

References POSTGIS.ST_ASLATLONTEXT.

◆ operation()

String operation ( Geometry geom )

Reimplemented from GeometricStringExportFunction.

                                                {
                 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);
  
                 }
         }