AsGPX Class Reference

Inheritance diagram for AsGPX:

Collaboration diagram for AsGPX:

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

Package Attributes
String	out
String	out2
String	out3 =" </trkseg></trk></gpx>"

Member Function Documentation

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_ASGPX.

                               {
                return POSTGIS.ST_ASGPX.stringValue();
        }

operation()

String operation

(

Geometry

geom

)

References AsGPX.out3.

                                               {
        StringBuilder trackpoints=new StringBuilder();
        for(Coordinate coord:geom.getCoordinates()) {
                trackpoints.append("<trkpt lat='"+coord.x+"' lon='"+coord.y+"'>");
                if(!Double.isNaN(coord.getZ()))
                        trackpoints.append("<ele>"+coord.getZ()+"</ele>");
                trackpoints.append("</trkpt>");
        }
        return out+out2+trackpoints+out3;
        }

Member Data Documentation

out

String out

package

Initial value:

="<?xml version='1.0' encoding='UTF-8' standalone='no' ?>" + 
                        "<gpx version='1.0'>"+
                        "<name>Example gpx</name>"

out2

String out2

package

Initial value:

= 
                        "  <trk>" + 
                        "    <name>Example gpx</name>" + 
                        "    <trkseg>"

out3

String out3 =" </trkseg></trk></gpx>"

package

Referenced by AsGPX.operation().