PolygonFromText Class Reference

Creates a polygon from a WKT String. More...

Inheritance diagram for PolygonFromText:

Collaboration diagram for PolygonFromText:

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

Detailed Description

Creates a polygon from a WKT String.

Member Function Documentation

construct()

Geometry construct

(

String

input

)

Reimplemented from GeometricConstructor.

                                                {
                WKTReader wktreader=new WKTReader();
        Geometry geom;
                try {
                        geom = wktreader.read(input);
                        System.out.println(geom.getGeometryType());
                if("Polygon".equals(geom.getGeometryType())){
                        return geom;
                }
                } catch (ParseException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                } 
        return null;
        }

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);
                }
                String geomString = args[0].stringValue();
                Geometry result = construct(geomString);
                return valueFactory.createLiteral(WKTDatatype.INSTANCE.unparse(result), WKTDatatype.LiteralIRI);
        }

References GeometricConstructor.construct(), WKTDatatype.INSTANCE, WKTDatatype.LiteralIRI, and WKTDatatype.unparse().

Referenced by GeomFromGeoJSONTest.testGeomFromGeoJSON(), GeomFromTextTest.testGeomFromText(), GeomFromWKBTest.testGeomFromWKB(), MakeLineTest.testMakeLine1(), MakePointTest.testMakePoint1(), MakePointTest.testMakePointXYZ(), PointFromTextTest.testPointFromText(), and PolygonFromTextTest.testPolygonFromText().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_polygonFromText.stringValue();
        }

References POSTGIS.st_polygonFromText.