AddInteriorRing Class Reference

Adds an additional interior ring to a given polygon. More...

Inheritance diagram for AddInteriorRing:

Collaboration diagram for AddInteriorRing:

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

Protected Member Functions
Geometry	relation (Geometry geom, Geometry g2)

Detailed Description

Adds an additional interior ring to a given polygon.

Member Function Documentation

evaluate()

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

inherited

                                                                                                            {
                if (args.length != 2) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 2 arguments, got " + args.length);
                }
 
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                LiteralType l2=LiteralRegistry.getLiteral(((Literal)args[1]).getDatatype().toString());
                if(l instanceof VectorLiteral) {
                        Geometry geom=((VectorLiteral)l).read(args[0].stringValue());
                        Geometry geom2=((VectorLiteral)l2).read(args[1].stringValue());
                        Geometry transformed=LiteralUtils.transform(geom2, geom);
                        Geometry result = relation(geom,transformed);
                        return valueFactory.createLiteral(((VectorLiteral) l).unparse(result),((Literal)args[0]).getDatatype());
                }
                throw new ValueExprEvaluationException("Argument given is not a geometry literal");
        }

References LiteralRegistry.getLiteral(), GeometricModifierFunction.relation(), and LiteralUtils.transform().

Referenced by AddGeometryTest.testAddGeometry(), AddGeometryTest.testAddGeometryZ(), AddPointTest.testAddPoint(), AddPointTest.testAddPointZ(), AddRingTest.testAddRing(), ClosestPointTest.testClosestPoint(), FurthestCoordinateTest.testFurthestCoordinate(), SetEndPointTest.testSetEndPoint(), and SetStartPointTest.testSetStartPoint().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_addInteriorRing.toString();
        }

References POSTGIS.st_addInteriorRing.

relation()

Geometry relation ( Geometry  geom, Geometry  g2  )

protected

Reimplemented from GeometricModifierFunction.

                                                                {
                if(geom instanceof Polygon) {
                        Polygon poly=(Polygon) geom;
                        List<LinearRing> rings=new LinkedList<LinearRing>();
                        for(int i=0;i<poly.getNumInteriorRing();i++) {
                                        rings.add((LinearRing)poly.getInteriorRingN(i));
                        }
                        rings.add((LinearRing)g2);
                        GeometryFactory fac=new GeometryFactory();
                        return fac.createPolygon((LinearRing)poly.getExteriorRing(), rings.toArray(new LinearRing[0]));
                }
                return null;
        }