SetPoint Class Reference

Inheritance diagram for SetPoint:

Collaboration diagram for SetPoint:

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

Protected Member Functions
Geometry	relation (Geometry geom1, Geometry geom2, Integer zerobasedposition)

Member Function Documentation

evaluate()

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

inherited

                                                                                                                    {
                        if (args.length != 3) {
                                throw new ValueExprEvaluationException(getURI() + " requires exactly 3 arguments, got " + args.length);
                        }               
                        
                        Integer value=Integer.valueOf(args[2].stringValue());
                        LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                        LiteralType l2=LiteralRegistry.getLiteral(((Literal)args[1]).getDatatype().toString());
                        if(l instanceof VectorLiteral && l2 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,value);
                                return valueFactory.createLiteral(((VectorLiteral) l).unparse(result),((Literal)args[0]).getDatatype());
                        }
                        throw new ValueExprEvaluationException("Argument given is not a geometry literal");
                }

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

Referenced by SetPointTest.testSetPoint().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_setPoint.stringValue();
        }

References POSTGIS.st_setPoint.

relation()

Geometry relation ( Geometry  geom1, Geometry  geom2, Integer  zerobasedposition  )

protected

Reimplemented from GeometricDoubleModifierIntegerFunction.

                                                                                              {
        if (geom2 instanceof Point) {
            Coordinate[] coords=geom1.getCoordinates();
            System.out.println(coords);
            Coordinate[] newcoords=coords;
            newcoords[zerobasedposition.intValue()]=geom2.getCoordinate();
            return LiteralUtils.createGeometry(newcoords, geom1.getGeometryType(), geom1.getSRID());
        }
        return null;
        }

References LiteralUtils.createGeometry().