SwapOrdinates Class Reference

Inheritance diagram for SwapOrdinates:

Collaboration diagram for SwapOrdinates:

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

Protected Member Functions
Geometry	relation (Geometry geom, String value)

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);
                }
 
                String value=args[1].stringValue();
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                if(l instanceof VectorLiteral) {
                        Geometry geom=((VectorLiteral)l).read(args[0].stringValue());
                        Geometry result = relation(geom,value);
                        return valueFactory.createLiteral(((VectorLiteral) l).unparse(result),((Literal)args[0]).getDatatype());
                }
                throw new ValueExprEvaluationException("Arguments given are not geometry literals");
        }

References LiteralRegistry.getLiteral(), and GeometricModifierStringFunction.relation().

Referenced by SwapOrdinatesTest.testSwapOrdinates().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_swapOrdinates.stringValue();
        }

References POSTGIS.st_swapOrdinates.

relation()

Geometry relation ( Geometry  geom, String  value  )

protected

Reimplemented from GeometricModifierStringFunction.

                                                                 {
            String ords = value;
            List<Coordinate> newcoords=new ArrayList<Coordinate>();
            if(ords.equalsIgnoreCase("xy")) {
                for(Coordinate coord:geom.getCoordinates()) {
                        if(coord instanceof CoordinateXYM) {
                                newcoords.add(new CoordinateXYM(coord.getY(),coord.getX(),coord.getM()));
                        }else if(coord instanceof CoordinateXYZM) {
                                newcoords.add(new CoordinateXYZM(coord.getY(),coord.getX(),coord.getZ(),coord.getM()));
                        }else {
                                newcoords.add(new Coordinate(coord.getY(),coord.getX()));                               
                        }
                }
            }else if(ords.equalsIgnoreCase("xz")) {
                for(Coordinate coord:geom.getCoordinates()) {
                        if(coord instanceof CoordinateXYM) {
                                throw new RuntimeException("Coordinates do not contain a Z value");
                        }else if(coord instanceof CoordinateXYZM) {
                                newcoords.add(new CoordinateXYZM(coord.getZ(),coord.getY(),coord.getX(),coord.getM()));
                        }else {
                                newcoords.add(new Coordinate(coord.getZ(),coord.getY(),coord.getX()));                                  
                        }
                }
            }else if(ords.equalsIgnoreCase("yz")) {
                for(Coordinate coord:geom.getCoordinates()) {
                        if(coord instanceof CoordinateXYM) {
                                throw new RuntimeException("Coordinates do not contain a Z value");
                        }else if(coord instanceof CoordinateXYZM) {
                                newcoords.add(new CoordinateXYZM(coord.getX(),coord.getZ(),coord.getY(),coord.getM()));
                        }else {
                                newcoords.add(new Coordinate(coord.getX(),coord.getZ(),coord.getY()));                          
                        }
                }
            }else if(ords.equalsIgnoreCase("xm")) {
                for(Coordinate coord:geom.getCoordinates()) {
                        if(coord instanceof CoordinateXYM) {
                                newcoords.add(new CoordinateXYM(coord.getM(),coord.getY(),coord.getX()));
                        }else if(coord instanceof CoordinateXYZM) {
                                newcoords.add(new CoordinateXYZM(coord.getM(),coord.getY(),coord.getZ(),coord.getX()));
                        }else {
                                throw new RuntimeException("Coordinates do not contain a M value");                             
                        }
                }
            }else if(ords.equalsIgnoreCase("ym")) {
                for(Coordinate coord:geom.getCoordinates()) {
                        if(coord instanceof CoordinateXYM) {
                                newcoords.add(new CoordinateXYM(coord.getX(),coord.getM(),coord.getY()));
                        }else if(coord instanceof CoordinateXYZM) {
                                newcoords.add(new CoordinateXYZM(coord.getX(),coord.getM(),coord.getZ(),coord.getY()));
                        }else {
                                throw new RuntimeException("Coordinates do not contain a M value");                             
                        }
                }
            }else if(ords.equalsIgnoreCase("zm")) {
                for(Coordinate coord:geom.getCoordinates()) {
                        if(coord instanceof CoordinateXYM) {
                                throw new RuntimeException("Coordinates do not contain a M and Z value");      
                        }else if(coord instanceof CoordinateXYZM) {
                                newcoords.add(new CoordinateXYZM(coord.getX(),coord.getY(),coord.getM(),coord.getZ()));
                        }else {
                                throw new RuntimeException("Coordinates do not contain a M and Z value");                               
                        }
                }
            }else {
                throw new RuntimeException("Invalid second argument"); 
            }
            return LiteralUtils.createGeometry(newcoords, geom.getGeometryType(), geom.getSRID());
        }

References LiteralUtils.createGeometry().