WithinDistance3D Class Reference

Inheritance diagram for WithinDistance3D:

Collaboration diagram for WithinDistance3D:

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

Protected Member Functions
boolean	relation (Geometry g1, Geometry g2, Double distance)

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);
                        }
 
                        LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                        LiteralType l2=LiteralRegistry.getLiteral(((Literal)args[1]).getDatatype().toString());
                        Double value=Double.valueOf(args[2].stringValue());
                        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);
                                boolean result = relation(geom,transformed,value);
                                return valueFactory.createLiteral(result);
                        }
                        throw new ValueExprEvaluationException("Arguments given are not a geometry literal");
 
                }

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

Referenced by FullyWithinDistanceTest.testFullyWithinDistanceFalse(), and FullyWithinDistanceTest.testFullyWithinDistanceTrue().

getURI()

String getURI

(

)

                               {
                return POSTGIS.ST_DISTANCE3D.stringValue();
        }

References POSTGIS.ST_DISTANCE3D.

relation()

boolean relation ( Geometry  g1, Geometry  g2, Double  distance  )

protected

Reimplemented from GeometricRelationDoubleBinaryFunction.

                                                                              {
                Geometry transformed=LiteralUtils.transform(g2, g1);
        Distance3DOp op3d=new Distance3DOp(g1, transformed);
        double distance3d=op3d.distance();
        if(distance<=distance3d) {
                return true;
        }
        return false;   
        }

References LiteralUtils.transform().