BBOXDistance Class Reference

Returns the distance between the two bounding boxes of geometry 1 and geometry 2. More...

Inheritance diagram for BBOXDistance:

Collaboration diagram for BBOXDistance:

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

Protected Member Functions
double	relation (Geometry g1, Geometry g2)

Detailed Description

Returns the distance between the two bounding boxes of geometry 1 and geometry 2.

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 && 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);
                        double result = relation(geom,transformed);
                        return valueFactory.createLiteral(result);
                }
                throw new ValueExprEvaluationException("Arguments given are not a geometry literal");
 
        }

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

Referenced by AreaSimilarityTest.testAreaSimilarity(), AreaSimilarityTest.testAreaSimilarity2(), BBOXDistanceTest.testBBOXDistance(), CentroidDistanceTest.testCentroidDistance(), CentroidDistanceTest.testCentroidDistance2(), DistanceSphereTest.testDistanceSphere(), DistanceSphereTest.testDistanceSphere2(), HausdorffDistanceTest.testHausdorffDistance(), IntersectionPercentageTest.testIntersectionPercentage(), IntersectionPercentageTest.testIntersectionPercentage2(), ManhattanDistanceTest.testManhattanDistance(), MaxDistanceTest.testMaxDistance(), and MaxDistance3DTest.testMaxDistance3D().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_bboxdistance.stringValue();
        }

References POSTGIS.st_bboxdistance.

relation()

double relation ( Geometry  g1, Geometry  g2  )

protected

Reimplemented from GeometricRelationDoubleFunction.

                                                            {
                Geometry transformed=LiteralUtils.transform(g2, g1);
                return g1.getEnvelope().distance(transformed.getEnvelope());
        }

References LiteralUtils.transform().