RemoveRepeatedPoints Class Reference

Inheritance diagram for RemoveRepeatedPoints:

Collaboration diagram for RemoveRepeatedPoints:

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

Protected Member Functions
Geometry	relation (Geometry geom, Double 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);
                }
 
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                Double value=Double.valueOf(args[1].stringValue());
                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("Argument given is not a geometry literal");
        }

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

Referenced by DensifyTest.testDensify(), EnsureClosedTest.testEnsureClosed(), EnsureClosedTest.testEnsureClosed2(), RemoveGeometryTest.testRemoveGeometry1(), RemoveGeometryTest.testRemoveGeometry1Z(), RemoveGeometryTest.testRemoveGeometry2(), RemoveGeometryTest.testRemoveGeometry2Z(), RemoveRepeatedPointsTest.testRemoveRepeatedPoints(), SimplifyTest.testSimplify(), and SimplifyVWTest.testSimplifyVW().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_removeRepeatedPoints.stringValue();
        }

References POSTGIS.st_removeRepeatedPoints.

relation()

Geometry relation ( Geometry  geom, Double  value  )

protected

Reimplemented from GeometricModifierDoubleFunction.

                                                                 {
        if(geom.getGeometryType().equalsIgnoreCase("Point")) {
                return geom;
        }
        Double tolerance=value;
        int i=0,j=0;
        boolean repeated=false;
        List<Coordinate> result=new LinkedList<Coordinate>();
        for(Coordinate coord:geom.getCoordinates()) {
                j=0;
                repeated=false;
                for(Coordinate coord2:geom.getCoordinates()) {
                        if(i!=j && coord.equals2D(coord2, tolerance)) {
                                repeated=true;
                        }
                        j++;
                }
                if(!repeated) {
                        result.add(coord);
                }
                i++;
        }
        return LiteralUtils.createGeometry(result, geom.getGeometryType(), geom.getSRID());
        }

References LiteralUtils.createGeometry().