NumPoints Class Reference

Returns the number of points of the given geometry. More...

Inheritance diagram for NumPoints:

Collaboration diagram for NumPoints:

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

Detailed Description

Returns the number of points of the given geometry.

Member Function Documentation

attribute()

int attribute

(

Geometry

geom

)

Reimplemented from GeometricIntegerAttributeFunction.

                                            {
                return geom.getNumPoints();
        }

evaluate()

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

inherited

                                                                                                            {
                if (args.length != 1) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 1 arguments, got " + args.length);
                }
 
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                if(l instanceof VectorLiteral) {
                        Geometry geom=((VectorLiteral)l).read(args[0].stringValue());
                        int result = attribute(geom);
                        return valueFactory.createLiteral(result);
                }
                throw new ValueExprEvaluationException("Argument given is not a geometry literal");
        }

References GeometricIntegerAttributeFunction.attribute(), and LiteralRegistry.getLiteral().

Referenced by NDimsTest.test2DGeom(), NDimsTest.test3DGeom(), NDimsTest.testMGeom(), NRingsTest.testNRings(), NumDistinctInteriorRingsTest.testNRings(), NumDistinctGeometriesTest.testNumDistinctGeometries(), NumDistinctGeometriesTest.testNumDistinctGeometriesCollection(), NumDistinctPointsTest.testNumDistinctPoints(), NumGeometriesTest.testNumGeometries(), NumGeometriesTest.testNumGeometriesCollection(), NumPointsTest.testNumPoints(), and OrientationTest.testOrientation().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_numPoints.stringValue();
        }

References POSTGIS.st_numPoints.