GeometricDoubleThreeGeometryFunction Class Reference

Inheritance diagram for GeometricDoubleThreeGeometryFunction:

Collaboration diagram for GeometricDoubleThreeGeometryFunction:

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

Protected Member Functions
abstract Double	relation (Geometry geom, Geometry geom2, Geometry geom3)

Member Function Documentation

evaluate()

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

                                                                                                            {
                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());
                LiteralType l3=LiteralRegistry.getLiteral(((Literal)args[2]).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 geom3=((VectorLiteral)l3).read(args[2].stringValue());
                        Double result = relation(geom,geom2,geom3);
                        return valueFactory.createLiteral(result);
                }
                throw new ValueExprEvaluationException("Argument given is not a geometry literal");
        }

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

Referenced by AngleTest.testAngle().

relation()

abstract Double relation ( Geometry  geom, Geometry  geom2, Geometry  geom3  )

abstractprotected

Reimplemented in Angle.

Referenced by GeometricDoubleThreeGeometryFunction.evaluate().