Define infix operators for Object types

Question

Hi,
Is it possible to define infix operators for object types?
Example:
CREATE TYPE BODY Complex AS
   MEMBER operator + (x Complex) RETURN Complex IS
   BEGIN
      RETURN Complex(rpart + x.rpart, ipart + x.ipart);
   END plus;
Usage:
  given a table E (C1 Complex, C2 Complex)
Select C1+C2 from E;
Kind regards
Taouik

Answer 1

An "object type" is nothing but a an o-o class. Can you create SQL constraints on o-o classes? Usually not. Oracle is no different.
Where do you create constraints in Oracle? On tables. And yes, an o-o class (object type) can be used to create a table (aka an object table). That table can have any of the standard SQL constraints supported by Oracle.