CORBA24 — DynUnion incomplete

given the a DynUnion value, I want to find out whether the discriminator
currently indicates the default case. For example:

union u switch (long)

;

For this union, I want to know whether the default member is active, that is,
whether the discriminator has a value other than 0, 1, or 2.

Finding out whether the discriminator indicates the default case is currently
rather difficult. I have to:

1) get the union type code
2) collect the values of all the explicit case labels from
the type code
3) check if the discriminator currently has a value that is not
one of the explicit case labels values

It would be much nicer to add the following to DynUnion:

interface DynUnion : DynAny

;

The is_set_to_default_case operation returns true if a union has
an explicit default label and the discriminator value does not
match any of the union's other case labels.

Add the is_set_to_default_member function with the functionality as described for is_set_to_default_