[news.eclipse.modeling.mdt.uml2.uml] Re: creating new metaclasses

[Rafael Chaves <chaves@xxxxxxxxxxxxxxxxxx>]

Hi James,

> Unfortunately, you will have to either live with those warnings or
> re-implement UML (or those portions you are interested in).

I guess I can live with the warnings...

> I should point out one more painful fact:  if the underlying implementation
> of UML that you are dependent on changes, you might have problems.

But if I regenerate the model code every time a new UML2 build is 
adopted in our product (to ensure the implementation of our model 
extensions are coherent with the UML metamodel implementation), I should 
be safe, right?

> Heavy-weight extensions are discouraged for these reasons ( although it
> seems many people are doing it ;)   ).

I would prefer not to do this, but stereotypes are just too limited for 
the more interesting use cases.

> An article describing all the various ways to extend UML from using keywords
> to profiles to ultra-heavy weight extensions is almost complete and will be
> posted soon.

Great! If you need reviewers, count me in. Just let me know where to get 
a draft from.

Thanks,

Rafael