Has anyone been able to refine an association?

[buddy robbins]

I'm trying to specialize an association.  A good example why would be this:

I've got an abstract base class called Sport that has an aggregation relationship with an abstract base class called Official.

Now I create a class called Baseball that is derived from Sport, and a class called Umpire that is derived from Official.  

I can also create a class called Football, derived from Sport, and a class called Referee that is derived from Official.

Without the refinement of the aggregation relationship, it would be possible to assign a instance of Referee to an instance of Baseball.

In the past (pre-EA), I was able to do that with a <<refine>> relationship between 2 associations, but I can't seem to do that in EA.  Any suggestions?

Thanks in advance,
-Buddy Robbins

[Geert Bellekens]

Buddy,

Right-click on association|Advanced|Specialize associations... should do the trick.
There are some restrictions, but I don't remember exactly what they were. I guess the manual should exaplain those.

Geert

[Paolo F Cantoni]

...
There are some restrictions, but I don't remember exactly what they were. I guess the manual should explain those.

Geert

The subsets labels may not render on reflexive relationships - all relationships are equal, but some (obviously) are more equal than others.  Check the label visibility.

The connector display type must be UML 2.1  (IE and IDEF1X won't work).

Not explained, Jan

HTH,
Paolo

[buddy robbins]

Thanks folks.

It's not exactly the visual representation I was expecting, but as long as it displays the info, how can I complain.

-Buddy.