[rules-users] Possible bug with isA operator

[Mike Melton]

> The drawback here is
> that your legacy bean must implement equals() ad hashCode() appropriately,
> considering that an object might be compared not just with itself or objects
> of the same class, but also with instances of proxy subclasses.

Ah! I missed that important point. I had actually tried something
similar to your alternative earlier, but it wasn't working. Now I
understand why. I can update my equals/hashCode implementations so
they will work with proxy subclasses.

Excellent!

Mike