I understand curiosity behind finding out how pega handles it, but instead of spending the time on this its good to work on the synch strategy as it is inevitable.

Thanks, this situation is a bit tricky while we are looking at solutions, I posted this question in parallel :).  

Can anyone from pega side, please give insight on this. Thanks.

Hello Peegaster,

Although I am not from pega company, just wanted to mention few things since it is a intresting tricky question.

Firstly pega does not force you to have class TOP-FOO- to have a class TOP-FOO-XYZ. So really pattern inheritance does not search TOP-FOO- is present or not when we reference a rule with class TOP-FOO-XYZ. If TOP-FOO- is missing the next level in pattern inheritance for TOP-FOO-XYZ is TOP-.

If the class mentioned in the direct inheritance of a class definition is missing, we can expect exceptions at run time and design time. but direct inheritance failure occurs only when the rule resolution searches for a rule in direct inheritance path.

Also, since applications have rules scattered across different class layers, as you mentioned failures are expected :)

Thanks,

Ashok

Thanks Ashok.