[rules-users] threw error java.lang.ClassCastException: org.drools.reteoo.FromNode$FromMemory cannot be cast to org.drools.reteoo.BetaMemory

[mohdejaz74]

In my case, I dynamically add/remove/exec rules at run-time. KnowledgeBase
instance is constantly updated.

When a rule needs to be added or removed, I do it in temporary
KnowledgeBuilder instance. If there are no errors, I update main
KnowledgeBase instance using "addKnowledgePackages". I did'nt get any errors
... 

I do understand that this may be due to KB corruption. I use hasErrors() &
getErrors() to check if there are any errors. Do I need to check something
else?

Regards
Ejaz



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