[rules-users] java.lang.ClassCastException: org.drools.reteoo.BetaMemory cannot be cast to org.drools.reteoo.AlphaNode$AlphaMemory

[Davide Sottara]

The original thread was for a bug in 5.0.x, fixed in 5.1, but it would be a
very serious issue in 5.5. It basically means that the local memory of a
beta node has been assigned to an alpha node, or that the wrong memory had
been retrieved. In any case, the rete is broken: wrong facts or types would
be joined in a different order or way than stated by the rules.

Is this something you're experiencing , or just worried that it may happen?

Causes could be an invalid rule in the first place (running the engine
without checking for compilation errors), a bug in the construction process
(unlikely, unless the rule is a very rare edge case), or a complex scenario
where you add and remove rules dynamically from a knowledge base.
On May 1, 2013 2:25 PM, "dcrissman" <dcrissman at redhat.com> wrote:

> Could you explain what you mean by rete corruption? I am familiar with
> rete,
> but hardly an expert. I am not really doing anything too complicated, I
> guess some runtime inserts and retracts.
>
> I tried 6.0.0.Beta2, but that has more api changes then I am prepared to
> handle, I'll wait until the Final version.
>
> As for 5.6.0-SNAPSHOT, I am having trouble pulling it down. I will pick
> that
> up tomorrow.
>
> In the meantime, any clarification to the rete question would be
> appreciated.
>
> Thanks,
> Dennis
>
>
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/java-lang-ClassCastException-org-drools-reteoo-BetaMemory-cannot-be-cast-to-org-drools-reteoo-AlphaNy-tp4023610p4023612.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20130501/c45ecec9/attachment.html