There was a bug fitting this description fixed for Jess 5.0a3; upgrade
and you should be fine. The error message is an internal error which
basically means that the Rete network has reached an impossible state
and therefore Jess must have a bug.
I think Juan Luis Mulas Platero wrote:
>
> Hi jess-users.
>
> We have developed an intelligent agent architecture whose reasoning
> capacity is given by JESS. The architecture was developed with JESS 4.x
> version and all seems to go well.
>
> Now we are trying to change from version 4.x to 5.0 (using the 5.0a2
> version) but we have a problem when retracting one unordered fact. The
> fact is asserted from Java code in a way similar to other facts which
> are retracted wiht success. Even other facts with similar type to the
> problematic one are well retracted.
>
> The exception error given when retrating the fact is similar to the
> next:
>
> Rete Exception in routine NodeNot2::RunTestsVaryLeft while executing
> rule LHS: [NodeNot2 ntests=1 [Test2Simple:
> test=EQ;tokenIdx=1;leftIdx=4;rightIdx=11] ;usecount = 1] while executing
> defrule "DeleteReceivedMessagesWhenGoalSuccess."
> Message: Corrupted Negcnt (< 0) at line 0: .....
>
> I know it is not enough information to solve our problem, but it is
> complex to extract a little example from the complete architecture.
> So, does anybody suffer the same problem retracting some unordered
> facts?
> Does anybody have any idea about what is happening?
> Could someone explain us the meaning of the message error with more
> datail?
>
> Thanks in advance.
>
> Juan Luis Mulas Platero
> Spain.
>
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Ernest Friedman-Hill
Distributed Systems Research Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
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PO Box 969 http://herzberg.ca.sandia.gov
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