Hi All,
I have a Jess rule program which among other rules contains
"task-completion"
and "deactivate-task" rules (rule definitions are included below). When I
run my
rule program Jess throws the following exception:
Rete Exception in routine NodeNot2::RunTestsVeryLeft while execution rule
LHS: ...
...while executing defrule task-completion.
Message: Corrupted Negcnt (< 0) at line ...
Now, if I comment out the "deactivate-task" rule, the "task-completion" rule
will be executed without any problem.
I would appreciate any hints about this problem.
Thanks,
Dariush Navabi
Rule Definitions:
;; compound task completion/removal
(defrule task-completion
(declare (salience -1))
?t <- (task (taskName ?theTask))
;?at <- (activeTask (taskName ?theTask))
(hasSubTask (taskName ?theTask) (subTaskName ?theSubTask))
(not (task (parentTask ?theTask)))
=>
(printout t "Removing " ?theTask " from the agenda" crlf)
;(retract ?t ?at)
(retract ?t)
)
;; compound task deactivation
;;
(defrule deactivate-task
(declare (salience 1))
?at <- (activeTask (taskName ?theTask))
(not (task (taskName ?theTask)))
=>
(printout t "Deactivating" ?theTask crlf)
(retract ?at)
)
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