Hi folks!
First time in this mailing-list, with very
little experience in Drools (Fusion, regarding CEP).
I hope that someone could help me out J
I’ve being investigating about this
issue and I’m not getting any answer.
Here’s
the problem:
I’ve got a DRL file with a simple
rule:
rule “....”
when
$offline
: Event( code == "101", $offlineLane
: lane ) from entry-point "incoming"
not (
$online : Event(code == "102",
lane == $offlineLane, this after [0s,3m]
$offline ) from entry-point "incoming" )
then
//
some code here
end
What I want is: when there’s an
offline for more than 3 minutes *without* any online event (meanwhile),
that execute the rule.
I’ve got JUnits, with Drools
configured with STREAM mode and PSEUDO clock.
All is good in JUnit world except in this
testcase:
·
Insert an offline event (workingMemoryEntryPoint.insert(
offlineEvent );)
·
Clock advances 2m50s (clock.advanceTime(2,TimeUnit.MINUTES );clock.advanceTime(50,
TimeUnit.SECONDS );)
·
Insert an online event (workingMemoryEntryPoint.insert(
onlineEvent );)
·
Clock advances 0m15s (clock.advanceTime(15,TimeUnit.SECONDS );)
·
Assertion error: the rule runs
when it shouldn’t (online event cancels offline event).
I’ve got no clue about this but I
have some more interesting info:
·
When clock advances 0m15s,
there’s an NPE on a LinkedList:
java.lang.NullPointerException
at
org.drools.util.LinkedList.remove(LinkedList.java:113)
at
org.drools.common.Scheduler$DuractionJob.execute(Scheduler.java:71)
at
org.drools.time.impl.PseudoClockScheduler$ScheduledJob.call(PseudoClockScheduler.java:219)
at
org.drools.time.impl.PseudoClockScheduler.runCallBacks(PseudoClockScheduler.java:168)
at
org.drools.time.impl.PseudoClockScheduler.advanceTime(PseudoClockScheduler.java:130)
·
I haven’t any code/rule that
retracts events (I shouldn’t have it for this case, right?)
·
I’ve tried Drools 5.0.1
and 5.1.0.M1, with the same results
·
The issue causing NPE, I’ve
found an old issue regarding Drools 3.0.4 and the bug was corrected in 3.0.5 (https://jira.jboss.org/jira/browse/JBRULES-455)
·
I think that someone wrote
about this error (in Drools 5) but I don’t have the link to it.
Thanks In Advance!
Best regards,
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Vítor
Mendonça Moreira |
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