[rules-users] Conditional 'not' invalid for event streams?

[Edson Tirelli]

   Barry,

   I did not run the code bellow, but drools uses the temporal distance
algorithm to calculate how much time it has to wait on a "delaying not"
before activating the rule. So, the first question I have is what are you
using as timestamp for the events? the time they are inserted into the
engine or a timestamp attribute?

   []s
   Edson



2009/8/30 Barry Kaplan <groups1 at memelet.com>

>
> After looking at ../integrationtests/test_CEP_DelayingNot.drl I'm getting
> closer, but not really understanding. I can get a greenbar with the below.
> However if change the last advanceTime() value to anything less than 30 the
> test fails. So it seems that the the conditional not clause does not start
> its window until the first two clauses are true.
>
> Why would this be? Why does it not start ticking when the first StartEvent
> is inserted?
>
> ----
> rule "[every s->f&&!a] How do I use patterns to correlate events arriving
> in-order or out-of-order?"
> when
>        $se : StartEvent($exchangeId : exchangeId)
>                from entry-point "stream"
>
>        $fe : FinishedEvent(exchangeId == $exchangeId, this after[0s,30s]
> $se)
>                from entry-point "stream"
>
>        not (AbortedEvent(exchangeId == $exchangeId, this after[0s,30s] $se)
>                from entry-point "stream")
> then
>        results.put("startEvent", $se);
>        results.put("finishedEvent", $fe);
> end
> ----
>        @Test
>        def void
>
> How_do_I_use_patterns_to_correlate_events_arriving_in_order_or_out_of_order__B()
> {
>                insert new StartEvent(id: "se1", exchangeId: "BBB")
>                advanceTime 10, SECONDS
>                fireAllRules()
>                assert results.isEmpty()
>
>                advanceTime 10, SECONDS
>                insert new FinishedEvent(id: "fe1", exchangeId: "BBB")
>                fireAllRules()
>                assert results.isEmpty()
>
>                advanceTime 30, SECONDS
>                assert results["startEvent"].id == "se1"
>                assert results["finishedEvent"].id == "fe1"
>        }
> ----
> --
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>
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-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss by Red Hat @ www.jboss.com
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