[rules-users] Problem with memberOf and/or eval used in collect statement

[Chris West]

Edson,

So now my dilemma is that I cannot use 4.0.0 due to JBRULES-1204, but I
cannot use 4.0.1 or 4.0.2-SNAPSHOT due to JBRULES-1203.  Below is an actual
block from my rule.  I'd like to transform it into something like
"TestEval2" from my example, but it is more complicated.  Can it be
rewritten like "TestEval2"?

        $sorties: ArrayList() from collect (AirPlanSortie(event ==
$currentEvent, spare == false, superSpare == false))

        $statuses: ArrayList($sortieSize: size) from collect
(SortieStatus(state != SortieState.CANCELLED, $sortie1: sortie, eval
($sorties.contains($sortie1))))

        $launches: ArrayList(size > 0, size == $sortieSize) from collect
(LaunchAircraftStatus(launched == true, $sortie0: sortie,
eval($sortie0.getEvent().equals($currentEvent))))

-Chris


On 9/18/07, Edson Tirelli <tirelli at post.com> wrote:
>
>
>     Chris,
>
>     Thanks for reporting this.
>
>     I fixed a bug in 4.0.0 (released in 4.0.1) that causes you to see the
> correct value for "TestEval1" in 4.0.1 and later versions. Although, at
> that time I missed the memberOf scenario. I know why it happens (shadow fact
> related), but now I need to figure out a way to fix it.
>
>     May I ask you to open a ticket for that?
>
>     Thanks,
>       Edson
>
>
> 2007/9/18, Chris West <crayzfishr at gmail.com>:
> >
> > All,
> >
> > I'm having a problem using memberOf combined with a collect statement.
> > My test includes 3 rules each written to output the same results (I think),
> > but I get different results (depending on which version of Drools I use).
> >
> > The rules are:
> >
> >
> > rule "TestMemberOf"
> >     salience 10
> >     when
> >         $messages: ArrayList() from collect (Message(status == 100))
> >         $wrappers: ArrayList() from collect (Wrapper(message memberOf
> > $messages))
> >     then
> >         System.out.println("TestMemberOf: " + $wrappers.size());
> > end
> >
> > rule "TestEval1"
> >     salience 9
> >     when
> >         $messages: ArrayList() from collect (Message(status == 100))
> >         $wrappers: ArrayList() from collect (Wrapper($message: message,
> > eval($messages.contains($message))))
> >     then
> >         System.out.println("TestEval1: " + $wrappers.size());
> > end
> >
> > rule "TestEval2"
> >     salience 8
> >     when
> >         $wrappers: ArrayList() from collect (Wrapper($message: message,
> > eval($message.getStatus() == 100)))
> >     then
> >         System.out.println("TestEval2: " + $wrappers.size());
> > end
> >
> >
> >
> > The output is (by version):
> >
> > 4.0.0
> >
> > TestMemberOf: 0
> > TestEval1: 0
> > TestEval2: 2
> >
> > 4.0.1
> >
> > TestMemberOf: 0
> > TestEval1: 2
> > TestEval2: 2
> >
> > 4.0.2.SNAPSHOT (taken 9/18/07)
> >
> > TestMemberOf: 0
> > TestEval1: 2
> > TestEval2: 2
> >
> >
> > The correct output should be:
> >
> > TestMemberOf: 2
> > TestEval1: 2
> > TestEval2: 2
> >
> >
> > Am I using memberOf correctly?  Is there some issue using an eval to
> > test conditions on a list created by a collect?
> >
> > Any help would be appreciated.
> >
> > Attached is the full example.
> >
> > Thanks,
> > -Chris West
> >
> >
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
> >
>
>
> --
>   Edson Tirelli
>   Software Engineer - JBoss Rules Core Developer
>   Office: +55 11 3529-6000
>   Mobile: +55 11 9287-5646
>   JBoss, a division of Red Hat @ www.jboss.com
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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