[rules-users] Problem with memberOf and/or eval used in collect statement
Edson Tirelli
tirelli at post.com
Tue Sep 18 17:12:04 EDT 2007
Chris,
Ok, 1203 is in the pipeline too...
[]s
Edson
2007/9/18, Chris West <crayzfishr at gmail.com>:
>
> The fix for 1115 and fix for 1204 you're working will not help me unless
> 1203 is fixed, because all versions of code after 4.0.0 are affected by
> 1203, and it is a showstopper for me since I use JDK dynamic proxies as
> facts.
>
> -Chris
>
> On 9/18/07, Edson Tirelli <tirelli at post.com> wrote:
> >
> >
> > Chris,
> >
> > Do you really need to "collect" all these facts? Are you doing
> > anything with these lists? It would be easier if you can show me the full
> > rule, but seems to me that maybe you can avoid some or all of these
> > collects. Remember that collect is a heavy CE, so it is always good to avoid
> > when possible.
> >
> > Anyway, there should be no problem if you use eval(). The problem in
> > JBRULES-1204 only affects memberOf operator, since the fix I implemented in http://jira.jboss.org/jira/browse/JBRULES-1115
> > fixed the eval()s.
> >
> > I will fix 1204 asap.
> >
> > []s
> > Edson
> >
> >
> > 2007/9/18, Chris West < crayzfishr at gmail.com>:
> > >
> > > 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
> > > >
> > > >
> > >
> > > _______________________________________________
> > > 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
> >
> >
>
> _______________________________________________
> 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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20070918/09381e0a/attachment.html
More information about the rules-users
mailing list