[rules-users] Accumulate x No-loop

[Edson Tirelli]

    Hi Alessandro, just saw your e-mail and answered to you, but basically
no-loop will not work for cases like this.
    Either specify your constraints in a way they prevent the loop or use
lock-on-active.

rule "Nota final das questoes"
   when
       $qr : QuestionarioResposta( $nf : notaFinal )
       $result : Number( this != $nf )
                     from accumulate(
QuestaoResposta($nota:nota,$peso:questao.questaoPeso.peso)
                                          from $qr.questoesResposta,
                                          sum( $nota * (Double)$peso )
)                then
       modify( $qr ) {
              setNotaFinal($result)
       }
end

    Hope it helps.
        Edson


2008/5/5 Alessandro Lazarotti <alessandro at siq.com.br>:

> It's a bug?
>
> Alessandro Lazarotti escreveu:
>
>  Sorry, my code is ugly in last email...
> > This is more clean:
> >
> > rule "The Rule"
> >   no-loop true
> >   when
> >
> >       questionarioResposta : QuestionarioResposta()
> >
> >        $resultFinal : Number() from
> > accumulate(QuestaoResposta($peso:questao.questaoPeso.peso)
> >                                          from
> > questionarioResposta.getQuestoesResposta(),
> >                                          sum( $peso ))
> >   then
> >       System.out.println($resultFinal);
> >       update( questionarioResposta );
> > end
> >
> > This is a recursive and no-loop is ignored.
> > Who knows why this?
> >
> > Thanks
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Alessandro Lazarotti escreveu:
> >
> > > Hi
> > > When I use accumulate and update, no-loop is ignored and the rule is
> > > recursive.
> > > Why?
> > >
> > > The Rule:
> > >
> > > rule "Nota final das questoes"
> > >    no-loop true
> > >    when
> > >
> >
> >
> >
> >
> >
> >
> >
> > >        questionarioResposta : QuestionarioResposta()
> > >        $result : Number() from
> > > accumulate(QuestaoResposta($nota:nota,$peso:questao.questaoPeso.peso)
> > >                                           from
> > > questionarioResposta.getQuestoesResposta(),
> > >           sum($nota * (Double)$peso))
> > >                                                    $resultFinal :
> > > Number() from
> > > accumulate(QuestaoResposta($nota:nota,$peso:questao.questaoPeso.peso)
> > >                                           from
> > > questionarioResposta.getQuestoesResposta(),
> > >           sum( $peso ))
> > >            then
> > >        System.out.println($result.doubleValue() /
> > > $resultFinal.doubleValue());
> > > questionarioResposta.setNotaFinal($result.doubleValue() /
> > > $resultFinal.doubleValue());
> > >        update( questionarioResposta );
> > > end
> > >
> > > _______________________________________________
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> > > rules-users at lists.jboss.org
> > > https://lists.jboss.org/mailman/listinfo/rules-users
> > >
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-- 
Edson Tirelli
JBoss Drools Core Development
Office: +55 11 3529-6000
Mobile: +55 11 9287-5646
JBoss, a division of Red Hat @ www.jboss.com
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