[rules-users] Help Problem with kind of minimization

[Edson Tirelli]

   Ops, copy&paste problem. The correct rule is:

rule "get closer object"
when
    $a : Agent( $num1 : num )
    $b : Poste( $num2 : num )
    not Poste( $num3 : num -> ( abs( $num1, $num3 ) < abs( $num1, $num2 ) )
)
then
    // do something
end

   []s
   Edson

2007/5/3, Edson Tirelli <tirelli at post.com>:
>
>
>     Hi,
>
>     If you are using 4.0.0.M2, I think this will do the job:
>
> function abs( int a, int b ) {
>     return Math.abs( b - a );
> }
>
> rule "get closer object"
> when
>     $a : Agent( $num1 : num )
>     $b : Poste( $num2 : num )
>     not Poste( $num3 : num -> ( abs( $num1, $num3 ) < Math.abs( $num1,
> $num2 ) ) )
> then
>     // do something
> end
>
>     If you are using 3.0.x, then it would be like:
>
> function abs( Integer a, Integer b ) {
>     return Math.abs( b.intValue() - a.intValue() );
> }
>
> rule "get closer object"
> when
>     $a : Agent( $num1 : num )
>     $b : Poste( $num2 : num )
>     not Poste( $num3 : num -> ( abs( $num1, $num3 ) < Math.abs( $num1,
> $num2 ) ) )
> then
>     // do something
> end
>
>     Hope it helps. Let us know if it works the way you need.
>
>     []s
>     Edson
>
>
> 2007/5/3, l'ami molette <l_ami_molette at hotmail.com>:
> >
> >  Hi, I'm a new user of JBossRules, and I have difficulties to solve a
> > problem using jBossRules.
> >
> >
> >
> > I have two classes (AClass.java & Bclass.java). Each one have a number
> > (an "int" value (AClass.getNum() & BClass.getNum())
> >
> > , and I want to extract a Aclass & a Bclass witch have the closest
> > numbers. In fact I want to minimize the value:
> >
> > Math.abs(AClass.getNum() - BClass.getNum()).
> >
> >
> >
> > I tried to write a rule like this:
> >
> >
> >
> > rule "My rule"
> >
> >             when
> >
> >                         ACl : Agent ($AClNum : num , $AClNom : nom)
> >
> >                         BCl : Poste ($BClNum : num , $BClNom : nom)
> >
> >                         BCl2 : Poste ()
> >
> >                         not Agent($ACl2Num : num ->
> > (Aminor(CalculAbsolue($ACl2Num.intValue(),BCl2.getNum()) ,
> > CalculAbsolue($AClNum.intValue(),$BClNum.intValue()) )))
> >
> >             then
> >
> >                         System.out.println("Selected : "+ ACl.getName()
> > +" "+BCl.getName()+" diff: "+ CalculAbsolue(ACl.getNum(),BCl.getNum()));
> >
> >                         retract(ACl);
> >
> >                         retract(BCl);
> >
> > end
> >
> >
> >
> >     function int CalculAbsolue(int a, int b){
> >
> >             return Math.abs(b-a);
> >
> >     }
> >
> >
> >
> >     function boolean Aminor(int a, int b){
> >
> >             return a < b;
> >
> >     }
> >
> >
> >
> >     --> But the rule doesn't work.
> >
> >     Does anyone have an idea to solve my problem?
> >
> >     Thank you very much for your help.
> >
> >     Olivier Lafon
> >
> >
> >
> > PS : (excuse my English, I'm French)
> >
> > ------------------------------
> > Essayez Live.com, votre nouvelle page d'accueil ! Personnalisez-la en
> > quelques clics pour retrouver tout ce qui vous intéresse au même endroit. au
> > même endroit. <http://www.live.com/getstarted>
> >
> > _______________________________________________
> > 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




-- 
  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
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