Re: [rules-users] Help Problem with kind of minimization

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, $num2 ) ) ) then // do something end Hope it helps. Let us know if it works the way you need. []s Edson 2007/5/3, l'ami molette <l_ami_molette(a)hotmail.com&gt;: > > Hi, I'm a new user of JBossRules, and I have difficulties to solve a > problem using jBossRules. > > > > I have two classes (AClass.java & Bclass.java). Each one have a number > (an "int" value (AClass.getNum() & BClass.getNum()) > > , and I want to extract a Aclass & a Bclass witch have the closest > numbers. In fact I want to minimize the value: > > Math.abs(AClass.getNum() - BClass.getNum()). > > > > I tried to write a rule like this: > > > > rule "My rule" > > when > > ACl : Agent ($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(a)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