I cannot reproduce your findings.
Which bmi values cause the firing of two rules?
Are you using exactly the same .drl file Greg sent?
-W

2009/5/4 Femke De Backere <femmyke@gmail.com>

Thanks for the answer! But I sometimes get 2 rules that are correct, and that is impossible. I embedded Greg's DroolsTest class in my class (I am doing some test on performance and studying the difference between performance with a plain java class), and it still doesn't work, and I really don't see why. Anyone any suggestions, in attachement, my class.

Thx,

Femke




Op 4-mei-09, om 02:47 heeft Greg Barton het volgende geschreven:

Try the attached code.

--- On Sun, 5/3/09, Femke De Backere <femmyke@gmail.com> wrote:

From: Femke De Backere <femmyke@gmail.com>
Subject: Re: [rules-users] Rule problem
To: "Rules Users List" <rules-users@lists.jboss.org>
Date: Sunday, May 3, 2009, 6:18 PM
Thx for the answer. I tried this but I doesn't seem to
work. For a BMI of 20, i get the result
"ondergewicht", and it should be
"normal".

Op 4-mei-09, om 01:04 heeft Ingomar Otter het volgende
geschreven:

Femke,
The "Overgewicht| rule matches for _two_ BMIClass

facts, one with bmi >- 25 and one for BMIClass <30.

If you want to apply multiple  constraints to a single

fact you have to list them as such:

rule "Overgewicht"
       when
               bmiClass : BMIClass(bmi >= 25 && bmi

<30)

       then
               System.out.println("U heeft

overgewicht");

end

Cheers,
Ingomar


Am 04.05.2009 um 00:48 schrieb Femke De Backere:

Hi!

I want to make en BMI rule application, so I need

to test the BMI values. But in rule "Overgewicht"
and "Normaal", I need to use an AND, but it
doesn't seem to work in any way I tried.

Does anybody see the problem? The rest of the

application is based on de sample project (created when
making a new Drools project).

Thx,

Femke

package bmi

import bmi.DroolsTest.BMIClass;

rule "Overgewicht"
       when
               bmiClass : BMIClass(bmi >= 25)
               bmiClass : BMIClass(bmi < 30)
       then
               System.out.println("U heeft

overgewicht");

end

rule "Obesitas"
       when
               bmiClass : BMIClass($bmi : bmi >= 30)
       then
               System.out.println("U heeft

obesitas");

end            
               
rule "Ondergewicht"
       when
               bmiClass : BMIClass($bmi : bmi < 18.5)
       then
               System.out.println("U heeft

ondergewicht");

end    
               
rule "Normaal"
       when
               bmiClass : BMIClass(bmi >= 18.5)
               bmiClass : BMIClass(bmi < 25)
       then
               System.out.println("U heeft een normaal

gewicht");

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