Re: [rules-users] Rule problem

From: Femke De Backere <femmyke(a)gmail.com&gt; Subject: Re: [rules-users] Rule problem To: "Rules Users List" <rules-users(a)lists.jboss.org&gt; Date: Monday, May 4, 2009, 6:00 PM I have another little problem. I try to do the same with a ruleflow (and BMI rules in ruleflow group) and my ruleflow starts running and the rules are triggered, but I get no system.out.println(...) and mijn flow doesn't continue to the next node. Any suggestions? Femke Op 4-mei-09, om 23:30 heeft Greg Barton het volgende geschreven: > > I wonder if there's some way to introduce strictfp into the drl. > (I'm not even sure if that would even solve the problem. But I > figure it'd get you in the ballpark.) But I think it would be > useful to be able to inject strictfp into the declarations of any > generated drools classes. > > --- On Mon, 5/4/09, Femke De Backere <femmyke(a)gmail.com&gt; wrote: > >> From: Femke De Backere <femmyke(a)gmail.com&gt; >> Subject: Re: [rules-users] Rule problem >> To: "Rules Users List" <rules-users(a)lists.jboss.org&gt; >> Date: Monday, May 4, 2009, 4:11 PM >> I solved the problem by removing every double in the >> sample.drl. How >> van I fix the double problem if I really wanted to :)? In >> this case it >> is unnecassary but there must be a solution? >> >> Thanks for all the help! >> >> Femke >> >> Op 4-mei-09, om 21:48 heeft Wolfgang Laun het volgende >> geschreven: >> >>> Don't use doubles. Try the same thing, scaling the >> random weights >>> with 10 (or 100) convert to int, and use suitably >> scaled integer >>> limits for your weight classes. >>> >>> I'm not at all sure, what various JVM versions >> and/or Rand >>> generators could produce. >>> >>> The javadoc for java.lang.Math is an indicator that >> things might not >>> be as simple as they ought to be. >>> >>> I could reproduce the problem this afternoon, but now >> I can't any >>> more, on the same machine, same JVM and same Drools >> version. >>> >>> -W >>> >>> >>> 2009/5/4 Femke De Backere <femmyke(a)gmail.com&gt; >>> So, I did as you suggested, with the following as >> result: >>> BMI of 10 U heeft ondergewicht: 10 >>> BMI of 30 U heeft ondergewicht: 30 >>> BMI of 30 U heeft obesitas: 30 >>> BMI of 20 U heeft ondergewicht: 20 >>> >>> So, I really don't get it, I used exactly the same >> code as you. >>> >>> Femke >>> >>> Op 4-mei-09, om 17:11 heeft Greg Barton het volgende >> geschreven: >>> >>>> >>>> Well, approach this systematically, then: Create a >> new Drools >>>> project in Eclipse and replace the DroolsTest.java >> and Sample.drl >>>> with the ones I sent before. What results do you >> get? If they are >>>> correct, modify the project one step at a time >> until the problem is >>>> uncovered. >>>> >>>> One place to focus on: you're using rule >> flows. I have no idea how >>>> that could cause a false positive result like >> you've seen, but you >>>> never know. >>>> >>>> Finally, if you're comparing performance of >> rules vs plain java, >>>> plain java will easily win in this case. The rule >> of thumb is >>>> this: if you can easily write a plain non-rules >> algorithm it will >>>> outperform the rules solution. >>>> >>>> --- On Mon, 5/4/09, Femke De Backere >> <femmyke(a)gmail.com&gt; wrote: >>>> >>>>> From: Femke De Backere >> <femmyke(a)gmail.com&gt; >>>>> Subject: Re: [rules-users] Rule problem >>>>> To: "Rules Users List" >> <rules-users(a)lists.jboss.org&gt; >>>>> Date: Monday, May 4, 2009, 6:53 AM >>>>> I'm using this: >>>>> package bmi >>>>> >>>>> import bmi.DroolsTest.BMIClass; >>>>> >>>>> rule "Overgewicht" >>>>> ruleflow-group "BMIrules" >>>>> when >>>>> bmiClass : BMIClass($bmi: bmi >= 25, bmi >> < 30) >>>>> then >>>>> System.out.println("U heeft >> overgewicht: " + >>>>> $bmi); >>>>> end >>>>> >>>>> rule "Obesitas" >>>>> ruleflow-group "BMIrules" >>>>> when >>>>> bmiClass : BMIClass($bmi : bmi >= 30) >>>>> then >>>>> System.out.println("U heeft obesitas: >> " + >>>>> $bmi); >>>>> end >>>>> >>>>> >>>>> rule "Ondergewicht" >>>>> ruleflow-group "BMIrules" >>>>> when >>>>> bmiClass : BMIClass($bmi : bmi < 18.5) >>>>> then >>>>> System.out.println("U heeft >> ondergewicht: " + >>>>> $bmi); >>>>> end >>>>> >>>>> >>>>> rule "Normaal" >>>>> ruleflow-group "BMIrules" >>>>> when >>>>> bmiClass : BMIClass($bmi : bmi >= 18.5, >> bmi < 25) >>>>> then >>>>> System.out.println("U heeft een normaal >> gewicht: >>>>> " + $bmi); >>>>> end >>>>> >>>>> But in essence it is the same as Greg's. I >> get outputs >>>>> as: >>>>> >>>>> U heeft ondergewicht: 25.0 >>>>> U heeft overgewicht: 25.0 >>>>> >>>>> But I really don't see the problem. >>>>> >>>>> Femke >>>>> >>>>> Op 4-mei-09, om 13:25 heeft Wolfgang Laun het >> volgende >>>>> geschreven: >>>>> >>>>>> 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(a)gmail.com&gt; >>>>>> 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(a)gmail.com&gt; wrote: >>>>>> >>>>>> From: Femke De Backere >> <femmyke(a)gmail.com&gt; >>>>>> Subject: Re: [rules-users] Rule problem >>>>>> To: "Rules Users List" >>>>> <rules-users(a)lists.jboss.org&gt; >>>>>> 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"); >>>>>> >>>>>> end >>>>> >> _______________________________________________ >>>>>> rules-users mailing list >>>>>> rules-users(a)lists.jboss.org >>>>>> >>>>>> >> https://lists.jboss.org/mailman/listinfo/rules-users >>>>>> >>>>>> >> _______________________________________________ >>>>>> rules-users mailing list >>>>>> rules-users(a)lists.jboss.org >>>>>> >> https://lists.jboss.org/mailman/listinfo/rules-users >>>>>> >>>>>> >> _______________________________________________ >>>>>> rules-users mailing list >>>>>> rules-users(a)lists.jboss.org >>>>>> >> https://lists.jboss.org/mailman/listinfo/rules-users >>>>>> >>>>>> >>>>>> < >>>>>> DroolsTest >>>>>> >>>>> >> .java><Sample.drl>_______________________________________________ >>>>>> rules-users mailing list >>>>>> rules-users(a)lists.jboss.org >>>>>> >> https://lists.jboss.org/mailman/listinfo/rules-users >>>>>> >>>>>> >>>>>> >> _______________________________________________ >>>>>> rules-users mailing list >>>>>> rules-users(a)lists.jboss.org >>>>>> >> https://lists.jboss.org/mailman/listinfo/rules-users >>>>>> >>>>>> >>>>>> >> _______________________________________________ >>>>>> rules-users mailing list >>>>>> rules-users(a)lists.jboss.org >>>>>> >> https://lists.jboss.org/mailman/listinfo/rules-users >>>>> >>>>> >> _______________________________________________ >>>>> rules-users mailing list >>>>> rules-users(a)lists.jboss.org >>>>> >> https://lists.jboss.org/mailman/listinfo/rules-users >>>> >>>> >>>> >>>> _______________________________________________ >>>> rules-users mailing list >>>> rules-users(a)lists.jboss.org >>>> >> https://lists.jboss.org/mailman/listinfo/rules-users >>> >>> >>> _______________________________________________ >>> rules-users mailing list >>> rules-users(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >>> >>> _______________________________________________ >>> rules-users mailing list >>> rules-users(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-users >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users