RE: [rules-users] Inline eval problem!

I don’t know your circumstances, but you might question why rank is a String in the first place. Is the UI unduly influencing your data model? You could always add a synthetic getter to your model itself and evade the eval altogether: public int getRankInt() { … } That’s an ugly hack, but if your rank attribute is really an integer anyway… In any case, I’d suggest that you add a guard in your conversion utility to check for “” and null Strings maybe default to 0 or throw some exception. Cheers, -Jess From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of M.DILIP KUMAR Sent: Tuesday, December 02, 2008 5:40 AM To: Rules Users List Subject: Re: [rules-users] Inline eval problem! Hi , i can suggest one more way to solve it. Dont create instance in when part. Instead of better you convert that helper class method as static methods. So that u can call that method directly . but before that u should import that helper class in drl file. Or second way u can directly write a method in ur drl file itself. Example : import com.g2x.agility.leads.workflow.rulesengine.RuleUtilities; rule"ConvertRule" when eval ( RuleUtilities.getStringToInteger( age) > 40) // getStringToInteger(String age) is static method then System.out.print("XXXXName"); end Defeat yourself today! ____________________________ DILIP KUMAR.M --- On Tue, 2/12/08, vanshi <nilu.thakur(a)gmail.com&gt; wrote: From: vanshi <nilu.thakur(a)gmail.com&gt; Subject: [rules-users] Inline eval problem! To: rules-users(a)lists.jboss.org Date: Tuesday, 2 December, 2008, 10:38 AM I need to convert a variable from string to intger in the rule. That variable here is rank, so, I create a helper class called 'Conversion' with just one function/method, which is supposed to convert the string argument passed to it, to an integer and then I call that method in rule as inline eval. What's wrong here because this is not working and I don't want to change 'When' part too much because it has 10 or so other variable with && connective, which I've removed for clarity here. Any input would be appreciated much. package harules; import com.hibernate.Person; import com.uhg.utils.Conversion; rule "one" salience 10 when $con: Conversion(); pers: Person(age!= null , age >= 18 , eval($con.getInteger(rank) > 140)) then System.out.println("Evaluated true"); end //content of Conversion class package com.utils; public class Conversion { public Integer getInteger(String s) { return Integer.parseInt(s); } } -- View this message in context: http://www.nabble.com/Inline-eval-problem%21-tp20786253p20786253.html Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ________________________________ Add more friends to your messenger and enjoy! Invite them now. <http://in.rd.yahoo.com/tagline_messenger_6/*http:/messenger.yahoo.com/inv...