RE: [rules-users] Using java.util.List in rules

If you're using Java dialect, you should be able to use eval (for which I think MVEL provides syntax sugar???):- rule "Test" when $e : Especialista() eval($retratoUser.lstCarac.get(0).codCarac != 0 ) then System.out.println ("test"); end or return value expressions (if I'm correct):- rule "Test" when $e : Especialista( ($retratoUser.lstCarac.get(0).codCarac != 0 ) ) then System.out.println ("test"); end Somebody correct me if I'm completely wrong (I'm trying to refresh myself following a stay of absence). _____ From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Edson Tirelli Sent: 03 October 2007 01:40 To: Rules Users List Subject: Re: [rules-users] Using java.util.List in rules You can't explicitly call methods in the field name. Use MVEL special notation for lists: e : Especialista(retratoUser.lstCarac[0].codCarac != 0) []s Edson 2007/10/2, Anderson Pazza Mello <payakahn(a)gmail.com&gt;: Hi everyone, I'm trying to use a java.util.List like this: rule "Test" when e : Especialista(retratoUser.lstCarac.get(0).codCarac != 0) then System.out.println ("test"); end The property lstCarac is a java.util.List<Caracteristica>. I'm getting this error : org.drools.rule.InvalidRulePackage: [18,44]: unknown:18:44 Unexpected token '0'[18,46]: unknown:18:46 Unexpected token '.' at org.drools.rule.Package.checkValidity(Package.java:419) Someone knows what i have to do to fix the problem?? -- Anderson Pazza Mello Tecnologia em Informática - UFPR _______________________________________________ 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