[rules-users] Using java.util.List in rules
Anderson Pazza Mello
payakahn at gmail.com
Wed Oct 31 05:40:10 EDT 2007
Do you know why? *
=)
2007/10/30, Anderson Pazza Mello <payakahn at gmail.com>:
>
> Yes I'm Brazilian....
> I need to improve my english I now hehehe
>
> About the problem... I solved it.
>
> But now I'm getting this error when I use a static property in the rules:
>
> Exception in thread "AWT-EventQueue-0" org.drools.RuntimeDroolsException:
> Exception executing predicate
> org.drools.base.mvel.MVELPredicateExpression at 916f80
> at org.drools.rule.PredicateConstraint.isAllowed(
> PredicateConstraint.java:197)
> at org.drools.reteoo.FromNode.assertTuple(FromNode.java:70)
> at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> SingleTupleSinkAdapter.java:29)
> at org.drools.reteoo.EvalConditionNode.assertTuple(
> EvalConditionNode.java:150)
> at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple (
> SingleTupleSinkAdapter.java:20)
> at org.drools.reteoo.FromNode.assertTuple(FromNode.java:87)
> at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> SingleTupleSinkAdapter.java:20)
> at org.drools.reteoo.FromNode.assertTuple (FromNode.java:87)
> at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> SingleTupleSinkAdapter.java:20)
> at org.drools.reteoo.FromNode.assertTuple(FromNode.java:87)
> .
> .
> .
>
> Caused by: org.mvel.PropertyAccessException: unable to resolve property:
> unable to resolve token: TipoCaracteristica.CABELO_TOTALMENTE_CALVO
> at org.mvel.ast.PropertyASTNode.initializePropertyNode(
> PropertyASTNode.java:86)
> at org.mvel.ast.PropertyASTNode.getReducedValueAccelerated(
> PropertyASTNode.java :23)
> at org.mvel.ast.BinaryOperation.getReducedValueAccelerated(
> BinaryOperation.java:20)
> at org.mvel.MVELRuntime.execute(MVELRuntime.java:88)
> at org.mvel.CompiledExpression.getValue(CompiledExpression.java:99)
> at org.mvel.MVEL.executeExpression(MVEL.java:219)
> at org.drools.base.mvel.MVELPredicateExpression.evaluate (
> MVELPredicateExpression.java:36)
> at org.drools.rule.PredicateConstraint.isAllowed(
> PredicateConstraint.java:191)
> ... 44 more
>
> Example:
>
> Property :
> public class TipoCaracteristica implements java.io.Serializable{
> .
> .
>
> public static int CABELO_TOTALMENTE_CALVO = 37;
> .
> .
> .
> }
>
> rule:
>
> rule "CABELO_TOTALMENTE_CALVO resposta nao / Chama Tipo de Cabelo"
> salience 90
> when
> e : Especialista(perguntado == false)
> Especialista( $retrato : retratoUser)
> Retrato($lstCaracRetrato : lstCarac) from $retrato
> Retrato($lstMolde : lstMolde) from $retrato
> Molde(tipoMolde.codTipMolde == TipoMolde.CABELO && $lstCaracMolde:
> lstCarac) from $lstMolde
> //CABELO_TIPO = 10
> eval(naoPerguntou($lstCaracMolde, 10))
> //CABELO_TOTALMENTE_CALVO = 37 e RESPOSTA_SIM = 154
> Caracteristica(tipCarac.codTipCarac ==
> TipoCaracteristica.CABELO_TOTALMENTE_CALVO && valor.codValor == 154) from
> $lstCaracMolde
> then
> buscarMontarPergunta(e,Pergunta.CABELO_TIPO,Especialista.CABELO);
> e.perguntado = true;
> update(e);
> end
>
> I get some statics properties like "TipoMolde.CABELO" without errors, but
> I can't use the properties from this class (TipoCaracteristica). Did you
> know why?
> If I use de value like this " valor.codValor == 154", I have no problem.
>
> 2007/10/29, Edson Tirelli <tirelli at post.com>:
> >
> >
> > Anderson,
> >
> > What is the error? Can you provide a self contained example?
> > Using the "from CE" as showed before works.
> >
> > BTW, are you Brazilian? Your name sounds like a Brazilian name.
> >
> > []s
> > Edson
> >
> > 2007/10/27, Anderson Pazza Mello <payakahn at gmail.com >:
> > >
> > > How can I test all elements of the list?
> > > Can I need to use something like "for (int i.....)"?
> > >
> > > I'm trying to do that but it is not working...
> > >
> > > "Caracteristica( codCarac != 0 ) from $caracList"
> > >
> > >
> > >
> > > My test:
> > >
> > > e : Especialista (perguntado == false)
> > > Especialista( $moldeList : retratoUser.lstMolde )
> > > Molde( tipoMolde == TipoMolde.CABELO) from $moldeList
> > >
> > >
> > > When the property "tipoMolde == TipoMolde.CABELO" the rule must to
> > > be fired. The List $moldeList has 5 elements.
> > >
> > > any idea?
> > >
> > >
> > > 2007/10/3, Edson Tirelli < tirelli at post.com>:
> > > >
> > > > Use the "from" CE:
> > > >
> > > > rule "This rule will fire once for each Caracteristica whose
> > > > codCarac is != 0"
> > > > when
> > > > Especialista( $caracList : retratoUser.lstCarac )
> > > > Caracteristica( codCarac != 0 ) from $caracList
> > > > then
> > > > ...
> > > > end
> > > >
> > > > []s
> > > > Edson
> > > >
> > > > 2007/10/3, Bhattacharya, Sougata <
> > > > sougata.bhattacharya at capgemini.com>:
> > > > >
> > > > > If I want to test for all ith element,
> > > > >
> > > > > Like this
> > > > >
> > > > >
> > > > >
> > > > > rule "Test"
> > > > >
> > > > > when
> > > > > e : Especialista(retratoUser.lstCarac.get(i).codCarac !=
> > > > > 0)
> > > > > then
> > > > > System.out.println ("test");
> > > > >
> > > > > end
> > > > >
> > > > >
> > > > >
> > > > > what should I do
> > > > >
> > > > >
> > > > >
> > > > > ------------------------------
> > > > >
> > > > > *From:* rules-users-bounces at lists.jboss.org [mailto:
> > > > > rules-users-bounces at lists.jboss.org] *On Behalf Of *Edson Tirelli
> > > > > *Sent:* Wednesday, October 03, 2007 6:10 AM
> > > > > *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 at gmail.com>:
> > > > >
> > > > > 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 at 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
> > > > > This message contains information that may be privileged or
> > > > > confidential and is the property of the Capgemini Group. It is intended only
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> > > > > message in error, please notify the sender immediately and delete all copies
> > > > > of this message.
> > > > >
> > > > >
> > > > > _______________________________________________
> > > > > rules-users mailing list
> > > > > rules-users at 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
> > > >
> > > > _______________________________________________
> > > > rules-users mailing list
> > > > rules-users at lists.jboss.org
> > > > https://lists.jboss.org/mailman/listinfo/rules-users
> > > >
> > > >
> > >
> > >
> > > --
> > > Anderson Pazza Mello
> > > Tecnologia em Informática - UFPR
> > >
> > > _______________________________________________
> > > rules-users mailing list
> > > rules-users at 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
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
>
> --
> Anderson Pazza Mello
> Tecnologia em Informática - UFPR
>
--
Anderson Pazza Mello
Tecnologia em Informática - UFPR
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