[rules-users] Using java.util.List in rules
Edson Tirelli
tirelli at post.com
Wed Oct 31 12:09:51 EDT 2007
Anderson,
For some reason, MVEL is not resolving your class. Are you using latest
drools version with latest MVEL jar?
Can you send me a self contained test with this rule?
[]s
Edson
2007/10/31, Anderson Pazza Mello <payakahn at gmail.com>:
>
> 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
> > > > > > for the person to whom it is addressed. If you are not the intended
> > > > > > recipient, you are not authorized to read, print, retain, copy, disseminate,
> > > > > > distribute, or use this message or any part thereof. If you receive this
> > > > > > 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
>
> _______________________________________________
> 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
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