[rules-users] Using java.util.List in rules
Anderson Pazza Mello
payakahn at gmail.com
Thu Nov 1 16:21:48 EDT 2007
Here are my rules:
#created on: 29/10/2007
package br.ufpr.ti.identkit.rules
#list any import classes here.
import br.ufpr.ti.identkit.entity.*
#the package " br.ufpr.ti.identkit.entity.* " has the class
TipoCaracteristica and the class TipoMolde
import br.ufpr.ti.identkit.ia.Especialista
import java.util.List
import java.util.LinkedList
import java.util.ArrayList
rule "POSSUI_CARACTERISTICA_MARCANTE Resposta nao"
salience 95
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 $lstMolde
//CABELO_ENCOBERTO = 34
eval(naoPerguntou($lstCaracMolde, 34))
//TipoCaracteristica.POSSUI_CARACTERISTICA_MARCANTE == 33
//146 não possui caracteristica marcante
Caracteristica(tipCarac.codTipCarac == 33 && valor.codValor == 146)
from $lstCaracRetrato
then
buscarMontarPergunta(e,Pergunta.CABELO_ENCOBERTO,Especialista.CABELO
);
e.perguntado = true;
update(e);
end
How can I be sure that I'm with latest MVEL jar?
2007/10/31, Rahul Phadnis <rahul.phadnis at yahoo.com>:
>
> Do you have an import statement for importing
> TipoCaracteristica?
>
> I see you are already using TipoMolde.CABELO which I
> assume is another public static variable in the
> TipoMolde class.
>
> If none of these work can you post your drl file?
>
> Rahul
>
> --- Anderson Pazza Mello <payakahn at gmail.com> wrote:
>
> > 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
> >
> === message truncated ===>
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> >
>
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--
Anderson Pazza Mello
Tecnologia em Informática - UFPR
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