[rules-users] Problem with PKG from guvnor

[Demian Calcaprina]

Thanks Genene.

In fact I was able to get the cause of my issue. I created a ticket with
the explanation and a pull request with a possible solution.

https://issues.jboss.org/browse/DROOLS-243

Thanks,

Demian


On Tue, Aug 27, 2013 at 12:26 PM, Genene Geda <ggeda at ghx.com> wrote:

> Hi-,
> I think I had similar issue and resolved by looking at one of these:
>
> 1. How the changes set is loaded:
>
> Resource changeset = ResourceFactory.newFileResource(changeSetFilePath);
>                         //.newClassPathResource(changeSetPath);
>
> 2.If the package not yet built,  In GUVNOR, I go to 'knowledgebase'/ click
> on you package/click on the 'edit' tab on the right/ click build package  (
> I also do create snapshot but may not be necessary ).
>
> See if it helps.
>
> G-
>
> -----Original Message-----
> From: rules-users-bounces at lists.jboss.org [mailto:
> rules-users-bounces at lists.jboss.org] On Behalf Of calcacuervo
> Sent: Monday, August 26, 2013 10:26 PM
> To: rules-users at lists.jboss.org
> Subject: [rules-users] Problem with PKG from guvnor
>
> Hi Guys,
>
> I am having a problem using Drools 5.5.
>
> Basically, I have a ksession in stream mode.
>
> I have a rule with an event, like this
>
> when
>         myfact: EventA( main > 21 ) over window:length (1)
>         myfact2 : EventA( main <= 21 , this before myfact ) over
> window:length (2)
>
> I also use a KnowledgeAgent and apply a changeset.
>
> If I declare this rule directly from the changeset, as a Classpath
> resource, with resource type DRL, it seems to work fine (the kbase
> compiles!).
>
> But If I have the rule in a guvnor package, and I put the PKG link in my
> changeset, I am getting an error:
>
> Caused by: java.lang.NullPointerException
>         at
>
> org.drools.base.evaluators.BeforeEvaluatorDefinition$BeforeEvaluator.getInterval(BeforeEvaluatorDefinition.java:268)
> [drools-core-5.5.0.Final.jar:5.5.0.Final]
>         at
>
> org.drools.rule.constraint.EvaluatorConstraint.getInterval(EvaluatorConstraint.java:100)
> [drools-core-5.5.0.Final.jar:5.5.0.Final]
>         at
>
> org.drools.reteoo.builder.BuildUtils.gatherTemporalRelationships(BuildUtils.java:326)
> [drools-core-5.5.0.Final.jar:5.5.0.Final]
>         at
>
> org.drools.reteoo.builder.BuildUtils.calculateTemporalDistance(BuildUtils.java:292)
> [drools-core-5.5.0.Final.jar:5.5.0.Final]
>         at
>
> org.drools.reteoo.builder.ReteooRuleBuilder.addRule(ReteooRuleBuilder.java:119)
> [drools-core-5.5.0.Final.jar:5.5.0.Final]
>         at org.drools.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:113)
> [drools-core-5.5.0.Final.jar:5.5.0.Final]
>         at
> org.drools.reteoo.ReteooRuleBase.addRule(ReteooRuleBase.java:445)
> [drools-core-5.5.0.Final.jar:5.5.0.Final]
>
> It seems that that getOperator() is null in this evaluation:
>             if ( this.getOperator().isNegated() ) {
>
> I debugged a bit, and it seems the evaluator comes in serialized from
> guvnor's package.But in case of getting directly the classpath resource, it
> compiles the package and it gets the real operator ok (Operator = 'before')
>
> Do you have any idea of why it could be happening? May I be doing
> something wrong? Is this a bug in guvnor?
>
> Thanks in advance!
>
> Demian
>
>
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/Problem-with-PKG-from-guvnor-tp4025687.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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