Re: [rules-users] Apply role to whole class hierarchy
After some debugging I was able to shed some light on what causes the problem, even if I don't fully understand it. The problem is produced by the event base class, which is declared with @role(event), i.e. (VSCPEvent) living in a different package than the ButtonEvent. If I move then into the same package, everything works just fine. The two package instances are merged in PackageBuilder.mergePackage(...), but the RuleBuilder still seems to operate on two separate instances, one with the declarations and Package.isEvent(...) returning true for the ButtonEvent and the other without them. Unfortunately, as I know too little about the workings of the various builders, I can't provide you with a ready-made idea of how to fix the problem. See https://issues.jboss.org/browse/JBRULES-3587 Thanks Joerg -- View this message in context: http://drools.46999.n3.nabble.com/Apply-role-to-whole-class-hierarchy-tp4018930p4018963.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Apply role to whole class hierarchy
Thanks for your help, Edson! We are using drools 5.4.0.Final via maven. Maybe I am missing something, so here's a quick overview of what we do. We have a model class ButtonEvent which is derived like this: ButtonEvent - ZonedEvent - VSCPEvent Then there's a rulebase with something like this: import test.vscp.VSCPEvent; import test.vscp.information.ButtonEvent; declare VSCPEvent @role( event ) @timestamp( timestamp ) @expires( 1h ) end declare ButtonEvent @role( event ) @timestamp( timestamp ) @expires( 1h ) end rule Button long pressed when b : ButtonEvent( action == Action.PRESSED ) not( ButtonEvent( action == Action.RELEASED, this after[0s,1s] b ) ) then ... end What I would have expected is that the second 'declare' statement to be unnecessary. However, if I take it away, this is what I get: java.lang.ClassCastException: org.drools.common.DefaultFactHandle at org.drools.base.evaluators.AfterEvaluatorDefinition$AfterEvaluator.evaluateCachedRight(AfterEvaluatorDefinition.java:316) at org.drools.rule.constraint.EvaluatorConstraint.isAllowedCachedRight(EvaluatorConstraint.java:80) at org.drools.common.SingleBetaConstraints.isAllowedCachedRight(SingleBetaConstraints.java:139) at org.drools.reteoo.NotNode.assertObject(NotNode.java:133) at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59) at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:141) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:497) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:382) at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:235) at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:240) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:337) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:298) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:888) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:847) at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:269) ... Thanks Joerg -- View this message in context: http://drools.46999.n3.nabble.com/Apply-role-to-whole-class-hierarchy-tp4018930p4018942.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Apply role to whole class hierarchy
Hi all, we are processing events through a Fusion rule base. To be recognized as such, model classes must be declared as @role(event). We are using a rather extensive hierarchy of events, all derived from a single abstract class. Unfortunately, it doesn't seem to be possible to declare just this base class as an event and have the 'event' role for the others derived from that. Is there a way around having to declare each and every single event class separately? Thanks Joerg -- View this message in context: http://drools.46999.n3.nabble.com/Apply-role-to-whole-class-hierarchy-tp4018930.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
