[rules-users] 5.3.0 NoClassDefFound due to nested property access

[Mark Proctor]

On 10/02/2012 11:40, Wolfgang Laun wrote:
> Yes? No? Don't know? None of the previous?
What is "bar" is it a String or something else? Where did Monitor come from?

Mark
>
> On 8 February 2012 11:43, Wolfgang Laun <wolfgang.laun at gmail.com 
> <mailto:wolfgang.laun at gmail.com>> wrote:
>
>     Is this already known and fixed in 5.4.0? The problem occurs when you
>     have, e.g.,
>
>       Fact( foo.bar == "baz" )
>
>     Stack dump:
>
>     Exception in thread "main" java.lang.NoClassDefFoundError:
>     monitor/Monitor
>            at ASMAccessorImpl_114212541328697624590.getValue(Unknown
>     Source)
>            at
>     org.mvel2.optimizers.dynamic.DynamicGetAccessor.getValue(DynamicGetAccessor.java:73)
>            at
>     org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:106)
>            at
>     org.mvel2.compiler.ExecutableAccessor.getValue(ExecutableAccessor.java:42)
>            at org.mvel2.MVEL.executeExpression(MVEL.java:954)
>            at
>     org.drools.base.extractors.MVELClassFieldReader.getValue(MVELClassFieldReader.java:100)
>            at
>     org.drools.base.extractors.BaseObjectClassFieldReader.isNullValue(BaseObjectClassFieldReader.java:179)
>            at
>     org.drools.rule.VariableRestriction$ObjectVariableContextEntry.updateFromFactHandle(VariableRestriction.java:338)
>            at
>     org.drools.common.SingleBetaConstraints.updateFromFactHandle(SingleBetaConstraints.java:118)
>            at org.drools.reteoo.NotNode.modifyRightTuple(NotNode.java:339)
>            at org.drools.reteoo.BetaNode.modifyObject(BetaNode.java:431)
>            at
>     org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:468)
>            at
>     org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:436)
>            at
>     org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:288)
>            at
>     org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:271)
>            at
>     org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:459)
>            at
>     org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:363)
>            at
>     org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:298)
>            at
>     monitor.Rule_stop_monitoring.defaultConsequence(Rule_stop_monitoring.java:8)
>            at
>     monitor.Rule_stop_monitoringDefaultConsequenceInvoker.evaluate(Unknown
>     Source)
>            at
>     org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1091)
>            at
>     org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1029)
>            at
>     org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251)
>            at
>     org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:708)
>            at
>     org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:672)
>            at
>     org.drools.common.Scheduler$ActivationTimerJob.execute(Scheduler.java:90)
>            at
>     org.drools.time.impl.DefaultTimerJobInstance.call(DefaultTimerJobInstance.java:46)
>            at
>     org.drools.time.impl.DefaultTimerJobInstance.call(DefaultTimerJobInstance.java:13)
>            at
>     org.drools.time.impl.PseudoClockScheduler.runCallBacks(PseudoClockScheduler.java:203)
>            at
>     org.drools.time.impl.PseudoClockScheduler.advanceTime(PseudoClockScheduler.java:156)
>
>
>
>
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