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

[Wolfgang Laun]

  Fact( foo.bar == "baz" )

with pojos
   class Fact { Foo foo; ... }
   class Foo { String bar; ... }

-W


On 14/02/2012, Mark Proctor <mproctor at codehaus.org> wrote:
> 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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>
>