On 8 February 2012 11:43, Wolfgang Laun <wolfgang.laun@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)