[rules-users] NoClassDefFoundError when dynamically updating rulebase for rule using 'accumulate' CE

[kunal]

Yes, I just updated to 4.0.7 before couple of days. But I tried it out with
4.0.4 also with same results. So I don't think this is something introduced
in 4.0.7, but not sure.



Edson Tirelli-3 wrote:
> 
>       Are you using drools 4.0.7?
> 
>      []s
>      Edson
> 
> 2008/6/10 kunal <kshah at sensorlogic.com>:
> 
>>
>> I am dynamically adding/modifying rules (packages) to a loaded rule-base
>> and
>> having issues specifically when my rule contains accumulate CE. For an
>> example, following is a rule which I am trying to add to my rulebase
>> (which
>> is already loaded in memory).
>>
>> rule "7d7fa7f1-164b-45a7-8e5a-c0c260815f9a"
>>        enabled true
>>        salience 0
>>        no-loop true
>>        agenda-group "DATA_ARRIVAL"
>>        when
>>                AgentID(agentId : agentId);
>>                DeviceData()
>>
>>
>> Property(key=="threshold",classifier=="7d7fa7f1-164b-45a7-8e5a-c0c260815f9a.Condition0",$prop_threshold0
>> : value)
>>                $total0: Number( doubleValue > $prop_threshold0)   from
>> accumulate(
>> DataPoint( $value0: value ) from
>>
>> dataService.getDataPoints("5e0de623-9a25-45a1-8bc5-745254c2576e","SPEED",3),
>> average( $value0) )
>>        then
>>
>>  agent.handleAction("rules.sl.7d7fa7f1-164b-45a7-8e5a-c0c260815f9a",0);
>> end
>>
>> I am not getting any error (Rule validation or any other) when adding
>> package with my rule to rulebase, but when getting following error, when
>> rulebase is used thereafter:
>>
>> java.lang.NoClassDefFoundError:
>> rules/sl/Rule_7d7fa7f1_164b_45a7_8e5a_c0c260815f9a_0
>>        at
>>
>> rules.sl.Rule_7d7fa7f1_164b_45a7_8e5a_c0c260815f9a_0AccumulateExpression0Invoker.evaluate(Unknown
>> Source)
>>        at
>>
>> org.drools.base.accumulators.JavaAccumulatorFunctionExecutor.reverse(JavaAccumulatorFunctionExecutor.java:91)
>>        at org.drools.rule.Accumulate.reverse(Accumulate.java:151)
>>        at
>> org.drools.reteoo.AccumulateNode.modifyTuple(AccumulateNode.java:376)
>>        at
>> org.drools.reteoo.AccumulateNode.retractObject(AccumulateNode.java:292)
>>        at
>>
>> org.drools.reteoo.SingleObjectSinkAdapter.propagateRetractObject(SingleObjectSinkAdapter.java:32)
>>        at
>>
>> org.drools.reteoo.RightInputAdapterNode.retractTuple(RightInputAdapterNode.java:124)
>>        at
>>
>> org.drools.reteoo.SingleTupleSinkAdapter.propagateRetractTuple(SingleTupleSinkAdapter.java:38)
>>        at org.drools.reteoo.FromNode.retractTuple(FromNode.java:130)
>>        at
>>
>> org.drools.reteoo.CompositeTupleSinkAdapter.propagateRetractTuple(CompositeTupleSinkAdapter.java:52)
>>        at org.drools.reteoo.JoinNode.retractTuple(JoinNode.java:231)
>>        at
>>
>> org.drools.reteoo.CompositeTupleSinkAdapter.propagateRetractTuple(CompositeTupleSinkAdapter.java:52)
>>        at org.drools.reteoo.JoinNode.retractObject(JoinNode.java:191)
>>        at
>>
>> org.drools.reteoo.CompositeObjectSinkAdapter.propagateRetractObject(CompositeObjectSinkAdapter.java:375)
>>        at
>> org.drools.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:189)
>>        at org.drools.reteoo.Rete.retractObject(Rete.java:215)
>>        at
>> org.drools.reteoo.ReteooRuleBase.retractObject(ReteooRuleBase.java:211)
>>        at
>>
>> org.drools.reteoo.ReteooWorkingMemory.doRetract(ReteooWorkingMemory.java:79)
>>        at
>>
>> org.drools.common.AbstractWorkingMemory.retract(AbstractWorkingMemory.java:1023)
>>        at
>>
>> org.drools.common.AbstractWorkingMemory.retract(AbstractWorkingMemory.java:982)
>>        at
>> com.sensorlogic.rules.RuleAgent.retractMatchingFact(RuleAgent.java:283)
>>        at com.sensorlogic.rules.RuleAgent.processFact(RuleAgent.java:264)
>>        at com.sensorlogic.rules.RuleAgent.run(RuleAgent.java:342)
>>        at
>>
>> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
>>        at
>>
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
>>        at java.lang.Thread.run(Thread.java:595)
>>
>> I will appreciate any insight with this problem. My process of
>> adding/updating rules dynamically works with all other rules I am using
>> but
>> only has issues with using 'accumulate' CE. Has someone encountered this
>> before? Or just any ideas on what can cause NoClassDefFound for my added
>> rule?
>> --
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>> Sent from the drools - user mailing list archive at Nabble.com.
>>
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>>
> 
> 
> 
> -- 
> Edson Tirelli
> JBoss Drools Core Development
> Office: +55 11 3529-6000
> Mobile: +55 11 9287-5646
> JBoss, a division of Red Hat @ www.jboss.com
> 
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> 

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