[rules-users] UnsupportedOperationException intermitently

[Davide Sottara]

Could you try 5.5.1-SNAPSHOT? Many similar issues were solved recently.
A 5.6 release is expected within a matter of days.

Otherwise, could you please post a copy of the rule causing the exception?
Thanks
Davide

On 03/07/2013 01:24 AM, erolagnab wrote:
> Reformat my mail so it's readable ...
>
> ----
>
> We've upgraded Drools 5.1 to 5.4.0.Final. Everything is great with new
> incremental build change-set.
>
> However, occasionally we get this error (so far, 2 different stack trace)
>
> java.lang.UnsupportedOperationException
>         at org.drools.reteoo.BaseLeftTuple.getObject(BaseLeftTuple.java:589)
>         at
> org.drools.reteoo.RuleTerminalNode.modifyLeftTuple(RuleTerminalNode.java:273)
>         at
> org.drools.reteoo.LeftTupleSource.doModifyLeftTuple(LeftTupleSource.java:297)
>         at
> org.drools.reteoo.AbstractTerminalNode.modifyLeftTuple(AbstractTerminalNode.java:104)
>         at
> org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateModifyObject(CompositeLeftTupleSinkAdapter.java:260)
>         at
> org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateModifyObject(CompositeLeftTupleSinkAdapter.java:275)
>         at
> org.drools.reteoo.LeftInputAdapterNode.modifyObject(LeftInputAdapterNode.java:170)
>         at
> org.drools.reteoo.SingleObjectSinkAdapter.propagateModifyObject(SingleObjectSinkAdapter.java:68)
>         at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
>         at
> org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>         at
> org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>         at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
>         at
> org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>         at
> org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:421)
>         at
> org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
>         at
> org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
>         at
> org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:470)
>         at
> org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:370)
>         at
> org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:317)
>         at
> org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:312)
>
> AND
>
> java.lang.UnsupportedOperationException
>         at
> org.drools.reteoo.BaseLeftTuple.getPrevious(BaseLeftTuple.java:478)
>         at org.drools.core.util.LeftTupleList.remove(LeftTupleList.java:84)
>         at
> org.drools.core.util.LeftTupleList.removeAdd(LeftTupleList.java:65)
>         at org.drools.reteoo.JoinNode.modifyLeftTuple(JoinNode.java:302)
>         at
> org.drools.reteoo.LeftTupleSource.doModifyLeftTuple(LeftTupleSource.java:297)
>         at
> org.drools.reteoo.LeftTupleSource.modifyLeftTuple(LeftTupleSource.java:271)
>         at org.drools.reteoo.JoinNode.modifyLeftTuple(JoinNode.java:429)
>         at
> org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateModifyObject(CompositeLeftTupleSinkAdapter.java:260)
>         at
> org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateModifyObject(CompositeLeftTupleSinkAdapter.java:275)
>         at
> org.drools.reteoo.LeftInputAdapterNode.modifyObject(LeftInputAdapterNode.java:170)
>         at
> org.drools.reteoo.SingleObjectSinkAdapter.propagateModifyObject(SingleObjectSinkAdapter.java:68)
>         at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
>         at
> org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>         at
> org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>         at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
>         at
> org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>         at
> org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:421)
>         at
> org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
>         at
> org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
>         at
> org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:470)
>         at
> org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:370)
>         at
> org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:317)
>         at
> org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:312)
>
> I've searched around and saw https://issues.jboss.org/browse/JBRULES-3713.
> I've downloaded the test program and load our rules but can't reproduce the
> issue. The similarity between our rules and rules in the test case is that
> we do have a rule matched and perform an update on the fact.
>
> With my limited knowledge of drools and how it works internally, i've run
> out of ideas.
>
> SOS, please help!!!
>
> Regards,
>
> Trung 
>
>
>
> --
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