<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">The jira you reference, JBRULES-3713, has marked itself as a duplicate of /JBRULES-3632. The later was fixed for the upcoming 5.6 release, again try the 5.5.1.SNAPSHOT to be sure.<div><br></div><div>The problem is due to the LeftTuple factory method. Each node builds and returns it's own LeftTuple. If some how a LeftTuple is created by one node, but used by a different node, that can cause this problem.</div><div><br></div><div>Mark<br><div><div><div>On 7 Mar 2013, at 04:23, erolagnab <<a href="mailto:trung.n.k@gmail.com">trung.n.k@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">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 <a href="https://issues.jboss.org/browse/JBRULES-3713">https://issues.jboss.org/browse/JBRULES-3713</a>. 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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