ClassCastException: org.drools.reteoo.CollectNode$CollectMemory cannot be cast to org.drools.reteoo.FromNode$FromMemory ----------------------------------------------------------------------------------------------------------------------- Key: JBRULES-2839 URL: https://issues.jboss.org/browse/JBRULES-2839 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-core Affects Versions: 5.0.1.FINAL Reporter: Christian Jacinto Assignee: Mark Proctor Posting a similar case retrieved from http://comments.gmane.org/gmane.comp.java.drools.user/19739: Rule: rule "test" when $inputObj : QuotationSearchFormObject( extensions != null ) QuotationLineExt( $locFrmLabel:label == 'Location From' , value != null , $locFromValue : value ) from $inputObj.getExtensions() i : ArrayList( size > 0 ) from collect ( QuotationLine( extensions != null ) from $totList); then System.out.println("success"); end Stacktrace: java.lang.ClassCastException: org.drools.reteoo.CollectNode$CollectMemory cannot be cast to org.drools.reteoo.FromNode$FromMemory at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:93) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:145) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:57) at org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:142) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:360) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:344) at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185) at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788) at org.drools.process.command.InsertElementsCommand.execute(InsertElementsCommand.java:40) at org.drools.process.command.InsertElementsCommand.execute(InsertElementsCommand.java:12) at org.drools.runtime.impl.BatchExecutionImpl.execute(BatchExecutionImpl.java:23) at org.drools.runtime.impl.BatchExecutionImpl.execute(BatchExecutionImpl.java:9) at org.drools.impl.StatelessKnowledgeSessionImpl.execute(StatelessKnowledgeSessionImpl.java:225) -- This message is automatically generated by JIRA. - For more information on JIRA, see: http://www.atlassian.com/software/jira