NPE in ObjectTypeConfigurationRegistry when accumulate returns null (and "quick hack for 5.2") ---------------------------------------------------------------------------------------------- Key: JBRULES-3150 URL: https://issues.jboss.org/browse/JBRULES-3150 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-core (expert) Affects Versions: 5.2.0.Final Reporter: Wolfgang Laun Assignee: Mark Proctor Fix For: 5.2.1.Final rule foo # the problem is usually better "hidden" when Object() from accumulate( Object(), init( Object res = null; ) action( res = null; ) result( res ) ) then end causes the exception as shown below, or similar. A runtime diagnostic should tell the user (at least) that an accumulate result is null. ALSO, PLEASE NOTE THIS COMMENT in AccumulateNode.java:642! // this is a quick hack for the 5.2 release Exception in thread "main" java.lang.NullPointerException at org.drools.common.ObjectTypeConfigurationRegistry.getObjectTypeConf(ObjectTypeConfigurationRegistry.java:58) at org.drools.reteoo.AccumulateNode.evaluateResultConstraints(AccumulateNode.java:646) at org.drools.reteoo.AccumulateNode.assertLeftTuple(AccumulateNode.java:183) at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:197) at org.drools.reteoo.SingleLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:146) at org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:154) at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59) at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:204) at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:191) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:332) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:293) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:905) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:864) at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:255) at match.Main.makeFacts(Main.java:120) at match.Main.execute(Main.java:98) at match.Main.main(Main.java:126) -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira