Re: [rules-users] Resuming Flow: NPE when completing a work item

Hi Mauricio, Thank you very much for you comments. I am mapping a single variable type Long. Could you please look at posts above as I think they might have a good point. There it seems that the getWorkItem method is creating a MarshallerReaderContext with a "null" value for the ruleBase argument: public WorkItem getWorkItem() { if ( workItem == null ) { try { ByteArrayInputStream bais = new ByteArrayInputStream( workItemByteArray ); MarshallerReaderContext context = new MarshallerReaderContext( bais, null, // THIS IS a RULEBASE <<<<<<<<<<<<< null, null ); workItem = InputMarshaller.readWorkItem( context ); This in turn ends up creating a NPE when the "null" ruleBase is used. protected Class< ? > resolveClass(ObjectStreamClass desc) throws IOException, ClassNotFoundException { String name = desc.getName(); try { return Class.forName(name, false, this.ruleBase.getRootClassLoader()); // HERE IS WHERE THE NULL POINTER EXCEPTION OCCURS <<<<<<<<<<<<<<<<<<<<<<< since the RuleBase is NULL } catch (ClassNotFoundException ex) { return super.resolveClass( desc ); } } This is explained in more detail in the posts above. Do you think this could be the issue? Am I following (and understanding) Drools src code correctly? I appreciate your help! Thanks, Nick. -- View this message in context: http://n3.nabble.com/Resuming-Flow-NPE-when-completing-a-work-item-tp7168... Sent from the Drools - User mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users