Hi there, I am using KnowledgeAgent to get the knowledgeBase and have notifierService started to monitor the rules resource. New knowledgeBase is being created when kAgent finds changes on the rules. However, I don't want to replace the old knowledgebase if newly created knowledgebase has some rules with compilation error. Is this something possible? I am using KnowledgeAgentEventListener to detect the compilation error and using drools 5.3 version. thanks in advance. -- View this message in context: http://drools.46999.n3.nabble.com/how-to-restore-the-knowledgeBase-when-n... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Thanks for the reply, so far from documentation, I believe "newInstance"=true(default) replaces the old kb as a whole and =false will update the existing kb. But I didn't see anywhere explaining that if there is a compilation error on rules, it will not update the kb. And I verified. It updates the kb. I don't know if that is expected or bugs in this version. Anyway, I found the workthrough by assigning the kb to the variable and update it only if there is not resourceCompilationFailed using knowledgeBaseUpdated event on KnowledgeAgentEventListener. Anyway, thanks for your help. -- View this message in context: http://drools.46999.n3.nabble.com/how-to-restore-the-knowledgeBase-when-n... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users