Is the knowledge agent configured NOT to create a new knowledgebase every time it detects an update? That is, did you create it with the option "newInstance" set to false?
On 09/10/2013 03:26 PM, dunnlow wrote: > I'm using Drools 5.5 (and guvnor) > > Can anyone point me to example where a knowledge agent is used with > persistence. I am trying to understand how the knowledgeagent is used with > a persisted session. Fundamentally when my app starts, I am trying to do > one of two things: > > If a persisted session does not exist, start a new one and update it > whenever my knowledgebase (in guvnor) changes > ELSE > If a persisted session already exists (i.e. at a system restart), load the > existing session and continue to monitor it for changes. > > I have the persistence working and the monitoring of changes (with a > knowledgeagent) working independently, but not together. > > My code: > > Environment env = KnowledgeBaseFactory.newEnvironment(); > env.set(EnvironmentName.ENTITY_MANAGER_FACTORY,myEMF); > env.set(EnvironmentName.TRANSACTION_MANAGER, myTxManager); > > To create/retrieve my ksession I have tried both: > ksession = > JPAKnowledgeService.newStatefulKnowledgeSession(kAgent.getKnowledgeBase(),null,env) > This creates a persisted session, but it is never updated with changes > > I also tried: > ksession = > kAgent.getKnowledgeBase().newStatefulKnowledgeSession(null,env); > This updates the ksession with changes, but never persists the session > > I figure I can add a KnowledgeAgentEventListener to the agent and then > recreate the ksession by hand (in the knowledgeBaseUpdated method). But I > am hoping there is a cleaner/better way. > > Thanks for any ideas. > -J > > > > > -- > View this message in context: > http://drools.46999.n3.nabble.com/KnowledgeAgent-with-persistence-tp4025897.html > Sent from the Drools: User forum mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users > _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
