Hi,

I've got the jbpm6 developper guide book but there is something that i don't understand.

My question is about the way in which the sessions are created.

There is a chapter explaining the manager types (with code samples).

- Singleton Runtime Manager

- Per Request Runtime Manager

- Per Process Instance Runtime Manager

---------> With the manager you get a runtime engine and with this engine you get a session with engine.getKieSession();

There is also a chapter for implementing persistence and transaction. BUT the sample code for creation session is different

KieServices services = KieServices.Factory.get();

Environment newEnv = services.newEnvironment();

newEnv.set(EnvironmentName.ENTITY_MANAGER_FACTORY, emf);

newEnv.set(EnvironmentName.TRANSACTION_MANAGER, tm);

KieSession session = JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, newEnv);  ---> What about the runtime manager (which type) and environnement engine ?