Hibernate & Web Applications Issues

• LazyInitializationException I: OpenSessionInView
• LazyInitializationException II (next request, HttpSession/saveState detached object)
• work with IDs (stateless, no session)
• lock(LockMode.NONE)
• programmatically initialize
• FetchType.EAGER
• NonUniqueObjectException (next request, on lock): change statement order
• StaleObjectException: optmistic locking using @Version
• HibernateException: Illegal attempt to associate a collection with two open sessions
• HttpSession object synchronization Filter