Enterprise JavaBeans, Fourth Edition

Final Words

Whether the changes outlined in this chapter are adopted is a matter for the EJB expert group, which should be responsive to the EJB developer community. It’s likely that others will find ways to improve on these proposed changes. Regardless of the outcome, the limited semantics of the Timer Service and the lack of support for configurable message-driven bean timers are problems. As you develop timers, you will quickly discover the need for a much richer way of describing expirations, and some way to configure timers at deployment time, rather than having to use a client application to initiate a scheduled event.