Designing EJB Classes and Interfaces
The following strategies apply to designing your enterprise bean implementation classes and the interfaces they expose to their clients. The core of an EJB application consists of the enterprise beans it’s built on, so this is the first place to focus your efforts toward producing a good design.
Designing Coarse-Grained Enterprise Beans
Prior to EJB 2.0, it was clear that an enterprise bean was too heavy an implementation approach for some objects. As Chapter 3 pointed out, the overhead involved in making a remote method call can be quite expensive. These and other issues forced many EJB applications to limit the number of calls a client invoked on an EJB and it also became more efficient to package up larger ...
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