Declaring a CMP Entity Bean

The basic responsibilities of the bean provider don’t change that much based on whether BMP or CMP is being used. In either case, you still have to define the bean class, its home and component interfaces, its primary key class (if it’s a multiple-field key), and the initial entries in its deployment descriptor. The good news is that the home and component interfaces and the primary key class are independent of the implementation choice you make. This is key because requiring any differences here would expose your implementation choice to the client. The deployment descriptor identifies persistent fields and relationships for CMP, so it’s definitely affected by the persistence choice you make. The contents of the ...

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