Hi,
Not sure how you have a composite entity bean in the class diagram? The DOM shoudl show the entities involved. A composite entity bean woudl appear in a Component Diagram.
The Class Diagram (DOM) shoudl be an extension of the BDOM. Or to put it another way, a representation of the BDOM in the software world.
The Component digram shows
J2EE components. There is not necessarily a 1-to-1 relationship between entity beans and domain objects.