Primary Key Class in CMP & BMP

[Shrinivas Mujumdar]

Hello
1> What is the use of Primary Key Class in CMP or BMP?

2> It is observed from my side that If Primary Key is a single field Primary Key then without putting a ".class" of primary key class in jar also EJB works fine.but for composite primary key i desperately required it?

Can anybody focus more on this?

Thanks in Advance

Shrinivas

[Sebastian Hennebrueder]

When I use a single field as primary key, I do not use a Primary key class.

As you stated, with a complex primary key (more than one field) you must use a primary key class.

You may alway use a primary key because
- design purpose (consistent use of pk classes or wanting to seperate primary key and fields used for primary key)
- auto - increment for some EJB containers when you want to use unknown pk

Regards Sebastian