[jboss-user] [EJB 3.0] - Re: Using EntityManager in a abstract super class

[skajotde]

"mnrz" wrote : I don't like this sort of approaches but we had to :)
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  | I think it's very useful if they provide an annotation for injections with local JNDi names 
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Why ? ;> It is point of inheritance. Write noninvasive generalization which model one aspect of system, and every class can specyfy to its needs. Contract is only EntityManager, not JNDI. I avoid Jndi if I can, in OO objects should have contract betwen themselves not between object and global register like JNDI.

You DAO even didnt have inherit GeneralDataAccessManipulator, may have:

@PersistenceContext(name="systemXPU")
private EntityManager entityManager;
property dataManipulatorSystemX = new GeneralDataAccessManipulator(enityiyManager);

Also I'm also pro named PU. Every @PersitenceContext should have name. 

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