I have to build a time application. In this application user can enter time informtion for an employee for a Department and Job (For e.g., Joe worked 9:00 to 17:00 on 1/1/2004 in Adminstration as Office Assisstant). After user click on Update, I will apply some businesss rules for Joe.

Now the business rules will be in com.srh.ta package and it will be a Session Bean EJB. I want to use Hibernate in this application but i have couple of questions :

* Should I keep Hibernate in com.srh.ta or define another package? I am thinking about a seperate package so that other applications can use it but not sure if it is possible or a recommended approach.

* I am not sure which information to made persistent. I can see that i can persist codes like Department and Job but what about employees? There can be lot of employees (20000+) so does it make sense to persist every employee user work on or when user changes the employee selection i remove the previous employee from the memory? Or do not persist employees at all?

* If I am not using much persistency does it make sense to use Hibernate?

Thanks

Anyone please? Thanks

i am a newbie too but i can try answering these questions.

* There will be a main Hibernate application whose work is only to give you a sessionfactory. You can put this application in a seperate package say, com.srh.hibernate.
Then in your com.srh.ta package you call the main Hibernate application to open a session, do what you want to do, finish your work and then close the session.

* its upto you but i think persisting only current employee is a good idea.

* Hibernate is much more than Persistence.