Mostrando postagens com marcador EJB. Mostrar todas as postagens
Mostrando postagens com marcador EJB. Mostrar todas as postagens

sábado, 24 de agosto de 2013

EJB3.1


EJB is used to provide services for distributed applications.
Some different configuration type can be used, one example in the code;

@Stateless //State type for the EJB
@LocalBean //Says that this need not local interface
public class Implementation   implements InterfaceRemote {
}

In this case the local method is all in the class Implementation, they don't need annotations.


Some implementations use generics to have less repeated code.
A Good use of  this is for DAO of entity, the class Implementation extends SomeGenericDAO<EntityTO>.
Or a simple use is extends SomeClass only.

One EJB can acess other using the annotation @EJB to inject dependen.
@EJB
private UserBean userBean;


This being updated.........