I was asking about the attributes "name" and "mappedName" of the bean and
"name" and "unitName" of the persistence context.
2006/11/15, Wouter van Reeven <wouter_at_van.reeven.nl>:
>
> Hi Antonio,
>
> On Wed, Nov 15, 2006 at 05:39:34PM +0100, Antonio Goncalves wrote:
> > The first one is @Stateless (or @Stateful). What is the name
> attribute used
> > for ? In the specification it says that it's the name of the EJB. But
> on the
> > other hand, when I change it nothing happens but when I use the
> mappedName
> > attribute (which is vendor specific), it really changes the name of
> my EJB
> > in the JNDI tree. For example :
>
> Stateful or Stateless indicates the way the SessionBean is managed by the
> EntityManager. In shirt, Stateless beans are kept in a pool and don't hold
> any
> values (also named state, hence the name), while Stateful beans DO contain
> state
> and can be used to e.g. put on a HttpSession to contain session specific
> values.
>
> > The other one is @PersistenceContext. The name attribute doesn't lead
> me
> > anywhere (I can't see any difference in using it or not) ant the
> other is
> > unitName that has to be equal to the persitent unit name within the
> > persistence.xml file. The spec doesn't talk about any vendor specific
> > attribute but I don't understand what the name attribute can be used
> for.
>
> PersistenceContext is the context in which the Persistence Unit resides on
> the
> Enterprise Server. You can use it to inject an EntityManager instance so
> you can
> access EJB instances from your classes.
>
>
> HTH, Wouter van Reeven
>
> --
>
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