Re: [eclipselink-users] Overwrite session manager settings

[Tom Ware <tom.ware@xxxxxxxxxx>]

Hi Phil,

  In EclipseLink, EntityManagerFactory holds the object that controls database 
connections.  As a result you need to provide the database properties to the 
EntityManagerFactory at creation time.  (In the bootstrap API, a Map can be 
provided to the Persistence.createEntityManagerFactory(String, Map) method.)

  If you need to regulate these things on an EntityManager basis, there is some 
EclipseLink specific API that can be used to do that, but for most people, the 
general API is sufficient.

-Tom

Philipp Kursawe wrote:
> Is it possible to overwrite the settings made in the persistence.xml 
> when creating the EntityManager using an EntityManagerFactory.create(Map)?
> It seems like that the properties I am handing in are not valued.
>
> Is it in any other way possible to set certain persistence.xml values 
> from within the program? I mean I cannot seriously be asked to put login 
> credentials inside a JAR?
> I would like the user to configure those values and feed them to 
> EclipseLink programmatically not from the persistence.xml.
>
> Thanks for your help!
> Phil
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