Em Thu, 19 Feb 2009 17:13:30 -0300, Marcelo Lotif <[email protected]>
escreveu:
No, I don't. I suppose it's lighter because to integrate toplink+JPA you
only have to download 2 jars, something like 5mb.When I tried to switch
to hibernate+JPA, I have to download a LOT more dependencies than
toplink,
I thought you were talking of "lightweight" like they say Spring is
lighter than EJB 2.x. :)
Hibernate has more features than JPA, so it should have more code.
Regarding number of dependencies, Maven takes care of that to me. :)
plus the dificulty of the process itself and the lack of documentation.
What process? Lack of documentation? Hibernate has one of the best
documentations I've seen in open-source projects. And it does almost
everything JPA does, using the same annotations and defaults, so I guess a
JPA -> Hibernate transition should be easy. AFAIK, besides the JPA
listeners, Hibernate is a proper superser of JPA.
seraching a little, I read somewere that toplink was a project made to
provide an easy JPA implementation, so that is the reason.
Being JPA a standard, I guess all implementations should be as easy to
easy as each other . . . at least in theory. :)
To add some more advantage to toplink, I found a pretty useful
"annotation reference" guide that's better than anything I ever found
into hibernate
documentation on the internet.
That's exactly the reference I use and the one I recommend to everyone. ;)
Since hibernate annotations are pretty much
the same as toplink/JPA,
http://www.oracle.com/technology/products/ias/toplink/jpa/resources/toplink-jpa-annotations.html
Hibernate uses all the JPA annotations exactly like JPA does. In fact,
Hibernate's own annotations are just used to deal with features Hibernate
has and JPA doesn't (@CollectionOfElements, @BatchSize, etc). No Hibernate
annotation overlaps JPA's ones (besides cascading options).
--
Thiago H. de Paula Figueiredo
Independent Java consultant, developer, and instructor
http://www.arsmachina.com.br/thiago
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