Howard,
I am breaking our rules against crossposting and sending your message to
the developer list as well. There may be some people on this list who have
hands on experience with Hibernate (I personally don't).
All I can say is how things are moving along in Cayenne. Yes, Hibernate
seems to have more manpower, but Cayenne is gaining its momentum. And in
truly OpenSource fashion - developers who use it on their jobs contribute
code and ideas. Last 6 month we have steady increase in traffic on the
website and the mailing lists. Development team is expanding and the core
of the framework is very stable and IMO has reached its maturity
(nevermind the Alpha status).
BTW, text-to-objects parser is one of the things I was planning for all
along (EOF-style), so it is coming. But of course you can't include in
your book something that is not in the framework :-).
Anyone else can comment on Cayenne vs. Hibernate?
Andrus
> So, I'm in a slightly odd situation.
>
> I'm authoring a book on Tapestry, and the interesting examples (possilby
> including a PetStore implementation) will need an O/R layer.
>
>
> I've done a brief survey now and again: Cayenne, Hibernate, OJB and
> CastorJDO are the contenders I've seen.
>
> OJB and CastorJDO just left me with a bad taste in my mouth.
>
> Hibernate seems to have the momentum, but Cayenne is the most EOF-like,
> and therefore natural.
>
> I'm under a little pressure to use Hibernate, to dovetail with a book on
> Hibernate being authored by Manning (who will publish the Tapestry
> book).
>
> The differences I can see:
>
> Hibernate uses XML descriptors.
> Cayenne uses XML descriptors and a Swing modeler.
>
> Hibernate uses POJO (plain old java objects), no intefaces, and lots of
> reflection.
> Cayenne uses an interface, and implementations with indirect storage of
> properties and relationships, supported by code generation.
>
> Hibernate includes a (somewhat idiosyncratic) query language.
> Cayenne includes objects to create a dynamic query, but doesn't have a
> text-to- objects parser.
>
> Hibernate needs developer help to order update operations.
> Cayenne does more lifecycle tracking and handles updates more
> seemlessly.
>
> What else am I misssing?
>
> Thanks for the help.
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