Hi Chad,
First a piece of important information on JPA & Cayenne. We don't have
sufficient resources now to finish a compliant provider in 3.0.
Passing Sun TCK is the only legal way for us to include a provider in
the *final* release of 3.0. So JPA won't be in 3.0-final and the JPA
work is now on hold, while we are finishing "Cayenne classic" tasks.
Now specifically answering your question about annotations. There is
no functionality in place to port an existing Cayenne mapping to
annotated classes. It was planned as a part of the JPA work which as I
mentioned above is currently on hold.
So please keep using Cayenne API and the Modeler. This is not going
anywhere, and in fact is being actively developed and greatly improved
in many ways in 3.0 [1].
Also a general JPA note: we are looking for volunteers to develop JPA
provider. If somebody has interest in doing that, please speak up on
the dev list. The current set of committers is simply too happy with
Cayenne API to care about JPA :-)
Andrus
[1] http://cayenne.apache.org/doc/guide-to-30-features.html
On Jan 15, 2009, at 10:40 PM, Chad Smith wrote:
I'm currently using 2.0.4 but I'm curious about migrating to v3 b/c
I'm interested in using an annotations based persistence model. My
assumption was that I could do the following ...
- download Cayenne 3
- import an existing data model
- and re-generate all the classes
... my expectation was that I would see annotations in the cayenne
generated super classes ... but it doesn't look like that is the
case. I tried various different generation modes but none of that
seems to generate the actual annotations.
I downloaded and browsed through JPA example project and I noticed
that the base classes contain annotations but I don't see how they
got there.
What up?
Thanks in advance.
:~)
Chad
