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Subject RE: Pointers for JPA integration tutorial
Date Mon, 27 Aug 2007 14:32:42 GMT

Thanks so much!!!!  Do you have a feel for when you will have the
enhancer bug fixed (yeh, I'd call that a big one B-) ) and the JPA
provider will be ready for Alpha?


-----Original Message-----
From: Andrus Adamchik [] 
Sent: Saturday, August 25, 2007 2:58 PM
Subject: Re: Pointers for JPA integration tutorial

Hi Shannon,

the reason for the absent tutorial is that the JPA provider is still  
work in progress, and we need to plug a few holes in the provider  
before it can be considered Alpha and ready for experimentation. But  
I decided to write one anyways :-) 

See the README.txt file inside the archive for details. Unlike other  
Cayenne tutorials it doesn't have a Modeler in the picture (following  
JPA philosophy of modeling persistence straight in the code via  
annotations). So you'd have to run the schema generation script via  
"ij" Derby tool (see README.txt again), and then fire up the app from  
Eclipse. Also note that the tutorial includes the latest Cayenne  
build from trunk which, compared to 3.0M1, has *much* more capable  
EJBQL engine and also fixes a bunch of bugs.

Now the holes I mentioned above. The main one that I can think of  
right now is an enhancer bug that prevents relationships use (doh!  
that's a big one). I guess once that's fixed, we can declare the  
provider to be in the usable alpha state.


On Aug 24, 2007, at 11:09 PM, wrote:

> Hi all,
> I am new to both Cayenne and the JPA and trying to get a basic test
> running with Cayenne 3.0M  and Derby. I have worked through the  
> Cayenne
> tutorial in the quick start, but it does not have any info on how to
> model, generate Objects and then work with the JPA.  I was hoping
> someone could point me at a little tutorial or some demo code that  
> would
> help me get started.
> Thanks,
> Shannon

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