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From Mike Kienenberger <>
Subject Re: Can Cayenne run on google AppEngine/Java?
Date Fri, 10 Apr 2009 17:40:42 GMT
>From what I understand, it's not JDBC that's not supported, but the
lack of a Google Apps Engine JDBC driver.

I haven't tried it, but it seems like it'd be easy enough set up.

Yes, reflection isn't supported.

Again, though, I think the real fitting point is not getting Cayenne
to run in entirety on the app engine as a java -> javascript
translated byte code, but to make sure that client-side ROP works on
the apps engine, with Cayenne running on the server-side.

On Fri, Apr 10, 2009 at 10:47 AM, Andrus Adamchik
<> wrote:
> On Apr 10, 2009, at 5:36 PM, Joseph Schmidt wrote:
>> Can cayenne run on the new Google AppEngine/Java?
>> I'm asking this because there are quite some restrictions to the
>> applications that work, and many known frameworks don't work (but the
>> authors promised to make them work - e.g. Tapestry):
>> e.g. Hibernate does not work (maybe this might be the chance for Cayenne
>> to get some more publicity if it could work :) ?).
>> thanks,
>> Joseph.
> A good question...
> IIRC Google apps engine does not support JDBC? So that will be a
> showstopper, although the stack is abstracted well enough so that it should
> be possible to re-implement a non-JDBC DataNode. Otherwise Cayenne does not
> rely on reflection for CayenneDataObjects, and should be possible to port
> ... I think.
>> maybe this might be the chance for Cayenne to get some more publicity if
>> it could work :) ?).
> This might also be a chance for new Cayenne volunteers to get publicity ;)
> Andrus

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