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From Luca Masini <>
Subject Re: Sling on GAE
Date Wed, 14 Apr 2010 20:34:01 GMT
I think there are no chances to run JackRabbit on GAE, for now, and less
that I can persuade them to let application create thread or files :)

But I'm happy to read that for you too can be a way to use Sling directly,
may be using a ResourceResolver on top of the DataStore or implementing a
simple Level 1 JCR Repository.

That can be a way ???

On Wed, Apr 14, 2010 at 9:51 PM, Alexander Klimetschek <>wrote:

> On Wed, Apr 14, 2010 at 20:00, Luca Masini <> wrote:
> > I would love to use Sling to access the Google Data Store and program
> user
> > interface in an easy way. Now I know that, due to limitations on the GAE
> > environment this will be really hard (I don't know how to make Felix run
> on
> > there without writing files or launching threads), so I want to discuss
> this
> > with Sling experts and know what do you think about the idea and if is
> > something doable.
> So you would want to use Sling directly on top of the Google Data
> Store and not use JCR? In theory this should be possible, but might
> require additional work besides the basic issues like multiple
> threads, running an OSGi framework etc. Many things in Sling work
> based on a JCR repository. You can build a resource tree based on
> other backends, but this is a bit like reinventing the wheel.
> If JCR should be used as well on GAE below Sling, this also requires
> changes to Jackrabbit: first a datastore/persistence manager using the
> google data store as backend and secondly removing all background
> threads in Jackrabbit. See also
> or the discussion
> at
> I think it would be easier if the GAE guys would remove some of the
> constraints to allow for infrastructure apps. Maybe you can persuade
> them ;-)
> Regards,
> Alex
> --
> Alexander Klimetschek


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