Thanks Marco,
I am looking to find the integration points to customize to enable my
model to persist to accumulo. Here is my impression of what I think needs
to be done. Please correct as necessary
1) provide a custom implementation of ModelMaker which will return my
CustomAccumuloModel::Model (:: --> is of type)
2) Provide implementation of CustomAccumuloModel::Model that will also
implement ModelCon and possibly ModelGraphInterface.
What I do understand is where to hook in my Accumulo DAO that actually
persists the model to Accumulo. The corresponding RDB code is as so:
conn = new DBConnection( DB_URL, DB_USER, DB_PASSWD, DB );
ModelMaker maker = ModelFactory.createModelRDBMaker(conn) ;
Model model = maker.createDefaultModel();
...
model.commit()
Guessing I will have to provide a custom AccumuloConnection class that will
be referenced by the model so that model.commit() can push the data to the
store ??
Thanks,
P.
On Fri, May 25, 2012 at 5:54 AM, Marco Neumann <[email protected]>wrote:
> Patrick ,
>
> we basically have just extended the model interface in jena to bind
> the BigTable column store to the API.
>
> though the benefits of the Google App engine are obvious, free hosting
> and database scaling as web service etc, we have unfortunately
> observed significant performance issues and some limitations with the
> BIgTable database implementation for our needs. This might change with
> future release of Google App Engine framework. But for now I have
> switched my focus back to TDB which provides sufficient performance
> for some of our production systems.
>
> but if you want to go ahead with your own extension Andy had just
> posted a link to documentation. Andy can you please re-post the link
> again here?
>
> Marco
>
>
>
> On Thu, May 24, 2012 at 12:03 AM, Patrick Thompson
> <[email protected]> wrote:
> > That is awesome.
> ...
> >
> > On May 23, 2012 5:17 PM, "Marco Neumann" <[email protected]>
> wrote:
> >>
> >> do you want to make this a public or a commercial and private project?
> >>
> >>
> >> On Wed, May 23, 2012 at 6:06 PM, Marco Neumann <[email protected]
> >
> >> wrote:
> >> > we did a Jena implementation with a Google BigTable back-end back in
> >> > 2010. It's still running here
> >> >
> >> > http://geosparql.org/
> >> >
> >> > I am going to publish the documentation hopefully soon, will keep you
> >> > posted.
> >> >
> >> >
> >> >
> >> >
> >> > On Wed, May 23, 2012 at 12:21 PM, Patrick Thompson
> >> > <[email protected]> wrote:
> >> >> Hello,
> >> >> I am looking to store the jena model to a cloud based
> >> >> datastore(accumulo). I have sifted through the documentation but
> >> >> haven't
> >> >> yet found information that would help me do that. So specifically I
> was
> >> >> looking at this architecture picture:
> >> >> http://jena.apache.org/about_jena/architecture.html and am looking
> to
> >> >> implement the '?' box.
> >> >> At least that is what I am hoping I need to do.
> >> >>
> >> >> Instead of going to mysql I want to write to a big table of sorts.
> Any
> >> >> pointers will be greatly helpful. Thanks.
> >> >>
> >> >> p.
> >> >
> >> >
> >> >
> >> > --
> >> >
> >> >
> >> > ---
> >> > Marco Neumann
> >> > KONA
> >> >
> >> > Join us at SemTech Biz in San Francisco June 3-7 2012 and save 15%
> >> > with the lotico community discount code 'STMN'
> >> > http://www.lotico.com/evt/SemTechSF2012/
> >>
> >>
> >>
> >> --
> >>
> >>
> >> ---
> >> Marco Neumann
> >> KONA
> >>
> >> Join us at SemTech Biz in San Francisco June 3-7 2012 and save 15%
> >> with the lotico community discount code 'STMN'
> >> http://www.lotico.com/evt/SemTechSF2012/
>
>
>
> --
>
>
> ---
> Marco Neumann
> KONA
>
> Join us at SemTech Biz in San Francisco June 3-7 2012 and save 15%
> with the lotico community discount code 'STMN'
> http://www.lotico.com/evt/SemTechSF2012/
>
