Re: [Tracker] Does tracker support uniquie object-id across databases

[Philip Van Hoof <spam pvanhoof be>]

On Sat, 2010-05-22 at 07:24 -0700, Remo Remo wrote:
> i thought object-id is 32 bit integer, and not uuid, if this is not
> the case, then i fear i won't be able 2 use the tracker, i hope
> there's some solution.. do we able to internally customize the unique
> tag/object-id for each metadata stored in database.. and if it is
> possible, then what are the modules i need to customize to suit in our
> environment..

We recently added the tracker:id() function for this purpose. It's not
part of any RDF or SPARQL spec and completely custom / specialized for
Tracker use. So if you do use this, your queries aren't compatible with
any other SPARQL or RDF product.

It's so new that we have not documented it yet, it's also not available
in any release yet (afaik).

Cheers,

Philip

> ______________________________________________________________________
> From: Adrien Bustany <abustany gnome org>
> To: Remo Remo <remo rremo yahoo com>
> Cc: tracker-list gnome org
> Sent: Sat, May 22, 2010 7:07:54 PM
> Subject: Re: [Tracker] Does tracker support uniquie object-id across
> databases
>
> On Sat, 22 May 2010 00:18:47 -0700 (PDT), Remo Remo
> <remo rremo yahoo com>
> wrote:
> > Hi,
> >
> > does tracker support assigning unique object-id for each piece of
> > metadata across databases. 
> > For e.g. if id: 123 is assigned to Artist: "Enrique" then this ID
> should
> > not be present in other tables/databases that tracker is
> maintaining.
> > This will be helpful features by bookmarking through object-Id.
> >
> > Regards,
> > Remo
>
> Tracker does use uuid to generate urns if I'm right, so they should be
> more
> or less unique across databases... Needs confirmation though.
>
> Cheers
>
> Adrien
>
>
>
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-- 


Philip Van Hoof
freelance software developer
Codeminded BVBA - http://codeminded.be