Re: [Tracker] Tracker-WARNING **: file is encrypted or is not a database

[Adrien Bustany <abustany gnome org>]

If you can compile a Qt app with  your tools, you should be able to
compile QSparql as well :)

On Fri, 5 Aug 2011 11:49:41 +0530, suparno bose wipro com wrote:
> Adrien.
>         Actually am working on Automotive linux platform . We can only use
> the Host cross platform tools provided
> To me only. So no qsparql is  provided but only tracker-sparql .
>
> I am also fond of Qt only. Is there any way I can compile  the
> qsparql library with my application only?
>
> Thanks
> Suparno
>
> -----Original Message-----
> From: Adrien Bustany [mailto:abustany gnome org]
> Sent: Friday, August 05, 2011 11:43 AM
> To: Suparno Bose (WT01 - Manufacturing & Hi Tech)
> Cc: tracker-list gnome org
> Subject: Re: [Tracker] Tracker-WARNING **: file is encrypted or is
> not a database
>
> Note: don't forget to click "Reply to all" so that your answer goes
> back to the list too. CC-ing back the list
>
> The SPARQL query you pasted is correct, so not sure why you would get
> this error. Can you see a file named 38-nmm.ontology in
> $prefix/share/tracker/ontologies ? I think that query worked for you
> if ran with the tracker-sparql tool, so it should work all the same 
> if
> ran using libtracker-sparql.
>
> I might be a bit stubborn, but QSparql works all fine on ARM, both
> Harmattan and MeeGo use it. I'm insisting a bit because:
> 1. The asynchronous models of GLib and Qt are a bit different, 
> QSparql
>    abstracts that nicely.
> 2. QSparql will make your memory management more c++-y, with objects 
> on
>    stack freed automatically etc. The example code you pasted 
> presents
>    various memory management errors (leaks).
> 3. QSparql allow you do deal with bindings, so that you don't have to
>    escape the data you pass to your queries, and other niceties.
>
> Compiling/packaging QSparql is easy, and it does not take much space.
> If you want to make it minimal, you can enable only the driver you
> need (most likely QTRACKER_DIRECT), and maybe even compile it in
> statically (iirc).
>
> Cheers
>
> Adrien
>
> Le Fri, 5 Aug 2011 11:28:23 +0530,
> <suparno bose wipro com> a Ãcrit :
>
> > Hello Adrien,
> >
> >                 Thanks for you concern. I am developing on an arm
> > platform where qsparql is  not available.
> >
> >
> >
> > I am also getting an error as
> >
> >
> >
> > Error Message 1.44: syntax error, use of undefined prefix `nmm'
> >
> > Can you enlighten me on this error, why we get this  error??
> >
> >
> >
> > Thnks
> >
> > Suparno
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: Adrien Bustany [mailto:abustany gnome org]
> > Sent: Friday, August 05, 2011 11:20 AM
> > To: Suparno Bose (WT01 - Manufacturing & Hi Tech)
> > Cc: martyn lanedo com; tracker-list gnome org
> > Subject: Re: [Tracker] Tracker-WARNING **: file is encrypted or is 
> > not
> > a database
> >
> >
> >
> > Hello Suparno!
> >
> >
> >
> > Did you have a look at QSparql? It'll give you access to Tracker in 
> > a
> > much more Qt-ish way. In any case, you can have a look at the 
> > examples
> > for either library, that might help you get started:
> >
> > libtracker-sparql (not so simple one):
> >
> >
> > http://git.gnome.org/browse/tracker/tree/examples/libtracker-sparql/as
> > ync-connection.c
> >
> > <http://git.gnome.org/browse/tracker/tree/examples/libtracker-sparql/a
> > sync-connection.c>
> >
> > qsparql:
> >
> >
> > https://maemo.gitorious.org/maemo-af/qsparql/blobs/master/examples/spa
> > rql/simple/main.cpp
> >
> > <https://maemo.gitorious.org/maemo-af/qsparql/blobs/master/examples/sp
> > arql/simple/main.cpp>
> >
> >
> >
> > In your case, not sure why tracker_sparql_connection_get would 
> > fail...
> >
> > What platform are you developing on? Are there special restrictions 
> > to
> > the DB access?
> >
> >
> >
> > Cheers
> >
> >
> >
> > Adrien
> >
> >
> >
> > Le Fri, 5 Aug 2011 10:05:28 +0530,
> >
> > <suparno bose wipro com <mailto:suparno bose wipro com> > a Ãcrit :
> >
> >
> >
> > > Hi Martyn,
> >
> > >
> >
> > >                 Here is  what am doing inside my application :
> >
> > >
> >
> > >
> >
> > >
> >
> > >   g_type_init();
> >
> > >
> >
> > >   GError *error = NULL;
> >
> > >
> >
> > >   m_connection = tracker_sparql_connection_get_direct(&error);
> >
> > >
> >
> > >   qDebug() << error->message;
> >
> > >
> >
> > >   if(m_connection != NULL)
> >
> > >
> >
> > >   {
> >
> > >
> >
> > >     gchar *query;
> >
> > >
> >
> > >     query = g_strdup_printf ("SELECT ?url WHERE { ?song a
> >
> > > nmm:MusicPiece ; nie:isStoredAs ?as . ?as nie:url ?url . }");
> >
> > >
> >
> > >     if(0 != query)
> >
> > >
> >
> > >         m_cursor = tracker_sparql_connection_query (m_connection,
> >
> > > query, NULL, &error);
> >
> > >
> >
> > >     else
> >
> > >
> >
> > >         printf("Query is null \n");
> >
> > >
> >
> > >
> >
> > >
> >
> > >     if(0 != error)
> >
> > >
> >
> > >     {
> >
> > >
> >
> > >         g_print("Error Message %s\n", error->message);
> >
> > >
> >
> > >         //qDebug() << error->message;
> >
> > >
> >
> > >         g_free (query);
> >
> > >
> >
> > >     }
> >
> > >
> >
> > >     else
> >
> > >
> >
> > >         printf("No error returned from the SPARQL\n");
> >
> > >
> >
> > >
> >
> > >
> >
> > >     if(0 != m_cursor)
> >
> > >
> >
> > >         print_cursor (m_cursor, "No classes were found to match
> > > search
> >
> > > term", "Classes", TRUE, l_list);
> >
> > >
> >
> > >     else
> >
> > >
> >
> > >         printf("cursor is NULL \n");
> >
> > >
> >
> > >   }
> >
> > >
> >
> > >   else
> >
> > >
> >
> > >   {
> >
> > >
> >
> > >     qDebug() << "connection not establisheds";
> >
> > >
> >
> > >   }
> >
> > >
> >
> > >
> >
> > >
> >
> > > -----Original Message-----
> >
> > > From: Martyn Russell [mailto:martyn lanedo com]
> >
> > > Sent: Thursday, August 04, 2011 6:53 PM
> >
> > > To: Suparno Bose (WT01 - Manufacturing & Hi Tech)
> >
> > > Cc: tracker-list gnome org
> >
> > > Subject: Re: [Tracker] Tracker-WARNING **: file is encrypted or is
> > > not
> >
> > > a database
> >
> > >
> >
> > >
> >
> > >
> >
> > > On 04/08/11 13:31, suparno bose wipro com
> > > <mailto:suparno bose wipro com>
> >
> > > <mailto:suparno bose wipro com <mailto:suparno bose wipro com> >
> > > wrote:
> >
> > >
> >
> > > > Attaching the file
> >
> > >
> >
> > >
> >
> > >
> >
> > > Thanks,
> >
> > >
> >
> > >
> >
> > >
> >
> > > > -----Original Message-----
> >
> > >
> >
> > > > From: Suparno Bose (WT01 - Manufacturing&  Hi Tech)
> >
> > >
> >
> > > > Sent: Thursday, August 04, 2011 6:00 PM
> >
> > >
> >
> > > > To: 'Martyn Russell'
> >
> > >
> >
> > > > Cc: tracker-list gnome org <mailto:tracker-list gnome org>
> >
> > >
> >
> > > > Subject: RE: [Tracker] Tracker-WARNING **: file is encrypted or 
> > is
> >
> > > > not
> >
> > >
> >
> > >
> >
> > > > a database
> >
> > >
> >
> > > >
> >
> > >
> >
> > > > Sorry Martyn ,
> >
> > >
> >
> > > >             I did some mistake. Please find my new log attached.
> >
> > >
> >
> > > > This time it worked fine from the command line but not from the
> >
> > >
> >
> > > > application .
> >
> > >
> >
> > >
> >
> > >
> >
> > > I see, so how are you doing it form the application then? The
> > > command
> >
> > > line tools are there to help you sanity check what you're
> > > application
> >
> > > might be doing.
> >
> > >
> >
> > >
> >
> > >
> >
> > > --
> >
> > >
> >
> > > Regards,
> >
> > >
> >
> > > Martyn
> >
> > >
> >
> > >
> >
> > >
> >
> > > Founder and CEO of Lanedo GmbH.
> >
> > >