Re: [Tracker] Request for review, API allowing external software like MTP daemons to get metadata as correct sparql insert

[Philip Van Hoof <philip codeminded be>]

Hey Guys,

Again, is somebody planning to review this? If not I'm planning to go
ahead and push it to master.

Kind regards,

Philip

On Sun, 2012-12-23 at 19:16 +0100, Philip Van Hoof wrote:
> Is somebody planning to review this?
>
> Martyn? JÃrg? Alexander? Carlos? :)
>
> Kind regards,
>
> Philip
>
> On Mon, 2012-12-17 at 10:35 +0100, Philip Van Hoof wrote:
> > Hi guys,
> >
> > I have finished my feature that allows MTP daemons to through an API get
> > a correct SPARQL INSERT query with extracted metadata for a file.
> >
> > This is the branch: extract-sparql 
> > http://git.gnome.org/browse/tracker/log/?h=extract-sparql
> >
> > This is the currently only commit:
> > http://git.gnome.org/browse/tracker/commit/?h=extract-sparql&id=e4af9b34e22b60d37251426a29dfcd9b566f6e0e
> >
> >
> > This is the newly added API:
> >
> >     static void
> >     on_finished (GObject *none, GAsyncResult *result, gpointer user_data)
> >     {
> >         GMainLoop *loop = user_data;
> >         GError *error = NULL;
> >         gchar *sparql = tracker_extract_get_sparql_finish (result, &error);
> >     
> >         if (error == NULL) {
> >                 g_print ("%s", sparql);
> >                 g_free (sparql);
> >         } else {
> >                 g_error("%s", error->message);
> >         }
> >     
> >         g_clear_error (&error);
> >     
> >         g_main_loop_quit (loop);
> >     }
> >     
> >     int main (int argc, char **argv)
> >     {
> >         const gchar *file = "/tmp/file.png";
> >         const gchar *dest = "file:///tmp/destination.png"
> >         GMainLoop *loop;
> >     
> >         g_type_init();
> >     
> >         loop = g_main_loop_new (NULL, FALSE);
> >         tracker_extract_get_sparql (file, dest, NULL, time(0),
> >                                     time(0), on_finished, loop);
> >     
> >         g_main_loop_run (loop);
> >     
> >         g_object_unref (loop);
> >     
> >         return 0;
> >   }
> >
> > I have also added usage of the API to the tracker-sparql binary:
> >
> > $ cp /home/pvanhoof/Documents/Photos/pasfoto-small.png /tmp/tempfile.png
> > $ /opt/tracker/bin/tracker-sparql --metadata-file-path=/tmp/tempfile.png \
> >     --metadata-graph-urn=urn:uuid:173b2520-4828-11e2-bcfd-0800200c9a66 \
> >     --metadata-dest-url=file:///home/pvanhoof/Documents/Photos/photo.png
> >
> >
> > INSERT SILENT {
> > GRAPH <urn:uuid:173b2520-4828-11e2-bcfd-0800200c9a66> {
> > _:file a nfo:FileDataObject , nie:InformationElement ;
> >      nfo:fileName "photo.png" ;
> >      nfo:fileSize 38155 ;
> >      nfo:fileLastModified "2012-12-17T09:20:18Z" ;
> >      nfo:fileLastAccessed "2012-12-17T09:20:18Z" ;
> >      nie:isStoredAs _:file ;
> >      nie:url "file:///home/pvanhoof/Documents/Photos/photo.png" ;
> >      nie:mimeType "image/png" ;
> >      a nfo:FileDataObject ;
> >      nie:dataSource <urn:nepomuk:datasource:9291a450-1d49-11de-8c30-0800200c9a66> ;
> >      tracker:available true .
> > _:file a nfo:Image , nmm:Photo ;
> >      nfo:width 150 ;
> >      nfo:height 192 ;
> >      nmm:dlnaProfile "PNG_LRG" ;
> >      nmm:dlnaMime "image/png" .
> >
> > }
> > }
> >
> > $ 
> >
> >
> > Please review.
> >
> > Kind regards,
> >
> > Philip

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