On 17/03/10 02:09, Zheng, Huan wrote:
Hi,
Hi,
Is it possible for tracker to search like “ SELECT ?p WHERE {?p a
nmm:MusicPiece . ?p nmm:performer [nmm:artistName ‘T*’]}”
Please note, I used T* inside artistName, I want to search songs that
their artist name start with T.
Or further more, artist name to fit for some other regular expression.
Yes, you can use:tracker-sparql -q "select ?p nmm:artistName(?a) where { ?p a nmm:MusicPiece ; nmm:performer ?a }"
However, you might want to refine this a little. Perhaps using:tracker-sparql -q "select ?p nmm:artistName(?a) nie:title(?p) where { ?p a nmm:MusicPiece ; nmm:performer ?a }"
That way you get the track name too. For doing filters you can use either fn:starts-with as below:tracker-sparql -q "select ?p nmm:artistName(?a) nie:title(?p) where { ?p a nmm:MusicPiece ; nmm:performer ?a . FILTER (fn:starts-with(nmm:artistName(?a), \"T\")) }"
Or a regex:tracker-sparql -q "select ?p nmm:artistName(?a) nie:title(?p) where { ?p a nmm:MusicPiece ; nmm:performer ?a . FILTER regex(nmm:artistName(?a), \"jovi\", \"i\") }"
This would find all of bon jovi's hits for example. Hope this helps. -- Regards, Martyn _______________________________________________ tracker-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/tracker-list
