Re: [Tracker] Getting all files from tracker

[Jamie McCracken <jamiemcc blueyonder co uk>]

James "Doc" Livingston wrote:
> Hi everyone,

Hi James,

> I've been playing around with Tracker the last few days, and had a
> couple of issues:
>
> First, tracker.pc has "-lmetatracker" in it, but that doesn't exist. it
> should probably be "-ltrackerclient".

this was fixed yesterday in CVS (noticed this when Nautilus would not 
build with it)

> Second, what would be the best way of asking Tracker for all the music
> files? Calling tracker_search_text() with the search string being NULL
> or "" doesn't work, and complains about the lack of search terms.


In tracker, "Music" is a first class object/service so you can get all 
music files very efficiently by calling GetByServiceType in the Files 
interface in Dbus or use the equivalent api call in libtrackerclient.

You can already see the output (and sample source) for this by using the 
tracker-files command line tool :

tracker-files -s Music

will show the first 512 music files on your system.



> I've also tried tracker_search_query() with field, search, keyword and
> query being NULL, but I when I do that it segfaults somewhere around the
> dbus call. Unfortunately I haven't managed to get a useful backtrace
> yet.

yes thats right - tracker-query must have one of keywords, search or 
query set or it will fail (I should make sure this returns an error 
rather than crashing)

If you want to use the query facility you can also specify Music as the 
service parameter here to only query music files (and same for all other 
methdos that take a service parameter)

Hope that helps - it will be cool to get this into rhythmbox to help 
dispel some of the myths/FUD being propogated on d-d-l wrt tracker's 
inclusion in GNOME.

Also once I have the Music dbus interface completed and HAL/Live query 
support going it would be great if Rhythmbox could auto-detect tracker 
and use it automatically if its installed for its main database (should 
be a lot faster than an xml database when number of music files is 
large) - you can use Dbus directly to manipulate tracker so there's no 
need to link to or have hard dependencies on tracker.

Thanks.


--
Mr Jamie McCracken
http://jamiemcc.livejournal.com/