Re: [Tracker] Tags, metadata and date fields

[Adrien Bustany <abustany gnome org>]

On Mon, 05 Apr 2010 09:07:41 -0400, Nikolaus Rath <Nikolaus rath org>
wrote:
> Adrien Bustany <abustany-rDKQcyrBJuzYtjvyW6yDsg public gmane org>
writes:
> > Information is entered in Tracker either by "miners" or directly by
> > applications. The miners are small modules that crawl data sources
> > (for example, your filesystem) and insert data in Tracker. Currently
> > Tracker ships with two miners, one crawling the FS and another the
> > installed applications. So basically what you have to do is configure
> > the FS miner to ensure it's crawling the right dirs for you.
>
> But this miner is going to add only the plain text contents of the
> files, right? Or does it e.g. look in the extended attributes for
> additional metadata?
Actually, the miner will enter basic metadata into Tracker (filename,
modification date etc.) and will search then for an extractor for that
file.
The extractor knows about the file format, and therefor extracts all the
metadata (for example title, duration, exif metadata...).
Extended attributes are not used AFAIK.

> > If you want to add custom triples in the store, you can use the
> > tracker-sparql tool.
>
> Just to make sure: my metadata, keywords and timestamps would be such
> additional triplets, right?
exactly

> Best,
>
>    -Nikolaus