[Digikam-users] How is Nepomuk integration supposed to work?

[Paul Worrall]

On Friday 02 November 2012 09:34:23 Simon Cropper wrote:
> On 02/11/12 07:07, Paul Worrall wrote:
> > I have selected "Store metadata from digiKam in Nepomuk", then I set a
> > rating for one of my photos (e.g. three stars).  When I select the same
> > photo in Dolphin it has no stars assigned.  Similarly if I set a tag in
> > digiKam, the tag does not appear in Dolphin.
> > 
> > I have also tried the "Fully Resynchronise again" button.  This button
> > stays depressed when I click on it, but nothing else seems to happen.
> > None of my digiKam  tags or ratings show up in Dolphin.
> > 
> > Maybe I've missed something?
> 
> Hi Paul,
> 
> I don't have Nepomuk running so I can't test but I was under the
> impression it only stored file data.
> 
> Check that you tags, ratings, comments and other metadata are being
> stored in your images. Trial one file then see if you can see the data
> in other applications - like Dolphin.
> 
> If you can't se your data it is not Nepomuk it is the fact that your
> metadata is not being saved to file. Check the settings for this in the
> "Digikams Preferences"
> 
> Once you established the file's metadata is being updated rerun the
> indexer for Nepomuk to see if they appear.

Thanks for your suggestions Simon.

I've got digiKam set to write image tags, caption and title and rating 
metadata to the file, although I would not have thought this was necessary in 
order for digiKam to store metadata in the Nepomuk database.

1.  Changes to tags, caption and rating are still not visible in Dolphin, 
although it does show things like the camera make and model which must have 
been read into Nepomuk from the file's metadata, and I can run a nepomuk search 
using these fields.

2. If I open a file in Gwenview and use Plugins=>Images=>Metadata=>Edit all 
Metadata, then I can see that the tags, caption and title are present in 
various metadata fields confirming that they have been written to the file.

3. In Gwenview, the "Semantic information" side panel does not show the 
rating, tags or description that I assigned in digiKam. I think this shows 
that the data has not been synchronised with Nepomuk.

4. Nepomuk is set to index the folder containing my photos

5. I don't see any way to rerun the Nepomuk indexer, but I think it normally 
detects changes to files automatically.

In summary, I do not see any sign that the digiKam tags, ratings, caption and 
title etc. are being stored in Nepomuk.

-- 
Paul