[Digikam-devel] [digikam] [Bug 320185] New: Compatibility issue with hierarchical tags between Digikam and WLPG (and perhaps other software).

[kavish at hetnet.nl]

https://bugs.kde.org/show_bug.cgi?id=320185

            Bug ID: 320185
           Summary: Compatibility issue with hierarchical tags between
                    Digikam and WLPG (and perhaps other software).
    Classification: Unclassified
           Product: digikam
           Version: unspecified
          Platform: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: Metadata
          Assignee: digikam-devel at kde.org
          Reporter: kavish at hetnet.nl

I'm using digikam 2.5.0 in Ubuntu 12.04 LTS (meanwhile changed to Kubuntu). My
wife is keeping the same photo collection on a MS Windows box in WLPG. When I
create hierarchical tags in Digikam, e.g. "people/Peter", this will show up in
WLPG as a non hierarchical tag ("Peter"). When I go the other way around and
create the tags in WLPG, everything is fine in Digikam. This forces me to do
all editing and tagging on the Windows box, although I prefer to use Digikam.

After some more investigation I found that the problem might be in the Dublin
Core xmp tags. Digikam is not saving the hierarchy in there. MS does, but that
might be a MS specific way of doing. When googling on this, I found that some
photo managers are doing the same, others with a different syntax and others
just like Digikam.

So, perhaps this is not really a "bug" in Digikam, but just the result of using
a standard (xmp) that leaves too much options for vendors to lock their users
to their products. But knowing that doesn't solve the problem.

I would like to suggest to create a solution that allows to customize the way
Digikam is using metadata tags. I realize that it wouldn't be a good idea to
just open it for free manual editing, but how about a menu that allows the user
to choose metadata compatibility with WLPG, Photo Shop or any other great
photomanager, including the default "Digikam"? And perhaps also the same choice
when exporting / importing photo's?

Reproducible: Always

Steps to Reproduce:
1. Create hierarchical tags on photos in Digikam.
2. Load the photos into WLPG and check the tags.
3. Try also to create such tags in WLPG see how that shows up in Digikam.
Actual Results:  
The best option to use both is editing all tags in WLPG only. When creating
hierarchical tags in Digikam, the hierarchy is lost when the photos are loaded
into WLPG.

Expected Results:  
Compatibility between both.

I'm not using the latest version of Digikam, but I didn't find any information
that might suggest that this problem is solved meanwhile.

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