[Bug 252406] New: "Import EXIF" does not update cached Metadata

https://bugs.kde.org/show_bug.cgi?id=252406

           Summary: "Import EXIF" does not update cached Metadata
           Product: digikam
           Version: 1.4.0
          Platform: openSUSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Metadata
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:           1.4.0 (using KDE 4.4.4)
OS:                Linux

I use the Metadata->Import EXIF functionality regularly to copy the EXIF
information from the first used image back to the generated panorama (which in
my case does not have any EXIF written).
Unfortunately, this action does not update the cached Metadata of the panorama
which still shows up as having no metadata at all. Especially when trying to
add geolocation information later, it will fail for this image because it has
no EXIF at all.
"Import EXIF" therefore should update the stored metadata for the selected
picture after completition.

Reproducible: Always

Steps to Reproduce:
Take a picture without metadata, import EXIF from another picture

Actual Results:  
The picture itself has the EXIF added, but digiKam still shows no EXIF

Expected Results:  
digiKam should update its metadata cache to reflect the new EXIF

OS: Linux (x86_64) release 2.6.34.7-0.3-default
Compiler: gcc

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

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          Component|Metadata                    |Kipiinterface




--- Comment #1 from Gilles Caulier <caulier gilles gmail com>  2010-09-26 14:32:03 ---
It must through digiKam kipi interface. Perhaps we have forget to bring digiKam
DB with metadata changes done by the plugin...

Gilles Caulier

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[Marcel Wiesweg]

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--- Comment #2 from Marcel Wiesweg <marcel wiesweg gmx de>  2010-09-26 15:24:13 ---
Gilles, what would be the KIPI API method to call for this purpose?

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--- Comment #3 from Gilles Caulier <caulier gilles gmail com>  2010-09-26 19:28:31 ---
Marcel,

Has you can see there, i use this method in plugin :

http://lxr.kde.org/source/extragear/graphics/kipi-plugins/metadataedit/plugin_metadataedit.cpp#335

In digiKam kipi interface, look what's done :

http://lxr.kde.org/source/extragear/graphics/digikam/utilities/kipiiface/kipiinterface.cpp#152

All sound fine for you ?

Gilles Caulier

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--- Comment #4 from Marcel Wiesweg <marcel wiesweg gmx de>  2010-09-29 10:16:14 ---
I see.
This currently triggers a "normal" rescan, as if the modification date changes.
For some cases, like reported here, it will be appropriate to have a full
rescan, as done by "Reread metadata from file" in the menu.
But in other cases, this will not be appropriate, for example when the JPEG
lossless plugin only has rotated the image and (probably) calls refresh to
update the thumbnail.

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--- Comment #5 from Gilles Caulier <caulier gilles gmail com>  2010-09-29 10:22:23 ---
So, perhaps a new kipi interface method must be designed for this task in case
of plugin need to rescan indeep metadata. Fine for you ?

Gilles

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--- Comment #6 from Marcel Wiesweg <marcel wiesweg gmx de>  2010-09-29 17:35:51 ---
Yes, sounds good. I would propose at least two distinct cases: Image data
changed (JPEG lossless, batch tools) and metadata changed (metadata edit, GPS
correlator). Not sure if there are other use cases of this method.

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--- Comment #7 from Marcel Wiesweg <marcel wiesweg gmx de>  2010-09-29 17:38:48 ---
correcting myself, the GPS correlator of course works changing attributes, as
does the time adjust plugin.

(Another related need, thinking of batch plugin or raw converter, would be to
indicate the relation of images (xy.jpg is produced by raw conversion from
xy.mrw) , now that we have lossless editing.)

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[Frédéric COIFFIER]

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--- Comment #8 from Frédéric COIFFIER <[hidden email]> ---
Problem still present in digiKam 4.2.0.
When I import EXIF, if I do not manually "Reread metadata", nothing happens (no
date change, no new title or other metadata). So, Import EXIF could appear
useless...

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|1.4.0                       |4.2.0

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Frédéric COIFFIER <[hidden email]> changed:

           What    |Removed                     |Added
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            Version|4.2.0                       |4.5.0

--- Comment #9 from Frédéric COIFFIER <[hidden email]> ---
Still present in digiKam 4.4.0.

Marcel, Gilles : Any news about this problem ?
Could you set it as CONFIRMED ?

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--- Comment #10 from [hidden email] ---
GPSCorrelator is not a kipi plugins anymore. It have been integrated as well in
digiKam core.

This file still valid using last digiKam 5.0.0 ?

Gilles Caulier

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          Component|Kipiinterface               |Geolocation-Editor

--- Comment #11 from [hidden email] ---
This problem still reproducible using digiKam AppImage bundle 5.4.0 pre release
?

It available at this url :

https://drive.google.com/drive/folders/0BzeiVr-byqt5Y0tIRWVWelRJenM

Gilles Caulier

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