Re: [Shotwell] How to delete a photo from the shotwell databse
My program doesn't do a lot more than recent versions of Shotwell do. It is just a bit more convenient for adding tags and titles. The user sees the photo, and there is a window where he can add tags (it is actually a drop-down list with predefined tags for my purposes) and a window where he can enter a description. The tags get added to the Shotwell tag table, and the description is used as the title. However, there is also a SQLITE3 virtual table, containing the photoid, the description, and the tags. The SQLITE full-text search facility allows you to do sophisticated searches , for example find all the photos with the words "Larry " OR "Diane" AND NOT "Fred". It also allows proximity searches. Since the description field gets stored in the phototable as the title, Shotwell can also perform full-text search (which works very well - I like the incremental search) but it is limited to an AND operation - find the photos whose title contains ALL the words. I think it would be easy (!) in Shotwell to make the windows for editing tags and titles larger, which would be much more convenient. The use of a virtual table that contains the title and the tags would allow a more sophisticated search facility: Look for grandchildren (a tag) and "Harry OR Sally" to find all the photos with the tag "grandchildrer" with either Harry or Sally in the title. On Mon, 2018-04-09 at 09:18 +0200, Jens Georg wrote: > > > > Do you plan to remove the list of tags, and have one entry per tag? > Yes, something like that. Make proper normalized tables etc. > > > > > > > The problem for my app was given a photo id, find all the tag table > > entries with this "thumb id" and then remove the thumb and write > > the > > data back, rather than just finding all the records with the thumb > > and > > deleting them. > > > > I realize that not many people are going to want to process the > > data > > outside of Shotwell, but having a good description of the various > > tables and their relationships would be useful. > There is a little bit of information available here: > > https://wiki.gnome.org/Apps/Shotwell/Architecture/Database > > > > > > > Many years ago I wrote a program to catalog photos (this was before > > I > > heard about Shotwell. It used a database system with full-text > > search > > abilities. > > When I switched to Shotwell, I rewrote the program in Python, and > > added a virtual table to the Shotwell database to make Boolean > > searching easy. This I can use all the of the SQLITE3 full-text > > search > > capabilities to find photos. > Would you care to explain a bit deeper what you are doing there?___ shotwell-list mailing list shotwell-list@gnome.org https://mail.gnome.org/mailman/listinfo/shotwell-list
Re: [Shotwell] How to delete a photo from the shotwell databse
Do you plan to remove the list of tags, and have one entry per tag? Yes, something like that. Make proper normalized tables etc. The problem for my app was given a photo id, find all the tag table entries with this "thumb id" and then remove the thumb and write the data back, rather than just finding all the records with the thumb and deleting them. I realize that not many people are going to want to process the data outside of Shotwell, but having a good description of the various tables and their relationships would be useful. There is a little bit of information available here: https://wiki.gnome.org/Apps/Shotwell/Architecture/Database Many years ago I wrote a program to catalog photos (this was before I heard about Shotwell. It used a database system with full-text search abilities. When I switched to Shotwell, I rewrote the program in Python, and added a virtual table to the Shotwell database to make Boolean searching easy. This I can use all the of the SQLITE3 full-text search capabilities to find photos. Would you care to explain a bit deeper what you are doing there? ___ shotwell-list mailing list shotwell-list@gnome.org https://mail.gnome.org/mailman/listinfo/shotwell-list
Re: [Shotwell] How to delete a photo from the shotwell databse
Do you plan to remove the list of tags, and have one entry per tag? The problem for my app was given a photo id, find all the tag table entries with this "thumb id" and then remove the thumb and write the data back, rather than just finding all the records with the thumb and deleting them. I realize that not many people are going to want to process the data outside of Shotwell, but having a good description of the various tables and their relationships would be useful. Many years ago I wrote a program to catalog photos (this was before I heard about Shotwell. It used a database system with full-text search abilities. When I switched to Shotwell, I rewrote the program in Python, and added a virtual table to the Shotwell database to make Boolean searching easy. This I can use all the of the SQLITE3 full-text search capabilities to find photos. I do all my photo editing in Shotwell, but use my program to organize them (adding titles, tags, etc). To delete photos, I used to just add a tag 'deleteme' then went into Shotwell and deleted all the photos with that tag. But then I decided to try to do the delete in my program, and thus the question I posted. I THINK I have it all working now. On Tue, 2018-04-03 at 10:13 +0200, Jens Georg wrote: > Hi, > > The tombstonetable is for images that got deleted from disk without > Shotwell > > Also please note that I plan to clean-up the database scheme this > unstable cycle, > getting rid of those generated ids, the odd tag handling and to > properly > add > geolocation information. > > > > > ___ > > shotwell-list mailing list > > shotwell-list@gnome.org > > https://mail.gnome.org/mailman/listinfo/shotwell-list___ shotwell-list mailing list shotwell-list@gnome.org https://mail.gnome.org/mailman/listinfo/shotwell-list
Re: [Shotwell] How to delete a photo from the shotwell databse
Hi,
The tombstonetable is for images that got deleted from disk without
Shotwell
Also please note that I plan to clean-up the database scheme this
unstable cycle,
getting rid of those generated ids, the odd tag handling and to properly
add
geolocation information.
On 03/04/18 01:24, Larry Bradley wrote:
However, there are other tables that refer to photos (eventtable,
Eventtable is referenced from phototable: Eventtable.id <=>
Phototable.event_id.
tagtable) that will need to be updated. Can someone tell me how
Shotwell
deletes entries in these tables?
Tagtable.photo_id_list contains a list of images associated with that
tag. For photos they look like this: thumb0cc1 – i.e.
"thumb" + the hex representation of the photo id. Or in printf-terms:
("thumb%016x", phototable.id).
For videos it is the same (IIRC), though with "video-" instead of
"thumb" and from the videotable.id.
For example, the tag table. Given the photo id, I know the thumbnail
name. The problem is to find that name (eg thumb0007f) in the tag
table's photo_id_list. Also, I need to find the photoid in the list as
well, to delete the Folders entry.
Any help on deleting entries from the various shotwell tables, given a
photo id, would be appreciated
Thanks
Other things... just noting from looking at the database:
- There is a link phototable.id <=> eventtable.primary_source_id as
well. I guess it either sets the date of the event and/or thumbnail.
- Reference from backingphototable: backingphototable.id <=>
phototable.editable_id.
There is a tombstonetable which I cannot quite figure out does or how
it is referenced
The saved search table I have not looked at so much... but also seems
simple, though not needed for your application, I guess.
Hope that helps.
~Jørn
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Re: [Shotwell] How to delete a photo from the shotwell databse
Hi,
On 03/04/18 01:24, Larry Bradley wrote:
However, there are other tables that refer to photos (eventtable,
Eventtable is referenced from phototable: Eventtable.id <=>
Phototable.event_id.
tagtable) that will need to be updated. Can someone tell me how Shotwell
deletes entries in these tables?
Tagtable.photo_id_list contains a list of images associated with that
tag. For photos they look like this: thumb0cc1 – i.e.
"thumb" + the hex representation of the photo id. Or in printf-terms:
("thumb%016x", phototable.id).
For videos it is the same (IIRC), though with "video-" instead of
"thumb" and from the videotable.id.
For example, the tag table. Given the photo id, I know the thumbnail
name. The problem is to find that name (eg thumb0007f) in the tag
table's photo_id_list. Also, I need to find the photoid in the list as
well, to delete the Folders entry.
Any help on deleting entries from the various shotwell tables, given a photo
id, would be appreciated
Thanks
Other things... just noting from looking at the database:
- There is a link phototable.id <=> eventtable.primary_source_id as
well. I guess it either sets the date of the event and/or thumbnail.
- Reference from backingphototable: backingphototable.id <=>
phototable.editable_id.
There is a tombstonetable which I cannot quite figure out does or how it
is referenced
The saved search table I have not looked at so much... but also seems
simple, though not needed for your application, I guess.
Hope that helps.
~Jørn
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[Shotwell] How to delete a photo from the shotwell databse
I'm playing around with a Python GTK program to work with my Shotwell data. Works fine. I can display images, search for tags, etc, make changes to things - all works well. I've added the ability to delete images - I can delete the record from the phototable, as well as the photo and the thumbnail. However, there are other tables that refer to photos (eventtable, tagtable) that will need to be updated. Can someone tell me how Shotwell deletes entries in these tables? For example, the tag table. Given the photo id, I know the thumbnail name. The problem is to find that name (eg thumb0007f) in the tag table's photo_id_list. Also, I need to find the photoid in the list as well, to delete the Folders entry. Any help on deleting entries from the various shotwell tables, given a photo id, would be appreciated Thanks -- Larry Bradley Orleans (Ottawa) Canada___ shotwell-list mailing list shotwell-list@gnome.org https://mail.gnome.org/mailman/listinfo/shotwell-list
