[gdal-dev] Does OGR support GeoPackage enums in write mode (or at all?)

[Andrea Aime]

On Wed, Apr 15, 2020 at 11:36 AM Even Rouault <even.rouault at spatialys.com>
wrote:

> > http://www.geopackage.org/spec/
>
>
>
> My understanding of table 27 is that it is just to define constraints on
> the values of a column, but not a way to establish a integer<-->string
> mapping as you'd like. Unless I'm missing something. Of course you could
> create an auxiliary table with the mapping, but I'm not aware of a
> standardized way of registering it.
>

I had the idea because Table 27 lists enum values (in the "value" column)
as 1, 2, 3, and while not providing an example of it,
gpkg_data_column_constraints
also has a "description" column. so my current guess is that one could use
integer numbers in "value", and provide the name of the value in
"description".
I'm going to follow up with the OGC spec lead to see if that was an actual
option, or just a thing in my mind... and will let you know what comes out
of it :-D

Cheers
Andrea

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