[Qgis-developer] Geospackage Slow in QGIS

[Stefan Keller]

Hi Jeremy

Is this PRAGMA integrity_check really the bottle neck?
Is it an integrity check on a data type (e.g. integer - its probably
actually an integrity check on SRID)?
Can you point to the code?

Yours, Stefan



2014-05-17 9:32 GMT+02:00 Jeremy Palmer <JPalmer at linz.govt.nz>:

> I've just been using the new implementation of Geopackage in QGIS :)
> However each map render or feature info is very slow for large database
> files - even with the new GDAL/OGR Geopackage spatial index support. Each
> time QGIS renders a new map view or executes a feature info it re-opens the
> Geopackage file in QgsOgrFeatureIterator via OGROpen, and the Geopackage
> driver open method runs PRAGMA integrity_check which is very slow (4 secs
> with my 2GB test file). This integrity check is actually a Geopackage
> requirement.
>
> How can this be fixed? At the in QGIS or GDAL/OGR level?
>
> Cheers,
> Jeremy
>
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