[Qgis-developer] Geospackage Slow in QGIS

[Andrea Peri]

Hi,

I have changed my opinin.
>From +1 to +0

Infact I discovered just now that gdal driver for spatialite don't
seem to support tables with more than 1 geometrt field.
Almost on QGIS.

Andrea


2014-05-17 22:19 GMT+02:00 Jeremy Palmer <JPalmer at linz.govt.nz>:
> I'm wondered why QGIS needs a native SpatiaLite provider and connection dialogue any more. Unlike other database providers such as PostGIS, Oracle, MSSQL the SpatiaLite provider doesn't seem to have anything special that requires a QGIS provider. From a users perspective it just adds to the confusion and complexity for adding data. Why not just use GDAL/OGR for both Geopackage and Spatialite?
>
> Cheers
> Jeremy
> ________________________________________
> From: Stefan Keller [sfkeller at gmail.com]
> Sent: Sunday, 18 May 2014 12:24 a.m.
> To: Martin Dobias
> Cc: Jeremy Palmer; qgis-developer at lists.osgeo.org
> Subject: Re: [Qgis-developer] Geospackage Slow in QGIS
>
> Hi Martin
>
> It has a different binary encoding compared to Spatialite.
> And in addition it integrates raster tiles (MBTiles) and metadata.
>
> -S.
>
>
> 2014-05-17 14:10 GMT+02:00 Martin Dobias <wonder.sk at gmail.com<mailto:wonder.sk at gmail.com>>:
> Hi
>
> On Sat, May 17, 2014 at 2:32 PM, Jeremy Palmer <JPalmer at linz.govt.nz<mailto:JPalmer at linz.govt.nz>> wrote:
>> 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?
>
> Actually I am wondering how different is the format of GeoPackage from
> the format of SpatiaLite... we could use our native SpatiaLite
> provider also for GeoPackage files if they are close enough. Any
> ideas?
>
> Regards
> Martin
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-- 
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Andrea Peri
. . . . . . . . .
qwerty àèìòù
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