[Qgis-developer] Problem with the MySQL/GDAL implementation in QGIS

[Pavol Hnila]

Hi Jürgen,

I could not find the 7a629ad commit. Yet I have tried the current
master and I admit that after your previous commit 536135a it actually
works fine for most purposes.

The reopenings of every record of the dataset seems a minor issue for
the performance, since it only occurs when working with the Attribute
table. The performance is thus somewhat slower than it was by QGIS 1.8
but it is still OK to work with. Zooming and paning does not lead to
the reopenings of every record of every table (it only leads to each
table being opened and closed separately). Tables that were not
selected from the dataset are rightfully ignored now (thanks to your
commit).

I will rerun the tests on other platforms (I have tried only Windows),
yet I suppose that they will be identical and that we can live with this.

Many thanks,
Pavol


On 22.05.2015 13:42, Jürgen E. Fischer wrote:
> Hi Pavol,
> 
> On Thu, 21. May 2015 at 12:37:49 +0200, Pavol Hnila wrote:
>> Is there a chance that someone corrects this particular code for
>> the next release?
> 
> Check current master.  The commit 7a629ad from Sandro Mani should
> cure the problem.   I also should help with other performance
> problem introduced by the reopening of the OGR data source on each
> layer feature iteration.
> 
> 
> Jürgen
> 
> 
> 
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