[QGIS-Developer] issues in QGIS Server 2,18

[René-Luc Dhont]

Hi Giovanni,

I have found the reason why QGIS Server 2.18 and probably 3 are slower 
than 2.14 in generating GeoJSON.
I'll fix it.

Regards,
René-Luc

Le 09/03/2018 à 17:43, Régis Haubourg a écrit :
> Hi Giovanni,
>  GetFeatures  can output GML with a different format.
> What is sure is that GeoJSON spec doesn't leave any choice, unless we 
> go for a proprietary output format allowing another SRS.
> I'll keep that in mind when testing OGC compliancy for WFS. We are 
> working on that currently to evaluate how much work is needed to reach 
> a certification for WFS.
> Regards
> Régis
>
> 2018-03-09 14:34 GMT+01:00 Giovanni Manghi <giovanni.manghi at gmail.com 
> <mailto:giovanni.manghi at gmail.com>>:
>
>     Hi René-Luc,
>
>
>
>     > Le 01/03/2018 à 12:52, Giovanni Manghi a écrit :
>     >> Hi all,
>     >> now that 2.18 is LTR I guess that many have also updated their QGIS
>     >> Server installation to this release. Problem is that I see a few
>     >> issues in 2.18 and would like to have gsome feedback from others.
>     >>
>     >> *) slower: it seems this version is slower compared to 2.14, at
>     least
>     >> for some specific request like WFS GetFeatures. See for example:
>     >>
>     >> https://issues.qgis.org/issues/18249#note-1
>     <https://issues.qgis.org/issues/18249#note-1>
>     >>
>     >> where in the same condition (same server, same postgis
>     datasource of
>     >> around ~25000 polygons) 2.18 is about 30 seconds slower than 2.14.
>     >
>     > This issue is simply due to the transformation of the geometry
>     from the
>     > layer CRS to the GeoJSON CRS standard: EPSG:4326
>
>     ok thanks, but one doubt: I guess that this change (compared to 2.14)
>     was to make qgis server more compliant and this also means that we
>     need to accept that for such requests will be always slower than it
>     was before? sorry for the dumb question as I'm not much into the ogc
>     internals.
>
>
>     cheers
>
>     -- G --
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