Hi,

There is something about WFS 2 and paging in 
https://gdal.org/drivers/vector/wfs.html

“Paging with WFS 2.0
The WFS driver will automatically detect if server supports paging, when 
requesting a WFS 2.0 server. The page size (number of features fetched in a 
single request) is limited to 100 by default when not declared by the server. 
It can be changed by setting the OGR_WFS_PAGE_SIZE configuration option, or by 
specifying COUNT as a query parameter in the URL of the connection string.

If only the N first features must be downloaded and paging through the whole 
layer is not desirable, the OGR_WFS_PAGING_ALLOWED configuration option should 
be set to OFF.”

So by default normally GDAL goes to paging mode that makes it possible to read 
the whole featuretype, possibly restricted with BBOX or other filters but it 
should be possible to disable paging with --config OGR_WFS_PAGING_ALLOWED OFF. 
I would try that.

-Jukka Rahkonen-

Lähettäjä: gdal-dev <gdal-dev-boun...@lists.osgeo.org> Puolesta Hernán De 
Angelis
Lähetetty: maanantai 29. marraskuuta 2021 12.43
Vastaanottaja: gdal-dev@lists.osgeo.org
Aihe: [gdal-dev] ogr2ogr and WFS 2

Dear all

I seem to have problems understanding how ogr2ogr interacts with WFS and hope 
someone would be able to clarify.

I have this WFS:

https://stationsregister.miljodatasamverkan.se/geoserver/stationsregistret/wfs?

The capabilities document states that it supports WFS 1.0.0, 1.1.0 and 2.0.0.

If I do:

ogr2ogr -f GPKG test.gpkg 
"WFS:https://stationsregister.miljodatasamverkan.se/geoserver/stationsregistret/wfs?SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&TYPENAME=stationsregistret:active_site&MAXFEATURES=100";

I get a small and nice GPKG file very fast.

But if I do:

ogr2ogr -f GPKG test.gpkg 
"WFS:https://stationsregister.miljodatasamverkan.se/geoserver/stationsregistret/wfs?SERVICE=WFS&VERSION=2.0.0&REQUEST=GetFeature&TYPENAMES=stationsregistret:active_site&COUNT=100";

It downloads the whole layer.

This behaviour can be seriously impractical for services exposing a large 
number of features.


Pay attention that if I do:

curl 
"https://stationsregister.miljodatasamverkan.se/geoserver/stationsregistret/wfs?SERVICE=WFS&VERSION=2.0.0&REQUEST=GetFeature&TYPENAMES=stationsregistret:active_site&COUNT=100";<https://stationsregister.miljodatasamverkan.se/geoserver/stationsregistret/wfs?SERVICE=WFS&VERSION=2.0.0&REQUEST=GetFeature&TYPENAMES=stationsregistret:active_site&COUNT=100>

it retrieves a short document fast with just 100 features. The same of course 
if I invoke the service using WFS 1.0.0 or 1.1.0.


What is going on here? Is it me that I misunderstood something about how 
ogr2ogr is supposed to interact with WFS services?

Using GDAL 3.4.0, released 2021/11/04. But the same behaviour was observed in 
3.3.2.


Thanks in advance for any clarification


Hernán


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