[Qgis-developer] loading multiple wfs layers causes unexpected behaviour

[Richard Duivenvoorde]

Hi Raymond,

I first tested in 2.18.1, and that one just worked, no matter how many 
times. Also the saving/opening of the project.

Then I went to a 2.14.7 version I have, and then one FAILED. In the 
debug information (you run debug version from cli don't you ;-) ) I found:
DescribFeatureType Failed
Googling that I found 'qgis wfs DescribFeatureType Failed' I found:

http://gis.stackexchange.com/questions/205926/qgis-2-16-adding-certain-wfs-failed

which actually talks about exact the same service! Pointing to:
http://hub.qgis.org/issues/15395
which says:
Fixed per 4bcbc1e (and backported in master_2 in f17f6ac, and in 
release-2_16 a0e3e76)

pointing to this commit:

https://github.com/qgis/QGIS/commit/4bcbc1e4e7ce89237e48067e352d50079fdfa4a6

which looks like it had to handle an uncommon capabilities construct 
from the ruimtelijkeplannen.nl service ....

So I think 2.14 is not patched? You need to have latest 2.18 or 2.16 ...

maybe Even can comment on this? Is it possible to bring this fix in 2.14 
(LTR?)

Regards,

Richard Duivenvoorde



On 12/10/2016 01:53 PM, Raymond Nijssen wrote:
> import urllib
> #from qgis.core import import
> import time
>
> plangebied = 'NL.IMRO.0796.0002120-1301'
>
> '''
> params = {
>     'service': 'WFS',
>     'version': '1.0.0',
>     'request': 'GetFeature',
>     'typename': 'union',
>     'srsname': "EPSG:23030"
> }
> '''
>
>
> def getWfsLayer(service, typename, filter):
>     params = {
>         'typename': typename,
>         'filter': filter,
>         'srsname': 'EPSG:28992',
>         #'restrictToRequestBBOX': '1',
>         #'version': '2.0.0',
>         #'table': '',
>         #'sql': ''
>     }
>     if not service[-1] == '?':
>         service += '?'
>     uri = service + urllib.unquote(urllib.urlencode(params))
>     #print uri
>     layername = typename
>     vlayer = QgsVectorLayer(uri, layername, "WFS")
>     return vlayer
>
>
> def addBestemmingsplan(plangebied):
>     service = 'http://afnemers.ruimtelijkeplannen.nl/afnemers2012/services'
>     filter = '"plangebied"=\'' + plangebied + '\''
>     #print(filter)
>     layers = [ \
>         'app:Bouwaanduiding', \
>         'app:Bouwvlak', \
>         'app:Enkelbestemming', \
>         'app:Bestemmingsplangebied', \
>     ]
>
>     root = QgsProject.instance().layerTreeRoot()
>     bpName = plangebied
>     bpGroup = root.insertGroup(0, bpName)
>     #print bpGroup
>
>     for layer in layers:
>         #time.sleep(1)
>         print layer
>         vlayer = getWfsLayer(service, layer, filter)
>         print vlayer
>         #vlayer.updateExtents()
>         if vlayer.isValid():
>             QgsMapLayerRegistry.instance().addMapLayer(vlayer, False)
>             #time.sleep(1)
>             node_vlayer = bpGroup.addLayer(vlayer)
>             #time.sleep(1)
>         else:
>             print 'invalid layer'
>
>     canvas = iface.mapCanvas()
>     canvas.refresh()
>
>
> addBestemmingsplan(plangebied)