Re: help implementing OGR Postgres foreign data wrapper

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От	Ben Madin
Тема	Re: help implementing OGR Postgres foreign data wrapper
Дата	5 октября 2021 г. 10:57:34
Msg-id	CA+weYr3wES7dQg09gZ0f4t30Xo+9ULO3ogA92-beTF-O8eQ29A@mail.gmail.com обсуждение исходный текст
Ответ на	help implementing OGR Postgres foreign data wrapper (Brent Wood <Brent.Wood@niwa.co.nz>)
Ответы	Re: help implementing OGR Postgres foreign data wrapper (Brent Wood <Brent.Wood@niwa.co.nz>)
Список	pgsql-general

Дерево обсуждения

Hi Brent,

not sure why, but it is working for me using ogrinfo:

~ $ ogrinfo https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer\?SERVICE\=WFS\&REQUEST\=GetCapabilities
INFO: Open of `https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer?SERVICE=WFS&REQUEST=GetCapabilities'
using driver `WFS' successful.
Metadata:
ABSTRACT=To develop a marine environment classification for waters in depths shallower than 3000 m within the outer boundary of the NZ 200 naut. mile EEZ (an OGC WFS Layer).
TITLE=WFS
1: BOMEC_15_Class_WFS:BOMEC_15_Class (title: BOMEC_15_Class) (Multi Surface)

not very helpful, but a 400 error might be some kind of encoding problem with request?

cheers

Ben

On Tue, 5 Oct 2021 at 14:18, Brent Wood <Brent.Wood@niwa.co.nz> wrote:

Hi,

Apologies, this not strictly a Postgres question, but Postgres is so fundamental to what I'm trying to do and this list is generally so helpful, so here I go...

I'm using FDW's to create virtual tables providing access to data from external data sources. This is working well for data in other Postgres databases using the Postgres FDW.

I also want to be able to link to data from WFS services via the OGR FDW (https://www.pgxn.org/dist/ogr_fdw/)
The first service I'm trying to connect to is:
https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer

I can retrieve the capabilities doc in a browser (test 1 passed!) and plot the data as a layer in QGIS (test 2 passed). My next step is to test OGR access via ogrinfo. This I can't seem to get working. I'm assuming I need to sort this out before trying to get the OGR_FDW working.

I've tried:
ogrinfo https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer
ogrinfo https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer?SERVICE=WFS&REQUEST=GetCapabilities

I can only get the following response
ogrinfo https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer?SERVICE=WFS&REQUEST=GetCapabilities
[1] 3121502
ERROR 1: HTTP error code : 400
ERROR 1: HTTP error code : 400
FAILURE:
Unable to open datasource `https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer?SERVICE=WFS' with the following drivers.
-> ESRIC
...
-> OGR_PDS
-> WFS
-> OAPIF
...

Can anyone suggest what might be the problem?

Thanks.

Brent Wood

Principal Technician, Fisheries
NIWA
DDI: +64 (4) 3860529

Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
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