WFS3 - OGC WFS 3.0 service (experimental)

(GDAL/OGR >= 2.3.0)

NOTE: THIS IS BASED ON A DRAFT VERSION OF THE WFS 3.0 SPECIFICATION

This driver can connect to a OGC WFS 3.0 service. It assumes that the service supports OpenAPI 3.0/JSON/GeoJSON encoding for respectively API description, feature collection metadata and feature collection data.

Dataset name syntax

The syntax to open a WFS datasource is : WFS3:http://path/to/WFS/endpoint

Layer schema

OGR needs a fixed schema per layer, but WFS 3.0 Core doesn't impose fixed schema. So the driver will retrieve the first page of features (10 features) and establish a schema from this.

Filtering

The driver will forward any spatial filter set with SetSpatialFilter() to the server. In WFS 3.0 Core, only a subset of attributes allowed by the server can be queried for equalities, potentially combined with a AND logical operator. More complex requests will be partly or completely evaluated on client-side.

Rectangular spatial filtering is forward to the server as well.

Open options

The following options are available:

Examples

  • Listing the types of a WFS server : 
    $ ogrinfo WFS3:https://www.ldproxy.nrw.de/rest/services/kataster

INFO: Open of `WFS3:http://wfs3hackathon.ldproxy.net/rest/services/de_gn'
      using driver `WFS3' successful.
1: flurstueck (Multi Polygon)
2: gebaeudebauwerk (Multi Polygon)
3: verwaltungseinheit (Multi Polygon)
e

  • Listing the summary information of a WFS layer : 
    $ ogrinfo -al -so WFS3:https://www.ldproxy.nrw.de/rest/services/kataster flurstueck

Layer name: flurstueck
Metadata:
  TITLE=Flurstück
Geometry: Multi Polygon
Feature Count: 9308456
Extent: (5.612726, 50.237351) - (9.589634, 52.528630)
Layer SRS WKT:
GEOGCS["WGS 84",
    DATUM["WGS_1984",
        SPHEROID["WGS 84",6378137,298.257223563,
            AUTHORITY["EPSG","7030"]],
        AUTHORITY["EPSG","6326"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4326"]]
id: String (0.0)
aktualit: Date (0.0)
flaeche: Real (0.0)
flstkennz: String (0.0)
land: String (0.0)
gemarkung: String (0.0)
flur: String (0.0)
flurstnr: String (0.0)
gmdschl: String (0.0)
regbezirk: String (0.0)
kreis: String (0.0)
gemeinde: String (0.0)
lagebeztxt: String (0.0)
tntxt: String (0.0)

  • Filtering on a property 
    
$ ogrinfo WFS3:https://www.ldproxy.nrw.de/rest/services/kataster flurstueck -al -q -where "gemarkung = 'Wünnenberg'"
Layer name: flurstueck
Metadata:
  TITLE=Flurstück
OGRFeature(flurstueck):1
  id (String) = DENW19AL0000geMFFL
  aktualit (Date) = 2017/04/26
  flaeche (Real) = 1739
  flstkennz (String) = 05297001600193______
  land (String) = Nordrhein-Westfalen
  gemarkung (String) = Wünnenberg
  flur (String) = 016
  flurstnr (String) = 193
  gmdschl (String) = 05774040
  regbezirk (String) = Detmold
  kreis (String) = Paderborn
  gemeinde (String) = Bad Wünnenberg
  lagebeztxt (String) = Bleiwäscher Straße
  tntxt (String) = Platz / Parkplatz;1739
  MULTIPOLYGON (((8.71191 51.491084,8.7123 51.491067,8.712385 51.491645,8.712014 51.491666,8.711993 51.491603,8.71196 51.491396,8.711953 51.491352,8.71191 51.491084)))

[...]

  • Spatial filtering 
    $ ogrinfo WFS3:https://www.ldproxy.nrw.de/rest/services/kataster flurstueck -al -q -spat 8.7 51.4 8.8 51.5

Layer name: flurstueck
Metadata:
  TITLE=Flurstück
OGRFeature(flurstueck):1
  id (String) = DENW19AL0000ht7LFL
  aktualit (Date) = 2013/02/19
  flaeche (Real) = 18
  flstkennz (String) = 05292602900206______
  land (String) = Nordrhein-Westfalen
  gemarkung (String) = Fürstenberg
  flur (String) = 029
  flurstnr (String) = 206
  gmdschl (String) = 05774040
  regbezirk (String) = Detmold
  kreis (String) = Paderborn
  gemeinde (String) = Bad Wünnenberg
  lagebeztxt (String) = Karpke
  tntxt (String) = Fließgewässer / Bach;18
  MULTIPOLYGON (((8.768521 51.494915,8.768535 51.494882,8.768569 51.494908,8.768563 51.494925,8.768521 51.494915)))
[...]

    See Also