gispulse-src-cadastre

French cadastre data source for GISPulse — parcels, communes and buildings via IGN Géoplateforme WFS (domain FONCIER, jurisdiction FR).

Provider

Field	Value
Upstream producer	IGN (Institut national de l'information géographique et forestière)
Redistributor	IGN Géoplateforme (public WFS, no API key required)
Dataset	Parcellaire Express (CADASTRALPARCELS.PARCELLAIRE_EXPRESS)
Licence	Licence Ouverte 2.0
Cadence	Annual millésime (dataset-wide)

Entries

id	Label	AccessProtocol	Endpoint	WFS typename	Payload	Jurisdiction
parcelles	Cadastral parcels	WFS	https://data.geopf.fr/wfs/ows	CADASTRALPARCELS.PARCELLAIRE_EXPRESS:parcelle	VECTOR	FR
communes	Cadastral communes	WFS	https://data.geopf.fr/wfs/ows	CADASTRALPARCELS.PARCELLAIRE_EXPRESS:commune	VECTOR	FR
batiments	Cadastral buildings	WFS	https://data.geopf.fr/wfs/ows	CADASTRALPARCELS.PARCELLAIRE_EXPRESS:batiment	VECTOR	FR

Schema highlights:

• parcelles: idu, commune, section, numero, contenance (int), geometry
• communes: idu, nom, code_insee, geometry
• batiments: idu, nature, geometry

Revision

revision(entry_id) issues a single HTTP HEAD against the Géoplateforme WFS GetCapabilities URL:

https://data.geopf.fr/wfs/ows?SERVICE=WFS&VERSION=2.0.0&REQUEST=GetCapabilities

The freshness token is derived from the ETag header (preferred) or the Last-Modified header. The Parcellaire Express millésime is dataset-wide, so all three entries share one probe. Returns None — meaning "freshness unknown" — when the endpoint is unreachable or exposes neither header; the source watcher skips it rather than emit a spurious change.

Usage

from gispulse.plugins.api import get_catalog_entry

entry = get_catalog_entry("cadastre", "parcelles")
# entry.access.protocol → AccessProtocol.WFS
# entry.access.endpoint → "https://data.geopf.fr/wfs/ows"
# entry.access.params   → {"typename": "CADASTRALPARCELS.PARCELLAIRE_EXPRESS:parcelle"}

The plugin registers automatically via the gispulse.data_sources entry-point when installed:

pip install gispulse-src-cadastre

References

• Upstream issue: #184 (pilot wave 1 — DeclarativeSource contract)
• Upstream issue: #198 (revision() freshness probe)
• EPIC: #175 (SOURCE → CAPABILITY → SINK unified plugins)
• Data portal: https://data.geopf.fr/