add support for OGC API Records to metasearch

[pvgenuchten]

!!early implementation!!

Description

This adds support for OGC API Records to metasearch. You can now either enter a CSW or a OGC API Records url in the service configuration. Try for example https://demo.pygeoapi.io/master.

Then search for records. Notice that when you select a record, a box is displayed in the map.

Currently the link relations (to wms, wfs) have not been implemented, due to limitation in the pygeoapi demo server.

Double click a record for more details

This requires owslib v0.20 (which is not in 3.16)
I've introduced shapely, it seems available by default in qgis
fixes #41566

[nyalldawson]

I've introduced shapely, it seems available by default in qgis

Can you remove this and use the native PyQgis API instead please? Shapely isn't a hard dependancy of qgis and there's nothing it offers which isn't available already through the qgis geometry classes

[pvgenuchten]

hi @nyalldawson, i've looked for geojson to wkt but couldn't find it, other way around is available geom.toJson

[nyalldawson]

looked for geojson to wkt

QgsJsonUtils offers json to geometry conversion 👍

[pvgenuchten]

QgsJsonUtils seems to work on full geojson featurecollection only, seems no utility to convert a single geometry
in stead used:

cs = record['geometry']['coordinates'][0]
g2 = QgsRectangle(cs[0][0], cs[0][1], cs[3][0], cs[3][1]).asWktPolygon()

(so shapely removed, thanx for mentioning)

[pvgenuchten]

This work was a good learning experience, but duplicates work by @tomkralidis at https://github.com/tomkralidis/QGIS/tree/metasearch-oarec, i'm keeping it here as inspiration, but in draft status

[nyalldawson]

i'm keeping it here as inspiration, but in draft status

In that case can we close please? We have an issue with QGIS and this PR queue growing to unmanagable lengths, and the only way we've found to keep it maintainable is to close all PRs which aren't actually waiting for a merge...