"type" of an APEx algorithm OGC record

[soxofaan]

from ESA-EarthCODE/EarthCODE#5

There is a conflict between the current constraint/convention to use "apex_algorithm" as properties.type in algorithm_catalog OGC records and EarthCODE expectations

e.g.:

apex_algorithms/algorithm_catalog/max_ndvi_composite.json

Lines 1 to 11 in 7c32e3d

	{
	"id": "max_ndvi_composite",
	"type": "Feature",
	"conformsTo": [
	"http://www.opengis.net/spec/ogcapi-records-1/1.0/req/record-core"
	],
	"geometry": null,
	"properties": {
	"created": "2024-09-06T00:00:00Z",
	"updated": "2024-09-06T00:00:00Z",
	"type": "apex_algorithm",

this is currently enforced in CI as well by

apex_algorithms/qa/unittests/tests/test_algorithm_catalog.py

Line 26 in 7c32e3d

assert data["properties"]["type"] == "apex_algorithm"

However, as discussed in ESA-EarthCODE/EarthCODE#5 , the EarthCODE tooling/schemas expect an enum ['dataset', 'service', 'process', 'workflow'] instead of "apex_algorithm"

Should we align here with EarthCODE? Note that it's currently not very clear why the enum constraint is in place there in the first place -> EOEPCA/metadata-profile#1

And should we use a different field (or approach) than properties.type to indicate that this is an APEx algorithm OGC record

[jdries]

Alignment is always better, if for sure does not have to remain 'apex_algorithm'.
So the real question is if these things indeed have the same 'type', so apex algorithms can be fully described as earth code process or workflow?

And related: how to detect the subtype? Like the standard used to define the workflow or process?

[soxofaan]

I guess we should go for something like

"type": "workflow", 
"subtype": "apex_algorithm", 

to at least align with https://github.com/EOEPCA/metadata-profile.

But we probably also want to work with different APEx algorithm subtypes (UDP, ...), which might get messy that way.
Maybe we could also go for something like

"type": "workflow", 
"apex-type": "openeo-process", 

(which avoids the risk on collision with other/future schemas)