Week 08 Report

Weekly Report - Week 8 (July 18 - July 24, 2026)

I performed the following tasks during week 8:

DCAT-AP 3.0 mapping -> migration finished

Finished migrating and reconciling the DCAT-AP 3.0 field mapping document into docs/STA-DCAT-AP-Transformation-Layer-Reference.md, carried over from week 7. Cross-checked every mapping decision (Datastream to dcat:Dataset, Thing to dcat:DatasetSeries, STA root to dual-typed dcat:Catalog/dcat:DataService) against the network-as-subcatalog architecture finished in week 6, confirming the mapping holds cleanly with a Network -> dcat:Catalog sub-catalog added on top.

STAC compliance fixes

Added license and conformance fields to the STAC transformer output for full STAC 1.0 compliance.
Removed hardcoded configuration values from the connector package, sourcing them from config.py instead.

dcat_transformer.py -> implementation started

Began implementing the DCAT-AP 3.0 transformer based on the finalized mapping. Coded the same pivot rules as the STAC side: Datastream -> dcat:Dataset, Thing -> dcat:DatasetSeries, STA root -> dual-typed dcat:Catalog + dcat:DataService, Network -> dcat:Catalog sub-catalog.
Got build_dcat_catalog() working for the single-scope (NETWORK=0) case, returning one rdflib.Graph per scope rather than a merged quad store, so each scope can serialize and cache independently later.
dcat:Dataset nodes carrying the core fields (spatial, temporal, theme/subject) are in place; license/access rights, contact point, and the network-scoped variant (build_dcat_catalog_with_networks()) are still open.

Details can be found in:

Mapping doc: docs/STA-DCAT-AP-Transformation-Layer-Reference.md
STAC fixes and transformer work: api/app/v1/connector/config.py, stac_transformer.py, dcat_transformer.py

What do I plan to do next week?

Extend dcat_transformer.py to the network-scoped case (build_dcat_catalog_with_networks()) and finish out DatasetSeries extent computation and the per-Dataset dcat:Distributions.
Start on license/language URI resolution (resolve_license_uri() / resolve_language_uri()) and the master-switch env-flag system.

Am I blocked on anything?