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International-Data-Spaces-Association / InformationModel

The Information Model of the International Data Spaces implements the IDS reference architecture as an extensible, machine readable and technology independent data model.
Apache License 2.0
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Application Profile for DCAT (DCAT-AP) Following European Best Practices #391

Closed JohannesLipp closed 3 years ago

JohannesLipp commented 3 years ago

As described in #277 , we would strongly benefit from an alignment with a widely-used DCAT-AP such as the DCAT Application Profile for data portals in Europe.

This pull requests adds adopted SHACL shapes for validation. Its content (=validation constraints) should be discussed and evaluated for strict usage in the IDS.

JohannesLipp commented 3 years ago

With my previous comment I actually meant to approve. Here is, however, one request for discussion: having these shapes is nice, but there should also a way to (optionally?) instruct the Java library to enforce them, whenever it's used in a setting where DCAT-AP conformance is required.

@maboeckmann Could you briefly comment if the Java library enforces compatibility with existing SHACL shapes? If so, then @clange you could create a new issue for this. Thank you.

maboeckmann commented 3 years ago

Yes, the code itself already includes some requirements, e.g. whether fields are mandatory or can occur multiple times. On top of that, we created a full-fledged SHACL validator, which is however not included in the Java model classes and is therefore optional.