SHACL

The Service extension provides a SHACL document for validating data conforming to the srv:Service data model.

The SHACL shapes are auto-generated from the OWL ontology (srv.ttl) using the SKG-IF SHACL extractor and are available at:

https://w3id.org/skg-if/extension/srv/validation/shacl/

Generation

The extractor reads structured cardinality annotations embedded in the dc:description of each class block in srv.ttl. Each annotation follows the micro-syntax:

* property -[min..max]-> RangeClass

For example:

* srv:invocationType -[0..N]-> skos:Concept
* foaf:name -[1..1]-> rdfs:Literal

From these annotations the extractor generates sh:PropertyShape nodes with sh:minCount, sh:maxCount, and appropriate sh:nodeKind or sh:datatype constraints. The result is written to data-model/shacl/current/shacl.ttl and can be regenerated directly with:

cd ../shacl-extractor
python -m src.main \
    ../ext-srv/data-model/ontology/current/srv.ttl \
    ../ext-srv/data-model/shacl/current/shacl.ttl \
    --shapes-base https://w3id.org/skg-if/shapes/srv/

(or by running dev-check.sh)

The SHACL file should not be edited manually — any changes to the shapes must be made in the ontology (srv.ttl) and regenerated.