I have a qualified constraint question.
To define a meronomy (typical hasPart hierarchy) we now use in OWA/OWL:
:Vehicle
a owl:Class ;
rdfs:subClassOf [
a owl:Restriction ;
owl:minQualifiedCardinality "0"^^xsd:nonNegativeInteger ;
owl:onClass :Engine ;
owl:onProperty :hasPart ;
] .
We explicitly model this mincard=0 to indicate relevance (it is not an
obligatory part).
(because we cannot leave the restriction out).
Now my question how does this translate into cwa/shacl?
:VehicleShape
a sh:NodeShape ;
sh:targetClass :Vehicle ;
sh:property [
sh:path :hasPart ;
sh:qualifiedMinCount 0 ;
sh:qualifiedValueShape [
sh:class :Engine ;
] ;
sh:qualifiedMinCount 0 ;
.
Or can I delete the red now?
Similar (example not for decomposition):
sh:property [ sh:path
https://w3id.org/nen2660/def#hasInterior ;
sh:qualifiedValueShape [ sh:class
https://otl.waternet.nl/def/cff9206f-72ae-4eb8-a671-9c3dd73b62c0 ]
] .
Is it ok to leave minCard/maxCard out?
Personally I guess NOT since I always have to give the actual constraint where
the valueshape is 'just' the context when to be applied, right?
So I put in minCar = 0 again or is there in shape a smarter way to indicate
this "relevance"?
Thx a lot, Michel
Michel Böhms
Data Scientist
[cid:[email protected]]
Mobile +31 630381220
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