To help my understanding of your use case: Do you want to
a) restrict a property to values that have an rdf:type from the
schema.org namespace? (That could probably be achieved via sh:class
schema:Thing)
b) restrict a property to classes from the schema.org namespace (i.e.
the values itself are classes)
Holger
On 21/09/2017 3:00, Gary Murphy wrote:
This is my first dip into SHACL constraints, and what I'm needing
might be easy to do, only I'm stuck at the last step...
My objective is to constrain swa:URIResourceEditor to only offer
auto-complete on an rdf:type with classes in the schema.org
<http://schema.org> namespace, which is exactly what the comment on
the URIResourceEditor says it can do:
The auto-complete can apply a model-driven filter to the
resources. If the subject has SHACL property constraints for the
given predicate, then it will filter out all nodes where one of
the shapes specified via sh:not is not fulfilled. Among others,
this makes it possible to filter out system namespaces (via
tosh:SystemNamespaceShape)
Since I want this to apply to all schema.org <http://schema.org>
subjects, I set out to add the sh:property constraint to schema:Thing
only rather than the tosh:SystemNamespaceShape it seemed more
appropriate to use the dash:StemConstraintComponent and this is where
it stopped: in the list of constraint shapes I find
dash:StemConstraintComponent-stem (which would be the value of the IRI
stem?) but no where to set the value of that stem.
Am I going in the right direction with this? Do I need to define my
own value shape somewhere that would define itself in terms of calling
dash:StemConstraintComponent with the -stem parameter?
Or should I define a new value shape, much like
tosh:SystemNamespaceShape and using sparql to just test that the
object starts-with the right namespace?
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