On 2022-01-19 9:44 am, [email protected] wrote:
I have defined a property shape and am successfully inferring its
objects using a sh:values rule.
Can you remind me whether it is possible to use this property and its
inferred data in the sh:values rule for a different property shape? If
so, is there a special way that it needs to be done -- like, does the
data I inferred in the first property shape need to be materialized in
some way before I can make use of it? --
In general, the RDF graphs that TopBraid operates on do not
automatically "see" the extra inferred triples, so they are not computed
as RDF triples on the fly. However, our higher level query languages
GraphQL and JavaScript/ADS do see them whenever they are requested. The
user interface goes through GraphQL and will therefore display these
values as if they were materialized.
Now, within SHACL itself it depends on what you want to do. If you have
SHACL-AF inference rules including other sh:values rules you can safely
use path expressions
https://w3c.github.io/shacl/shacl-af/#node-expressions-path and the
values will be computed on the fly. For SHACL constraints there is no
such mechanism unless you are expressing the constraints in SPARQL.
There you can use the magic property
(?focusNode ?predicate) tosh:values ?result
to query the inferred values.
The other option, of course, is to materialize the inferences, e.g.
using the Inferences panel or the Transform tab.
Does this help?
Holger
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