Hi Michel,
this SPARQL engine is configured to only run on the asserted triples.
The usual mechanism to ask for instances of a given class is to use a
path expression:
?instance rdf:type/rdfs:subClassOf* $superClass
in your case
?Anomaly rdf:type/rdfs:subClassOf* anomaly:Anomaly
This computes the "inferences" on the fly.
HTH
Holger
On 2020-12-09 6:38 pm, 'Bohms, H.M. (Michel)' via TopBraid Suite Users
wrote:
I have a data file (anomalies-of-ijsselbridge.ttl)
With instances of subclasses of class Anomaly.
When I do:
*PREFIX*anomaly: <https://w3id.org/def/anomaly#>
*PREFIX*rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
*SELECT**
*WHERE*{
?Anomaly rdf:type anomaly:Anomaly .
?Anomaly anomaly:forPhysicalObject ?BridgePart .
?Anomaly anomaly:globalEffect ?GlobalEffect
}
Has no results since I first have to run the superclass inferences.
When I do that (or more generally run TopSpin) I do not get these
superclass instances.
Any idea what I could do wrong?
(query on subclass runs fine)
Thx a lot, Michel
Dr. ir. H.M. (Michel) Bohms
Scientist Specialist
Structural Reliability
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