Hi,
While trying to familiarize myself with sh:values in EDG, I fail to get the
results I think I expect using sh:prefixes. I've read the spec and Holger's
mail dd March 22 2021 on this topic in this forum.
In TopBraid Examples Geo Ontology, I added a values property shape to
g:GeoConcept that counts the number of narrowers, see [1]. It works as expected.
But I had to use sh:prefixes as in [2], with the urn-URI. When using the
"external graph URI" as the graphURI as in [3], the prefix declaration is not
found, even though I did set this parameter on the settings tab, as seen under
[4].
The external graphURI is to be used as value of owl:imports*, so I would expect
[3] to work, or is this by design? -j
[1]
[cid:image002.png@01D756CF.7875BD00]
[2]
g:GeoConcept-numberOfNarrowers
a sh:PropertyShape ;
sh:path g:numberOfNarrowers ;
sh:datatype xsd:integer ;
sh:maxCount 1 ;
sh:name "number of narrowers" ;
sh:values [
sh:prefixes <urn:x-evn-master:geography_ontology> ;
sh:select """
SELECT COUNT(?n)
WHERE {
?n skos:broader ?this .
}
""" ;
] ;
.
[3]
sh:prefixes <http://topquadrant.com/ns/examples/geography#> ;
or
sh:prefixes g: ;
[4]
<urn:x-evn-master:geography_ontology>
a owl:Ontology ;
metadata:status metadata:UnderDevelopmentStatus ;
swa:defaultNamespace http://topquadrant.com/ns/examples/geography# ;
teamwork:externalGraphURI g: ;
rdfs:comment "Schema definition for Geography Taxonomy." ;
rdfs:label "TopBraid Examples Geo Ontology" ;
owl:imports http://datashapes.org/dash ;
owl:imports http://datashapes.org/graphql ;
owl:imports http://spinrdf.org/spl ;
owl:imports http://topbraid.org/skos-xl.shapes ;
owl:imports http://topbraid.org/skos.shapes ;
owl:imports http://topbraid.org/tbgeo ;
owl:imports http://topbraid.org/teamworkconstraints ;
sh:declare [
sh:namespace http://topquadrant.com/ns/examples/geography#^^xsd:anyURI ;
sh:prefix "g" ;
] ;
sh:declare [
sh:namespace http://www.w3.org/2004/02/skos/core#^^xsd:anyURI ;
sh:prefix "skos" ;
] ;
sh:declare [
sh:namespace http://www.wikidata.org/prop/direct/^^xsd:anyURI ;
sh:prefix "wdt" ;
] ;
.
Jan Voskuil | CEO Taxonic
Veldzigt 2, 3454 PW, De Meern, The Netherlands
T +31 (0)88 829 66 00 | M:+31 (0)6 14488335
jan.vosk...@taxonic.com<mailto:jan.vosk...@taxonic.com> |
www.taxonic.com<http://www.taxonic.com/>
Registered office in Den Haag, The Netherlands
Registration Number Chamber of Commerce: 54529190
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