Sorry to keep using up bandwidth here. I have pored over all the documentation I can find on the proper use of sh:values with SPARQL, and clearly I'm not getting something. Here is my trivial toy example that is supposed to just infer a hard-coded value of "Hello" for a property. Can you see what I'm doing wrong? TBC keeps saying: Property ssh:Property_1: values=(SHACL node expression of unknown type: java.lang.IllegalArgumentException: Malformed SHACL node expression)
I'm also attaching the full file in case you want to just load it. ssh:Class_1 a owl:Class ; a sh:NodeShape ; rdfs:subClassOf owl:Thing ; sh:property [ sh:path ssh:Property_1 ; sh:values [ sh:sparql [ sh:prefixes <http://example.org/sparqlshape> ; sh:select """SELECT ?result WHERE { BIND (\"Hello\" AS ?result) . }""" ; ] ; ] ; ] ; . ssh:Instance_1 a ssh:Class_1 ; . ssh:Property_1 a rdf:Property ; . Steve On Tue, Nov 24, 2020 at 2:57 PM Holger Knublauch <[email protected]> wrote: > > On 11/25/2020 8:48 AM, Steve Ray wrote: > > I agree with you. Is there no way to have "variable" predicates in native > SHACL? Or is my only option here to use the embedded SPARQL? > > Exactly. SHACL node expressions do not have a notion of variables. It is > intentionally limited to be easier, but then doesn't offer all features > that SPARQL does. There is nothing wrong with using SPARQL node expressions > as a fallback. > > Holger > > > > Steve > > > > > On Tue, Nov 24, 2020 at 12:51 PM Irene Polikoff <[email protected]> > wrote: > >> There is no path in your example that could get from ?this to ?prop. A >> path specifies predicates. You do not have predicates to specify - you are >> finding out your predicates in the first WHERE statement. This is why you >> need to have 2 statements in the WHERE clause and can’t boil them down to a >> path expression in a single statement. >> >> On Nov 24, 2020, at 12:39 PM, Steve Ray <[email protected]> wrote: >> >> I'm trying to get comfortable with using SHACL code and wean myself from >> embedded SPARQL. However, I'm having some trouble mapping certain common >> SPARQL patterns into the SHACL counterpart. Specifically, here's an >> example. I'm trying to find all the values of any property that is a >> subPropertyOf a parent property (c223:hasProperty). >> The SPARQL should (I think) be something like this: >> >> c223:PropertiesShape >> rdf:type sh:PropertyShape ; >> sh:path c223:hasProperty ; >> sh:name "PropertiesShape" ; >> sh:values [ >> sh:sparql [ >> sh:prefixes <http://www.w3.org/2000/01/rdf-schema> ; >> sh:select """SELECT DISTINCT ?prop >> WHERE { >> ?property rdfs:subPropertyOf* >> c223:hasProperty . >> $this ?property ?prop . >> }""" ; >> ] ; >> ] ; >> . >> >> I know the following is wrong, but not sure what sh: calls I should be >> using: >> >> c223:PropertiesShape >> rdf:type sh:PropertyShape ; >> sh:path c223:hasProperty ; >> sh:name "PropertiesShape" ; >> sh:values [ >> sh:distinct [ >> sh:nodes [ >> sh:path ( >> [ >> sh:zeroOrMorePath rdfs:subPropertyOf ; >> ] >> c223:hasProperty >> ) ; >> ] ; >> ] ; >> ] ; >> . >> >> This gives me a "malformed SHACL expression", so there are definitely >> problems. >> >> My real question is, how does one duplicate this pattern in SHACL?: >> >> WHERE { >> ?property rdfs:subPropertyOf* >> <parentProperty> . >> $this ?property ?result . >> } >> >> >> >> >> Steve >> >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "TopBraid Suite Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/topbraid-users/CAGUep87nmSVo5eziHPh6ExbPD1%3DD%3DWrfTNOwNtK0PBww21%3DpgA%40mail.gmail.com >> <https://groups.google.com/d/msgid/topbraid-users/CAGUep87nmSVo5eziHPh6ExbPD1%3DD%3DWrfTNOwNtK0PBww21%3DpgA%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "TopBraid Suite Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/topbraid-users/11EA64E3-07D1-4DAF-A609-21C84A739254%40topquadrant.com >> <https://groups.google.com/d/msgid/topbraid-users/11EA64E3-07D1-4DAF-A609-21C84A739254%40topquadrant.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "TopBraid Suite Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/topbraid-users/CAGUep87Hq%3DPv7rCT0f3aQPU%2BzYo27dA1eodYyGe9ZOoh4D9opA%40mail.gmail.com > <https://groups.google.com/d/msgid/topbraid-users/CAGUep87Hq%3DPv7rCT0f3aQPU%2BzYo27dA1eodYyGe9ZOoh4D9opA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "TopBraid Suite Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/topbraid-users/41fa8018-8314-3e9b-b854-7fbc1e70f87a%40topquadrant.com > <https://groups.google.com/d/msgid/topbraid-users/41fa8018-8314-3e9b-b854-7fbc1e70f87a%40topquadrant.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "TopBraid Suite Users" group. 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sparqlshape.shapes.ttl
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