I wanted to use the RDFLib for SPARQL 1.1 Queries which should be supported.
I have a file in JSON-LD and simple SELECT query works fine. But when I add a
FILTER REGEX, the result is zero size and also no error.
Here is my code (abstracted):
g = Graph()
g.parse("myontology.owl", format="json-ld")
result = g.query(
"""SELECT ?func
WHERE { ?func rdf:type mo:Function .
FILTER REGEX (?func, "off", "i").}""",
initNs={"mo": "http://mynamespace#"})
for row in result:
print("%s " % row)
What is wrong with the FILTER REGEX?
I didn't find a good documentation how to use SPARQL Algebra in RDFLib.
Thank you for help!
--
http://github.com/RDFLib
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