Hi there
I am trying to run a SPARQL query over all subclasses of a given class YYY by Query 1 below.
This would allow me to get YYY listed in the output rather than just getting the list of only YYY's suclasses, as achieved by Query 2 below.
Query 1 does not work though. ( See error at the bottom of this Email).
Is there a mistake in Query 1 or are there Owlready2 limitations on the filter used in Query 1 or both?
Thank you in advance for the advise.
KR, Jos Lehmann
Query 1
entities2 = list(default_world.sparql("""
PREFIX owl: <
http://www.w3.org/2002/07/owl#>
PREFIX rdf: <
http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <
http://www.w3.org/2000/01/rdf-schema#>
PREFIX rdfs: <
http://www.w3.org/2000/01/rdf-schema#>
PREFIX xxx: <
http://www.semanticweb.org/aga/ontologies/2017/9/untitled-ontology-9#>
SELECT DISTINCT ?subject ?supertype
WHERE {
{?subject rdfs:subClassOf ?supertype} .
FILTER (?supertype= xxx:YYY)
}
"""))
Query 2
entities2 = list(default_world.sparql("""
PREFIX owl: <
http://www.w3.org/2002/07/owl#>
PREFIX rdf: <
http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <
http://www.w3.org/2000/01/rdf-schema#>
PREFIX rdfs: <
http://www.w3.org/2000/01/rdf-schema#>
PREFIX xxx: <
http://www.semanticweb.org/aga/ontologies/2017/9/untitled-ontology-9#>
SELECT DISTINCT ?subject
WHERE {
{?subject rdfs:subClassOf xxx:YYY}
}
"""))
Error Query 1
---------------------------------------------------------------------------
OperationalError Traceback (most recent call last)
<ipython-input-105-6d8b0562ea78> in <module>
13 }
14
---> 15 """))
16
17 entities2
~/dss/code-envs/python/py3-IE-update-1/lib/python3.6/site-packages/owlready2/sparql/main.py in execute(self, params)
384 def execute(self, params = ()):
385
--> 386 for l in PreparedQuery.execute(self, params):
387 l2 = []
388 i = 0
~/dss/code-envs/python/py3-IE-update-1/lib/python3.6/site-packages/owlready2/sparql/main.py in execute(self, params)
379 sql_params = [self.world._to_rdf(param)[0] for param in params]
380 for i in self.parameter_datatypes: sql_params.append(self.world._to_rdf(params[i])[1])
--> 381 return self.world.graph.execute(self.sql, sql_params)
382
383 class PreparedSelectQuery(PreparedQuery):
OperationalError: near "WITH": syntax error
Locked
