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"""
Issue 715 - path query chaining issue
Some incorrect matches were found when using oneOrMore ('+') and
zeroOrMore ('*') property paths and specifying neither the
subject or the object.
"""
from rdflib import URIRef, Graph
import unittest
from rdflib.namespace import RDF, RDFS, NamespaceManager, Namespace
class TestIssue733(unittest.TestCase):
def test_issue_733(self):
g = Graph()
example = Namespace('http://example.org/')
g.add((example.S, example.P, example.O1))
g.add((example.S, example.P, example.O2))
q = '''
prefix ex:<http://example.org/>
select ?st ?ot ?gt where {
{SELECT (count(*) as ?st) where {
?s ?p ?o .
FILTER (?s=ex:S)
}}
{SELECT (count(*) as ?ot) where {
?s ?p ?o .
FILTER (?o=ex:O1)
}}
{SELECT (count(*) as ?gt) where {
?s ?p ?o .
FILTER (?o!=ex:O1 && ?s!=ex:O2)
}}
}
'''
res = g.query(q)
assert len(res) == 1
results = [[lit.toPython() for lit in line] for line in res]
assert results[0][0]== 2
assert results[0][1] == 1
assert results[0][2] == 1
def test_issue_733_independant(self):
g = Graph()
example = Namespace('http://example.org/')
g.add((example.S, example.P, example.O1))
g.add((example.S, example.P, example.O2))
q = '''
prefix ex:<http://example.org/>
select ?st where {
{SELECT (count(*) as ?st) where {
?s ?p ?o .
FILTER (?s=ex:S)
}}
}
'''
res = g.query(q)
assert len(res) == 1
results = [[lit.toPython() for lit in line] for line in res]
assert results[0][0] == 2
q = '''
prefix ex:<http://example.org/>
select ?st where {
{SELECT (count(*) as ?st) where {
?s ?p ?o .
FILTER (?o=ex:O1)
}}
}
'''
res = g.query(q)
results = [[lit.toPython() for lit in line] for line in res]
assert results[0][0] == 1
if __name__ == "__main__":
unittest.main()
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