def get_conjunctivegraph(quads):
cg = ConjunctiveGraph()
# for (c, s, p, o) in quads:
# cg.default_context = Graph(store=cg.store, identifier=c)
# cg.add((s, p, o))
cg.addN([(s, p, o, Graph(store=cg.store, identifier=c)) for (c, s, p, o) in quads])
return cg
def infer(graph: ConjunctiveGraph, rules: ConjunctiveGraph):
"""
returns new graph of inferred statements.
"""
log.info(
f'Begin inference of graph len={len(graph)} with rules len={len(rules)}:'
)
workingSet = ConjunctiveGraph()
workingSet.addN(graph.quads())
implied = ConjunctiveGraph()
delta = 1
while delta > 0:
delta = -len(implied)
for r in rules:
if r[1] == LOG['implies']:
containsSetup = all(st in workingSet for st in r[0])
if containsSetup:
log.info(f' Rule {r[0]} -> present={containsSetup}')
for st in r[0]:
log.info(
f' {st[0].n3()} {st[1].n3()} {st[2].n3()}')
log.info(f' ...implies {len(r[2])} statements')
if containsSetup:
for st in r[2]:
workingSet.add(st)
implied.add(st)
else:
log.info(f' {r}')
delta += len(implied)
log.info(f' this inference round added {delta} more implied stmts')
log.info(f'{len(implied)} stmts implied:')
for st in implied:
log.info(f' {st}')
return implied
# based on fuxi/tools/rdfpipe.py
target = Graph()
tokenSet = generateTokenSet(graph)
with _dontChangeRulesStore(rules):
network = ReteNetwork(rules, inferredTarget=target)
network.feedFactsToAdd(tokenSet)
return target
def testSerialize(self):
s1 = URIRef('store:1')
r1 = URIRef('resource:1')
r2 = URIRef('resource:2')
label = URIRef('predicate:label')
g1 = Graph(identifier = s1)
g1.add((r1, label, Literal("label 1", lang="en")))
g1.add((r1, label, Literal("label 2")))
s2 = URIRef('store:2')
g2 = Graph(identifier = s2)
g2.add((r2, label, Literal("label 3")))
g = ConjunctiveGraph()
for s,p,o in g1.triples((None, None, None)):
g.addN([(s,p,o,g1)])
for s,p,o in g2.triples((None, None, None)):
g.addN([(s,p,o,g2)])
r3 = URIRef('resource:3')
g.add((r3, label, Literal(4)))
r = g.serialize(format='trix')
g3 = ConjunctiveGraph()
from StringIO import StringIO
g3.parse(StringIO(r), format='trix')
for q in g3.quads((None,None,None)):
# TODO: Fix once getGraph/getContext is in conjunctive graph
if isinstance(q[3].identifier, URIRef):
tg=Graph(store=g.store, identifier=q[3].identifier)
else:
# BNode, this is a bit ugly
# we cannot match the bnode to the right graph automagically
# here I know there is only one anonymous graph,
# and that is the default one, but this is not always the case
tg=g.default_context
self.assertTrue(q[0:3] in tg)
def get_entity_sparql(entity):
try:
statements = self.db.query('''select distinct ?s ?p ?o ?g where {
hint:Query hint:optimizer "Runtime" .
?np np:hasAssertion?|np:hasProvenance?|np:hasPublicationInfo? ?g;
np:hasPublicationInfo ?pubinfo;
np:hasAssertion ?assertion;
{graph ?np { ?np sio:isAbout ?e.}}
UNION
{graph ?assertion { ?e ?p ?o.}}
graph ?g { ?s ?p ?o }
}''',initBindings={'e':entity}, initNs=self.NS.prefixes)
result = ConjunctiveGraph()
result.addN(statements)
except Exception as e:
print(str(e), entity)
raise e
#print result.serialize(format="trig")
return result.resource(entity)
def testSerialize(self):
s1 = URIRef('store:1')
r1 = URIRef('resource:1')
r2 = URIRef('resource:2')
label = URIRef('predicate:label')
g1 = Graph(identifier=s1)
g1.add((r1, label, Literal("label 1", lang="en")))
g1.add((r1, label, Literal("label 2")))
s2 = URIRef('store:2')
g2 = Graph(identifier=s2)
g2.add((r2, label, Literal("label 3")))
g = ConjunctiveGraph()
for s, p, o in g1.triples((None, None, None)):
g.addN([(s, p, o, g1)])
for s, p, o in g2.triples((None, None, None)):
g.addN([(s, p, o, g2)])
r3 = URIRef('resource:3')
g.add((r3, label, Literal(4)))
r = g.serialize(format='trix')
g3 = ConjunctiveGraph()
from StringIO import StringIO
g3.parse(StringIO(r), format='trix')
for q in g3.quads((None, None, None)):
# TODO: Fix once getGraph/getContext is in conjunctive graph
if isinstance(q[3].identifier, URIRef):
tg = Graph(store=g.store, identifier=q[3].identifier)
else:
# BNode, this is a bit ugly
# we cannot match the bnode to the right graph automagically
# here I know there is only one anonymous graph,
# and that is the default one, but this is not always the case
tg = g.default_context
self.assertTrue(q[0:3] in tg)
