def skipTriples(self, skip, graph):
if not len(skip):
return
if skip.endswith("/"):
skip = skip[:len(skip) - 1]
print("skip %s" % skip)
delcore = """PREFIX schema: <http://schema.org/>
DELETE {?term ?p ?o}
WHERE {
?term ?p ?o.
?term a ?t.
FILTER NOT EXISTS {?term schema:isPartOf ?x}.
}"""
delext = """PREFIX schema: <http://schema.org/>
DELETE {?s ?p ?o}
WHERE {
?s a ?t;
schema:isPartOf <%s>.
?s ?p ?o.
}""" % skip
if skip == "http://schema.org":
q = delcore
else:
q = delext
before = len(graph)
processUpdate(graph, q)
def skipTriples(self,skip, graph):
if not len(skip):
return
if skip.endswith("/"):
skip = skip[:len(skip) -1]
print("skip %s" % skip)
delcore="""PREFIX schema: <http://schema.org/>
DELETE {?term ?p ?o}
WHERE {
?term ?p ?o.
?term a ?t.
FILTER NOT EXISTS {?term schema:isPartOf ?x}.
}"""
delext ="""PREFIX schema: <http://schema.org/>
DELETE {?s ?p ?o}
WHERE {
?s a ?t;
schema:isPartOf <%s>.
?s ?p ?o.
}""" % skip
if skip == "http://schema.org":
q = delcore
else:
q = delext
before = len(graph)
processUpdate(graph,q)
def skipOddTriples(self, graph):
delf = """
DELETE {?s ?p ?o}
WHERE {
?s ?p ?o.
FILTER (! strstarts(str(?s), "http://schema.org")).
}"""
processUpdate(graph, delf)
def skipOddTriples(self, graph):
delf = """
DELETE {?s ?p ?o}
WHERE {
?s ?p ?o.
FILTER (! strstarts(str(?s), "http://schema.org")).
}"""
processUpdate(graph,delf)
def doQueryUpdate(self, query_name, initBinds={}):
"""
Given a sparql 1.1 update query, perform it.
"""
query = self.queries[query_name]
try:
result = processUpdate(self.graph,
self.prefixes + query,
initBindings=initBinds,
initNs=self.namespace)
#result = parseUpdate(self.graph, self.prefixes + query, initBindings=initBinds, initNs=self.namespace)
#self.graph.query(self.prefixes + query, initBindings=initBinds, initNs=self.namespace)
except Exception as e:
print("\nSparql query [%s] parsing problem: %s \n" %
(query_name, str(e)))
return None
return result
"""
Process SPARQL Update
"""
import rdflib
from rdflib.plugins.sparql import processUpdate
g = rdflib.Graph()
g.load("foaf.rdf")
processUpdate(g, '''
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
PREFIX dbpedia: <http://dbpedia.org/resource/>
INSERT
{ ?s a dbpedia:Human . }
WHERE
{ ?s a foaf:Person . }
''')
for x in g.subjects(
rdflib.RDF.type, rdflib.URIRef('http://dbpedia.org/resource/Human')):
print x
