o_id = c.fetchone()[0]
props[p][1].write(("{} {} 1" + "\n").format(s_id, o_id))
TSink = TensorSink()
g = NTriplesParser(TSink)
f = open("test.ttl", 'rb')
g.parse(f)
f.close()
conn.commit()
c.execute("SELECT count(*) FROM entities")
num_ents = c.fetchone()[0]
#close all writers and the database connection
for key, value in props.items():
value[1].close()
conn.close()
#create .mtx for all properties with proper head fields
for key, value in props.items():
id_p = str(value[0])
with open("matrices/" + id_p, "r") as f:
num_nonZeros = sum([1 for line in f]) - 3
with open("matrices/" + id_p, "r") as f, open("matrices/" + id_p + ".mtx", "w+") as g:
for line in f:
g.write(line.replace("num_ents num_ents num_nonZeros", "{} {} {}".format(num_ents, num_ents, num_nonZeros)))
os.remove("matrices/" + id_p)
