def get_artists_and_collaborators_of_song_by_uri(self, uri):
rows_artists = self._graph.query(Queries.find_artists_uri_compiled(uri))
rows_compilers = self._graph.query(Queries.find_compiler_uri_compiled(uri))
artist_uris = self._get_single_rows_multiple_result(rows_artists)
if artist_uris is not None:
for artist_uri in artist_uris:
yield self.get_artist_by_uri(artist_uri)
compilers_tuples = self._get_double_rows_multiple_result(rows_compilers)
if compilers_tuples is not None:
for compiler_tuple in compilers_tuples:
yield self.get_artist_by_uri(compiler_tuple[0])
def test_query_artist_of_song(self):
dataset = Dataset("A fancy dataset")
generator = get_clean_graph_generator_mongo_repos()
mera_graph = generator.generate_mera_graph(artist_parser=FakeArtistParser(dataset),
song_parser=FakeSongParser(dataset))
rdflib_graph = mera_graph._graph
rows = rdflib_graph.query(Queries.find_artists_uri_compiled(base_entities_URI + "avaloncho"))
counter = 0
last_result = ""
for row in rows:
counter += 1
last_result = str(row[0])
self.assertEquals(counter, 1)
self.assertEquals(last_result, base_entities_URI + "herroes_del_selencio")
