def verify_presto_column(self, column, expected_results):
inspector = mock.Mock()
inspector.engine.dialect.identifier_preparer.quote_identifier = mock.Mock()
keymap = {
"Column": (None, None, 0),
"Type": (None, None, 1),
"Null": (None, None, 2),
}
row = RowProxy(mock.Mock(), column, [None, None, None, None], keymap)
inspector.bind.execute = mock.Mock(return_value=[row])
results = PrestoEngineSpec.get_columns(inspector, "", "")
self.assertEqual(len(expected_results), len(results))
for expected_result, result in zip(expected_results, results):
self.assertEqual(expected_result[0], result["name"])
self.assertEqual(expected_result[1], str(result["type"]))
def _rowproxy_fixture(self, keys, processors, row):
class MockMeta(object):
def __init__(self):
pass
metadata = MockMeta()
keymap = {}
for index, (keyobjs, processor, values) in \
enumerate(list(zip(keys, processors, row))):
for key in keyobjs:
keymap[key] = (processor, key, index)
keymap[index] = (processor, key, index)
return RowProxy(metadata, row, processors, keymap)
async def fetch_all(self,
query: ClauseElement) -> typing.List[typing.Mapping]:
assert self._connection is not None, "Connection is not acquired"
query, args, context = self._compile(query)
cursor = await self._connection.cursor()
try:
await cursor.execute(query, args)
rows = await cursor.fetchall()
metadata = ResultMetaData(context, cursor.description)
return [
RowProxy(metadata, row, metadata._processors, metadata._keymap)
for row in rows
]
finally:
await cursor.close()
async def fetch_all(self, query: Union[ClauseElement,
str]) -> List[RowProxy]:
assert self._connection is not None, "Connection is not acquired"
query, args, context = self._compile(query)
async with self._connection.cursor() as cursor:
if args:
await cursor.execute(query, *args)
else:
await cursor.execute(query)
rows = await cursor.fetchall()
metadata: ResultMetaData = ResultMetaData(context,
cursor.description)
return [
RowProxy(metadata, row, metadata._processors, metadata._keymap)
for row in rows
]
