def open(self, mode="rwb", new_file=None, using="default",
connection=None):
"""Opens the internal large object instance."""
if "b" not in mode:
raise ValueError("Large objects must be opened in binary mode.")
if connection is None:
connection = connections[using]
validate_in_transaction(connection)
self._lobject = connection.connection.lobject(
self.oid, mode, 0, new_file)
self.oid = self._lobject.oid
return self
def check_in_transaction(request):
validate_in_transaction(connection)
def call_in_database_thread(a, b):
orm.validate_in_transaction(connection)
return sentinel.called, a, b