def get_connection(self):
"""Get a connection to this Database. Connections are retrieved from a
pool.
"""
if not self.open:
raise exc.ResourceClosedError('Database closed.')
return Connection(self._engine.connect())
def get_connection(self):
"""Get a connection to this Database. Connections are retrieved from a
pool. The retrieved connection remains open until its result is
consumed.
"""
if not self.open:
raise exc.ResourceClosedError("Database closed.")
return Connection(self.engine.connect())
def get_connection(self, close_with_result=False):
"""Get a connection to this Database. Connections are retrieved from a
pool. By default, the retrieved connection remains open. Setting
close_with_result to True returns the connection to the pool once a
result is consumed.
"""
if not self.open:
raise exc.ResourceClosedError('Database closed.')
return Connection(self._engine.contextual_connect(close_with_result))
def get_session(self):
"""Get a session to use for running queries.
:rtype: Session
"""
if not self.is_open:
raise exc.ResourceClosedError("Database is not open.")
return Session(self.connection)
def _revalidate_connection(self):
if self._Connection__can_reconnect and self._Connection__invalid:
if self._Connection__transaction is not None:
raise sqla_exc.InvalidRequestError(
"Can't reconnect until invalid "
"transaction is rolled back")
self._Connection__connection = self.engine.raw_connection(
_connection=self)
self._Connection__invalid = False
return self._Connection__connection
raise sqla_exc.ResourceClosedError("This Connection is closed")
def get_connection(self) -> Connection:
"""Gets a connection to the db. Connections are retrieved from a pool."""
if not self.open:
raise exc.ResourceClosedError("db closed")
return Connection(self._engine.connect())
def get_connection(self):
"""Get a connection from the sqlalchemy engine."""
if not self._open:
raise exc.ResourceClosedError('Database closed.')
return self._connection_class(self._engine.connect())
def get_connection(self):
if not self.open:
raise exc.ResourceClosedError("Database Closed")
return Connection(self._engine.connect())
