sqlalchemy.engine.base.RootTransaction

class documentation

class RootTransaction(Transaction): (source)

Known subclasses: sqlalchemy.engine.base.TwoPhaseTransaction

Represent the "root" transaction on a :class:`_engine.Connection`. This corresponds to the current "BEGIN/COMMIT/ROLLBACK" that's occurring for the :class:`_engine.Connection`. The :class:`_engine.RootTransaction` is created by calling upon the :meth:`_engine.Connection.begin` method, and remains associated with the :class:`_engine.Connection` throughout its active span. The current :class:`_engine.RootTransaction` in use is accessible via the :attr:`_engine.Connection.get_transaction` method of :class:`_engine.Connection`. In :term:`2.0 style` use, the :class:`_engine.Connection` also employs "autobegin" behavior that will create a new :class:`_engine.RootTransaction` whenever a connection in a non-transactional state is used to emit commands on the DBAPI connection. The scope of the :class:`_engine.RootTransaction` in 2.0 style use can be controlled using the :meth:`_engine.Connection.commit` and :meth:`_engine.Connection.rollback` methods.

Method	`__init__`	Undocumented
Class Variable	`__slots__`	Undocumented
Instance Variable	`connection`	Undocumented
Instance Variable	`is_active`	Undocumented
Method	`_close_impl`	Undocumented
Method	`_connection_begin_impl`	Undocumented
Method	`_connection_commit_impl`	Undocumented
Method	`_connection_rollback_impl`	Undocumented
Method	`_deactivate_from_connection`	Undocumented
Method	`_do_close`	Undocumented
Method	`_do_commit`	Undocumented
Method	`_do_rollback`	Undocumented
Class Variable	`_is_root`	Undocumented
Property	`_deactivated_from_connection`	True if this transaction is totally deactivated from the connection and therefore can no longer affect its state.

Inherited from Transaction:

Method	`close`	Close this :class:`.Transaction`.
Method	`commit`	Commit this :class:`.Transaction`.
Method	`rollback`	Roll back this :class:`.Transaction`.
Property	`is_valid`	Undocumented
Method	`_get_subject`	Undocumented
Method	`_rollback_can_be_called`	indicates the object is in a state that is known to be acceptable for rollback() to be called.
Method	`_transaction_is_active`	Undocumented
Method	`_transaction_is_closed`	Undocumented

Inherited from TransactionalContext (via Transaction):

Method	`__enter__`	Undocumented
Method	`__exit__`	Undocumented
Class Method	`_trans_ctx_check`	Undocumented
Instance Variable	`_outer_trans_ctx`	Undocumented
Instance Variable	`_trans_subject`	Undocumented