sqlalchemy.engine.util.TransactionalContext

class documentation

class TransactionalContext(object):

Known subclasses: sqlalchemy.engine.base.Transaction, sqlalchemy.orm.session.SessionTransaction

Apply Python context manager behavior to transaction objects.

Performs validation to ensure the subject of the transaction is not used if the transaction were ended prematurely.

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

@classmethod
def _trans_ctx_check(cls, subject):

Undocumented

def __enter__(self):

Undocumented

def __exit__(self, type_, value, traceback):

Undocumented

def _get_subject(self):

overridden in sqlalchemy.engine.base.Transaction, sqlalchemy.orm.session.SessionTransaction

Undocumented

def _rollback_can_be_called(self):

overridden in sqlalchemy.engine.base.Transaction, sqlalchemy.orm.session.SessionTransaction

indicates the object is in a state that is known to be acceptable for rollback() to be called.

This does not necessarily mean rollback() will succeed or not raise an error, just that there is currently no state detected that indicates rollback() would fail or emit warnings.

It also does not mean that there's a transaction in progress, as it is usually safe to call rollback() even if no transaction is present.

New in version 1.4.28.

def _transaction_is_active(self):

overridden in sqlalchemy.engine.base.Transaction, sqlalchemy.orm.session.SessionTransaction

Undocumented

def _transaction_is_closed(self):

overridden in sqlalchemy.engine.base.Transaction, sqlalchemy.orm.session.SessionTransaction

Undocumented

_outer_trans_ctx =

Undocumented

_trans_subject =

Undocumented