KiokuDB::Backend::Role::TXN - Backend level transaction support.
version 0.57
package MyBackend; use Moose; with qw( KiokuDB::Backend KiokuDB::Backend::Role::TXN ); sub txn_begin { ... } sub txn_commit { ... } sub txn_rollback { ... }
This API is inspired by standard database transactions much like you get with DBI.
This is the low level interface required by "txn_do" in KiokuDB.
This method should evaluate the code reference in the context of a transaction, inside an eval
. If any errors are caught the transaction should be aborted, otherwise it should be committed. This is much like "txn_do" in DBIx::Class::Schema.
The rollback
callback should be fired when the transaction will be aborted.
Begin a new transaction.
This method can return a transaction handle that will later be passed to txn_commit
or txn_rollback
as necessary.
The current handle will be passed to nested calls to txn_begin
.
Commit the transaction.
Rollback the transaction.
Yuval Kogman <nothingmuch@woobling.org>
This software is copyright (c) 2014 by Yuval Kogman, Infinity Interactive.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.