Storage
=======

Config's informations are, by default, volatiles. This means, all values and
settings changes will be lost.

The storage is the system Tiramisu uses to communicate with various DB.
You can specified a persistent storage.

.. image:: storage.png

.. automodule:: tiramisu.storage

.. automethod:: tiramisu.storage.set_storage

Dictionary
~~~~~~~~~~

.. automodule:: tiramisu.storage.dictionary

Dictionary settings:

.. automethod:: tiramisu.storage.dictionary.storage.Setting

Sqlite3
~~~~~~~

.. automodule:: tiramisu.storage.sqlite3

Sqlite3 settings:

.. automethod:: tiramisu.storage.sqlite3.storage.Setting

Example
~~~~~~~

>>> from tiramisu.option import StrOption, OptionDescription
>>> from tiramisu.config import Config
>>> from tiramisu.storage import set_storage
>>> set_storage('sqlite3', dir_database='/tmp/tiramisu')
>>> s = StrOption('str', '')
>>> o = OptionDescription('od', '', [s])
>>> c1 = Config(o, persistent=True, session_id='xxxx')
>>> c1.str
>>> c1.str = 'yes'
>>> c1.str
'yes'
>>> del(c1)
>>> c2 = Config(o, persistent=True, session_id='xxxx')
>>> c2.str
'yes'