notmuch/cnotmuch/notmuch.py

42 lines
1.7 KiB
Python

"""The :mod:`notmuch` module provides most of the functionality that a user is likely to need.
.. note:: The underlying notmuch library is build on a hierarchical
memory allocator called talloc. All objects derive from a
top-level :class:`Database` object.
This means that as soon as an object is deleted, all underlying
derived objects such as Queries, Messages, Message, and Tags will
be freed by the underlying library as well. Accessing these
objects will then lead to segfaults and other unexpected behavior.
We implement reference counting, so that parent objects can be
automatically freed when they are not needed anymore. For
example::
db = Database('path',create=True)
msgs = Query(db,'from:myself').search_messages()
This returns a :class:`Messages` which internally contains a
reference to its parent :class:`Query` object. Otherwise the
Query() would be immediately freed, taking our *msgs* down with
it.
In this case, the above Query() object will be automatically freed
whenever we delete all derived objects, ie in our case:
`del(msgs)` would also delete the parent Query. It would not
delete the parent Database() though, as that is still referenced
from the variable *db* in which it is stored.
Pretty much the same is valid for all other objects in the
hierarchy, such as :class:`Query`, :class:`Messages`,
:class:`Message`, and :class:`Tags`.
"""
from database import Database, Query
from message import Messages
from thread import Threads
from tag import Tags
from cnotmuch.globals import nmlib, STATUS, NotmuchError
__LICENSE__="GPL v3+"
__VERSION__='0.2.0'
__AUTHOR__ ='Sebastian Spaeth <Sebastian@SSpaeth.de>'