notmuch/cnotmuch/notmuch.py

"""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 (but not the parent
    Database() 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`.

"""
import ctypes
from ctypes import c_int, c_char_p
from database import Database,Tags,Query,Messages,Message,Tags
from cnotmuch.globals import nmlib,STATUS,NotmuchError
__LICENSE__="GPL v3+"
__VERSION__=0.1
__AUTHOR__ ="Sebastian Spaeth <Sebastian@SSpaeth.de>"