def _merge_notes(user_key, notes_from_client, old_last_synchronized,
new_last_synchronized):
"""
Merge notes from client with notes from the server.
:param user_key: Key of the :class:`google.appengine.api.users.User`
with which the notes are associated.
:param notes_from_client: Iterable of Note-like objects.
:param datetime.datetime old_last_synchronized: Datetime after which to
fetch server notes.
:param datetime.datetime new_last_synchronized: Datetime of the current
merge operation.
:type user_key: :class:`google.appengine.ext.db.Key`
:return: Notes to be merged back into the client.
:rtype: list
"""
from_server_map = {o.key: o for o in Note.get_synchronized_after(
user_key, old_last_synchronized)}
to_persist = []
for client_note in notes_from_client:
server_note, is_created = Note.get_or_create(user_key,
client_note.id)
if is_created or client_note.modified >= server_note.modified:
server_note.update_from_note(client_note, new_last_synchronized)
to_persist.append(server_note)
# The ``client_note`` supersedes the ``server_note``, so don't
# return the ``server_note`` to the client.
from_server_map.pop(server_note.key, None)
if to_persist:
ndb.put_multi_async(to_persist)
return from_server_map.values()
def delete(self):
"""
Delete the current :class:`google.appengine.api.users.User`.
"""
user = self.get_user()
if user:
if is_connected(user):
disconnect_user(user)
user_key = user.key
Note.delete_all(user_key)
user_key.delete()
return self.render_json('')
def _copy_notes_between_users(from_user_key, to_user_key):
"""
Copy notes from one :class:`google.appengine.api.users.User` to
another.
:param from_user_key: Key of the :class:`google.appengine.api.users.User`
from which to copy the notes.
:param to_user_key: Key of the :class:`google.appengine.api.users.User`
to which to copy the notes.
:type from_user_key: :class:`google.appengine.ext.db.Key`
:type to_user_key: :class:`google.appengine.ext.db.Key`
"""
notes = [src.copy_to_user(to_user_key) for src in Note.get_active(from_user_key)]
if notes:
ndb.put_multi_async(notes)
