metapie/peer.py

   1 ############################################################################
   2 #   Copyright (C) 2005 by Reithinger GmbH
   3 #   mreithinger@web.de
   4 #
   5 #   This file is part of metapie.
   6 #
   7 #   metapie is free software; you can redistribute it and/or modify
   8 #   it under the terms of the GNU General Public License as published by
   9 #   the Free Software Foundation; either version 2 of the License, or
  10 #   (at your option) any later version.
  11 #
  12 #   pyplan is distributed in the hope that it will be useful,
  13 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 #   GNU General Public License for more details.
  16 #
  17 #   You should have received a copy of the GNU General Public License
  18 #   along with this program; if not, write to the
  19 #   Free Software Foundation, Inc.,
  20 #   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 ############################################################################
  22
  23
  24 class Peer(object):
  25     def _remove_from_peer(self, peer, parent_imodel):
  26         if not self._name_to_me:
  27             return
  28
  29         peer_end = getattr(peer, self._name_to_me)
  30         try:
  31             del peer_end[parent_imodel]
  32         except KeyError:
  33             pass
  34         except TypeError:
  35             setattr(peer, self._name_to_me, None)
  36
  37
  38     def _add_to_peer(self, peer, parent_imodel):
  39         if not peer or not self._name_to_me:
  40             return
  41
  42         peer_end = getattr(peer, self._name_to_me)
  43         try:
  44             peer_end.insert(parent_imodel)
  45         except AttributeError:
  46             setattr(peer, self._name_to_me, parent_imodel)
  47