schemata/CIM14/IEC61970/Meas/DiscreteValue.py

   1 # Copyright (C) 2010 Richard Lincoln
   2 #
   3 # This library is free software; you can redistribute it and/or
   4 # modify it under the terms of the GNU Lesser General Public
   5 # License as published by the Free Software Foundation; either
   6 # version 2.1 of the License, or (at your option) any later version.
   7 #
   8 # This library is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11 # Lesser General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU Lesser General Public
  14 # License along with this library; if not, write to the Free Software
  15 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA, USA
  16
  17 from CIM14.IEC61970.Meas.MeasurementValue import MeasurementValue
  18
  19 class DiscreteValue(MeasurementValue):
  20     """DiscreteValue represents a discrete MeasurementValue.
  21     """
  22
  23     def __init__(self, value=0, Discrete=None, *args, **kw_args):
  24         """Initialises a new 'DiscreteValue' instance.
  25
  26         @param value: The value to supervise.
  27         @param Discrete: Measurement to which this value is connected.
  28         """
  29         #: The value to supervise.
  30         self.value = value
  31
  32         self._Discrete = None
  33         self.Discrete = Discrete
  34
  35         super(DiscreteValue, self).__init__(*args, **kw_args)
  36
  37     _attrs = ["value"]
  38     _attr_types = {"value": int}
  39     _defaults = {"value": 0}
  40     _enums = {}
  41     _refs = ["Discrete"]
  42     _many_refs = []
  43
  44     def getDiscrete(self):
  45         """Measurement to which this value is connected.
  46         """
  47         return self._Discrete
  48
  49     def setDiscrete(self, value):
  50         if self._Discrete is not None:
  51             filtered = [x for x in self.Discrete.DiscreteValues if x != self]
  52             self._Discrete._DiscreteValues = filtered
  53
  54         self._Discrete = value
  55         if self._Discrete is not None:
  56             self._Discrete._DiscreteValues.append(self)
  57
  58     Discrete = property(getDiscrete, setDiscrete)
  59