def __setstate__(self, state):
if isinstance(state, dict):
warn(u'Unpickling an old datamatrix')
self.__dict__.update(state)
return
# Is used by pickle.load. Because __getstate__() strips the _id, we
# need to generate a new id for the DataMatrix upon unpickling.
global _id
OrderedState.__setstate__(self, state)
object.__setattr__(self, u'_id', _id)
for name, column in self.columns:
column._datamatrix = self
_id += 1
def __setstate__(self, state):
OrderedState.__setstate__(self, state)
# Start with a _metaindex=None after unpickling
self._metaindex = None
def __getstate__(self):
# Is used by pickle.dump. To make sure that identical datamatrices with
# different _ids are considered identical, we strip the _id property.
return OrderedState.__getstate__(self, ignore=u'_id')
def __getstate__(self):
# Is used by pickle.dump. To make sure that Index objects with only a
# different _metaindex are considered identical
return OrderedState.__getstate__(self, ignore=u'_metaindex')