def __new__(self, name, bases, cdict, _p_changed=False):
# _p_changed will be None if we are being loaded from the
# database, because __getnewargs__ returns an extra argument
# for _p_changed.
# The above is *not* true for old (< 2.8) ZClass code.
# Old ZClass records have all of their data in their
# arguments. This is rather fortunate. It means that
# we don't need to call __setstate__. We *do*, however, need
# to call pmc_init_of.
cdict = dict([(k, v) for (k, v) in cdict.items()
if not k.startswith('_p_')])
cdict['_p_class_dict'] = {'_p_changed': _p_changed}
result = super(ZClassPersistentMetaClass, self
).__new__(self, name, bases, cdict)
ExtensionClass.pmc_init_of(result)
return result
def __setstate__(self, state):
try:
self.__bases__, cdict = state
except TypeError:
# Maybe an old ZClass with state == None
if state is None:
cdict = None
if cdict is not None:
cdict = dict([(k, v) for (k, v) in cdict.items()
if not k.startswith('_p_')])
_p_class_dict = self._p_class_dict
self._p_class_dict = {}
to_remove = [
k for k in self.__dict__
if ((k not in cdict)
and
(k not in ZODB.persistentclass.special_class_descrs)
and
(k != '_p_class_dict')
)]
for k in to_remove:
delattr(self, k)
try:
del cdict['__slotnames__']
except KeyError:
pass
for k, v in cdict.items():
setattr(self, k, v)
self._p_class_dict = _p_class_dict
ExtensionClass.pmc_init_of(self)
self._p_changed = False