Ejemplo n.º 1
0
    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
Ejemplo n.º 2
0
    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