__init__.py 文件源码

def make_ascending_query(self, kind_class, keys_only=False, filters=None):
    """Construct a query for this key range without setting the scan direction.

    Args:
      kind_class: A kind implementation class (a subclass of either
        db.Model or ndb.Model).
      keys_only: bool, default False, query only for keys.
      filters: optional list of filters to apply to the query. Each filter is
        a tuple: (<property_name_as_str>, <query_operation_as_str>, <value>).
        User filters are applied first.

    Returns:
      A db.Query or ndb.Query instance (corresponding to kind_class).
    """
    if ndb is not None:
      if issubclass(kind_class, ndb.Model):
        return self.make_ascending_ndb_query(
            kind_class, keys_only=keys_only, filters=filters)
    assert self._app is None, '_app is not supported for db.Query'
    query = db.Query(kind_class, namespace=self.namespace, keys_only=keys_only)
    query.order("__key__")

    query = self.filter_query(query, filters=filters)
    return query