son_manipulator.py 文件源码

def transform_outgoing(self, son, collection):
        """Replace DBRefs with embedded documents.
        """

        def transform_value(value):
            if isinstance(value, DBRef):
                return self.database.dereference(value)
            elif isinstance(value, list):
                return [transform_value(v) for v in value]
            elif isinstance(value, collections.MutableMapping):
                return transform_dict(SON(value))
            return value

        def transform_dict(object):
            for (key, value) in object.items():
                object[key] = transform_value(value)
            return object

        return transform_dict(SON(son))

# TODO make a generic translator for custom types. Take encode, decode,
# should_encode and should_decode functions and just encode and decode where
# necessary. See examples/custom_type.py for where this would be useful.
# Alternatively it could take a should_encode, to_binary, from_binary and
# binary subtype.