extras.py 文件源码

def register_uuid(oids=None, conn_or_curs=None):
    """Create the UUID type and an uuid.UUID adapter.

    :param oids: oid for the PostgreSQL :sql:`uuid` type, or 2-items sequence
        with oids of the type and the array. If not specified, use PostgreSQL
        standard oids.
    :param conn_or_curs: where to register the typecaster. If not specified,
        register it globally.
    """

    import uuid

    if not oids:
        oid1 = 2950
        oid2 = 2951
    elif isinstance(oids, (list, tuple)):
        oid1, oid2 = oids
    else:
        oid1 = oids
        oid2 = 2951

    _ext.UUID = _ext.new_type((oid1, ), "UUID",
            lambda data, cursor: data and uuid.UUID(data) or None)
    _ext.UUIDARRAY = _ext.new_array_type((oid2,), "UUID[]", _ext.UUID)

    _ext.register_type(_ext.UUID, conn_or_curs)
    _ext.register_type(_ext.UUIDARRAY, conn_or_curs)
    _ext.register_adapter(uuid.UUID, UUID_adapter)

    return _ext.UUID


# a type, dbtype and adapter for PostgreSQL inet type