Method _setup_table

lib/sqlalchemy/orm/decl_base.py:1724–1800

(self, table: Optional[FromClause] = None)

                )

    def _setup_table(self, table: Optional[FromClause] = None) -> None:
        cls = self.cls
        cls_as_Decl = cast("MappedClassProtocol[Any]", cls)

        tablename = self.tablename
        table_args = self.table_args
        clsdict_view = self.clsdict_view
        declared_columns = self.declared_columns
        column_ordering = self.column_ordering

        manager = attributes.manager_of_class(cls)

        if (
            self.table_fn is None
            and "__table__" not in clsdict_view
            and table is None
        ):
            if hasattr(cls, "__table_cls__"):
                table_cls = cast(
                    Type[Table],
                    util.unbound_method_to_callable(cls.__table_cls__),  # type: ignore  # noqa: E501
                )
            else:
                table_cls = Table

            if tablename is not None:
                args: Tuple[Any, ...] = ()
                table_kw: Dict[str, Any] = {}

                if table_args:
                    if isinstance(table_args, dict):
                        table_kw = table_args
                    elif isinstance(table_args, tuple):
                        if isinstance(table_args[-1], dict):
                            args, table_kw = table_args[0:-1], table_args[-1]
                        else:
                            args = table_args

                autoload_with = clsdict_view.get("__autoload_with__")
                if autoload_with:
                    table_kw["autoload_with"] = autoload_with

                autoload = clsdict_view.get("__autoload__")
                if autoload:
                    table_kw["autoload"] = True

                sorted_columns = sorted(
                    declared_columns,
                    key=lambda c: column_ordering.get(c, 0),
                )
                table = self.set_cls_attribute(
                    "__table__",
                    table_cls(
                        tablename,
                        self._metadata_for_cls(manager),
                        *sorted_columns,
                        *args,
                        **table_kw,