自定义多列排序

    @Test
    public void readTest() {
        AppBuilder builder = AppBuilder.builder(AppConf.share());
        List<Row> list = new ArrayList<>();
        list.add(builder.reader().createRow(2, "A"));
        list.add(builder.reader().createRow(3, "C"));
        list.add(builder.reader().createRow(1, "D"));
        list.add(builder.reader().createRow(6, "E"));
        list.add(builder.reader().createRow(2, "D"));
        list.add(builder.reader().createRow(9, "B"));

        Dataset<Row> ds = builder.reader().createByList(list, new StructType().add("num", DataTypes.IntegerType).add("str", DataTypes.StringType));

        Integer[] index = new Integer[]{9,3,1,6};
        String[] index2 = new String[]{"E", "D", "C", "B", "A"};

         ds.orderBy(
                 functions.array_position(functions.lit(index), functions.col("num")).desc(),
                 functions.array_position(functions.lit(index2), functions.col("str"))
         ).show();

    }