Mule 在Dataweave中添加条件检查时出错

我正在使用Anypoint Studio 6.1和Mule 3.8.1

我有一个来自CSV文件的布尔字段，我想添加代码来清理数据，例如，将“Y”、“Yes”转换为true或将其设置为false

我只希望在字段有值的情况下代码才能工作。如果它是“”，则我希望忽略它。如果它已填充，则清除数据。我原以为添加when语句就是答案，但它在预览中出错了。我如何使这成为一个有条件的检查

数据编织代码：

(payload filter $$ > 2) map ((payload01 , indexOfPayload01) -> {
    ({
        isPaid: true
    }
        when payload01.balanced != ''
        and ((lower payload01.balanced == 'yes'
        or (lower payload01.balanced) == 'y'
        or (lower payload01.balanced ) == 'true')
        otherwise {
        isPaid: false
    })
})

})

---

试试上面的方法。

请添加一些英文文本来解释您的答案。不要只发布代码答案。

Please use below code snipped of Data Weave:
(payload filter $$ > 2) map ((payload01 , indexOfPayload01) -> {
({
    isPaid: true    when ((payload01.balanced != '')
                    and ((lower payload01.balanced) == 'yes')
                    or ((lower payload01.balanced) == 'y')
                    or ((lower payload01.balanced ) == 'true')) otherwise false
})

   (payload filter $$ > 2) map ((payload01 , indexOfPayload01) -> {
({
    isPaid: true
}
    when payload01.balanced?
    and ((lower payload01.balanced == 'yes'
    or (lower payload01.balanced) == 'y'
    or (lower payload01.balanced ) == 'true')
    otherwise {
    isPaid: false
})