基于属性给出误差的动态范围

问题描述

在 Dataweave 1.0 中，我需要将“地址”值设置为基于属性“address.length”截断的文本。例如，如果 address.length 大于 25，则 customer.addressLine1 需要截断为前 25 个字符，否则将 Address 设置为“customer.addressLine1”中的值。

代码：

property file --> address.length=25

(ns2#Address: customer.addressLine1[0.."${address.length}" as :number-1] when ((((sizeOf (customer.addressLine1)) > ("${address.length}" as :number)))) otherwise customer.addressLine1) 

例外：

Root Exception stack trace:
com.mulesoft.weave.mule.exception.weaveExecutionException: Exception while executing: 
                        (ns2#Address: customer.addressLine1[0.."25" as :number-1] when ((((sizeOf (customer.addressLine1)) > ("25" as :number)))) otherwise customer.addressLine1
                                                                      ^
Type mismatch for 'Descendants Selector ..' operator
     found :number
  required :array.

解决方法

(ns2#Address: customer.addressLine1[0 to "${address.length}" as :number - 1] when (sizeOf (customer.addressLine1)) > ("${address.length}" as :number) otherwise customer.addressLine1)

试试上面的代码。范围选择器不正确。应该是 [0 to "${address.length}" as :number - 1]

错误表明您正在使用后代选择器。应该使用范围选择器。