Dataweave 2.0 withMaxSize函数

Question

我在外部dwl文件中进行了转换。我试图使用'withMaxSize‘来限制字符串的大小。但我的问题还没解决。

fun providerObjMapping(payload) = (if(! isEmpty(payload.ProviderUniqueID) ) {

  providerUniqueID:payload.ProviderUniqueID dw::core::Strings::withMaxSize 3,
  npi:payload.NPI,
  salutation:payload.Salutation,
  firstName:payload.FirstName,
  middleName:payload.MiddleName

  }else {})

“”脚本‘%dw2.0导入*来自dw::appian_crf_mapping

output application/json
---
generateObj(vars.tableName, payload) ' has errors:


    Unable to resolve reference of dw::core::Strings::withMaxSize. at 29 : 29" evaluating expression: "%dw 2.0
import * from dw::appian_crf_mapping

output application/json
---
generateObj(vars.tableName, payload)"."

下面是我尝试过的方法。

1. providerUniqueID:payload.ProviderUniqueID dw::core::Strings::withMaxSize 3-不工作
2. maxLength(数据)= data：：core：：maxLength：：withMaxSize 3 maxLength-不工作
3. 导入* dw::core::Strings maxLength( data ) =data withMaxSize 3 withMaxSize 3

运行时: 4.2.1在这里输入图像描述

Answer 1

根据MuleSoft文档，withMaxSize是在Mule运行时4.3.0或更高版本(https://docs.mulesoft.com/mule-runtime/4.3/dw-strings-functions-withmaxsize)支持的DataWeave 2.3.0中引入的。

在使用Mule运行时4.2.1时，可以将withMaxSize函数实现为：

%dw 2.0
output application/json

fun withMaxSize(val, maxSize) = val[0 to (((min([sizeOf(val), maxSize])) as Number) - 1)]
---
withMaxSize(payload.message, 3)

Answer 2

withMaxSize函数:它只提供4.3.0运行时或更高版本。

请查看我们的Relaese注释以获得更多信息：发布说明4.3.0运行时

请使用4.3.0版本的运行时.It将为您工作。