Dataweave 2.0 withMaxSize function

Question

I've transformation in external dwl file. I'm trying to use 'withMaxSize' to limit the size of string. But I'm getting below issue.

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 {})

""Script '%dw 2.0 import * from 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)"."

Below are the ways I've tried.

providerUniqueID:payload.ProviderUniqueID dw::core::Strings::withMaxSize 3 - Not Working
fun maxLength(data) = data dw::core::Strings::withMaxSize 3 providerUniqueID:maxLengh(payload.ProviderUniqueID) - not Working
import * dw::core::Strings fun maxLength(data) = data withMaxSize 3 providerUniqueID:maxLengh(payload.ProviderUniqueID) - not working

Runtime: 4.2.1enter image description here

olamiral olamiral · Accepted Answer · 2020-12-05T20:16:21

According to MuleSoft documentation, withMaxSize was introduced in DataWeave 2.3.0, supported by Mule Runtime 4.3.0 or later (https://docs.mulesoft.com/mule-runtime/4.3/dw-strings-functions-withmaxsize)

As you are using Mule Runtime 4.2.1, you could implement the withMaxSize function as:

%dw 2.0
output application/json

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

Dataweave 2.0 withMaxSize function

2 Answers