mapString

mapString(@StreamCapable text: String, mapper: (character: String, index: Number) -> String): String

Applies an expression to every character of a string.

Introduced in DataWeave version 2.4.0.

Name Description

Name	Description
`text`	The string to map.
`mapper`	Expression that applies to each character (`$`) or index (`$$`) of the `text` string and returns a string.

text

The string to map.

mapper

Expression that applies to each character ($) or index ($$) of the text string and returns a string.

This example redacts sensitive data from a string.

%dw 2.0
import * from dw::core::Strings
output application/json
---
{ balance: ("\$234" mapString if (isNumeric($)) "~" else $) }DataWeave

{
  "balance": "$~~~"
}Json

Helper function that enables mapString to work with a null value.

Introduced in DataWeave version 2.4.0.