wrapIfMissing

wrapIfMissing(text: String, wrapper: String): String

Wraps text with wrapper if that wrapper is missing from the start or end of the given string.

Introduced in DataWeave version 2.2.0.

Parameters

Name Description

Name	Description
`text`	The input string.
`wrapper`	The content used to wrap.

text

The input string.

wrapper

The content used to wrap.

Example

This example shows how wrapIfMissing behaves with different inputs and sizes.

Source

%dw 2.0
import * from dw::core::Strings
output application/json
---
 {
   "a": wrapIfMissing(null, "'"),
   "b": wrapIfMissing("", "'"),
   "c": wrapIfMissing("ab", "x"),
   "d": wrapIfMissing("'ab'", "'"),
   "e": wrapIfMissing("/", '/'),
   "f": wrapIfMissing("a/b/c", '/'),
   "g": wrapIfMissing("/a/b/c", '/'),
   "h": wrapIfMissing("a/b/c/", '/')
 }DataWeave

Output

{
   "a": null,
   "b": "'",
   "c": "xabx",
   "d": "'ab'",
   "e": "/",
   "f": "/a/b/c/",
   "g": "/a/b/c/",
   "h": "/a/b/c/"
 }JSON

wrapIfMissing(text: Null, wrapper: String): Null

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

Introduced in DataWeave version 2.2.0.