isNullType

isNullType(Type): Boolean

Returns true if the input is the Null type.

Introduced in DataWeave 2.3.0. Supported by Mule 4.3 and later.

Parameters

Name	Description
t	The type to check.

Example

This example shows how isNullType behaves with different inputs.

Source

%dw 2.0
import * from dw::core::Types
type ANull = Null
output application/json
---
{
   a: isNullType(ANull),
   b: isNullType(Null),
   c: isNullType(String),
}

Output

{
  "a": true,
  "b": true,
  "c": false
}