%dw 2.0
import failIf from dw::Runtime
var result = {}
output application/json
---
{ "result" : "SUCCESS" failIf (isEmpty(result)) }
failIf
DataWeave 2.2 is compatible and bundled with Mule 4.2. Standard Support for Mule 4.2 ended on May 2, 2021, and this version of Mule will reach its End of Life on May 2, 2023, when Extended Support ends. Deployments of new applications to CloudHub that use this version of Mule are no longer allowed. Only in-place updates to applications are permitted. MuleSoft recommends that you upgrade to the latest version of Mule 4 that is in Standard Support so that your applications run with the latest fixes and security enhancements. |
failIf(T, (value: T) -> Boolean, String): T
Produces an error with the specified message if the expression in
the evaluator returns true
, otherwise returns the value.
Parameters
Name | Description |
---|---|
|
The value to return only if the |
|
Expression that returns |
Example
This example produces a runtime error (instead of a SUCCESS message) because
the expression isEmpty(result)
is true
. It is true
because an empty
object is passed through variable result
.