%dw 2.0
import failIf from dw::Runtime
var empty = {}
var notEmpty = { "a" : "b" }
output application/json
---
{ "result" : "SUCCESS" failIf (isEmpty(empty)) }
failIf
DataWeave 2.1 is compatible with Mule 4.1. Standard Support for Mule 4.1 ended on November 2, 2020, and this version of Mule will reach its End of Life on November 2, 2022, 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 a failure with the specified message if the expression in
the evaluator returns true
. If not true
, returns the value.
Parameters
Name | Description |
---|---|
|
The value to return only if the |
|
Expression that returns |
Example
This example produces a failure (instead of a { "result": "SUCCESS" }
message) because
the expression isEmpty(empty)
is true
. The empty
variable defines an empty object.