What is a valid expression for the Choice router’s when expression to route events to the documenticShipping flow?

Refer to the exhibit.

What is a valid expression for the Choice router’s when expression to route events to the documenticShipping flow?
A . 0#[ payload = ‘US’ ]
B . #[ payload == ‘US’ J
C . #[ if(payload = ‘US’) J
D . #[ if(payload == "US") ]

View Answer

Answer: B

Explanation:

Choice Router

The Choice router dynamically routes messages through a flow according to a set of DataWeave expressions that evaluate message content. Each expression is associated with a different routing option. The effect is to add conditional processing to a flow, similar to an if/then/else code block in most programming languages.

Only one of the routes in the Choice router executes, meaning that the first expression that evaluates to true triggers that route’s execution and the others are not checked. If none of the expressions are true, then the default route executes.

Properties of <when>

PropertyDescription

Expression (expression)

Expression in DataWeave language to evaluate input.

If the expression evaluates to true, this routing option is used:

<when expression="#[vars.language == ‘Spanish’]" >

Mulesoft Doc Ref: https://docs.mulesoft.com/mule-runtime/4.3/choice-router-concept With respect to above information,

Option 1 is the correct syntax as others are incorrect because of below reasons

* Single = is not the correct syntax to validate the condition. It should be ==

* If keyword is not required in when condition.