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.

locationString(Any): String

Returns the location string of a given value.


Name Description


A value of any type.


This example returns the contents of the line (the location) that defines variable a in the header of the DataWeave script.


%dw 2.0
import * from dw::Runtime
var a = 123
output application/json


"var a = 123"

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