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.

compose(Array<String>, Array<String>): String

Uses a custom interpolator to replace URL components with a encodeURIComponent result.


Name Description


A string array that provides the part of the URL to encode.


This example passes in text to encode using $(myText), where myText is a variable defined in the header. Notice that the spaces in the input are encoded in the output URL as %20. Also notice that the entire input to the compose function is surrounded by backticks.


%dw 2.0
import * from dw::core::URL
var myText = " text to encode "
output application/json
{ "composition" : compose `http://asd/$(myText)/text` }


{ "composition": "http://asd/%20text%20to%20encode%20/text" }

Was this article helpful?

💙 Thanks for your feedback!

Edit on GitHub
Submit your feedback!
Share your thoughts to help us build the best documentation experience for you!
Take our latest survey!