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.

matches(String, Regex): Boolean

Checks if an expression matches the entire input string.

For use cases where you need to output or conditionally process the matched value, see Pattern Matching in DataWeave.


Name Description


The input string.


A Java regular expression for matching characters in the string.


This example indicates whether the regular expression matches the input text. Note that you can also use the matches(text,matcher) notation (for example, matches("admin123", /a.*\d+/)).


%dw 2.0
output application/json
[ ("admin123" matches /a.*\d+/), ("admin123" matches /^b.+/) ]


[ true, false ]

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