Replace DataWeave with Java and Groovy

DataWeave is a proprietary transformation language that only works inside MuleSoft. Java and Groovy are real languages with real debuggers, real test frameworks, and millions of developers who know them.

What you're running today

DataWeave

MuleSoft's proprietary functional transformation language. Powerful but niche — limited debugging, no IDE parity with mainstream languages, and a tiny talent pool of specialists.

What you're moving to

Java / Groovy + Jackson + Camel Data Formats

Transform data with languages you already know. Jackson for JSON, JAXB for XML, Groovy for scripting, and Camel's built-in data formats for everything in between. Full debugger support, unit testing, and a planet-sized talent pool.

Why real languages win

Real debugging

Set breakpoints, inspect variables, step through transformations line by line. No more guessing why your DataWeave expression returned null.

Real testing

JUnit, TestNG, Spock — write unit tests for your transformations with the same frameworks you use for everything else. No proprietary test harness needed.

Groovy for scripting

When you need DataWeave-like conciseness, Groovy delivers. Dynamic typing, closures, and native JSON/XML support — with the full power of the JVM behind it.

No lock-in

DataWeave only runs inside MuleSoft. Java and Groovy run everywhere. Your transformation logic is portable, testable, and owned by you.

Your transformations shouldn't be held hostage.

We'll migrate your DataWeave expressions to clean, maintainable Java and Groovy.

Book a Free Assessment