Red Hat Summit Red Hat SummitSupportConsoleDevelopersStart a trialContact

Chapter 6. Performing a transformation with the MTA command-line interface

You can use transformation to transform Java applications source code by using the transform openrewrite command.

Important

Performing transformation requires the container runtime to be configured.

6.1. Transforming applications source code
Copy link

To update Java libraries or frameworks, for example, javax or Spring Boot, you can transform Java application source code by using the transform openrewrite command. The openrewrite subcommand allows running OpenRewrite recipes on source code.

Note

You can only use a single target to run the transform overwrite command.

Prerequisites

  • You configured the container runtime.

Procedure

  1. Display the available OpenRewrite recipes: 

    $ mta-cli transform openrewrite --list-targets
    Copy to Clipboard Toggle word wrap

  2. Transform the application source code: 

    $ mta-cli transform openrewrite --input=<path_to_source_code> --target=<target_from_the_list>
    Copy to Clipboard Toggle word wrap

Verification

  • Inspect the target application source code diff to see the transformation.

6.2. Available OpenRewrite recipes
Copy link

The following are the OpenRewrite recipes that you can use for transforming application source code.

Expand
Table 6.1. Available OpenRewrite recipes
Migration pathPurposeThe rewrite.config file locationActive recipes

Java EE to Jakarta EE

Replace import of javax packages with equivalent jakarta packages.

Replace javax artifacts, declared within pom.xml files, with the jakarta equivalents.

<MTA_HOME>/rules/openrewrite/jakarta \ /javax/imports/rewrite.yml

org.jboss.windup.JavaxToJakarta

Java EE to Jakarta EE

Rename bootstrapping files.

<MTA_HOME>/rules/openrewrite/jakarta \ /javax/bootstrapping/rewrite.yml

org.jboss.windup.jakarta.javax. \ BootstrappingFiles

Java EE to Jakarta EE

Transform the persistence.xml file configuration.

<MTA_HOME>/rules/openrewrite/jakarta \ /javax/xml/rewrite.yml

org.jboss.windup.javax-jakarta. \ PersistenceXML

Spring Boot to Quarkus

Replace spring.jpa.hibernate.ddl-auto property within files matching application*.properties.

<MTA_HOME>/rules/openrewrite/quarkus \ /springboot/properties/rewrite.yml

org.jboss.windup.sb-quarkus.Properties

6.3. The openrewrite command options
Copy link

The following are the options that you can use together with the mta-cli transform openrewrite command to adjust the command behavior to your needs.

Expand
Table 6.2. The mta-cli transform openrewrite command options
OptionDescription

--goal (string)

A target goal. The default is "dryRun".

--help

Display all mta-cli transform openrewrite command options.

--input (string)

A path to the application source code directory.

--list-targets

List all available OpenRewrite recipes.

-maven-settings (string)

A path to a custom Maven settings file.

--target (string)

A target OpenRewrite recipe.

--log-level uint32

A log level. The default is 4.

--no-cleanup

Do not clean up temporary resources.

Back to top
Red Hat logoGithubredditYoutubeTwitter

Learn

Try, buy, & sell

Communities

About Red Hat Documentation

We help Red Hat users innovate and achieve their goals with our products and services with content they can trust. Explore our recent updates.

Making open source more inclusive

Red Hat is committed to replacing problematic language in our code, documentation, and web properties. For more details, see the Red Hat Blog.

About Red Hat

We deliver hardened solutions that make it easier for enterprises to work across platforms and environments, from the core datacenter to the network edge.

Theme

© 2025 Red Hat