Question

I have a multi-module project.

parent POM (1.0-SNAPSHOT)
|-- module1 (1.0-SNAPSHOT)
|-- module2 (1.0-SNAPSHOT)
`-- module3 (1.0-SNAPSHOT)

When I execute mvn release:prepare it verify that parent POM has a SNAPSHOT version and all dependent modules don’t have a SNAPSHOT version. How automatically update all child modules from SNAPSHOT to the next release version?

I would like automatically increment version for all modules.

Answer 1

The release plugin can handle that. Did you check Updating POM Versions? But…
I don’t get something. Changing the version in the POMs from x-SNAPSHOT to a new version and bumping the version in the POMs to a new value y-SNAPSHOT should be done by release:prepare as explained in Prepare a Release. What is going wrong when using this goal?

Update: The autoVersionSubmodules parameter might be what you’re looking for. From the Prepare a Release example:

Multi-module projects

You will be prompted for the version
number for each module of the project.
If you prefer that every module gets
the same version as the parent POM,
you can set the option
autoVersionSubmodules to true. Now you
will be asked only once for the
release version and the next
development version.

Snippet of parent pom.xml

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-release-plugin</artifactId>
            <version>x.y.z</version>
            <configuration>
                <goals>deploy</goals>
                <autoversionsubmodules>true</autoversionsubmodules>
            </configuration>
        </plugin>
    </plugins>
</build>