How to get the semver Major part of a Maven version? - maven

Question

Is it possible to get the major version (<Major>.<Minor>.<Patch>) of the project.version?
For example if my version is 1.3.4, I'd like to get 1 to later use it in a configuration of the same pom.xml
Something like:
<configuration>
<name>project_name.${project.version:major}</name>
</configuration>
If not, what are the alternatives?

Answer 1

Found it. The build-helper-maven-plugin has the ability to parse-out the components of the version.
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.5</version>
<executions>
<execution>
<phase>initialize</phase>
<id>parse-version</id>
<goals>
<goal>parse-version</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<tasks>
<echo>[version] ${project.version}</echo>
<echo>[majorVersion] ${parsedVersion.majorVersion}</echo>
</tasks>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>

Answer 2

This works on Maven 3.3.9:
${project.artifact.selectedVersion.majorVersion}

Answer 3

Versions don't necessarily come in the structure you describe.
Maven has conventions for trailing numbers, but you don't have to use them.
If you have a convention that you like that you want to disassemble, you can write your own maven plugin that sets several properties to the several pieces as you define them.