Question

I am working on a project that has an EJB-module. There has been a problem with this module not getting into our maven-repository (Nexus), due to the fact that it lacks version numbering. I am currently trying to fix this, but I can’t seem to get it the way I want it to.

In the pom.xml of the EJB-project:

  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-ejb-plugin</artifactId>
    <configuration>
      <ejbVersion>3.0</ejbVersion>
      <outputDirectory>${basedir}/target/classes </outputDirectory>
      <jarName>MyProjectEJB</jarName>
      <generateClient>true</generateClient>
      <archive>
        <manifest>
          <addClasspath>true</addClasspath>
        </manifest>
      </archive>
    </configuration>
  </plugin>

This is the way it originally was. Building the module resulted in two .jar files: MyProjectEJB.jar and MyProjectEJB-client.jar. I’ve tried the following to add version numbering:

    <jarName>MyProjectEJB-${project.version}<jarName>

Now, I get something like: MyProjectEJB-4.1-SNAPSHOT.jar and MyProjectEJB-4.1-SNAPSHOT-client.jar. This is almost correct, but I would really like the version number to be last in the client as well (so MyProjectEJB-client-4.1-SNAPSHOT).

How can I achieve this?

Answer 1

client is in this case a Maven Classifier.

The classifier allows to distinguish artifacts that were built from the same POM but differ in their content. It is some optional and arbitrary string that – if present – is appended to the artifact name just after the version number.

If you move it around in the name then it will not be possible to have correct dependencies on it.

The following dependency will use the EJB:

<dependency>
    <groupId>your.group</groupId>
    <artifactId>MyProjectEJB</artifactId>
    <version>1.0</version>
</dependency>

The following dependency will use the EJB client:

<dependency>
    <groupId>your.group</groupId>
    <artifactId>MyProjectEJB</artifactId>
    <version>1.0</version>
    <classifier>client</classifier>
</dependency>