How to get access to Maven's dependency hierarchy within a plugin

Question

In my plugin I need to process the dependency hierarchy and get information (groupId, artifactId, version etc) about each dependency and if it was excluded. What is the best

Answer 1

You could use MavenProject#getDependencyArtifacts() or MavenProject#getDependencies() (the later one returns also transitive dependencies).

/**
 * Test Mojo
 *
 * @goal test
 * @requiresDependencyResolution compile
 */
public class TestMojo extends AbstractMojo {

    /**
     * The Maven Project.
     *
     * @parameter expression="${project}"
     * @required
     * @readonly
     */
    private MavenProject project = null;

    /**
     * Execute Mojo.
     *
     * @throws MojoExecutionException If an error occurs.
     * @throws MojoFailureException If an error occurs.
     */
    public void execute() throws MojoExecutionException,
MojoFailureException {

        ...

        Set dependencies = project.getDependencies();

       ...
    }

}

I'm not totally sure but I think both methods return a collection of Artifact implementations that expose getters for groupId, artifactId, version, etc.