[jira] [Commented] (MNG-6371) Use ServiceLoader mechanism in JDK9 in maven plugins

["Maarten Mulders (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MNG-6371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17428264#comment-17428264 ] 

Maarten Mulders commented on MNG-6371:
--------------------------------------

As far as I know, in more recent versions of Maven, this is possible. I wrote a little [PlantUML plugin|https://github.com/mthmulders/puml-maven-plugin] some time ago that leverages [{{ServiceLoader}}|https://github.com/mthmulders/puml-maven-plugin/blob/main/maven-plugin/src/main/java/it/mulders/puml/plugin/ServiceLoaderPlantUmlFactory.java] to find an adapter for the correct version of PlantUML, and it works with both Maven 3.8.3 and 4.0.0-alpha-1-SNAPSHOT.

That doesn't fix it for Maven 3.5.2 of course...

> Use ServiceLoader mechanism in JDK9 in maven plugins
> ----------------------------------------------------
>
>                 Key: MNG-6371
>                 URL: https://issues.apache.org/jira/browse/MNG-6371
>             Project: Maven
>          Issue Type: Improvement
>          Components: Class Loading, Plugins and Lifecycle
>    Affects Versions: 3.5.2
>            Reporter: John Poth
>            Priority: Major
>
> It'd be nice to be able to use the ServiceLoader mechanism in maven plugins when using JDK9:
>  
> {code:java}
> import org.apache.maven.plugin.AbstractMojo;
> public class MyMojo extends AbstractMojo {
>     public void execute() throws MojoExecutionException {
>         // this is empty
>         Iterator<Tool> iterator = ServiceLoader.load(javax.tools.Tool.class).iterator();
>     }
> }
> {code}
>  
> Work around is to use a different classloader.



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