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https://issues.apache.org/jira/browse/TOMEE-4705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18117365#comment-18117365
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Richard Zowalla commented on TOMEE-4705:
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Backported to tomee\-10.x as 9ddb8cc022.
> Migrate the Maven plugins off the Maven 2 API
> ---------------------------------------------
>
> Key: TOMEE-4705
> URL: https://issues.apache.org/jira/browse/TOMEE-4705
> Project: TomEE
> Issue Type: Task
> Reporter: Richard Zowalla
> Priority: Major
> Fix For: 11.0.0
>
>
> The TomEE Maven plugins still compiled and resolved against the Maven 2 API.
> {{maven.version}} in {{maven/pom.xml}} was 2.2.1, even though the project
> itself
> requires Maven 3.9.x to build.
> Changes:* {{maven.version}} moves from 2.2.1 to 3.9.16.
> * {{maven\-project}} does not exist beyond Maven 2. {{MavenProject}} and
> {{MavenProjectHelper}} live in {{maven\-core}} now, so the five modules that
> used it depend on {{maven\-core}}.
> * {{tomee\-maven\-plugin}}, {{tomee\-embedded\-maven\-plugin}} and
> {{jarstxt\-maven\-plugin}} also use {{ArtifactFactory}}, {{ArtifactResolver}}
> and the {{ArtifactRepository}} types around them, which Maven 3 keeps in
> {{maven\-compat}}, so they take that as well.
> * Dropping Maven 2 also drops backport\-util\-concurrent, which it pulled in
> transitively. {{JarsTxtMojo}} and {{JsCustomizertest}} imported
> {{edu.emory.mathcs.backport.java.util.Collections}}, a Java 1.4 era backport
> of {{java.util.concurrent}}, and now use {{java.util.Collections}}.
> * The {{aether\-api}} dependencyManagement entry is removed. Nothing declared
> it
> and no source imports {{org.sonatype.aether}}; Maven 3.1 moved to Eclipse
> Aether and the resolver arrives through {{maven\-core}}.
> All eight modules under {{maven/}} build and their tests pass. No
> {{org.apache.maven}} artifact below 3.9.16 is left in any of their dependency
> trees.
> Follow\-up: {{ArtifactFactory}} and {{ArtifactResolver}} are deprecated in
> Maven
> 3 and only available through {{maven\-compat}}. Moving those call sites to
> {{RepositorySystem}} / Eclipse Aether would let {{maven\-compat}} be dropped.
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