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From "Guillermo Fernandes (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MNG-6240) Duplicate components in plugin extension realm when plugin depends on maven-aether-resolver
Date Tue, 17 Jul 2018 16:57:00 GMT

    [ https://issues.apache.org/jira/browse/MNG-6240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16546883#comment-16546883
] 

Guillermo Fernandes commented on MNG-6240:
------------------------------------------

I'm having this issue even using Maven 3.5.2 or 3.5.3 and maven-deploy-plugin 2.8.2. Could
it be related to a particular plugin (besides maven-deploy-plugin) or the project classpath?
In particular this project has dependency to Aether (it uses Aether to resolve dependencies
programmatically).

> Duplicate components in plugin extension realm when plugin depends on maven-aether-resolver
> -------------------------------------------------------------------------------------------
>
>                 Key: MNG-6240
>                 URL: https://issues.apache.org/jira/browse/MNG-6240
>             Project: Maven
>          Issue Type: Bug
>          Components: Class Loading
>    Affects Versions: 3.5.0
>            Reporter: Guillaume Boué
>            Assignee: Guillaume Boué
>            Priority: Major
>             Fix For: 3.5.2
>
>
> When a plugin extension has a dependency on {{maven-aether-resolver}}, the components
of this artifact are added into the plugin realm even though Maven Core already provides them.
This is a regression introduced by the rename of this module to {{maven-resolver-provider}}
in 3.5.0.
> This rename has kept all the classes of {{maven-aether-resolver}} for compatibility,
therefore the old artifact name also needs to be exported by Maven Core in {{extension.xml}}.
> A visible side-effect of this is MDEPLOY-221, where the two {{MetadataGeneratorFactory}}
components of {{maven-aether-provider}} (which are {{SnapshotMetadataGeneratorFactory}} and
{{VersionsMetadataGeneratorFactory}}) are present twice as Guice bindings, and wrong metadata
information is deployed as a consequence. This is due to the Flex Mojos plugin extension which
depends on {{maven-aether-resolver}} used in the build.



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