[jira] [Resolved] (SLING-11369) Provide Maven Enforcer rule which checks that provided dependencies are contained in the runtime Maven classpath

["Konrad Windszus (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SLING-11369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Konrad Windszus resolved SLING-11369.
-------------------------------------
    Resolution: Fixed

> Provide Maven Enforcer rule which checks that provided dependencies are contained in the runtime Maven classpath
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: SLING-11369
>                 URL: https://issues.apache.org/jira/browse/SLING-11369
>             Project: Sling
>          Issue Type: New Feature
>          Components: Tooling
>            Reporter: Konrad Windszus
>            Assignee: Konrad Windszus
>            Priority: Major
>             Fix For: Maven Enforcer Rules 1.0.0
>
>         Attachments: Maven-Enforcer-Output.png
>
>
> All dependencies with provided scope are not transitively inherited. While this isn't a problem usually during compile time it is a problem for Maven plugins at run time, as they use the Maven dependency classpath also at run time (https://maven.apache.org/guides/mini/guide-maven-classloading.html#3-plugin-classloaders). At run time they fail if the (transitive) provided dependency has not been declared explicitly.
> As manually specifying all transitive (but hidden) provided dependencies is a very error-prone process an enforcer rule for that would be highly beneficial. Especially as the transitive dependencies have to be rechecked once you upgrade to a newer version.
> Example:
> My Maven Plugin "A" -> 3rd Party Library "B" -> Provided Dependency "C"
> As "B" uses "C" at run time it needs to be declared as dependency of "A" as well otherwise you might see  java.lang.ClassNotFoundException when executing Maven plugin "A".
> This was originally proposed in MENFORCER-385 but declined as considered too much of an edge case.
> Compare with the discussion at https://lists.apache.org/thread/ttncrwmsnk29qy6n3on6ymfbq9s7dbnm



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