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From "Karl Heinz Marbaise (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MDEP-594) Dependency reported as "unused declared" when runtime-retention type annotation is used
Date Mon, 02 Apr 2018 12:21:00 GMT

    [ https://issues.apache.org/jira/browse/MDEP-594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16422194#comment-16422194
] 

Karl Heinz Marbaise commented on MDEP-594:
------------------------------------------

Hasn't that being fixed with 3.0.1/3.0.2 of maven-dependency-plugin ? 

> Dependency reported as "unused declared" when runtime-retention type annotation is used
> ---------------------------------------------------------------------------------------
>
>                 Key: MDEP-594
>                 URL: https://issues.apache.org/jira/browse/MDEP-594
>             Project: Maven Dependency Plugin
>          Issue Type: Bug
>          Components: analyze
>    Affects Versions: 3.0.0
>         Environment: Apache Maven 3.5.0,
> Oracle Java version: 1.8.0_144
>            Reporter: Andreas Hubold
>            Priority: Major
>         Attachments: example.tgz
>
>
> In the attached example project, module "usage" uses annotation {{@Example}}:
> {code}
> public interface Usage {
>   @Example String getEmail(); 
> }
> {code}
> which is defined in module "annotation" as:
> {code}
> @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
> @Retention(RetentionPolicy.RUNTIME)
> public @interface Example {
> }
> {code}
> Consequently, the pom.xml of module "usage" defines a compile-dependency to module "annotation"
but the dependency:analyze-only goal incorrectly reports this as unused dependency:
> {noformat}
> [main] [INFO] --- maven-dependency-plugin:3.0.0:analyze-only (analyze-dependencies) @
usage ---
> [main] [WARNING] Unused declared dependencies found:
> [main] [WARNING]    com.example:annotation:jar:1.0-SNAPSHOT:compile
> {noformat}
> This false positive is only reported if
> * the annotation is meta-annotated with target TYPE_USE + TYPE_PARAMETER
> * and the source.version/target.version of the compiler plugin for module "usage" is
1.8
> There's no false positive if the {{@Target}} meta-annotation is removed or if compiler's
source/target version is set to 1.7.



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