[jira] [Commented] (MNG-7038) Introduce public property to point to a root directory of (multi-module) project

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

    [ https://issues.apache.org/jira/browse/MNG-7038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17244729#comment-17244729 ] 

Konrad Windszus commented on MNG-7038:
--------------------------------------

Just FTR: There is a plugin which is able to set project property values to directory paths (https://github.com/jdcasey/directory-maven-plugin). This can also calculate the toplevel base dir (which is equivalent to the internal property {{maven.multiModuleProjectDirectory}}).

> Introduce public property to point to a root directory of (multi-module) project
> --------------------------------------------------------------------------------
>
>                 Key: MNG-7038
>                 URL: https://issues.apache.org/jira/browse/MNG-7038
>             Project: Maven
>          Issue Type: Improvement
>            Reporter: Envious Guest
>            Priority: Major
>
> This is a request to expose a property *maven.multiModuleProjectDirectory* which is currently internal (or introduce a brand new one with analogous functionality).
>  * For a single-module project, its value should be same as *project.basedir*
>  * For multi-module project, its value should point to a project.basedir of a root module
> Example:
> multi-module // located at /home/me/sources
>  +- module-a
>  +- module B
> Sample multi-module/pom.xml: 
> {{<project>}}
>  {{    <parent>}}
>  {{        <groupId>com.acme</groupId>}}
>  {{        <artifactId>corp-parent</artifactId>}}
>  {{        <version>1.0.0-RELEASE</version>}}
>  {{    </parent>}}
>  {{    <groupId>com.acme</groupId>}}
>  {{        <artifactId>multi-module</artifactId>}}
>  {{        <version>0.5.2-SNAPSHOT</version>}}
>  {{    <modules>}}
>  {{        <module>module-a</module>}}
>  {{        <module>module-b</module>}}
>  {{    </modules>}}
>  {{</project>}}
> The property requested should return /home/me/sources/multi-module, regardless of whether it's referenced in any of the child modules (module-a, module-b) or in multi-module.
> Note that multi-module itself has parent (e.g. installed in a local repository), so the new property should be smart enough to detect it and still point to /home/me/sources/multi-module instead of the local repository where the corp-parent is installed.
> The use-case for such a property could be to have a directory for combined report of static analysis tools. Typical example - jacoco combined coverage reports.



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