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https://issues.apache.org/jira/browse/MNG-7038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17702681#comment-17702681
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ASF GitHub Bot commented on MNG-7038:
-------------------------------------
gnodet commented on code in PR #1061:
URL: https://github.com/apache/maven/pull/1061#discussion_r1142090120
##########
maven-model-builder/src/site/apt/index.apt:
##########
@@ -192,6 +192,10 @@ Maven Model Builder
*----+------+------+
| <<<maven.home>>> | The path to the current Maven home. |
<<<$\{maven.home\}>>> |
*----+------+------+
+| <<<maven.rootdir>>> | the directory containing the root <<<pom.xml>>> file
of a multi module project, in a single module project this is the same as
<<<project.basedir>>> | <<<$\{maven.rootdir\}>>> |
+*----+------+------+
+| <<<maven.topdir>>> | the directory containing the top-level <<<pom.xml>>> in
this reactor build | <<<$\{maven.topdir\}>>> |
+*----+------+------+
Review Comment:
I agree, I'll remove all references to `maven.rootdir` and `maven.topdir`.
It makes sense to keep `session.rootdir` and `session.topdir` because they are
available from those objects.
I'd rather set them as `session.rootdir` and `session.topdir` in the request
system properties. That would allow using them in the context of [arguments
interpolation / `MNG-6303`](https://github.com/apache/maven/pull/1062).
> 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
> Fix For: Issues to be reviewed for 4.x
>
>
> 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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