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https://issues.apache.org/jira/browse/MNG-8095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17836645#comment-17836645
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Tamas Cservenak commented on MNG-8095:
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Rel notes says specifically "implemented interpolation for configuration and
command line".
So, in 3.9.x this is NOT a property (so cannot be refd from POM etc), ONLY from
command line and .mvn/maven.config.
In 4.0 this IS fully fledged property, and can be referenced from POM as well.
> Usage of session.rootDirectory / session.topDirectory does not work
> -------------------------------------------------------------------
>
> Key: MNG-8095
> URL: https://issues.apache.org/jira/browse/MNG-8095
> Project: Maven
> Issue Type: Bug
> Components: Core
> Affects Versions: 3.9.2, 3.9.3, 3.9.4, 3.9.5, 3.9.6
> Reporter: Karl Heinz Marbaise
> Priority: Minor
>
> I have setup a project which uses the following parts
> (https://maven.apache.org/docs/3.9.2/release-notes.html)
> * {{${session.topDirectory}}}
> * {{${session.rootDirectory}}}
> * {{${project.rootDirectory}}}
> but unfortately they are not being replaced during the run of the project...
> A small excerpt from the project... using the following simple configuration:
> {code:xml}
> <plugin>
> <groupId>com.soebes.maven.plugins</groupId>
> <artifactId>echo-maven-plugin</artifactId>
> <version>0.5.0</version>
> <executions>
> <execution>
> <phase>initialize</phase>
> <goals>
> <goal>echo</goal>
> </goals>
> <configuration>
> <echos>
> </echo>
> <echo>project.rootDirectory: '${project.rootDirectory}'</echo>
> <echo>session.rootDirectory: '${session.rootDirectory}'</echo>
> <echo>session.topDirectory: '${session.topDirectory}'</echo>
> <echo>project.basedir: '${project.basedir}'</echo>
> <echo>project.build.directory:
> '${project.build.directory}'</echo>
> </echo>
> </echos>
> </configuration>
> </execution>
> </executions>
> </plugin>
> {code}
> My expectation is that during the build the values should be replaced with
> the appropriate values which works with Maven 4 (Tested with Maven
> 4-alpha-13) like this:
> {code}
> [INFO] --- echo:0.5.0:echo (default) @ sub-mod-2 ---
> [INFO] =========================================================
> [INFO] project.rootDirectory: '/projects/props'
> [INFO] session.rootDirectory: '/projects/props'
> [INFO] session.topDirectory: '/projects/props'
> [INFO] project.basedir: '/projects/props/sub-mod-2'
> [INFO] project.build.directory: '/projects/props/sub-mod-2/target'
> [INFO] =========================================================
> {code}
> But the run with Maven 3.9.X it looks like this:
> {code}
> [INFO] --- echo:0.5.0:echo (default) @ sub-mod-2 ---
> [INFO] =========================================================
> [INFO] project.rootDirectory: '${project.rootDirectory}'
> [INFO] session.rootDirectory: '${session.rootDirectory}'
> [INFO] session.topDirectory: '${session.topDirectory}'
> [INFO] project.basedir: '/projects/props/sub-mod-2'
> [INFO] project.build.directory: '/projects/props/sub-mod-2/target'
> [INFO] =========================================================
> {code}
> I have setup a full working example here:
> https://github.com/khmarbaise/maven-bugs/tree/master/MNG-8095
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