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From "Christian Lewold (JIRA)" <j...@codehaus.org>
Subject [jira] (MNG-624) automatic parent versioning
Date Wed, 08 Feb 2012 08:37:06 GMT

    [ https://jira.codehaus.org/browse/MNG-624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=291110#comment-291110
] 

Christian Lewold commented on MNG-624:
--------------------------------------

Andrew - I don't know if I understand you correct. If I do a "mvn clean install" on my parent
project, all the modules are installed in the local repo with the correct property substituted.


But actually this is all a mess. I'm quite new to maven, but I'm not that impressed right
now, as such very basic things simply don't work. I mean face it - maven claims it wants to
reduce effort, and then people are forced to update version numbers in ALL poms every time
the version changes. 

Up to now I found nothing which cannot be achieved by well written ant scripts (central script
containing the logic with small scripts importing the central one). 

Ok this particular problem seems to be solved with Maven 3.1 - a problem which is like 7 years
old, and where noone seems to know when 3.1 finally arrives ..... 

Up to this point I try to live with the workaround, as I'm not in the mood to change like
20 pom.xml files every time I change the version (yes, yes there is the release plugin - but
that's still just a workaround for a messy concept) 
                
> automatic parent versioning
> ---------------------------
>
>                 Key: MNG-624
>                 URL: https://jira.codehaus.org/browse/MNG-624
>             Project: Maven 2 & 3
>          Issue Type: Improvement
>          Components: Inheritance and Interpolation
>            Reporter: Brett Porter
>            Assignee: Ralph Goers
>            Priority: Blocker
>             Fix For: 3.1
>
>         Attachments: MNG-624-maven-2.0.x-r507648.patch, MNG-624-tests.tar.gz
>
>   Original Estimate: 4 hours
>  Remaining Estimate: 4 hours
>
> (this may be bumped to 2.1 or even made WON't FIX as it is contentious - see MNG-521)
> currently, you have to specify the parent version when extending which makes a project
stand alone very easily, but has the drawback of being a maintainance problem when you start
development on a new version. Tools can help, but it would be nice not to have to rely on
them.
> One alternative is to allow the parent version to be omitted, and when it is it is assumed
you want the latest. The parent is used from the reactor or the universal source directory.
IT may also be read from a LATEST in the repository though this is contentious - it may be
better to simply fail in that environment and require builds be in a known checkout structure
for building individual projects.
> This also introduces the need for tool support to populate the version on release and
deployment for reproducibility.

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