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From "Robert Scholte (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MNG-5900) early interpolation: support ${this.*} as expression
Date Fri, 01 Apr 2016 21:54:25 GMT

    [ https://issues.apache.org/jira/browse/MNG-5900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15222398#comment-15222398
] 

Robert Scholte commented on MNG-5900:
-------------------------------------

What's misleading about it? It will be replaced with its value within this pom.xml, whereas
{{$\{project.*\}}} will be replaced with the effective project value. The comparison with
Java's 'this' is quite good, hence that's why I suggested it.
I don't like the idea of different delimiters, it'll make parsing extra complex and I don't
see advantage of it. Introducing a new variable makes more sense and {{this}} has been the
best name so far.

> early interpolation: support ${this.*} as expression
> ----------------------------------------------------
>
>                 Key: MNG-5900
>                 URL: https://issues.apache.org/jira/browse/MNG-5900
>             Project: Maven
>          Issue Type: New Feature
>          Components: Inheritance and Interpolation
>            Reporter: Robert Scholte
>             Fix For: Issues to be reviewed for 4.x
>
>
> Right now we have $\{project.\*} which always interpolates values based on the final
project: "classical" interpolation is "late" interpolation. So it is not possible that parent
poms can lock values, ie avoid child poms override. By adding $\{this} for "early" interpolation,
it will be possible to have intermediate interpolation.
> If a pomfile depends on a parent, that parent will first resolve all $\{this.\*} values
for itself. Once the fully inherited pom is there, all $\{project.\*} will be resolved. 



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