[jira] (MNG-5347) Support expressions for plugin parameters

["Ondrej Zizka (JIRA)" <ji...@codehaus.org>]

    [ https://jira.codehaus.org/browse/MNG-5347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=313328#comment-313328 ] 

Ondrej Zizka commented on MNG-5347:
-----------------------------------

This is rather a question of supporting expression language in pom.xml's a whole.
Probably, the expresion would need to be whole surrounded by delimiters, e.g. ${foo or bar}.

You might also want to check related Karel Piwko's EL profile activator: https://github.com/kpiwko/el-profile-activator-extension .
                
> Support expressions for plugin parameters
> -----------------------------------------
>
>                 Key: MNG-5347
>                 URL: https://jira.codehaus.org/browse/MNG-5347
>             Project: Maven 2 & 3
>          Issue Type: Wish
>          Components: General
>    Affects Versions: 3.0.4
>         Environment: mistria@mistria--rh:~$ mvn -version
> Apache Maven 3.0.4 (r1232337; 2012-01-17 09:44:56+0100)
> Maven home: /home/mistria/apps/apache-maven-3.0.4
> Java version: 1.6.0_24, vendor: Sun Microsystems Inc.
> Java home: /usr/lib/jvm/java-6-openjdk-amd64/jre
> Default locale: en_US, platform encoding: UTF-8
> OS name: "linux", version: "3.2.0-30-generic", arch: "amd64", family: "unix"
>            Reporter: Mickael Istria
>
> Use-case:
> I want to give as input of my surefire-plugin
> {code}
> <configuration>
>     <skip>${skipTests} || ${skipDownloadRuntimes}</skip>
> <configuration>
> {code}
> This won't work because the expressions are not evaluated. Boolean arguments in plugin are set to something like Boolean.parseBoolean, which is quite limited.
> Instead, we could think of introducing an expression language, such as Groovy, that would allow expressions as parameters for plugins.
> Then let's say skipTests=false and skipDownloadRuntimes=true, Maven would first replace "${skipTests} || ${skipDownloadRuntimes}" by "false || true" and then this evaluator would evaluate that to "false", and skip will receive the value "false".
> This would for sure make maven less verbose in some cases.

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