[jira] Commented: (MAVEN-1656) Doco that explains the protocols required to allow maven.xml of any plugin.jelly to inject orm retrieve values from another plugin

["Andy Glick (JIRA)" <ji...@codehaus.org>]

    [ http://jira.codehaus.org/browse/MAVEN-1656?page=comments#action_43847 ] 

Andy Glick commented on MAVEN-1656:
-----------------------------------

The author can't write too well, and so the title is a bit off - it ought to read: Doco that explains the protocols required to allow maven.xml or any plugin.jelly to inject values into or retrieve values from another plugin

> Doco that explains the protocols required to allow maven.xml of any plugin.jelly to inject orm retrieve values from another plugin
> ----------------------------------------------------------------------------------------------------------------------------------
>
>          Key: MAVEN-1656
>          URL: http://jira.codehaus.org/browse/MAVEN-1656
>      Project: maven
>         Type: Bug
>   Components: documentation
>     Versions: 1.1-beta-1
>  Environment: All
>     Reporter: Andy Glick

>
>
> Brett recently posted a suggestion to someone who asked how to access the contents of "plugin a" from the context of "plugin b" or from maven.xml. Brett stated that "plugin a" would have to be initialized before it could be accessed, and that from what I could understand he recommended 1 or 2 ways to do that:
> 1) reference the artifact plugin's namespace in the project tag 
> 2) specify <j:set target="plugin-name" scope="parent" var="some.plugin.var" value="some.value"/>  (I think that this is the proper syntax, but I'm not sure :-).
> Thierry Lach, who asked the question this time around, reported that using the artifact namespace didn't work in his instance, but that setting the scope to parent did. I'm hoping that we can put together a fairly comprehensive explanation about what is going on here, and if that means explaining why the project gave up on Jelly and switched to M2, then so be it.
> See http://news.gmane.org/gmane.comp.jakarta.turbine.maven.user for the postings
> Given that during the last couple of months Vincent Massol recommended that people use the now deprecated <dependency-handle> mechanism on the mavenbook.org site (see Tip #2), I should think that there ought to be a priority on documenting this issue in an obvious place, probably the FAQ, but also on the Maven Jelly tags get and set entries. 
> If this is actually explicitly documented somewhere, I'm sorry to have wasted anyone's time. I have seen several plugins that have successfully used the artifact namespace tag, so there must be some way that people have learned this. I simply wish that I knew how they had done so. ;-) 
> I'm willing to write the doco if someone would explain the details.

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