Is there any documentation on the details of context resolution?

> -----Original Message-----
> From: Eric Giguere [mailto:[EMAIL PROTECTED]
> Sent: Thursday, June 03, 2004 11:50 AM
> To: Maven Users List
> Subject: Re: Jelly variables
>
>
> Hi Chuck
>
> Chuck Daniels wrote:
>
> >This leads me to another question, as I am relatively new to
> Maven.  I have
> >also noticed expressions like ${context.getVariable('some.variable')}.  I
> >assume this retrieves the value of the variable in the current context
> >versus what
> >${pom.getPluginContext('plugin-context').getVariable('some.variab
> le')} does.
> >However, how does ${context.getVariable('some.variable')} differ from the
> >simpler expression ${some.variable}?
> >
> >
> I would say (not 100% sure though) that the same principle applies. If
> you call this from one of your project goals, it shouldn't do a
> difference at all. If you write some jelly code in a plugin though, that
> may be a different issue. And even then, I'm not 100% sure that it will
> change something since the plugin context get initialized (for maven
> variables anyway) with values that are supplied by the project itself
> (like basedir, maven.build.dest and others).
>
> Context resolution is more an issue if you to play with plugin's
> variables or properties in you project or even in another plugin.
>
> The issue can become even more interesting in a multi-project build.
> When running a maven build on multiple projects, all "standard" maven
> properties and variables get new values (new contexts) for every single
> project, even if its built in one shot.
>
> Quite powerfull indeed.
>
> Eric.
>
> >
> >
> >>-----Original Message-----
> >>From: Eric Giguere [mailto:[EMAIL PROTECTED]
> >>Sent: Wednesday, June 02, 2004 7:22 AM
> >>To: Maven Users List
> >>Subject: Re: Jelly variables
> >>
> >>
> >>Hi
> >>
> >>Chuck Daniels wrote:
> >>
> >>
> >>
> >>>I see
> ${pom.getPluginContext('plugin-name').getVariable('variable')} used
> >>>frequently.  However, I also see that Project.getPluginContext is
> >>>deprecated.  I believe that the pom bean is a Project, right?
> >>>
> >>>
> >>>
> >>Right, pom is the Project bean.
> >>
> >>
> >>
> >>> If so, what
> >>>should be used in place of pom.getPluginContext?
> >>>
> >>>
> >>>
> >>Yep, you're absolutely right. The new tag is :
> >>
> >><maven:pluginVar />
> >>
> >>But it seems that this will also be deprecated (maybe already is)
> >>and replace by :get/:set type.
> >>This replacement was suppose to take effect in RC3...
> >>
> >>
> >>
> >>
> >>>The javadoc for the method
> >>>says to use the tag instead, but doesn't say which tag.
> >>>
> >>>
> >>Further, there are
> >>
> >>
> >>>cases where using a tag is not possible because an expression is
> >>>
> >>>
> >>required.
> >>
> >>
> >>>Anybody know what should be done or should we simply continue using
> >>>pom.getPluginContext?
> >>>
> >>>
> >>>
> >>>
> >>I personnaly continue to use it until the tag issue is resolved once and
> >>for all. Deprecation should live for at least one version, so I think we
> >>may be ok for a while.
> >>
> >>Eric.
> >>
> >>
> >>
> >>>
> >>>
> >>>>-----Original Message-----
> >>>>From: Eric Giguere [mailto:[EMAIL PROTECTED]
> >>>>Sent: Tuesday, June 01, 2004 2:03 PM
> >>>>To: Maven Users List
> >>>>Subject: Re: Jelly variables
> >>>>
> >>>>
> >>>>Hi Jon
> >>>>
> >>>>I'll give a try to explain the behavior.
> >>>>
> >>>>Plugins.. When executing, all of them have a context that is built up
> >>>>live on a specific project. For every property or variable
> that a plugin
> >>>>declares, you must call a method of the pom bean to get the
> actual value
> >>>>for the property (or variable) that the plugin uses while
> executing. My
> >>>>guess with maven.final.name, since its a project variable, is set to
> >>>>snapshotSignature only in the plugin's context. So its never
> really set
> >>>>back to the original value, it just didn't ever change, in your
> >>>>project's context anyway.
> >>>>
> >>>>Did you try using this snapshotSignature value directly in
> your project?
> >>>>If its empty, ask the plugin for its value, maybe it'll be
> available in
> >>>>your post goal using this call:
> >>>>${pom.getPluginContext('plugin-name').getVariable('variable')
> >>>>
> >>>>just guessing here...
> >>>>
> >>>>Hope it helps
> >>>>Eric.
> >>>>
> >>>>
> >>>>STRAYER, JON (SBCSI) wrote:
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>I have a deploy goal in my maven.xml that uses the artifact
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>plugin.  When I
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>use it to deploy the results of a jar:jar everything works fine.
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>When I use
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>it to deploy a snapshot jar it tries to deploy the normal jar.
> >>>>>
> >>>>>My goal is here:
> >>>>> <goal name="deploy">
> >>>>>    <artifact:deploy
> >>>>>    artifact="${maven.build.dir}/${maven.final.name}.jar"
> >>>>>    type="jar"
> >>>>>    project="${pom}"
> >>>>>    />
> >>>>> </goal>
> >>>>>
> >>>>>As you can see, I'm using maven.final.name for the name of the
> >>>>>
> >>>>>
> >>jar.  The
> >>
> >>
> >>>>>jar:snapshot goal sets this varaiable to ${snapshotSignature}.
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>But by the
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>time my postGoal executes it's back to the name of the normal jar.
> >>>>>
> >>>>>My questions are:
> >>>>>1.  Is there a variable that will be available during the post
> >>>>>
> >>>>>
> >>goal that
> >>
> >>
> >>>>>contains the name of the jar?
> >>>>>2.  What is setting maven.final.name back to the default value?
> >>>>>
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> >>>
> >>>
> >>>
> >>>
> >>
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