2008/2/24, Jason van Zyl <[EMAIL PROTECTED]>:
>
>  On 24-Feb-08, at 10:35 AM, Olivier Lamy wrote:
>
>  > Hi,
>  > Just to be sure mavenSession.getExecutionProperties() should be use.
>
>
> Yes, system properties are turned into execution properties in the CLI
>  and pushed into the session. So that from the embedder each invocation
>  can have it's own session and isolate execution properties. We just
>  need to try and keep this use case in mind as I see use inside the
>  IDEs starting to match the use from the command line in the next year.
>
>  We just need to determine the precedence universally and take the
>  values from the core instead of each plugin fiddling around with
>  system properties directly. I was currently thinking that properties
>  in the POM are looked at first and then overridden with execution
>  properties. Where execution properties have system properties which
>  can be overridden by CLI parameters. Currently system properties in
>  trunk are not neutered because when I did that a bunch of things
>  broke, mostly proxy related plugins. But this is the plan that I had
>  in might. If we centralize all the code we can decide ultimately what
>  the order of precedence is. But plugins fiddling with this is a bad
>  pattern we have to avoid.
>

I have changed System.getProperties to mavenSession.executionProperties.

Now we have to agree on the properties loading order.
If I look at the current maven-resources-plugin implementation which
use System props and not mavenSession.executionProperties, this ones
doesn't win.
IMHO, it's not correct because the user must wins with a cli input.
The component (maven-filtering) use the order defined in the documentation [1].

WDYT ?

Thanks,
--
Olivier

[1] http://people.apache.org/~olamy/staging-sites/maven-filtering/ .



>
>  > Right ?
>  >
>  > Thanks,
>  > --
>  > Olivier
>  >
>  > 2008/2/24, Jason van Zyl <[EMAIL PROTECTED]>:
>  >>
>  >> On 24-Feb-08, at 12:36 AM, Stephane Nicoll wrote:
>  >>
>  >>> I just hit the problem today with one of my colleague. Yes, System
>  >>> props should definitely win.
>  >>>
>  >>
>  >>
>  >> You also must start thinking about how system properties make it into
>  >> the execution environment. System properties wreak havoc in the
>  >> embedder and so you should never be dealing with System properties
>  >> directly in any plugin. Never. The change has been made in trunk
>  >> and I
>  >> can see if that change was propagated back to the branch but System
>  >> properties should get turned into execution properties (a simple
>  >> properties) that multiple threads being executed don't get nailed
>  >> by a
>  >> globally set system property.
>  >>
>  >>
>  >>> Thanks,
>  >>> Stéphane
>  >>>
>  >>> On Sat, Feb 23, 2008 at 11:28 PM, Olivier Lamy <[EMAIL PROTECTED]>
>  >>> wrote:
>  >>>> Now the question is "do we have to change this order ?".
>  >>>> Have a look at MRESOURCES-39 [1].
>  >>>>
>  >>>> Users complains about system properties (-D in the mvn cli) doesn't
>  >>>> win.
>  >>>> IMHO, system props should wins.
>  >>>>
>  >>>> This was the case with maven1 [2].
>  >>>>
>  >>>> Thougths ?
>  >>>>
>  >>>> Thanks,
>  >>>> --
>  >>>> Olivier
>  >>>>
>  >>>> [1] http://jira.codehaus.org/browse/MRESOURCES-39
>  >>>> [2] http://maven.apache.org/maven-1.x/reference/properties.html
>  >>>>
>  >>>> 2008/2/19, Olivier Lamy <[EMAIL PROTECTED]>:
>  >>>>
>  >>>>
>  >>>>> Yep sure.
>  >>>>> Currently, the new component use the same strategy as the
>  >>>>> maven-resources-plugin.
>  >>>>>
>  >>>>>
>  >>>>> --
>  >>>>> Olivier
>  >>>>>
>  >>>>> 2008/2/19, Stephane Nicoll <[EMAIL PROTECTED]>:
>  >>>>>> I guess we should have a look to the way this is done currently
>  >>>>>> to
>  >>>>>> avoid breaking the backward compat.
>  >>>>>>
>  >>>>>> On Feb 19, 2008 11:30 AM, Olivier Lamy <[EMAIL PROTECTED]> wrote:
>  >>>>>>> Sure, could be better.
>  >>>>>>> But we have to agree on the order :
>  >>>>>>> * System Properties
>  >>>>>>> * pom.properties
>  >>>>>>> * List of properties ( the method has a parameter which accept a
>  >>>>>>> List
>  >>>>>>> of String -> path properties files ) (war plugin use it to pass
>  >>>>>>> a list
>  >>>>>>> of properties file).
>  >>>>>>> * pom.filters
>  >>>>>>> * pom.build.filters
>  >>>>>>>
>  >>>>>>> ?
>  >>>>>>>
>  >>>>>>> --
>  >>>>>>> Olivier
>  >>>>>>>
>  >>>>>>>
>  >>>>>>> 2008/2/19, Stephane Nicoll <[EMAIL PROTECTED]>:
>  >>>>>>>
>  >>>>>>>> This one was very much expected, thanks for doing this.
>  >>>>>>>>
>  >>>>>>>> However, I think that we should use a first-win strategy,
>  >>>>>>>> otherwise
>  >>>>>>>> there is no way to control the actual value of a property.
>  >>>>>>>> First-win
>  >>>>>>>> strategy is mainly used everywhere in the war plugin and ease a
>  >>>>>>>> lot of
>  >>>>>>>> stuff
>  >>>>>>>>
>  >>>>>>>> Is there any reason you choose doing this?
>  >>>>>>>>
>  >>>>>>>> Thanks,
>  >>>>>>>> Stéphane
>  >>>>>>>>
>  >>>>>>>>
>  >>>>>>>> On Feb 19, 2008 10:17 AM, Olivier Lamy <[EMAIL PROTECTED]>
>  >>>>>>>> wrote:
>  >>>>>>>>> Hi,
>  >>>>>>>>> As you know some plugins made some filtering base on the code
>  >>>>>>>>> coming
>  >>>>>>>>> from the maven-resources-plugin.
>  >>>>>>>>> This means there are some copy and paste from the resources
>  >>>>>>>>> plugin
>  >>>>>>>>> source to other plugins.
>  >>>>>>>>> To prevent this, the code from  the resources plugin has been
>  >>>>>>>>> put in a
>  >>>>>>>>> plexus component (currently in shared sandbox [1]).
>  >>>>>>>>> A documentation has been started [2].
>  >>>>>>>>> It has been integrated in the maven-war-plugin trunk.
>  >>>>>>>>> Before calling a vote on a first alpha-1 release, I'd like to
>  >>>>>>>>> have
>  >>>>>>>>> some comments/thoughts on it.
>  >>>>>>>>>
>  >>>>>>>>> The final goal of this component should be : using it in all
>  >>>>>>>>> plugins
>  >>>>>>>>> which need filtering.
>  >>>>>>>>>
>  >>>>>>>>> Thanks,
>  >>>>>>>>> --
>  >>>>>>>>> Olivier
>  >>>>>>>>>
>  >>>>>>>>> [1] : 
> https://svn.apache.org/repos/asf/maven/sandbox/trunk/shared/maven-filtering/
>  >>>>>>>>> [2] : 
> http://people.apache.org/~olamy/staging-sites/maven-filtering/
>  >>>>>>>>>
>  >>>>>>>>> 
> ---------------------------------------------------------------------
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>  >>>>>>>>> For additional commands, e-mail: [EMAIL PROTECTED]
>  >>>>>>>>>
>  >>>>>>>>>
>  >>>>>>>>
>  >>>>>>>>
>  >>>>>>>>
>  >>>>>>>> --
>  >>>>>>>> Large Systems Suck: This rule is 100% transitive. If you build
>  >>>>>>>> one,
>  >>>>>>>> you suck" -- S.Yegge
>  >>>>>>>>
>  >>>>>>>> 
> ---------------------------------------------------------------------
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>  >>>>>>>>
>  >>>>>>>>
>  >>>>>>>
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>  >>>>>>>
>  >>>>>>>
>  >>>>>>
>  >>>>>>
>  >>>>>>
>  >>>>>> --
>  >>>>>> Large Systems Suck: This rule is 100% transitive. If you build
>  >>>>>> one,
>  >>>>>> you suck" -- S.Yegge
>  >>>>>>
>  >>>>>> ---------------------------------------------------------------------
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>  >>>>>>
>  >>>>>>
>  >>>>>
>  >>>>
>  >>>> ---------------------------------------------------------------------
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>  >>>>
>  >>>>
>  >>>
>  >>>
>  >>>
>  >>> --
>  >>> Large Systems Suck: This rule is 100% transitive. If you build one,
>  >>> you suck" -- S.Yegge
>  >>>
>  >>> ---------------------------------------------------------------------
>  >>> To unsubscribe, e-mail: [EMAIL PROTECTED]
>  >>> For additional commands, e-mail: [EMAIL PROTECTED]
>  >>>
>  >>
>  >>
>  >> Thanks,
>  >>
>  >> Jason
>  >>
>  >> ----------------------------------------------------------
>  >> Jason van Zyl
>  >> Founder,  Apache Maven
>  >> jason at sonatype dot com
>  >> ----------------------------------------------------------
>  >>
>  >> We all have problems. How we deal with them is a measure of our
>  >> worth.
>  >>
>  >> -- Unknown
>  >>
>  >>
>  >>
>  >>
>  >>
>  >> ---------------------------------------------------------------------
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>  >>
>  >>
>  >
>  > ---------------------------------------------------------------------
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>  >
>
>  Thanks,
>
>  Jason
>
>  ----------------------------------------------------------
>  Jason van Zyl
>  Founder,  Apache Maven
>  jason at sonatype dot com
>  ----------------------------------------------------------
>
>
> A party which is not afraid of letting culture,
>  business, and welfare go to ruin completely can
>  be omnipotent for a while.
>
>  -- Jakob Burckhardt
>
>
>
>
>
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