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To: "Maven Developers List" <dev@maven.apache.org>
Subject: Re: Bug or feature: executing plugin without version
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Date: Sun, 13 Dec 2015 23:23:31 +0100
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From: "Robert Scholte" <rfscholte@apache.org>
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Hi Paul,

with your pom.xml I get 2.10 as expected, with both G:A:goal and  
prefix:goal.
Tested with M3.0.5 and M3.1.1 and 3.3.3
Sorry, can't reproduce.

Robert

Op Thu, 10 Dec 2015 17:50:39 +0100 schreef Paul Benedict  
<pbenedict@apache.org>:

> Here is the POM:
>
> <project xmlns="http://maven.apache.org/POM/4.0.0"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
> http://maven.apache.org/maven-v4_0_0.xsd">
>
>   <modelVersion>4.0.0</modelVersion>
>   <groupId>z</groupId>
>   <artifactId>ztest</artifactId>
>   <version>0.1-SNAPSHOT</version>
>   <packaging>pom</packaging>
>
>   <build>
>     <pluginManagement>
>       <plugins>
>         <plugin>
>           <groupId>org.apache.maven.plugins</groupId>
>           <artifactId>maven-dependency-plugin</artifactId>
>           <version>2.10</version>
>         </plugin>
>       </plugins>
>     </pluginManagement>
>   </build>
>
> </project>
>
> With JDK 6 on my box, I am using Maven 3.1.1.
>
> Running this:
> mvn -X org.apache.maven.plugins:maven-dependency-plugin:tree
>
> I get this:
> [DEBUG] Configuring mojo
> 'org.apache.maven.plugins:maven-dependency-plugin:2.8:tree' with basic
> configurator
>
> It should be 2.10 if the POM was consulted.
>
> PS: I did a little archaeological digging. Evidently, the Super POM for
> 3.1.1 locks the Dependency Plugin to 2.8 [1], which explains why 2.8 is
> being selected. There is also this curious comment in there (and still
> exists in 3.3.9):
> <!-- They are kept for the moment as they are very unlikely to conflict
> with lifecycle mappings (MNG-4453) -->
>
> It seems to me this is a bug: the Super POM is being preferred over the
> Plugin Management of my POM.
>
> [1] https://maven.apache.org/ref/3.1.1/maven-model-builder/super-pom.html
>
> Cheers,
> Paul
>
> On Thu, Dec 10, 2015 at 7:25 AM, Adrien Rivard <adrien.rivard@gmail.com>
> wrote:
>
>> Hi,
>>
>> It works correctly for me, tested with :
>>
>>   <build>
>> <pluginManagement>
>> <plugins>
>> <plugin>
>> <groupId>org.codehaus.mojo</groupId>
>> <artifactId>versions-maven-plugin</artifactId>
>> <version>2.1</version>
>> </plugin>
>> </plugins>
>> </pluginManagement>
>> </build>
>>
>>
>> and "mvn
>> org.codehaus.mojo:versions-maven-plugin:display-dependency-updates"
>>
>>
>> Are you sure you did'nt miss something ? like wrong artifactId/groupId
>> maybe ?
>>
>>
>>
>> On Wed, Dec 9, 2015 at 9:41 PM, Paul Benedict <pbenedict@apache.org>
>> wrote:
>>
>> > groupId:artifactId:goal
>> >
>> > Cheers,
>> > Paul
>> >
>> > On Wed, Dec 9, 2015 at 2:38 PM, Robert Scholte <rfscholte@apache.org>
>> > wrote:
>> >
>> > > I'd say bug. Are you using prefix:goal or groupId:artifactId:goal ?
>> > >
>> > > Robert
>> > >
>> > > Op Wed, 09 Dec 2015 17:19:32 +0100 schreef Paul Benedict <
>> > > pbenedict@apache.org>:
>> > >
>> > >
>> > > Scenario: I executed a plugin goal on command line and specified a
>> > version
>> > >> (1.5). I then did it again without specifying a version. For the
>> latter,
>> > >> Maven chose the latest version (1.6) from my remote repository.
>> > >>
>> > >> I was curious about the version selection; so I edited my POM and
>> added
>> > a
>> > >> /build/pluginManagement/plugin to lock down the version. When I
>> executed
>> > >> without the version on the command line again, the latest (1.6) was
>> > still
>> > >> selected.
>> > >>
>> > >> Don't you think that when I omit the version on the command line,  
>> if
>> the
>> > >> plugin version is specified in the POM, it should use the
>> configuration?
>> > >> Is
>> > >> this a bug or an intended feature? It's at least very surprising.
>> > >>
>> > >> I need to execute a particular version of a plugin in a shell  
>> script,
>> > but
>> > >> I
>> > >> don't want to specify the version in the script. I'd rather have it
>> > locked
>> > >> in the POM but obviously the POM is not consulted in this case.  
>> WDYT?
>> > >>
>> > >> Cheers,
>> > >> Paul
>> > >>
>> > >
>> > >  
>> ---------------------------------------------------------------------
>> > > To unsubscribe, e-mail: dev-unsubscribe@maven.apache.org
>> > > For additional commands, e-mail: dev-help@maven.apache.org
>> > >
>> > >
>> >
>>
>>
>>
>> --
>> Adrien Rivard

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