Maven 2.x Help Plugin

mvn help:describe returns the version that is specified in metadata instead of the one in the parent pom

Details

  • Type: Bug Bug
  • Status: Open Open
  • Priority: Major Major
  • Resolution: Unresolved
  • Affects Version/s: 2.0.1
  • Fix Version/s: Backlog
  • Component/s: describe
  • Labels:
    None
  • Environment:
    windows xp
    tested with mvn 2.0.8 & 2.0.9
  • Number of attachments :
    0

Description

mvn help:describe returns a different version than mvn help:effective-pom returns:

> mvn help:describe -Dplugin=surefire

...
[INFO] [help:describe]
[INFO] Plugin: 'org.apache.maven.plugins:maven-surefire-plugin:2.2'
-----------------------------------------------
Group Id:  org.apache.maven.plugins
Artifact Id: maven-surefire-plugin
Version:     2.2
Goal Prefix: surefire

However, when I run mvn help:effective-pom

I get

...
    <pluginManagement>
      <plugins>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.4.3</version>
          <configuration>
            <testFailureIgnore>true</testFailureIgnore>
            <includes>
              <include>**/*Test.java</include>
            </includes>
            <format>html</format>
          </configuration>
        </plugin>
      </plugins>
    </pluginManagement>
...

My pom structure is quite simple: just a parent pom.xml with the pluginmanagement section as above and a child pom using that. I have tested with both maven 2.0.8 and 2.0.9.

See the discussion here: http://www.nabble.com/Wrong-output-of-mvn-help%3Adescribe--td19168212.html

Activity

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Ha Ryon added a comment -

Same with Maven 2.1.0.

In <pluginManagement> of a Corporate Pom I use javadoc plugin 2.3, while latest is 2.5.
effective-pom returns 2.3. describe returns 2.5.

I don't think it's a bug. I think help:describe just describe the latest version.

When I type : mvn help:describe -Dplugin=org.apache.maven.plugins:maven-javadoc-plugin
I'm using a "artifact identifier" syntax which usually includes version (which I skipped). And I guess "LATEST" is used when I do not give explicit version.

It looks like to me that help:describe doesn't read pom.xml at all (except for repository locations?). It only operates on repository. right ?

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Ha Ryon added a comment - Same with Maven 2.1.0. In <pluginManagement> of a Corporate Pom I use javadoc plugin 2.3, while latest is 2.5. effective-pom returns 2.3. describe returns 2.5. I don't think it's a bug. I think help:describe just describe the latest version. When I type : mvn help:describe -Dplugin=org.apache.maven.plugins:maven-javadoc-plugin I'm using a "artifact identifier" syntax which usually includes version (which I skipped). And I guess "LATEST" is used when I do not give explicit version. It looks like to me that help:describe doesn't read pom.xml at all (except for repository locations?). It only operates on repository. right ?
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Keith David Winkler added a comment -

Still happens in version 2.2.1

Effective pom specifies resources plugin 2.3

"mvn help:describe -Dplugin=resources" downloads and lists help for version 2.4.1

In any case this FAQ entry seems wrong: http://maven.apache.org/general.html#plugin-version

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Keith David Winkler added a comment - Still happens in version 2.2.1 Effective pom specifies resources plugin 2.3 "mvn help:describe -Dplugin=resources" downloads and lists help for version 2.4.1 In any case this FAQ entry seems wrong: http://maven.apache.org/general.html#plugin-version
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Brett Porter added a comment -

Adding the plugin to your build works around this:

<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
</plugin>
</plugins>
</build>

Implicit ones don't work. I think this should be fixed in 3.0-alpha, but I'm noticing a further regression that it reports the latest release in both cases. This will need further investigation about where the cause is.

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Brett Porter added a comment - Adding the plugin to your build works around this: <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId> </plugin> </plugins> </build> Implicit ones don't work. I think this should be fixed in 3.0-alpha, but I'm noticing a further regression that it reports the latest release in both cases. This will need further investigation about where the cause is.
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Robert Scholte added a comment -

I've found a problem for M3.0.4:

org.apache.maven.plugin.internal.DefaultPluginManager.verifyPlugin(Plugin, MavenProject, Settings, ArtifactRepository)
...
        if ( plugin.getVersion() == null )
        {
            PluginVersionRequest versionRequest =
                new DefaultPluginVersionRequest( plugin, session.getRepositorySession(),
                                                 project.getRemotePluginRepositories() );
            plugin.setVersion( pluginVersionResolver.resolve( versionRequest ).getVersion() );
        }
...

The Model is not passed to the versionRequest, so the version is resolved based on repositories.

There's no clear description of what the verifyPlugin() should do, so it's hard to tell if we can just add the Model.

Show
Robert Scholte added a comment - I've found a problem for M3.0.4: org.apache.maven.plugin.internal.DefaultPluginManager.verifyPlugin(Plugin, MavenProject, Settings, ArtifactRepository) ... if ( plugin.getVersion() == null ) { PluginVersionRequest versionRequest = new DefaultPluginVersionRequest( plugin, session.getRepositorySession(), project.getRemotePluginRepositories() ); plugin.setVersion( pluginVersionResolver.resolve( versionRequest ).getVersion() ); } ... The Model is not passed to the versionRequest , so the version is resolved based on repositories. There's no clear description of what the verifyPlugin() should do, so it's hard to tell if we can just add the Model .

People

  • Assignee:
    Unassigned
    Reporter:
    Rintcius Blok
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Dates

  • Created:
    Updated: