[MNG-3683] [regression] Help plugin does not work

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0-alpha-3
• Component/s: Plugins and Lifecycle
• Assignee: Benjamin Bentmann
• Reporter: Brett Porter
• Created: 25/Jul/08 06:48
• Updated: 14/Dec/10 05:24
• Resolved: 21/Aug/09 10:17

Description

The following command:

mvn help:describe -Dplugin=site

Gives the error:

[ERROR]

Maven encountered an error while configuring one of the mojos for your build.

Mojo:
Group-Id: org.apache.maven.plugins
Artifact-Id: maven-help-plugin
Version: 2.0.2
Mojo: describe
brought in via: Direct invocation

While building project:
Group-Id: org.apache.continuum
Artifact-Id: continuum-docs
Version: 1.2-SNAPSHOT
From file: /Users/brett/scm/continuum/continuum/continuum-docs/pom.xml

Here is the configuration it attempted to apply to the mojo:<configuration>
<artifactId>${artifactId}</artifactId>

<full>${full}</full>

<groupId>${groupId}</groupId>

<localRepository>${localRepository}</localRepository>

<medium>${medium}</medium>

<mojo>${mojo}</mojo>

<output>${output}</output>

<plugin>${plugin}</plugin>

<project>${project}</project>

<session>${session}</session>

<settings>${settings}</settings>

<version>${version}</version>
</configuration>

Error message:org.codehaus.plexus.component.configurator.ComponentConfigurationException: Invalid parameter supplied while setting 'org.apache.maven.plugin.MojoExecution@a2f216' to org.apache.maven.plugins.help.DescribeMojo.setMojo( java.lang.Class )

Issue Links

• depends upon: MNG-4312 Magic expressions injected by PluginParameterExpressionEvalutor conflict with expressions used by plugins to access system properties
• depends upon: MNG-4259 Create a new name for the current PluginManager and create a backward compatible PluginManager implementation in maven-compat which delegates to the new implementation