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http://jira.codehaus.org/browse/MNG-3131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brett Porter updated MNG-3131:
------------------------------

    Fix Version/s: 2.0.x

> Error message is misleading if a missing plugin parameter is of a type like 
> List
> --------------------------------------------------------------------------------
>
>                 Key: MNG-3131
>                 URL: http://jira.codehaus.org/browse/MNG-3131
>             Project: Maven 2
>          Issue Type: Bug
>            Reporter: Dennis Lundberg
>             Fix For: 2.0.x
>
>
> Here is a sample output I got when I was working on the changes-plugin:
> {code}
> [INFO] One or more required plugin parameters are invalid/missing for 
> 'changes:announcement-mail'
> [0] inside the definition for plugin: 'maven-changes-plugin'specify the 
> following:
> <configuration>
>   ...
>   <smtpHost>VALUE</smtpHost>
> </configuration>.
> [1] inside the definition for plugin: 'maven-changes-plugin'specify the 
> following:
> <configuration>
>   ...
>   <toAddresses>VALUE</toAddresses>
> </configuration>.
> {code}
> Notice the second parameter toAdresses. It is of the type List, so the 
> correct configuration would be something like this
> {code}
> <configuration>
>   ...
>   <toAddresses>
>     <toAddress>VALUE</toAddress>
>   </toAddresses>
> </configuration>.
> {code}
> I haven't found where in the code base the handling of List/Map/Array 
> parameters is. That code could probably be borrowed/reused in 
> maven-core/src/main/java/org/apache/maven/plugin/PluginParameterException.java
>  which is the class responsible for formating the above messages.

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