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http://jira.codehaus.org/browse/MNG-4819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=235638#action_235638
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Jonathan Pearson commented on MNG-4819:
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I recommend going with the second of the two output choices (if the child
supplies settings for the list, they override the entire parent list and not
just those properties that are specified explicitly by the child).
> Inheritance Error in Object List Configuration for Custom Plugin
> ----------------------------------------------------------------
>
> Key: MNG-4819
> URL: http://jira.codehaus.org/browse/MNG-4819
> Project: Maven 2 & 3
> Issue Type: Bug
> Components: Inheritance and Interpolation
> Affects Versions: 2.2.1
> Environment: Windows XP SP3, running under Cygwin bash shell
> Reporter: Jonathan Pearson
> Attachments: bugdemo.tgz, build.log
>
>
> When a parent defines an object list in a plugin configuration, and then a
> child of that parent also defines an object list for the same plugin leaving
> some values undefined (so as to use defaults), the object list is loaded into
> the plugin in an unpredictable manner, sometimes using parent-defined
> properties instead of defaults, and sometimes not.
> The attached plugin/parent/child projects produce this incorrect output:
> $ mvn inherit_bug_demo:bugdemo
> ...
> [INFO] Configuration: [InheritanceBugDemoMojo: objects='[[DemoObject:
> prop1='Child Object 1 Property 1', prop2='Property 2'], [DemoObject:
> prop1='Parent Object 1 Property 1', prop2='Child Object 2 Property 2']]']
> The expected output would either be:
> [INFO] Configuration: [InheritanceBugDemoMojo: objects='[[DemoObject:
> prop1='Child Object 1 Property 1', prop2='Parent Object 1 Property 2'],
> [DemoObject: prop1='Parent Object 1 Property 1', prop2='Child Object 2
> Property 2'], [DemoObject: prop1='Parent Object 3 Property 1', prop2='Parent
> Object 3 Property 2]]']
> Or:
> [INFO] Configuration: [InheritanceBugDemoMojo: objects='[[DemoObject:
> prop1='Child Object 1 Property 1', prop2='Property 2'], [DemoObject:
> prop1='Property 1', prop2='Child Object 2 Property 2']]']
> See attached build log, demonstration plugin, and parent/child project for
> details.
> Usage:
> $ cd inherit_bug_demo
> $ mvn deploy
> $ cd ../child
> $ mvn inherit_bug_demo:bugdemo
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