[ http://jira.codehaus.org/browse/MNG-715?page=all ]
John Casey closed MNG-715:
--------------------------
Resolution: Fixed
> find a scalable way to add deprecation information to parameter expressions
> ---------------------------------------------------------------------------
>
> Key: MNG-715
> URL: http://jira.codehaus.org/browse/MNG-715
> Project: Maven 2
> Type: Improvement
> Components: maven-plugin-descriptor, maven-core
> Versions: 2.0-alpha-3
> Reporter: John Casey
> Assignee: John Casey
> Fix For: 2.0-beta-1
>
>
> Currently, most aspects of mojo development accommodate some sort of
> deprecation process. Methods can be deprecated using standard Java language
> support, and any given mojo can declare one of its parameters as deprecated.
> However, we do not currently support deprecation of the parameters available
> to mojo developers.
> A case in point is ${project.build.resources}. Ideally, we should not be
> modifying the underlying Model at runtime; doing so will compromise our
> ability to write a fully resolved POM to disk (which should not encompass
> runtime additions, which could be dependent on a profile's activation) and
> similar functionality. Instead, to add resources and then access them, a mojo
> should use ${project.resources} and MavenProject.addResource(..) (both new).
> The most graceful way to encourage this switch would be to deprecate
> ${project.build.resources} from the parameter evaluator, and remove it later.
> Currently, this requires case-by-case exceptions to be coded directly into
> the PluginParameterExpressionEvaluator, which is not very elegant.
> One possible solution might be to simply put a list of deprecated expressions
> into the evaluator, and also maybe a list of banned expressions. First step
> in evaluation could be to check vs. these lists, and give appropriate
> warnings/errors when detected.
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