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From Jeromy Evans <>
Subject Re: [VOTE] Bring Convention plugin into trunk and deprecate Zero Config
Date Fri, 16 May 2008 06:30:14 GMT
Jeromy Evans wrote:
> I wouldn't rush into this decision.
> Users of the REST plugin require @Namespace, @Result, etc 
> annotations.  Creating a duplicate set of annotations with the same 
> purpose is not sensible.
> It's appropriate that the REST plugin has a dependency on the plugin 
> that auto-populates the Configuration, despite the contrary statement 
> on the plugins page.
> Merging the REST plugin with Convention is also not possible as the 
> implementation of ActionInvocation and ActionMapper are entirely 
> different (the conventions cannot currently be mixed).
> There are several issues here:
>  - creating a Configuration (via XML, via Annotation)
>  - ActionMapping (no problems here, each plugin sets up their own)
>  - ActionInvocation (standard or RESTful; they are incompatible)
>  - handling unknowns
> One situation could be that Configuration is separate from Convention; 
> so the developer can choose how the Configuration is setup and then 
> choose which mapping & invocation, and unknown handling approach to 
> use. However that would require another refactoring.
> I think making REST dependent on the Convention plugin is the way to 
> go, such that the Configuration is created by Convention (but 
> customized for REST *Controller class) and extended with the REST 
> ActionMapper and RestActionInvocation.

On further thought, if it is possible to split up the Convention plugin, 
then it could be solved like so:
 - Zero Configuration: for all annotations relating to the setup of 
Configuration (merge from Convention)
 - CodeBehind: implements action mapping, invocation, unknown handling, 
index handling (the other half of Convention)
 - REST alternative implementation of action mapping, invocation, 
unknown handling

Ideally then REST can be used with ZeroConf or XMLConf, or CodeBehind 
used with ZeroConf or XMLConf.  Sweet.

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