[jira] [Closed] (WICKET-4617) ResourceStreamLocator vs ResourceFinder

["Carl-Eric Menzel (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WICKET-4617?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Carl-Eric Menzel closed WICKET-4617.
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       Resolution: Fixed
    Fix Version/s: 6.0.0-RC1

All done and pushed to master. I'll add something to the migration page in the wiki next.
                
> ResourceStreamLocator vs ResourceFinder
> ---------------------------------------
>
>                 Key: WICKET-4617
>                 URL: https://issues.apache.org/jira/browse/WICKET-4617
>             Project: Wicket
>          Issue Type: Bug
>    Affects Versions: 6.0.0-beta2, 1.5.7
>            Reporter: Carl-Eric Menzel
>            Assignee: Carl-Eric Menzel
>             Fix For: 6.0.0-RC1
>
>
> I'm a bit confused by the responsibilities of ResourceFinder vs ResourceStreamLocator. Looking around in the code, I found the following:
> - IResourceFinder is apparently only implemented via its extension interface IResourcePath. Its two implementations Path and WebApplicationPath look through a list of filesystem folders for files.
> - ResourceStreamLocator does two things:
>   - it loads resources, either via an IResourceFinder (which only finds filesystem resources) or via the classloader (it does this itself).
>   - it uses a ResourceNameIterator to generate all possible filename variations based on locale and style and then tries to load one of them via the above mechanisms.
> Is this correct?
> If so, I think we have some mixed-up responsibilities here. I propose the following:
> - add a third IResourcePath implementation (e.g. ClassloaderPath) that handles loading of resources in classpaths. It should be able to try multiple paths (e.g. "/", "META-INF/resources" etc).
> - Instead of a single ResourceFinder, Application should have a list of them, by default containing WebApplicationPath (today's default) and the new ClassloaderPath.
> - ResourceStreamLocator should not do any loading on its own at all and just use the ResourceFinders defined in this new list in Application.
> This would also get rid of the hard-coded "META-INF/resources" lookup that currently is done in ResourceStreamLocator (I'll write a second ticket about that, it's causing us some problems).
> I think this could still be done within 6.0. Objections?

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