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https://issues.apache.org/jira/browse/VFS-337?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ralph Goers resolved VFS-337.
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    Resolution: Invalid

I suspect this issue was meant to refer to AbstractFileObject instead of 
AbstractFileName. AbstractFileName does not accept a FileName in the 
constructor while AbstractFileObject does. setType in AbstractFileName is only 
called from one place - setFiletype in AbstractFileObject while setFileType and 
injectType are called from many places.

> AbstractFileName ctor accepts FileName as a parameter, but actually requires 
> AbstractFileName
> ---------------------------------------------------------------------------------------------
>
>                 Key: VFS-337
>                 URL: https://issues.apache.org/jira/browse/VFS-337
>             Project: Commons VFS
>          Issue Type: Bug
>    Affects Versions: 1.0
>            Reporter: Sebb
>
> The AbstractFileName constructor accepts FileName as a parameter, but 
> actually requires an AbstractFileName.
> Anything else will generate a ClassCastException.
> The reason for the cast is to allow access to the package-protected method 
> void AbstractFileName#setType(FileType type)
> Many of the AbstractFileName methods rely on being able to invoke the setType 
> method, so perhaps the parameter should be changed accordingly?
> This will change the API and require changes to subclasses.
> I'll add Javadoc to document the restriction.

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