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From "Bernd Eckenfels" <>
Subject [VFS] canCreateFileSystem("directory.jar/")
Date Fri, 16 Aug 2013 21:31:22 GMT

I want to use the VFSClassLoader on JAR files and Directories (to provide  
resources). My problem is, that some directories are exploded archives and  
have a name with a .jar extension.

The addFileObjects() of the VFSClassLoader uses canCreateFileSystem() to  
detect, if for a given file is a overlay which can read its content.  
However this method uses FileTypeMap#getScheme(file) which does look at  
the mimetype and extension of the file name, but not if it is actually a  

I think VFSClassLoader can check for hasContent() but I think that the  
solution should actually somewhere in canCreateFileSystem() as I could  
image there is a overlay filesystem which maps a directory into a  
filesystem (think .git).

Any ideas? Should I provide a patch for VFSClassLoader only to start with?


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