Re: [Entityfs-users] Jar in Jar filesystem

[Karl G. <kar...@en...>]

Hi Jan,

Sorry for the late answer. You are probably working on something 
completely different by now.

Anyway. The reason for the FCTFileBacked requirement is that the file 
system implementation uses Java's JarFile object, which wants a File in 
its constructor.

It would be possible to base the file system implementation on At4J's 
Zip implementation instead. That only requires that the Zip or Jar file 
supports the FCRandomAccess capability, i.e. that a RandomAccess object 
can be opened on it. I think, without having looked into it, that would 
be possible for most nested Jar or Zip files, since files that are 
already compressed will probably be stored as STORED (i.e. not 
compressed once more) in a Jar or Zip file.

However, that would require the rewriting of the current Zip and Jar 
file system to use At4J instead.

Regards
/Karl