Check the Jena TDB files exist in a directory

[Laurent Rucquoy]

Hello,

I want to load a Dataset from a directory but not to create a new one if
there is no TDB files in this directory. Is there a way to check that TDB
files effectively exist in a directory or to load a Dataset while
preventing to create files on disk if they don't exist ?

Thank you.

Sincerely,
Laurent