Copy / move file to different version?

[hagenw]

We have copy_file() and move_file() for audbackend.interface.Versioned and audbackend.interface.Maven. But in both cases it is only possible to copy/move a file to the same version it was originally stored with.
One can still achieve the desired result by first downloading it and then uploading it again, but the idea behind move_file() and copy_file() was to avoid this.

[frankenjoe]

Yes that makes sense. I guess the simplest solution would you like to drop the option to copy / move all versions of a file and introduce version_src as a mandatory argument and have version_dst as an optional argument.

[hagenw]

I also like the option to copy/move all versions of a file at once.
I would propose the following:

• stay with the name version for specifying the source version
• add version_dst to specify a destination version
• if version is not given copy/move all files. If version_dst is given in this case, raise a ValueError

This would have also the advantage that we can stick with the current solution for now and add version_dst only if we need it at a later stage without breaking any API.

[frankenjoe]

Yes, sounds good to me.