Store file size in OCFL metadata #116
Description
There are certain use cases for size metadata in OCFL, e.g.
- directory listing / file inventory of an object
- calculation of storage size of an object
- provided a Content-Length Header when implementing a FileDownloadServlet based on an OCFL backend.
The straight forward implementation would simply treat the size as another fixity
as already mentioned in OCFL Community Extension 0009: Digest Algorithms
(https://ocfl.github.io/extensions/0009-digest-algorithms.html)
I'm going to create a Pull Request based on my current sample code for this.
If we can open the DigestAlgorithmn class for extension (make constructor public) it becomes easier to support other fixity values.