[Dspace-general] Replacing a bitstream and getting an updated checksum value in the metadata

[Sunyeen Pai]

Greetings,

We are just at the beginning of setting up our repository.  I was wondering if you could advise us on this question:

Background: We are working with an online journal editor who, in the past, has included the paper's url in the footer of the paper itself.  We would like to accommodate this, but is this feasible?  I am pretty sure handle ids are not assigned until the document is completely ingested, so I don't think there is a way of knowing what a url will be before the document has been ingested (please correct me if I am wrong).  We were looking at, therefore, waiting for the document to be "archived", getting the assigned handle, then editing the pdf to reflect the new url.  Then we would "replace" the bitstream/document in the item record with the updated bitstream.

Problem with this solution:  It is easy to remove the original bitstream and add in the corrected one, but then the checksum information is no longer correct.

Questions:  Can DSpace re-run checksums on corrected/replaced bitstreams so that the new checksum value is automatically reflected in the item's metadata (dc_provenance)?  Or is this something that must be corrected manually in the metadata?

ps:  If there is no easy way to do this, we will get back with the editor.

Thank you, 
--Sunny Pai

University of Hawaii at Manoa Library