[cups] reorder queue

[Marcel Schnirring]

Hello everyone,

I would like to change the position of some jobs within a queue
(class/printer). As far as I can see, there is no currently implemented
option (also not defined in IPP specification).
(Note: parameters for this options could be: 1. absolute position, 2.
before / after job-id)

We need this option in order to make sure that jobs from one user are
bundled together (+ one cover page) to efficiently deliver printed
documents to the correct user.

Therefore our concept was as follows: Create an own backend which fetches
the next job and move all other jobs from this user to be beginning (first
element) of the queue. When there are no more jobs from this user then
finish the bundle.

Multi document jobs seem to be a bad option since we want to keep as many
user specified printing options as possible.

What would be the best solution for this task?

Any help appreciated!

Thanks,
Marcel