[Koha-bugs] [Bug 10662] Build OAI-PMH Harvesting Client

[bugzilla-daemon at bugs.koha-community.org]

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=10662

--- Comment #52 from David Cook <dcook at prosentient.com.au> ---
(In reply to Leif Andersson from comment #51)
> (In reply to David Cook from comment #50)
> > Honestly though, I would ask that people think further about the frequency
> > of harvests. Is every 2-3 seconds really necessary? Do we really need it to
> > be able to perform that quickly?
> > 
> 
> Well, the use case envisioned by Stockholm UL would in practice ideally
> involve fetching ONE record every 10 minutes or so!
> The cataloger will be creating/modifying a bib record and a mfhd record in
> our union catalog.
> Next, the cataloger will turn to our local catalog, Koha, expecting to find
> this record already imported.
> If there is a way for the harvester to decide which ONE record to
> get...maybe even with some intervention by the cataloger...?
> So when this ONE record is asked for, we want it to be a quick process
> getting it from the source and into Koha.
> 

What's Stockholm UL? 

So you're saying that the union catalogue will only have updates about once
every 10 minutes? Or that the cataloguer will only be accessing a record in the
union catalogue and Koha once every 10 minutes?

I am including a mechanism for fetching "one" record, so long as the user knows
the OAI-PMH identifier they're after. They'll be able to add a task for that.
Perhaps a future development could be done to provide an interface in the
cataloguing module for adding/updating a single record. In place of that
interface, they'll be able to add a task in the same area as the other tasks in
order to get the one record...

> Then nightly more massive harvests could be performed to catch up with other
> modifications to the union catalog.
> 

Those nightly harvests would certainly be possible with the current design. 

> From my point of view it seems a little contrived to use a OAI harvester for
> this kind of job - synching Koha with union catalog just to be able to
> instantly work locally on a record.
> But it is what has been recommended to us by the union catalog from which we
> are importing records.

What do you mean by "work locally on a record"? The union catalog will be the
source of truth, so any modifications to a record in Koha would be overwritten
by a change in the union catalogue.

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