Question: harvesting managed vs. all resource records
Tony Linde
Tony.Linde at leicester.ac.uk
Thu Mar 31 08:34:55 PST 2005
Ray Plante wrote:
> On Thu, 31 Mar 2005, John Good wrote:
>
>>Does the Registry infrastructure keep track of the "point of origin"
>>(the Registry where the data was first entered)?
>
>
> Yes.
Is this right - an individual record states the registry which manages it?
>>You could then
>>allow additional constraints that specified the point(s) of origin in
>>general ("give me all the records that you have that were originally
>>entered into the CDS Registry"). Your constraint is just a special
>>case of this.
>
>
> This becomes a little more difficult to do with the OAI interface.
We could always drop OAI and use XQuery <ducks behind tall wall>
> Selective harvesting based on anything other than time must use these
> so-called sets, predefined names for subsets of the records. We could
> define names for the different registries;
Definitely not.
> however, this is awkward from a
> standards point of view: everytime a new registry appears we would need to
> define a name. We could attempt to develop a scheme for doing this
> dynamically, but given the effort needed to support it, I would prefer to
> hear broader support for this feature first before we attempt to support
> it. It's a good idea, and it's certainly something that can be easily
> added in a later version of the spec.
>
> Note that this query can be much more easily done with the searchable
> interface. So we should recall that OAI is not meant for generalized
> searching. This query might be considered on the fence between a search
> and a selective harvest.
Agreed - this is a search. Harvesting should return only all or managed
only.
>
> cheers,
> Ray
>
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