Question: harvesting managed vs. all resource records

[Gretchen Greene]

This also triggers the idea of how the original resources are "curated"
and perhaps this is stated in the registry interface doc (I admit I
haven't completely reread this).  

When you answered yes to the point of origin are you referring to the
'harvestedfrom' and if so is this now in the spec?  Also the
harvestedDate?

We also discussed the getRegistries or something to that affect which
would be good to have the OAI harvested dates in as well.

-Gretchen

P.s.  And I agree it would be beneficial to be able to get all records
from an OAI set as long as you have these point of origins in place.


-----Original Message-----
From: owner-registry at eso.org [mailto:owner-registry at eso.org] On Behalf
Of Ray Plante
Sent: Thursday, March 31, 2005 10:29 AM
To: registry at ivoa.net
Subject: Re: Question: harvesting managed vs. all resource records


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.

> 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.  
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; 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.  

cheers,
Ray