[GeoNetwork-users] Paging of results from CSW GETRECORDS

[Gutfreund, Y. <ygu...@dr...>]

Let me make this a simpler question: Does GeoNetwork support paged
delivery of results from a GETRECORDS that returns 100K+ hits? (ISO
profile)

[I.e. so that the result is not in a single HTTP response body (XML).

 

I see in the CSW 2.02 specification that it APPEARS that I could use the

'startPosition' parameter of the GETRECORDS request as a sort of

database cursor, and use the 'nextRecord' and 'numberOfRecordsReturned'

as the handshake in the response to walk the results.

 

I have already found out that DEEGREES does not support this out the of
box.

 

I am concerned about the actual implementation in GEONETWORK that it
does not maintain state properly to be able to do
this sort of cursor-based walking of a very large GETRECORDS response.
(would they use the 'requestId' to keep a state-full partial response,
or would they do the query for the 1M records all over again?)

 

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Y.Gutfreund, Ph.D.

Principal Member of Technical Staff

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-