Max time span allowed in search

ivoa-std / ConeSearch

Simple Cone Search

Creative Commons Attribution Share Alike 4.0 International

2 stars 4 forks source link

Max time span allowed in search #30

Open molinaro-m opened 4 years ago

molinaro-m commented 4 years ago

Likewise maxSR in the Resource metadata, we'd possibly need a maxTimeSpan for services that want to limit the maximum extent of the searchable time span.

We need to define:

what unit will it be in: [s]?
defaults to: no limit? (this supposing it will be optional)

Not clear whether this, as well as the full registration prescriptions, should stay in the ConeSearch document or continue to live within SimpleDALRegExt.

mbtaylor commented 4 years ago

Limits get complicated once we have both time and space constraints. In practice a service may be willing to permit searches over all time in a tight cone, but only over a limited time for large area or all-sky queries. Before adding a maxTimeSpan parameter I would suggest to discuss with service providers whether this would in fact be useful. Perhaps something like a service-defined MAXREC limit would be more appropriate.