Erwin Wessels writes:
> - The scan operation allows for (a.o.) hit-count information, but
> only for a term in a specific index. How could we retrieve the
> hitcount for a particular search string for *multiple* index fields
What's wrong with multiple scans -- one for each such index?
Or if you want the aggregate number of hits for your search-terms
across all relevant indexes, then define an index which is the union
of those indexes, and scan on that.
> - Drill-down enabling information: information on hit counts for
> refining for (possibly) indicated indexes.
> In other words, functionally speaking, I'm looking for the
> refinement options when searching for title 'rabbit', for the index
> 'author' and a maximum records it would tell me 'Potter, Beatrix'
> (105 results), 'Wells, Rosemary' (63 results), 'Carroll, Lewis' (41
> results), and 954 more refinements.
To do this, I think you need "scan within result-set", which is not
supported in the SRU protocol. The most economical way to provide
access to such functionality in an underlying database would be to
make an extension, using an <extraRequestInfo> element in SRW and an
equivalent x-Whatever parameter in SRU, to tell the server the name of
the result-set that you want it to scan.
/o ) \/ Mike Taylor <[log in to unmask]> http://www.miketaylor.org.uk
)_v__/\ "The fighting must begin before another someone dies" -- Ritchie
Blackmore's Rainbow, _16th Century Greensleeves_. Eh?