[Xapian-discuss] Obtaining actual match count if using set_collapse_key()

[Olly Betts]

On Sat, Dec 06, 2008 at 06:56:16PM +0200, Henry wrote:
> Is it possible to obtain the actual match count if you're using  
> set_collapse_key()?  ie, the total count *before* the collapsing  
> occurs (without using get_mset()).

http://trac.xapian.org/wiki/FAQ/MoreAccurateEstimates

> Alternatively, will MSet::get_matches_estimated() return the true -  
> pre-collapse - count, or will it also be affected by collapsing?

Hmm, the API documentation is rather vague isn't it?

It's affected by collapsing - it's an estimate of the size of the MSet
if you asked for infinity documents.

Cheers,
    Olly