[Xapian-discuss] Less than, greater than?

[rm at fabula.de]

On Wed, Feb 09, 2005 at 10:29:41AM -0500, Eric B.Ridge wrote:
> On Feb 9, 2005, at 9:51 AM, John Wards wrote:
> >Doh..so it is.
> >
> >It was a bit of a long shot as I suppose.
> 
> Not really.  You can do it like some of us do wildcard searches.
> 
> For greater than, get a TermIterator from the Database, skip_to() the 
> starting price and include all the prices after in your query, OR'd 
> together as a group.  For less than, start at the beginning of the 
> TermIterator and stop when you hit the end price.

Hmm, but the big caveat here is: prices tend to be numeric and don't sort
in alphabetic order ... 

 RalfD

> I'm assuming you've got a term in each document like XP5.00 that would 
> represent a field named Price with a value of five bucks.
> 
> I think a custom MatchDecider would work too.  Here you could use an 
> indexed value of each document to make the decision, but I think this 
> happens across the entire set of documents that match your initial 
> query, not in-line with the query matching.
> 
> eric
> 
> 
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