[KinoSearch] RangeQuery

[Marvin Humphrey]

On Mon, Jan 11, 2010 at 09:43:16AM -0600, Peter Karman wrote:
> Is there support in KinoSearch::QueryParser for building RangeQuery
> objects? Something like:
> 
>  myfield:foo..bar
> 
> or the like?

Not there.

> If there is not support, should I pursue adding such?

Not to this QueryParser.  Yonik Seely (Solr) and I discussed query languages
at ApacheCon, and we concluded that you need two different parsers: a DWIM
version for users, and a full-featured, strict one for programmers.  The
current parser is a DWIM version, and it is designed to handle only the syntax
that is nearly universal across typical web search interfaces.  No such syntax
is common for range queries -- sites tend to use "advanced search" interfaces
for that, with extra form elements.

I'd be up for adding a second parser that not only supported range queries,
but MatchAllQuery, NoMatchQuery, boosts, etc.  However, the code for the
current one is awfully convoluted, and I don't think it's a good idea to fork
it and start adding features.  I've been considering trying something with
Antlr, but up till now it's been a lower priority than porting stuff to Lucy.

Marvin Humphrey