[Xapian-discuss] Wondering about the n-gram QP ?

Richard Boulton richard at lemurconsulting.com
Tue Jul 21 22:07:07 BST 2009

2009/7/21 Thomas Leitch <Thomas.Leitch at bbc.co.uk>

> I know a good while ago some code was floating around to create an
> n-gram query parser. I'm just wondering if there are any current plans
> for something like that to find its way into Xapian proper ?  We're
> currently pre-generating a load of grams before pushing them into a
> Xapian database, but increasingly we're starting to use custom boolean
> prefixes.  Having a native n-gram query parser would be fab.

There aren't any definite plans that I know of, but it's certainly something
we'd like to do - just haven't got around to it yet.

The relevant ticket is http://trac.xapian.org/ticket/180 - the ticket is
currently marked as something to address in the 1.1 series, and has a high
priority, so the chances are reasonable that it'll get done in the next few

Patches (particularly if they include tests!) will help this process along,

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