[Xapian-discuss] searching categories

[james cauwelier]

Thanks, I think I understand what 's happening now.  This confusion is
probably all due to using a tool without understanding the inner workings
and theory that's behind it.

I greatly appreciate the help.


James

2009/4/29 Olly Betts <olly at survex.com>

> On Tue, Apr 28, 2009 at 10:55:10AM +0100, James Aylett wrote:
> > On Tue, Apr 28, 2009 at 10:40:02AM +0200, james cauwelier wrote:
> >
> > > Here is some testing I have done.  I have removed the space, so that I
> have
> > > a unique indexable term.  Why can I index 'piep' and find it in a
> query,
> > > while indexing and querying 'engelseboeken' doesn't seem to work in the
> same
> > > way?
> >
> > engelseboeken is stemming to engelseboek. piep is stemming to
> > piep. You need to ensure that QueryParser-style stemming is occurring
> > as you create the XCATEGORY-prefixed terms, and the easiest way of
> > doing this is to use the TermGenerator.
>
> Or if these category labels should be matched exactly without stemming
> (e.g. file extensions) then you can make them boolean filters by using
> QueryParser:add_boolean_prefix() instead of QueryParser::add_prefix().
>
> Currently you're indexing them as if they were boolean filters but
> searching as if they were probabilistic, hence the problems.
>
> Cheers,
>     Olly
>
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