Xapian discuss - Mar 2006 - Total matches found and how to disable stemming.

Hello,

1.) Please can somebody let me know what is the best way to find total
matches on  terms?

Perl example:

    my $db = Search::Xapian::Database->new( '/europa2' );
    my $qp = Search::Xapian::QueryParser->new();
    my $enq = $db->enquire($qp->parse_query($terms));

    #----- now at this point I want only to display matches from 0 - 25
    my @matches = $enq->matches(0, 25);

    # but what is the best wayt to find ahead, how many total matches we
have for the terms?


2.) How do I disable stemming. I think Xapian keep stemming terms despite my
terms are not in English.


Kevin
http://nitra.net
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://lists.tartarus.org/pipermail/xapian-discuss/attachments/20060307/93b8035a/attachment-0001.htm

On Tue, Mar 07, 2006 at 08:57:24AM -0800, Kevin SoftDev
wrote:
> 1.) Please can somebody let me know what is the best way to find total
> matches on  terms?
MSet::get_matches_estimated() :

http://www.xapian.org/docs/apidoc/html/classXapian_1_1MSet.html#eab0a82126d9f2cf0ef5321549ea9775

This is an estimate - you can find out upper and lower bounds on the
value with MSet::get_matches_upper_bound() and
MSet::get_matches_lower_bound().
> 2.) How do I disable stemming. I think Xapian keep stemming terms despite
my
> terms are not in English.
I assume you mean at search time when using the QueryParser, in which
case you want to call QueryParser::set_stemming_strategy() with
QueryParser::STEM_NONE.

Cheers,
    Olly

Olly,

Yes I tried but I am nit sure if I understand the right syntax in Perl. Is
this one correct ? Because does not seems to work.

my $qp    = Search::Xapian::QueryParser->new();
$qp->set_stemming_strategy(STEM_NONE);
my $enq   = $db->enquire($qp->parse_query($terms));

Kevin



On 3/8/06, Olly Betts <olly@survex.com> wrote:
>
> On Tue, Mar 07, 2006 at 08:57:24AM -0800, Kevin SoftDev wrote:
> > 1.) Please can somebody let me know what is the best way to find total
> > matches on  terms?
>
> MSet::get_matches_estimated() :
>
>
>
http://www.xapian.org/docs/apidoc/html/classXapian_1_1MSet.html#eab0a82126d9f2cf0ef5321549ea9775
>
> This is an estimate - you can find out upper and lower bounds on the
> value with MSet::get_matches_upper_bound() and
> MSet::get_matches_lower_bound().
>
> > 2.) How do I disable stemming. I think Xapian keep stemming terms
> despite my
> > terms are not in English.
>
> I assume you mean at search time when using the QueryParser, in which
> case you want to call QueryParser::set_stemming_strategy() with
> QueryParser::STEM_NONE.
>
> Cheers,
>    Olly
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://lists.tartarus.org/pipermail/xapian-discuss/attachments/20060309/16415506/attachment.htm