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.\"
.IX Title "KinoSearch1::Search::QueryFilter 3pm"
.TH KinoSearch1::Search::QueryFilter 3pm 2024-03-10 "perl v5.38.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH NAME
KinoSearch1::Search::QueryFilter \- build a filter based on results of a query
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 10
\&    my $books_only_query  = KinoSearch1::Search::TermQuery\->new(
\&        term => KinoSearch1::Index::Term\->new( \*(Aqcategory\*(Aq, \*(Aqbooks\*(Aq );
\&    );
\&    my $filter = KinoSearch1::Search::QueryFilter\->new(
\&        query => $books_only_query;
\&    );
\&    my $hits = $searcher\->search(
\&        query  => $query_string,
\&        filter => $filter,
\&    );
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
A QueryFilter spawns a result set that can be used to filter the results of
another query.  The effect is very similar to adding a required clause to a
BooleanQuery \-\- however, a QueryFilter
caches its results, so it is more efficient if you use it more than once.
.SH METHODS
.IX Header "METHODS"
.SS new
.IX Subsection "new"
.Vb 3
\&    my $filter = KinoSearch1::Search::QueryFilter\->new(
\&        query => $query;
\&    );
.Ve
.PP
Constructor.  Takes one hash-style parameter, \f(CW\*(C`query\*(C'\fR, which must be an
object belonging to a subclass of
KinoSearch1::Search::Query.
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright 2005\-2010 Marvin Humphrey
.SH "LICENSE, DISCLAIMER, BUGS, etc."
.IX Header "LICENSE, DISCLAIMER, BUGS, etc."
See KinoSearch1 version 1.01.