KinoSearch1::Search::QueryFilter - build a filter based on results of a query

       Copyright 2005-2010 Marvin Humphrey

       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.

       See KinoSearch1 version 1.01.

perl v5.40.0                                       2024-10-20              KinoSearch1::Search::QueryFilter(3pm)

new
           my $filter = KinoSearch1::Search::QueryFilter->new(
               query => $query;
           );

       Constructor.  Takes one hash-style parameter, "query", which must be an object belonging to a subclass of
       KinoSearch1::Search::Query.

       KinoSearch1::Search::QueryFilter - build a filter based on results of a query

           my $books_only_query  = KinoSearch1::Search::TermQuery->new(
               term => KinoSearch1::Index::Term->new( 'category', 'books' );
           );
           my $filter = KinoSearch1::Search::QueryFilter->new(
               query => $books_only_query;
           );
           my $hits = $searcher->search(
               query  => $query_string,
               filter => $filter,
           );