Lucy::Search::NOTQuery - Invert the result set of another Query.
my $not_bar_query = Lucy::Search::NOTQuery->new( negated_query => $bar_query, ); my $foo_and_not_bar_query = Lucy::Search::ANDQuery->new( children => [ $foo_query, $not_bar_query ]. ); my $hits = $searcher->hits( query => $foo_and_not_bar_query ); ...
A NOTQuery wraps another Query and matches against its inverse document set. All matching docs recieve a score of 0.0.
NOTQuery is often used in conjunction with ANDQuery to provide “a AND NOT b” semantics.
my $not_query = Lucy::Search::NOTQuery->new( negated_query => $query, );
Create a new NOTQuery.
negated_query - The Query whose result set should be inverted.
my $query = $not_query->get_negated_query();
Accessor for the object’s negated query.
Setter for the object’s negated query.
my $compiler = $not_query->make_compiler( searcher => $searcher, # required boost => $boost, # required subordinate => $subordinate, # default: false );
Abstract factory method returning a Compiler derived from this Query.
searcher - A Searcher.
boost - A scoring multiplier.
subordinate - Indicates whether the Query is a subquery (as opposed to a top-level query). If false, the implementation must invoke normalize() on the newly minted Compiler object before returning it.