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=head1 NAME

Lucy::Search::RequiredOptionalQuery - Join results for two Queries, one required, one optional.

=head1 SYNOPSIS

    my $foo_and_maybe_bar = Lucy::Search::RequiredOptionalQuery->new(
        required_query => $foo_query,
        optional_query => $bar_query,
    );
    my $hits = $searcher->hits( query => $foo_and_maybe_bar );
    ...



=head1 DESCRIPTION

RequiredOptionalQuery joins the result sets of one Query which MUST match,
and one Query which SHOULD match.  When only the required Query matches,
its score is passed along; when both match, the scores are summed.

=head1 CONSTRUCTORS

=head2 new( I<[labeled params]> )

    my $reqopt_query = Lucy::Search::RequiredOptionalQuery->new(
        required_query => $foo_query,    # required
        optional_query => $bar_query,    # required
    );

=over

=item *

B<required_query> - Query must must match.

=item *

B<optional_query> - Query which should match.

=back





=head1 METHODS

=head2 get_required_query()

Getter for the required Query.

=head2 set_required_query(required_query)

Setter for the required Query.

=head2 get_optional_query()

Getter for the optional Query.

=head2 set_optional_query(optional_query)

Setter for the optional Query.



=head1 INHERITANCE

Lucy::Search::RequiredOptionalQuery isa L<Lucy::Search::PolyQuery> isa L<Lucy::Search::Query> isa L<Lucy::Object::Obj>.


=cut