NAME

KinoSearch::Search::Scorer - Score documents against a Query.

SYNOPSIS

    # Scorer is an abstract base class -- see MockScorer for an example
    # implementation.

Scorers iterate through a list of documents, producing score/doc_num pairs for further processing, typically by a HitCollector.

    my $scorer = MyScorer->SUPER::new(
        similarity => $sim,
    );

Abstract constructor.

Move the internal state of the scorer to the next document.

Returns: either a positive document number, or 0 (an invalid document number) when there are no more documents which match.

Skip to the first document number equal to or greater than the target. The default implementation just calls scorer_next() over and over.

Returns: either a positive document number, or 0 (an invalid document number) when there are no more documents which match.

Return the scorer's current document number. Valid only after a successful call to next() or skip_to() and must not be called otherwise.

Return a Tally containing scoring information. Valid only after a successful call to next() or skip_to() and must not be called otherwise.