Author image Marvin Humphrey
and 1 contributors

NAME

KinoSearch::Search::Searcher - Base class for searching collections of documents.

SYNOPSIS

    # Abstract base class.

DESCRIPTION

Abstract base class for objects which search. Core subclasses include KinoSearch::Search::IndexSearcher and KinoSearch::Search::PolySearcher.

CONSTRUCTORS

new( [labeled params] )

    package MySearcher;
    use base qw( KinoSearch::Search::Searcher );
    sub new {
        my $self = shift->SUPER::new;
        ...
        return $self;
    }

Abstract constructor.

  • schema - A Schema.

METHODS

hits( [labeled params] )

Return a Hits object containing the top results.

  • query - Either a Query object or a query string.

  • offset - The number of most-relevant hits to discard, typically used when "paging" through hits N at a time. Setting offset to 20 and num_wanted to 10 retrieves hits 21-30, assuming that 30 hits can be found.

  • num_wanted - The number of hits you would like to see after offset is taken into account.

  • sort_spec - A KinoSearch::Search::SortSpec, which will affect how results are ranked and returned.

glean_query(query)

If the supplied object is a Query, return it; if it's a query string, create a QueryParser and parse it to produce a query against all indexed fields.

get_schema()

Accessor for the object's schema member.

ABSTRACT METHODS

collect( [labeled params] )

Iterate over hits, feeding them into a Collector.

  • query - A Query.

  • collector - A Collector.

doc_max()

Return the maximum number of docs in the collection represented by the Searcher, which is also the highest possible internal doc id. Documents which have been marked as deleted but not yet purged are included in this count.

doc_freq( [labeled params] )

Return the number of documents which contain the term in the given field.

  • field - Field name.

  • term - The term to look up.

fetch_doc( [labeled params] )

Retrieve a document. Throws an error if the doc id is out of range.

  • doc_id - A document id.

  • score - A floating point score.

  • offset - Amount to be added to the doc_id if this Searcher is a subcomponent of another.

INHERITANCE

KinoSearch::Search::Searcher isa KinoSearch::Object::Obj.

COPYRIGHT AND LICENSE

Copyright 2005-2010 Marvin Humphrey

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.