NAME

ElasticSearch::ScrolledSearch - Description

SYNOPSIS

    $scroller = $es->scrolled_search($search_params);
  OR
    $scroller = ElasticSearch::ScrolledSearch($es,$search_params);

    while (my $result = $scroller->next) {
        # do something
    }

    $total  = $scroller->total;
    $bool   = $scroller->eof
    $score  = $scroller->max_score;
    $facets = $scroller->facets;

DESCRIPTION

ElasticSearch::ScrolledSearch is a convenience iterator for scrolled searches. It accepts the standard search parameters that would be passed to "search()" in ElasticSearch. The scroll parameter defaults to 1m.

    $scroller = $es->scrolled_search(
                    query  => {match_all=>{}},
                    scroll => '5m'               # keep the scroll request
                                                 # live for 5 minutes
                );

METHODS

new()

    $scroller = $es->scrolled_search($search_params);
  OR
    $scroller = ElasticSearch::ScrolledSearch($es,$search_params);

next()

    @results = $scroller->next()
    @results = $scroller->next($no_of_results);

Returns the next result, or the next $no_of_results or an empty list when no more results are available.

An error is thrown if the scroll has already expired.

If as_json => 1 is specified, then "next()" will always return a JSON array:

   $scroller->next()
   # '[{...}]'

   $scroller->next(2)
   # '[{...},{...}]'

   # if no results left: '[]'

drain_buffer()

    @docs = $scroller->drain_buffer;

Returns and removes all docs that are currently stored in the buffer.

refill_buffer()

    $buffer_size = $scroller->refill_buffer

Pulls the next set of results from ElasticSearch (if any) and returns the total number of docs stored in the internal buffer.

total()

    $total = $scroller->total

The total number of hits

max_score()

    $score = $scroller->max_score

The max_score returned from the first search request (if available).

eof()

    $bool = $scroller->eof

Returns true if no more results are available. Note: if no results match the search, then eof() could be false but the first call to next() will return zero results.

facets()

    $facets = $scroller->facets

The facets returned from the first search request (if any).

If as_json => 1 is specified, then "facets()" will always return a JSON object.

SEE ALSO

"scrolled_search()" in ElasticSearch, "search()" in ElasticSearch and "scroll()" in ElasticSearch

BUGS

None known

AUTHOR

Clinton Gormley, <clinton@traveljury.com>

COPYRIGHT AND LICENSE

Copyright (C) 2011 by Clinton Gormley

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.7 or, at your option, any later version of Perl 5 you may have available.

cpanm ElasticSearch

perl -MCPAN -e shell
install ElasticSearch