Provided by: libmango-perl_1.29-1_all
NAME
Mango::Cursor::Query - MongoDB query cursor
SYNOPSIS
use Mango::Cursor::Query; my $cursor = Mango::Cursor::Query->new(collection => $collection); my $docs = $cursor->all;
DESCRIPTION
Mango::Cursor::Query is a container for MongoDB query cursors used by Mango::Collection.
ATTRIBUTES
Mango::Cursor::Query inherits all attributes from Mango::Cursor and implements the following new ones. await_data my $await = $cursor->await_data; $cursor = $cursor->await_data(1); Await data. comment my $comment = $cursor->comment; $cursor = $cursor->comment('Fun query!'); A comment to identify query. fields my $fields = $cursor->fields; $cursor = $cursor->fields({foo => 1}); Select fields from documents. hint my $hint = $cursor->hint; $cursor = $cursor->hint({foo => 1}); Force a specific index to be used. max_scan my $max = $cursor->max_scan; $cursor = $cursor->max_scan(500); Limit the number of documents to scan. max_time_ms my $max = $cursor->max_time_ms; $cursor = $cursor->max_time_ms(500); Timeout for query in milliseconds. query my $query = $cursor->query; $cursor = $cursor->query({foo => 'bar'}); Original query. read_preference my $pref = $cursor->read_preference; $cursor = $cursor->read_preference({mode => 'SECONDARY'}); Read preference. skip my $skip = $cursor->skip; $cursor = $cursor->skip(5); Number of documents to skip, defaults to 0. snapshot my $snapshot = $cursor->snapshot; $cursor = $cursor->snapshot(1); Use snapshot mode. sort my $sort = $cursor->sort; $cursor = $cursor->sort({foo => 1}); $cursor = $cursor->sort(bson_doc(foo => 1, bar => -1)); Sort documents, the order of keys matters. tailable my $tailable = $cursor->tailable; $cursor = $cursor->tailable(1); Tailable cursor.
METHODS
Mango::Cursor::Query inherits all methods from Mango::Cursor and implements the following new ones. build_query my $query = $cursor->build_query; my $query = $cursor->build_query($explain); Generate final query with cursor attributes. clone my $clone = $cursor->clone; Clone cursor. count my $count = $cursor->count; Count number of documents this cursor can return. You can also append a callback to perform operation non-blocking. $cursor->count(sub { my ($cursor, $err, $count) = @_; ... }); Mojo::IOLoop->start unless Mojo::IOLoop->is_running; distinct my $values = $cursor->distinct('foo'); Get all distinct values for key. You can also append a callback to perform operation non- blocking. $cursor->distinct(foo => sub { my ($cursor, $err, $values) = @_; ... }); Mojo::IOLoop->start unless Mojo::IOLoop->is_running; explain my $doc = $cursor->explain; Provide information on the query plan. You can also append a callback to perform operation non-blocking. $cursor->explain(sub { my ($cursor, $err, $doc) = @_; ... }); Mojo::IOLoop->start unless Mojo::IOLoop->is_running;
SEE ALSO
Mango, Mojolicious::Guides, <http://mojolicio.us>.