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;