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package Catmandu::Store::MongoDB::Searcher;
use Catmandu::Sane;
our $VERSION = '0.0806';
use Moo;
use namespace::clean;
with 'Catmandu::Iterable';
has bag => (is => 'ro', required => 1);
has query => (is => 'ro', required => 1);
has start => (is => 'ro', required => 1);
has limit => (is => 'ro', required => 1);
has total => (is => 'ro');
has sort => (is => 'ro');
has fields => (is => 'ro');
sub generator {
my ($self) = @_;
sub {
state $cursor = do {
my $c = $self->bag->_cursor($self->query);
$c->fields($self->fields) if defined $self->fields;
# limit is unused because the perl driver doesn't expose batchSize
$c->limit($self->total) if defined $self->total;
$c->sort($self->sort) if defined $self->sort;
$c->immortal(1);
$c;
};
$cursor->next;
};
}
sub slice { # TODO constrain total?
my ($self, $start, $total) = @_;
$start //= 0;
$self->new(
bag => $self->bag,
query => $self->query,
start => $self->start + $start,
limit => $self->limit,
total => $total,
sort => $self->sort,
fields => $self->fields,
);
}
sub count { # TODO constrain on start, total?
my ($self) = @_;
my $query = $self->query;
if (!($query && scalar(keys %$query) > 0)
&& $self->bag->store->estimate_count)
{
return $self->collection->estimated_document_count();
}
$self->bag->collection->count_documents($self->query,
$self->bag->_options);
}
1;
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