[Dbix-class] Problem with populate() and commits?

[Chris Cole]

Hi,

Given this schema:
package DB::Schema::Species;

use strict;
use warnings;

use base 'DBIx::Class';

__PACKAGE__->load_components("Core");
__PACKAGE__->table("species");
__PACKAGE__->add_columns(
  "species_id",
  {
    data_type => "SMALLINT",
    default_value => undef,
    is_nullable => 0,
    size => 5,
  },
  "short_name",
  { data_type => "VARCHAR", default_value => "", is_nullable => 0, size
=> 255 },
  "common_name",
  {
    data_type => "VARCHAR",
    default_value => undef,
    is_nullable => 1,
    size => 255,
  },
  "full_name",
  { data_type => "VARCHAR", default_value => "", is_nullable => 0, size
=> 255 },
);
__PACKAGE__->set_primary_key("species_id");
__PACKAGE__->has_many(
  "db_sequences",
  "DB::Schema::DbSequences",
  { "foreign.species_id" => "self.species_id" },
);
__PACKAGE__->has_many(
  "experiments",
  "DB::Schema::Experiment",
  { "foreign.species" => "self.species_id" },
);
__PACKAGE__->has_many(
  "genome_matches",
  "DB::Schema::GenomeMatch",
  { "foreign.species_id" => "self.species_id" },
);

and this code:
my $schema = DB::Schema->connect(stuff);

my $species = $schema->resultset("Species");

$species->populate([
   { short_name => $shortName,
     full_name => $longName,
     common_name => $commonName }
]);

Why does it work fine when I have Autocommit 'on', but get the following
error with Autocommit 'off':
DBIx::Class::ResultSet::update(): Values for update must be a hash at
./add_species.pl line 46
Issuing rollback() for database handle being DESTROY'd without explicit
disconnect().

where line 46 is:
$species->update();

I don't get it??