package DBIx::Class::PK::Auto;
use base qw/Class::Data::Inheritable/;
use strict;
use warnings;
=head1 NAME
DBIx::Class::PK::Auto - Automatic Primary Key class
=head1 SYNOPSIS
=head1 DESCRIPTION
This class overrides the insert method to get automatically
incremented primary keys.
You don't want to be using this directly - instead load the appropriate
one for your database, e.g. PK::Auto::SQLite
=head1 METHODS
=over 4
=item insert
Overrides insert so that it will get the value of autoincremented
primary keys.
=cut
sub insert {
my ($self, @rest) = @_;
my $ret = $self->NEXT::ACTUAL::insert(@rest);
# if all primaries are already populated, skip auto-inc
my $populated = 0;
map { $populated++ if $self->$_ } keys %{ $self->_primaries };
return $ret if ( $populated == scalar keys %{ $self->_primaries } );
my ($pri, $too_many) =
(grep { $self->_primaries->{$_}{'auto_increment'} }
keys %{ $self->_primaries })
|| (keys %{ $self->_primaries });
$self->throw( "More than one possible key found for auto-inc on ".ref $self )
if $too_many;
unless (defined $self->get_column($pri)) {
$self->throw( "Can't auto-inc for $pri on ".ref $self.": no _last_insert_id method" )
unless $self->can('last_insert_id');
my $id = $self->last_insert_id;
$self->throw( "Can't get last insert id" ) unless $id;
$self->store_column($pri => $id);
}
return $ret;
}
=item sequence
Manually define the correct sequence for your table, to avoid the overhead
associated with looking up the sequence automatically.
=cut
__PACKAGE__->mk_classdata('sequence');
1;
=back
=head1 AUTHORS
Matt S. Trout <mst@shadowcatsystems.co.uk>
=head1 LICENSE
You may distribute this code under the same terms as Perl itself.
=cut