Added has_column and column_info methods

[dbsrgits/DBIx-Class.git] / lib / DBIx / Class / PK / Auto.pm

diff --git a/lib/DBIx/Class/PK/Auto.pm b/lib/DBIx/Class/PK/Auto.pm
index b9507a8..c2027cc 100644 (file)
--- a/lib/DBIx/Class/PK/Auto.pm
+++ b/lib/DBIx/Class/PK/Auto.pm
@@ -1,25 +1,79 @@
 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 $self->$_ } $self->primary_columns;
+  return $ret if ( $populated == scalar $self->primary_columns );
+
   my ($pri, $too_many) =
-    (grep { $self->_primaries->{$_}{'auto_increment'} }
-       keys %{ $self->_primaries })
-    || (keys %{ $self->_primaries });
-  die "More than one possible key found for auto-inc on ".ref $self
+    (grep { $self->column_info($_)->{'auto_increment'} }
+       $self->primary_columns)
+    || $self->primary_columns;
+  $self->throw( "More than one possible key found for auto-inc on ".ref $self )
     if $too_many;
-  unless (exists $self->{_column_data}{$pri}) {
-    die "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;
-    die "Can't get last insert id" unless $id;
+  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
+