1 package DBIx::Class::PK;
6 use base qw/Class::Data::Inheritable DBIx::Class::SQL/;
8 __PACKAGE__->mk_classdata('_primaries' => {});
12 DBIx::Class::PK - Primary Key class
18 This class represents methods handling primary keys
19 and depending on them.
30 return join(" AND ", map { "$_ = ?" } keys %{$class->_primaries});
35 return (map { $self->{_column_data}{$_} } keys %{$self->_primaries});
39 my ($class, @cols) = @_;
41 $pri{$_} = {} for @cols;
42 $class->_primaries(\%pri);
46 my ($class, @vals) = @_;
47 my $attrs = (@vals > 1 && ref $vals[$#vals] eq 'HASH' ? pop(@vals) : {});
48 my @pk = keys %{$class->_primaries};
49 die "Can't retrieve unless primary columns are defined" unless @pk;
51 if (ref $vals[0] eq 'HASH') {
53 } elsif (@pk == @vals) {
54 my $ret = ($class->retrieve_from_sql($class->_ident_cond, @vals, $attrs))[0];
55 #warn "$class: ".join(', ', %{$ret->{_column_data}});
60 die "Can't retrieve unless all primary keys are specified"
61 unless (keys %$query >= @pk); # If we check 'em we run afoul of uc/lc
62 # column names etc. Not sure what to do yet
63 my $ret = ($class->search($query))[0];
64 #warn "$class: ".join(', ', %{$ret->{_column_data}});
70 delete $self->{_dirty_columns};
71 return unless $self->in_database; # Don't reload if we aren't real!
72 my ($reload) = $self->retrieve($self->id);
73 unless ($reload) { # If we got deleted in the mean-time
74 $self->in_database(0);
77 $self->store_column($_ => $reload->get_column($_))
78 foreach keys %{$self->_columns};
84 die "Can't call id() as a class method" unless ref $self;
85 my @pk = $self->_ident_values;
86 return (wantarray ? @pk : $pk[0]);
95 Matt S. Trout <perl-stuff@trout.me.uk>
99 You may distribute this code under the same terms as Perl itself.