1 package DBIx::Class::PK;
7 use base qw/Class::Data::Inheritable/;
9 __PACKAGE__->mk_classdata('_primaries' => {});
13 DBIx::Class::PK - Primary Key class
19 This class represents methods handling primary keys
20 and depending on them.
31 return join(" AND ", map { "$_ = ?" } keys %{$class->_primaries});
36 return (map { $self->{_column_data}{$_} } keys %{$self->_primaries});
40 my ($class, @cols) = @_;
42 tie %pri, 'Tie::IxHash';
43 %pri = map { $_ => {} } @cols;
44 $class->_primaries(\%pri);
48 my ($class, @vals) = @_;
49 my $attrs = (@vals > 1 && ref $vals[$#vals] eq 'HASH' ? pop(@vals) : {});
50 my @pk = keys %{$class->_primaries};
51 die "Can't retrieve unless primary columns are defined" unless @pk;
53 if (ref $vals[0] eq 'HASH') {
55 } elsif (@pk == @vals) {
56 my $ret = ($class->retrieve_from_sql($class->_ident_cond, @vals, $attrs))[0];
57 #warn "$class: ".join(', ', %{$ret->{_column_data}});
62 die "Can't retrieve unless all primary keys are specified"
63 unless (keys %$query >= @pk); # If we check 'em we run afoul of uc/lc
64 # column names etc. Not sure what to do yet
65 my $ret = ($class->search($query))[0];
66 #warn "$class: ".join(', ', %{$ret->{_column_data}});
72 delete $self->{_dirty_columns};
73 return unless $self->in_database; # Don't reload if we aren't real!
74 my ($reload) = $self->retrieve($self->id);
75 unless ($reload) { # If we got deleted in the mean-time
76 $self->in_database(0);
79 $self->store_column($_ => $reload->get_column($_))
80 foreach keys %{$self->_columns};
86 die "Can't call id() as a class method" unless ref $self;
87 my @pk = $self->_ident_values;
88 return (wantarray ? @pk : $pk[0]);
97 Matt S. Trout <perl-stuff@trout.me.uk>
101 You may distribute this code under the same terms as Perl itself.