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 $class->throw( "Can't find unless primary columns are defined" )
54 if (ref $vals[0] eq 'HASH') {
56 } elsif (@pk == @vals) {
58 @{$query}{@pk} = @vals;
59 #my $ret = ($class->search_literal($class->_ident_cond, @vals, $attrs))[0];
60 #warn "$class: ".join(', ', %{$ret->{_column_data}});
65 $class->throw( "Can't find unless all primary keys are specified" )
66 unless (keys %$query >= @pk); # If we check 'em we run afoul of uc/lc
67 # column names etc. Not sure what to do yet
68 #return $class->search($query)->next;
69 my @cols = $class->_select_columns;
70 my @row = $class->storage->select_single($class->_table_name, \@cols, $query);
71 return (@row ? $class->_row_to_object(\@cols, \@row) : ());
76 delete $self->{_dirty_columns};
77 return unless $self->in_storage; # Don't reload if we aren't real!
78 my ($reload) = $self->find($self->id);
79 unless ($reload) { # If we got deleted in the mean-time
83 delete @{$self}{keys %$self};
84 @{$self}{keys %$reload} = values %$reload;
85 #$self->store_column($_ => $reload->get_column($_))
86 # foreach keys %{$self->_columns};
92 $self->throw( "Can't call id() as a class method" ) unless ref $self;
93 my @pk = $self->_ident_values;
94 return (wantarray ? @pk : $pk[0]);
98 return keys %{shift->_primaries};
107 Matt S. Trout <mst@shadowcatsystems.co.uk>
111 You may distribute this code under the same terms as Perl itself.