1 package DBIx::Class::InflateColumn;
5 use base qw/DBIx::Class::Row/;
8 my ($self, $col, $attrs) = @_;
9 die "No such column $col to inflate" unless $self->has_column($col);
10 die "inflate_column needs attr hashref" unless ref $attrs eq 'HASH';
11 $self->column_info($col)->{_inflate_info} = $attrs;
12 $self->mk_group_accessors('inflated_column' => $col);
16 sub _inflated_column {
17 my ($self, $col, $value) = @_;
18 return $value unless defined $value; # NULL is NULL is NULL
19 my $info = $self->column_info($col) || die "No column info for $col";
20 return $value unless exists $info->{_inflate_info};
21 my $inflate = $info->{_inflate_info}{inflate};
22 die "No inflator for $col" unless defined $inflate;
23 return $inflate->($value, $self);
26 sub _deflated_column {
27 my ($self, $col, $value) = @_;
28 return $value unless ref $value; # If it's not an object, don't touch it
29 my $info = $self->column_info($col) || die "No column info for $col";
30 return $value unless exists $info->{_inflate_info};
31 my $deflate = $info->{_inflate_info}{deflate};
32 die "No deflator for $col" unless defined $deflate;
33 return $deflate->($value, $self);
36 sub get_inflated_column {
37 my ($self, $col) = @_;
38 $self->throw("$col is not an inflated column") unless
39 exists $self->column_info($col)->{_inflate_info};
41 return $self->{_inflated_column}{$col}
42 if exists $self->{_inflated_column}{$col};
43 return $self->{_inflated_column}{$col} =
44 $self->_inflated_column($col, $self->get_column($col));
47 sub set_inflated_column {
48 my ($self, $col, @rest) = @_;
49 my $ret = $self->_inflated_column_op('set', $col, @rest);
53 sub store_inflated_column {
54 my ($self, $col, @rest) = @_;
55 my $ret = $self->_inflated_column_op('store', $col, @rest);
59 sub _inflated_column_op {
60 my ($self, $op, $col, $obj) = @_;
61 my $meth = "${op}_column";
63 delete $self->{_inflated_column}{$col};
64 return $self->$meth($col, $obj);
67 my $deflated = $self->_deflated_column($col, $obj);
68 # Do this now so we don't store if it's invalid
70 $self->{_inflated_column}{$col} = $obj;
71 $self->$meth($col, $deflated);
76 my ($class, $attrs, @rest) = @_;
78 foreach my $key (keys %$attrs) {
79 if (ref $attrs->{$key}
80 && exists $class->column_info($key)->{_inflate_info}) {
81 $attrs->{$key} = $class->_deflated_column($key, $attrs->{$key});
84 return $class->next::method($attrs, @rest);