1 package # hide from PAUSE
2 DBIx::Class::Componentised;
7 use base 'Class::C3::Componentised';
10 use DBIx::Class::_Util 'get_subname';
11 use DBIx::Class::Carp '^DBIx::Class|^Class::C3::Componentised';
14 # this warns of subtle bugs introduced by UTF8Columns hacky handling of store_column
15 # if and only if it is placed before something overriding store_column
17 # and also enforces C3 mro on all components
21 my ($target, @complist) = @_;
23 # we already did load the component
24 my $keep_checking = ! (
25 $target->isa ('DBIx::Class::UTF8Columns')
27 $target->isa ('DBIx::Class::ForceUTF8')
32 while ($keep_checking && @complist) {
34 @target_isa = do { no strict 'refs'; @{"$target\::ISA"} }
37 my $comp = pop @complist;
39 # warn here on use of either component, as we have no access to ForceUTF8,
40 # the author does not respond, and the Catalyst wiki used to recommend it
41 for (qw/DBIx::Class::UTF8Columns DBIx::Class::ForceUTF8/) {
42 if ($comp->isa ($_) ) {
43 $keep_checking = 0; # no use to check from this point on
44 carp_once "Use of $_ is strongly discouraged. See documentation of DBIx::Class::UTF8Columns for more info\n"
45 unless $ENV{DBIC_UTF8COLUMNS_OK};
50 # something unset $keep_checking - we got a unicode mangler
51 if (! $keep_checking) {
53 my $base_store_column = do { require DBIx::Class::Row; DBIx::Class::Row->can ('store_column') };
56 for my $existing_comp (@target_isa) {
57 my $sc = $existing_comp->can ('store_column')
60 if ($sc ne $base_store_column) {
61 my ($definer) = get_subname($sc);
62 push @broken, ($definer eq $existing_comp)
64 : "$existing_comp (via $definer)"
69 carp "Incorrect loading order of $comp by $target will affect other components overriding 'store_column' ("
70 . join (', ', @broken)
71 .'). Refer to the documentation of DBIx::Class::UTF8Columns for more info'
75 unshift @target_isa, $comp;
78 # only examine from $_[2] onwards
79 # C::C3::C already sets c3 on $_[1]
80 mro::set_mro( $_ => 'c3' ) for grep {
81 $mro_already_set->{$_} ? 0 : ( $mro_already_set->{$_} = 1 )
84 $class->next::method(@_);