use warnings;
use base qw/Class::Data::Inheritable/;
-use DBIx::Class;
+use base qw/DBIx::Class/;
-__PACKAGE__->mk_classdata('_class_registrations' => {});
+__PACKAGE__->load_components(qw/Exception Componentised/);
+__PACKAGE__->mk_classdata('class_registrations' => {});
+
+=head1 NAME
+
+DBIx::Class::Schema - composable schemas
+
+=head1 SYNOPSIS
+
+ in My/Schema.pm
+
+ package My::Schema;
+
+ use base qw/DBIx::Class::Schema/;
+
+ __PACKAGE__->load_classes(qw/Foo Bar Baz/);
+
+ in My/Schema/Foo.pm
+
+ package My::Schema::Foo;
+
+ use base qw/DBIx::Class::Core/;
+
+ __PACKAGE__->table('foo');
+ ...
+
+ in My/DB.pm
+
+ use My::Schema;
+
+ My::Schema->compose_connection('My::DB', $dsn, $user, $pass, $attrs);
+
+ then in app code
+
+ my @obj = My::DB::Foo->search({}); # My::DB::Foo isa My::Schema::Foo My::DB
+
+=head1 DESCRIPTION
+
+=head1 METHODS
+
+=over 4
+
+=cut
sub register_class {
my ($class, $name, $to_register) = @_;
- my %reg = %{$class->_class_registrations};
+ my %reg = %{$class->class_registrations};
$reg{$name} = $to_register;
- $class->_class_registrations(\%reg);
+ $class->class_registrations(\%reg);
+}
+
+sub registered_classes {
+ return values %{shift->class_registrations};
}
sub load_classes {
my $class = shift;
my @comp = grep { $_ !~ /^#/ } @_;
+ unless (@comp) {
+ eval "require Module::Find;";
+ $class->throw("No arguments to load_classes and couldn't load".
+ " Module::Find ($@)") if $@;
+ @comp = map { substr $_, length "${class}::" }
+ Module::Find::findallmod($class);
+ }
foreach my $comp (@comp) {
my $comp_class = "${class}::${comp}";
- eval "use $comp_class";
- die $@ if $@;
+ eval "use $comp_class"; # If it fails, assume the user fixed it
$class->register_class($comp => $comp_class);
}
}
sub compose_connection {
my ($class, $target, @info) = @_;
+ my $conn_class = "${target}::_db";
+ $class->setup_connection_class($conn_class, @info);
+ my %reg = %{ $class->class_registrations };
+ my %target;
+ my %map;
+ while (my ($comp, $comp_class) = each %reg) {
+ my $target_class = "${target}::${comp}";
+ $class->inject_base($target_class, $conn_class, $comp_class);
+ $target_class->table($comp_class->table);
+ @map{$comp, $comp_class} = ($target_class, $target_class);
+ }
{
no strict 'refs';
- unshift(@{"${target}::ISA"}, 'DBIx::Class');
+ *{"${target}::class"} =
+ sub {
+ my ($class, $to_map) = @_;
+ return $map{$to_map};
+ };
+ *{"${target}::classes"} = sub { return \%map; };
}
+ $conn_class->class_resolver($target);
+}
+
+sub setup_connection_class {
+ my ($class, $target, @info) = @_;
+ $class->inject_base($target => 'DBIx::Class');
$target->load_components('DB');
$target->connection(@info);
- my %reg = %{ $class->_class_registrations };
- while (my ($comp, $comp_class) = each %reg) {
- my $target_class = "${target}::${comp}";
- {
- no strict 'refs';
- unshift(@{"${target_class}::ISA"}, $comp_class, $target);
- }
- }
}
1;
+
+=back
+
+=head1 AUTHORS
+
+Matt S. Trout <mst@shadowcatsystems.co.uk>
+
+=head1 LICENSE
+
+You may distribute this code under the same terms as Perl itself.
+
+=cut
+