Actually do something useful with the engine_traits parameter, by appling a role...

[gitmo/MooseX-Storage.git] / lib / MooseX / Storage / Basic.pm

diff --git a/lib/MooseX/Storage/Basic.pm b/lib/MooseX/Storage/Basic.pm
index 686772b..a803e74 100644 (file)
--- a/lib/MooseX/Storage/Basic.pm
+++ b/lib/MooseX/Storage/Basic.pm
@@ -7,14 +7,14 @@ our $VERSION   = '0.18';
 our $AUTHORITY = 'cpan:STEVAN';
 
 sub pack {
-    my ( $self, @args ) = @_;
-    my $e = $self->_storage_get_engine( object => $self );
-    $e->collapse_object(@args);
+    my ( $self, %args ) = @_;
+    my $e = $self->_storage_get_engine_class(%args)->new( object => $self );
+    $e->collapse_object(%args);
 }
 
 sub unpack {
     my ($class, $data, %args) = @_;
-    my $e = $class->_storage_get_engine(class => $class);
+    my $e = $class->_storage_get_engine_class(%args)->new(class => $class);
     
     $class->_storage_construct_instance( 
         $e->expand_object($data, %args), 
@@ -22,9 +22,26 @@ sub unpack {
     );
 }
 
-sub _storage_get_engine {
-    my $self = shift;
-    MooseX::Storage::Engine->new( @_ );
+sub _storage_get_engine_class {
+    my ($self, %args) = @_;
+
+    my $default = 'MooseX::Storage::Engine';
+
+    return $default
+        unless (
+            exists $args{engine_traits} 
+         && ref($args{engine_traits}) eq 'ARRAY'
+         && scalar(@{$args{engine_traits}})
+    );
+    
+    my @roles = map { sprintf("%s::Trait::%s", $default, $_) }
+        @{$args{engine_traits}};
+    
+    Moose::Meta::Class->create_anon_class(
+        superclasses => [$default],
+        roles => [ @roles ],
+        cache => 1,
+    )->name;
 }
 
 sub _storage_construct_instance {
@@ -82,7 +99,14 @@ but the exported C<Storage> function.
 
 =over 4
 
-=item B<pack>
+=item B<pack ([ disable_cycle_check => 1])>
+
+Providing the C<disable_cycle_check> argument disables checks for any cyclical
+references. The current implementation for this check is rather naive, so if
+you know what you are doing, you can bypass this check.
+
+This trait is applied on a perl-case basis. To set this flag for all objects
+that inherit from this role, see L<MooseX::Storage::Traits::DisableCycleDetection>.
 
 =item B<unpack ($data [, insert => { key => val, ... } ] )>