I used following statement to decorate all my ICommandHandlers<> with Decorator1<>:
ObjectFactory.Configure(x => { x.For(typeof(ICommandHandler<>)).DecorateAllWith(typeof(Decorator1<>)); });
But because Decorator1<> implements ICommandHandlers<>, the Decorator1<> class decorates itself too.
So, the problem is that the Decorator1 registers inadvertently, when I register all the ICommandHandler<>'s. How can I filter DecorateWithAll()to decorate all ICommandHandler<>, except Decorator1<>?
ObjectFactory is obsolete.
You can exclude Decorator1<> from being registered as a vanilla ICommandHandler<> with code like this:
var container = new Container(config => { config.Scan(scanner => { scanner.AssemblyContainingType(typeof(ICommandHandler<>)); scanner.Exclude(t => t == typeof(Decorator1<>)); scanner.ConnectImplementationsToTypesClosing(typeof(ICommandHandler<>)); }); config.For(typeof(ICommandHandler<>)).DecorateAllWith(typeof(Decorator1<>)); });
UPDATE
For multiple modules you can use The Registry DSL to compose a portion of your application
using StructureMap; using StructureMap.Configuration.DSL; public class CommandHandlerRegistry : Registry { public CommandHandlerRegistry() { Scan(scanner => { scanner.AssemblyContainingType(typeof(ICommandHandler<>)); scanner.Exclude(t => t == typeof(Decorator1<>)); scanner.ConnectImplementationsToTypesClosing(typeof(ICommandHandler<>)); }); For(typeof(ICommandHandler<>)).DecorateAllWith(typeof(Decorator1<>)); } }
Only the Composition Root needs to be aware of all the Registry implementations.
var container = new Container(config => { config.AddRegistry<CommandHandlerRegistry>(); });
You even have the option of finding all Registry instances at runtime (you still need to ensure all the required assemblies are loaded)
var container = new Container(config => { var registries = ( from assembly in AppDomain.CurrentDomain.GetAssemblies() from type in assembly.DefinedTypes where typeof(Registry).IsAssignableFrom(type) where !type.IsAbstract where !type.Namespace.StartsWith("StructureMap") select Activator.CreateInstance(type)) .Cast<Registry>(); foreach (var registry in registries) { config.AddRegistry(registry); } });
