[Question]: Can I export decorators with Attributes

Consider a situation where I have a default implementation for an interface and some decorators, now I could use grace to register my decorators like the following:

public void ConfigureContainer(IInjectionScope injection)
        {
            injection.Configure(c =>
            {
                c.ExportDecorator<ISomeInterface>(
                    request => new AuditDecorator(request));
            });
        }

Is there any possible solutions to do:

[Audit]
public SomeImpl : ISomeInterface {
// omitted code
}

public class AuditDecorator : ISomeInterface{

    public AuditDecorator(ISomeInterface next)
    }
}

// flag attribute to use to map to the decorator
public class AudtiAttribute : Attribute{ } 

• currently I wrote a hand-written method which creates factories using reflection. (borrowed from Vladimir Khorikov’s CQRS In Practice course)

I don’t know how efficient this is, I want to know is there any way to give all the boilerplate code to the IoC?

[ipjohnson]

Ok glad that worked with slightly different syntax. I’ll open an issue up to add When configuration to the ExportDecorator func. That’s just an over sight on my part.

[ipjohnson]

So essentially only apply the AuditDecorator when the implementation is attributed with the AuditAttribute?

If that’s the case you can use the When.MeetsCondition method to decide when the decorator should be applied.

You could do something like this

.When.MeetsCondition((strategy,staticContext) => strategy.ActivationType.GetCustomAttributes().Any(a => a is AuditAttribute));