private ConstructorInfo GetTargetConstructor(IComponentContext context, ConcreteReflectionActivatorData data, IEnumerable <Parameter> parameters)
{
var constructors = data.ConstructorFinder.FindConstructors(data.ImplementationType);
var constructorBindings = GetConstructorBindings(_componentContext, parameters, constructors);
var validBindings = constructorBindings.Where(cb => cb.CanInstantiate).ToArray();
if (validBindings.Length == 0)
{
throw new DependencyResolutionException(GetBindingFailureMessage(constructorBindings, data));
}
return(data.ConstructorSelector.SelectConstructorBinding(validBindings).TargetConstructor);
}
public IEnumerable <IComponentRegistration> RegistrationsFor(Service service, Func <Service, IEnumerable <IComponentRegistration> > registrationAccessor)
{
if (!(service is IServiceWithType swt))
{
return(Enumerable.Empty <IComponentRegistration>());
}
var reg = _registrations.FirstOrDefault(x => x.Type == swt.ServiceType);
if (reg == null)
{
return(Enumerable.Empty <IComponentRegistration>());
}
var activatorRegistration = reg as IActivatorContainerRegistration;
if (activatorRegistration != null)
{
var registration = new ComponentRegistration(
Guid.NewGuid(),
new DelegateActivator(swt.ServiceType, (c, p) =>
{
var result = activatorRegistration.Activator(_resolver.WithContext(c));
return(result);
}),
reg.Lifetime == Lifetime.Request ? PerRequestLifetime() : reg.Lifetime == Lifetime.Singleton ? (IComponentLifetime) new RootScopeLifetime() : new CurrentScopeLifetime(),
reg.Lifetime == Lifetime.Request || reg.Lifetime == Lifetime.Singleton ? InstanceSharing.Shared : InstanceSharing.None,
reg.Lifetime == Lifetime.ExternallyOwned ? InstanceOwnership.ExternallyOwned : InstanceOwnership.OwnedByLifetimeScope,
new[] { service },
new Dictionary <string, object>());
return(new IComponentRegistration[] { registration });
}
else
{
var activatorData = new ConcreteReflectionActivatorData(reg.Type);
var registration = new ComponentRegistration(
Guid.NewGuid(),
activatorData.Activator,
reg.Lifetime == Lifetime.Request ? PerRequestLifetime() : reg.Lifetime == Lifetime.Singleton ? (IComponentLifetime) new RootScopeLifetime() : new CurrentScopeLifetime(),
reg.Lifetime == Lifetime.Request || reg.Lifetime == Lifetime.Singleton ? InstanceSharing.Shared : InstanceSharing.None,
reg.Lifetime == Lifetime.ExternallyOwned ? InstanceOwnership.ExternallyOwned : InstanceOwnership.OwnedByLifetimeScope,
new[] { service },
new Dictionary <string, object>());
return(new IComponentRegistration[] { registration });
}
}
private string GetBindingFailureMessage(IEnumerable <ConstructorParameterBinding> constructorBindings, ConcreteReflectionActivatorData data)
{
var reasons = new StringBuilder();
foreach (var invalid in constructorBindings.Where(cb => !cb.CanInstantiate))
{
reasons.AppendLine();
reasons.Append(invalid.Description);
}
return(string.Format("NoConstructorsBindable", data.ConstructorFinder, data.ImplementationType, reasons));
}
internal static void MapActivatorData(Type serviceType, ConcreteReflectionActivatorData concreteReflectionActivatorData)
{
ActivatorCache.TryAdd(serviceType, concreteReflectionActivatorData);
}