/// <summary>
/// Create a default <see cref="UnityContainer"/>.
/// </summary>
public UnityContainer()
{
_root = this;
// WithLifetime
LifetimeContainer = new LifetimeContainer(this);
_typeLifetimeManager = TransientLifetimeManager.Instance;
_factoryLifetimeManager = TransientLifetimeManager.Instance;
_instanceLifetimeManager = new ContainerControlledLifetimeManager();
// Registrations
_registrations = new Registrations(ContainerInitialCapacity);
// Context
_context = new ContainerContext(this);
// Methods
_get = Get;
_getGenericRegistration = GetOrAddGeneric;
_isExplicitlyRegistered = IsExplicitlyRegisteredLocally;
IsTypeExplicitlyRegistered = IsTypeTypeExplicitlyRegisteredLocally;
GetRegistration = GetOrAdd;
Register = AddOrUpdate;
GetPolicy = Get;
SetPolicy = Set;
ClearPolicy = Clear;
// Build Strategies
_strategies = new StagedStrategyChain <BuilderStrategy, UnityBuildStage>
{
{ // Array
new ArrayResolveStrategy(
typeof(UnityContainer).GetTypeInfo().GetDeclaredMethod(nameof(ResolveArray)),
typeof(UnityContainer).GetTypeInfo().GetDeclaredMethod(nameof(ResolveGenericArray))),
UnityBuildStage.Enumerable
},
{ new BuildKeyMappingStrategy(), UnityBuildStage.TypeMapping }, // Mapping
{ new LifetimeStrategy(), UnityBuildStage.Lifetime }, // WithLifetime
{ new BuildPlanStrategy(), UnityBuildStage.Creation } // Build
};
// Update on change
_strategies.Invalidated += OnStrategiesChanged;
_strategiesChain = _strategies.ToArray();
// Default Policies and Strategies
SetDefaultPolicies(this);
Set(typeof(Func <>), All, typeof(LifetimeManager), new PerResolveLifetimeManager());
Set(typeof(Func <>), All, typeof(ResolveDelegateFactory), (ResolveDelegateFactory)DeferredFuncResolverFactory.DeferredResolveDelegateFactory);
Set(typeof(Lazy <>), All, typeof(ResolveDelegateFactory), (ResolveDelegateFactory)GenericLazyResolverFactory.GetResolver);
Set(typeof(IEnumerable <>), All, typeof(ResolveDelegateFactory), EnumerableResolver.Factory);
// Register this instance
((IUnityContainer)this).RegisterInstance(typeof(IUnityContainer), null, this, _containerManager);
}
/// <inheritdoc />
IUnityContainer IUnityContainerAsync.RegisterInstance(IEnumerable <Type> interfaces, string name, object instance, IInstanceLifetimeManager lifetimeManager)
{
// Validate input
// TODO: Move to diagnostic
if (null == interfaces && null == instance)
{
throw new ArgumentNullException(nameof(interfaces));
}
// Validate lifetime manager
if (null == lifetimeManager)
{
lifetimeManager = new ContainerControlledLifetimeManager();
}
if (((LifetimeManager)lifetimeManager).InUse)
{
throw new InvalidOperationException(LifetimeManagerInUse);
}
((LifetimeManager)lifetimeManager).SetValue(instance, LifetimeContainer);
// Create registration and add to appropriate storage
var mappedToType = instance?.GetType();
var container = lifetimeManager is SingletonLifetimeManager ? _root : this;
var registration = new ExplicitRegistration(mappedToType, (LifetimeManager)lifetimeManager);
// If Disposable add to container's lifetime
if (lifetimeManager is IDisposable manager)
{
container.LifetimeContainer.Add(manager);
}
// Register interfaces
var replaced = container.AddOrReplaceRegistrations(interfaces, name, registration)
.ToArray();
// Release replaced registrations
if (0 != replaced.Length)
{
Task.Factory.StartNew(() =>
{
foreach (ImplicitRegistration previous in replaced)
{
if (0 == previous.Release() && previous.LifetimeManager is IDisposable disposable)
{
// Dispose replaced lifetime manager
container.LifetimeContainer.Remove(disposable);
disposable.Dispose();
}
}
});
}
return(this);
}
/// <inheritdoc />
IUnityContainer IUnityContainer.RegisterInstance(Type type, string name, object instance, IInstanceLifetimeManager lifetimeManager)
{
var mappedToType = instance?.GetType();
var typeFrom = type ?? mappedToType;
try
{
// Validate input
if (null == instance)
{
throw new ArgumentNullException(nameof(instance));
}
if (null == lifetimeManager)
{
lifetimeManager = new ContainerControlledLifetimeManager();
}
if (((LifetimeManager)lifetimeManager).InUse)
{
throw new InvalidOperationException(LifetimeManagerInUse);
}
((LifetimeManager)lifetimeManager).SetValue(instance, LifetimeContainer);
// Create registration and add to appropriate storage
var container = lifetimeManager is SingletonLifetimeManager ? _root : this;
var registration = new ContainerRegistration(null, mappedToType, ((LifetimeManager)lifetimeManager));
// Add or replace existing
var previous = container.Register(typeFrom, name, registration);
if (previous is ContainerRegistration old &&
old.LifetimeManager is IDisposable disposable)
{
// Dispose replaced lifetime manager
container.LifetimeContainer.Remove(disposable);
disposable.Dispose();
}
// If Disposable add to container's lifetime
if (lifetimeManager is IDisposable manager)
{
container.LifetimeContainer.Add(manager);
}
// Check what strategies to run
registration.BuildChain = _strategiesChain.ToArray()
.Where(strategy => strategy.RequiredToResolveInstance(this, registration))
.ToArray();
// Raise event
container.RegisteringInstance?.Invoke(this, new RegisterInstanceEventArgs(typeFrom, instance,
name, ((LifetimeManager)lifetimeManager)));
}
catch (Exception ex)
{
var parts = new List <string>();
if (null != name)
{
parts.Add($" '{name}'");
}
if (null != lifetimeManager && !(lifetimeManager is TransientLifetimeManager))
{
parts.Add(lifetimeManager.ToString());
}
var message = $"Error in RegisterInstance<{typeFrom?.Name}>({string.Join(", ", parts)})";
throw new InvalidOperationException(message, ex);
}
return(this);
}