/// <summary>
/// Registriert ein Delegate zum Erzeugen einer Liste von Dienstinstanzen.
/// </summary>
/// <typeparam name="T">Typ des Dienstes.</typeparam>
/// <param name="provider">Das Delegate, das Registriert werden soll.</param>
/// <param name="addDefaultSingleProvider">
/// Zusätzliches Delegate zum Erzeugen einer einzelnen Instanz
/// hinzufügen oder nicht.
/// </param>
/// <returns>Diese Instanz.</returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="provider" /> ist eine <see langword="null" /> Referenz.
/// </exception>
/// <exception cref="DuplicateWaitObjectException">
/// Ein Delegate wurde bereits registriert.
/// </exception>
public DelegateServiceLocatorWrapper RegisterMulti <T>(MultiInstanceProvider <T> provider,
bool addDefaultSingleProvider)
{
if (provider == null)
{
throw new ArgumentNullException("provider");
}
this.InvokeForFactoryLists(
(singleList, multiList, args) =>
{
var factory = multiList.FirstOrDefault(f => args.ServiceType
.Equals(f.SERVICE_TYPE));
if (factory != null)
{
throw new DuplicateWaitObjectException(args.ServiceType
.FullName);
}
multiList.Add(new MultiInstanceFactory <T>(args.InstanceProvider));
}, new
{
InstanceProvider = provider,
ServiceType = typeof(T),
});
if (addDefaultSingleProvider)
{
this.RegisterSingle <T>(MultiToSingle <T>(provider),
false);
}
return(this);
}
private static SingleInstanceProvider <T> MultiToSingle <T>(MultiInstanceProvider <T> multiProvider)
{
if (multiProvider != null)
{
return(new SingleInstanceProvider <T>(
(sender, key) =>
{
if (DBNull.Value.Equals(key))
{
key = null;
}
if (key != null)
{
throw new ArgumentException("key");
}
var instances = multiProvider(sender);
if (instances == null)
{
throw new ServiceActivationException(typeof(T),
key);
}
return instances.Single();
}));
}
return(null);
}
/// <summary>
/// Registers a provider for resolving a list of instances of a service.
/// </summary>
/// <typeparam name="T">Type of the service.</typeparam>
/// <param name="provider">The provider to register.</param>
/// <param name="registerDefaultSingleProvider">
/// Also register a default single instance provider or not.
/// </param>
/// <returns>That instance.</returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="provider" /> is <see langword="null" />.
/// </exception>
/// <exception cref="InvalidOperationException">
/// A provider is already registrated for the service type.
/// </exception>
public DelegateServiceLocator RegisterMultiProvider <T>(MultiInstanceProvider <T> provider,
bool registerDefaultSingleProvider)
{
if (provider == null)
{
throw new ArgumentNullException("provider");
}
lock (this._SYNC)
{
Type serviceType = typeof(T);
if (this._MULTI_PROVIDERS.ContainsKey(serviceType))
{
throw new InvalidOperationException();
}
this._MULTI_PROVIDERS
.Add(serviceType,
new InstanceProvider(serviceType, provider));
}
if (registerDefaultSingleProvider)
{
this.RegisterSingleProvider <T>(MultiToSingle <T>(provider),
false);
}
return(this);
}
// Private Methods (2)
private static SingleInstanceProvider <T> MultiToSingle <T>(MultiInstanceProvider <T> provider)
{
return(new SingleInstanceProvider <T>(delegate(DelegateServiceLocator locator, object key)
{
Type serviceType = typeof(T);
IEnumerable <T> result = provider(locator, key);
if (result == null)
{
throw new ServiceActivationException(serviceType, key);
}
try
{
return CollectionHelper.Single <T>(result);
}
catch (Exception ex)
{
throw new ServiceActivationException(serviceType, key, ex);
}
}));
}
private static SingleInstanceProvider <T> MultiToSingle <T>(MultiInstanceProvider <T> provider)
{
return((locator, key) =>
{
var serviceType = typeof(T);
var result = provider(locator, key);
if (result == null)
{
throw new ServiceActivationException(serviceType, key);
}
try
{
return result.Single();
}
catch (Exception ex)
{
throw new ServiceActivationException(serviceType, key, ex);
}
});
}
/// <summary>
/// Registriert ein Delegate zum Erzeugen einer Liste von Dienstinstanzen
/// und fügt zusätzlich ein Standard-Delegate zum Erzeugen einer einzelnen Instanz
/// hinzu.
/// </summary>
/// <typeparam name="T">Typ des Dienstes.</typeparam>
/// <param name="provider">Das Delegate, das Registriert werden soll.</param>
/// <returns>Diese Instanz.</returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="provider" /> ist eine <see langword="null" /> Referenz.
/// </exception>
/// <exception cref="DuplicateWaitObjectException">
/// Ein Delegate wurde bereits registriert.
/// </exception>
public DelegateServiceLocatorWrapper RegisterMulti <T>(MultiInstanceProvider <T> provider)
{
return(this.RegisterMulti <T>(provider,
true));
}
internal MultiInstanceFactory(MultiInstanceProvider <T> provider)
: base(typeof(T),
provider)
{
}
