private void InitializeFields()
{
if (_builder == null)
{
_builder = _parent.Builder;
}
if (_locator == null)
{
_locator = new Locator(_parent.Locator);
}
if (!_locator.Contains(typeof(ILifetimeContainer), SearchMode.Local))
{
_locator.Add(typeof(ILifetimeContainer), _lifetime);
}
LocateContainer(typeof(CompositionContainer));
LocateContainer(GetType());
}
static void FindInLocator(Predicate <KeyValuePair <object, object> > predicate,
IReadWriteLocator results,
IEnumerable <KeyValuePair <object, object> > currentLocator)
{
foreach (KeyValuePair <object, object> kvp in currentLocator)
{
if (!results.Contains(kvp.Key) && predicate(kvp))
{
results.Add(kvp.Key, kvp.Value);
}
}
}
/// <summary>
/// Adds a service that will not be created until the first time it is requested.
/// </summary>
/// <param name="serviceType">The type of service</param>
/// <param name="registerAs">The type to register the service as</param>
public void AddOnDemand(Type serviceType, Type registerAs)
{
Guard.ArgumentNotNull(serviceType, "serviceType");
if (registerAs == null)
{
registerAs = serviceType;
}
DependencyResolutionLocatorKey key = new DependencyResolutionLocatorKey(registerAs, null);
if (locator.Contains(key, SearchMode.Local))
{
throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Properties.Resources.DuplicateService, registerAs.FullName));
}
DemandAddPlaceholder placeholder = new DemandAddPlaceholder(serviceType);
locator.Add(key, placeholder);
container.Add(placeholder);
}
/// <summary>
/// Determines if an object of the given <paramref name="type"/> and with
/// the specified <paramref name="objectId"/> exists
/// in the container.
/// </summary>
/// <param name="objectId">The identifier to search for.</param>
/// <param name="type">The type of the object to search for.</param>
/// <returns><see langword="true"/> if the key exists in the container; <see langword="false"/> otherwise.</returns>
public bool Contains(Type type, string objectId)
{
return(locator.Contains(new DependencyResolutionLocatorKey(type, objectId)));
}