/// <summary>
/// Creates a new instance
/// </summary>
/// <param name="descriptor"></param>
/// <param name="provider"></param>
/// <returns></returns>
internal static object GetInstance(this ServiceDescriptor descriptor, IFactoryProvider provider)
{
ConstructorInfo item = descriptor.ImplementationType.GetConstructors().FirstOrDefault(o => o.IsPublic && !o.IsStatic);
if (item != null)
{
List <object> args = new List <object>();
foreach (var attr in item.GetParameters())
{
var attr_type = attr.ParameterType;
args.Add(provider.Get(attr_type) ?? attr.DefaultValue);
}
return(args.Count > 0 ?
Activator.CreateInstance(descriptor.ImplementationType, args.ToArray()) :
Activator.CreateInstance(descriptor.ImplementationType));
}
else
{
if (provider.ThrowNotExist)
{
throw new FactoryConfigurationException($"Implementation {descriptor.ImplementationType.Name} not have public constructors");
}
else
{
return(default);
/// <summary>
/// Gets builder from the provider by the specified factory identifier and builder identifier.
/// <para>
/// The type of the factory identifier represents the identifier of the factory collection.
/// </para>
/// </summary>
/// <param name="provider">The factory provider.</param>
/// <param name="factoryId">The identifier of the factory.</param>
/// <param name="builderId">The identifier of the builder.</param>
public static TBuilder GetBuilder <TBuilder, TFactoryId, TBuilderId>(this IFactoryProvider provider, TFactoryId factoryId, TBuilderId builderId) where TBuilder : IBuilder
{
if (provider == null)
{
throw new ArgumentNullException(nameof(provider));
}
IFactoryCollection <TFactoryId> collection = provider.Get <TFactoryId>();
var factory = collection.Get <IFactory <TBuilderId> >(factoryId);
return(factory.Get <TBuilder>(builderId));
}
