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私は simpleinjector 2.3.0.0 と .net 4.5 を使用しています。

私は、IEnumerable に依存する Factory と Thing のインスタンス、および unitofwork デコレータを登録しようとしています。（とりわけ）

ここに私の工場があります：

public class ThingFactory : IThingFactory
{
    private readonly IEnumerable<IThing> things;

    public ThingFactory (IEnumerable<IThing> things)
    {
        this.things= things;
    }

    public IThing GetThing(ThingType thingType)
    {
     return things.FirstOrDefault(t => t.IsApplicable(thingType));
    }
}

ここに IThing の私の実装があります

 public class ThingOne: IThing
{
     private IThingFactory thingFactory;

    public ThingOne(IThingFactory thingFactory)
    {
        this.thingFactory= thingFactory;
    }

    public void Execute(MyDto myDto)
    {
       //do stuff
      //get the next approiate IThing out of the factory and execute
    }

    public bool IsApplicable(ThingType thingType)
    {
        return thingType == ThingType.ThingOne;
    }

}

これに対する私の登録は

  container.RegisterAll<IThing>(
            from tp in typeof (IThing).Assembly.GetExportedTypes()
            where !tp.IsAbstract
            where typeof (IThing).IsAssignableFrom(tp)
            select tp);

   container.Register<IThingFactory , ThingFactory>();

これはまったく問題なく動作し、例外なくコンテナーを確認できます。ただし、次の登録もコンテナに追加すると、例外が発生します

 container.RegisterDecorator(typeof(ICommandHandler<,>),    
 typeof(UnitOfWorkDecorator<,>));

デコレータは、Nhibernate トランザクションを管理する Nhibernate UnitOFWork です (これは問題ではありません) (このパターンhttps://cuttingedge.it/blogs/steven/pivot/entry.php?id=91に従います) 。

  public class UnitOfWorkDecorator<TCommand, TResult>
    : ICommandHandler<TCommand, TResult> 
    where TCommand : ICommand
{

    public UnitOfWorkDecorator(
        ICommandHandler<TCommand, TResult> decoratedCommandHandler)
    {
        this.currentSessionContextService = currentSessionContextService;
        this.decoratedCommandHandler = decoratedCommandHandler;
    }

    public void Handle(TCommand command)
    {
          //start my nhibernate transaction
          decoratedCommandHandler.Handle(command);

          //commit the transaction                       
    }

とにかく、デコレータを追加すると、次の例外が発生します。私が電話するとき

  container.Verify();

しかし、デコレータの登録を削除すると、すべて問題ありません。

Topshelf v3.1.107.0, .NET Framework v4.0.30319.18052
Topshelf.Hosts.ConsoleRunHost Error: 0 : An exception occurred, System.Reflectio
n.TargetInvocationException: Exception has been thrown by the target of an invoc
ation. ---> System.InvalidOperationException: The configuration is invalid. Crea
ting the instance for type IThingManager failed. The registered delegate for t
ype IThingManager threw an exception. The registered delegate for type IThingFa
ctory threw an exception. The registered delegate for type IEnumerable<IThing> th
rew an exception. No registration for type ThingOne could be found a
nd an implicit registration could not be made.  ---> SimpleInjector.ActivationEx
ception: The registered delegate for type IThingManager threw an exception. Th
e registered delegate for type IThingFactory threw an exception. The registered d
elegate for type IEnumerable<IThing> threw an exception. No registration for type
ThingOne could be found and an implicit registration could not be m
ade.  ---> SimpleInjector.ActivationException: The registered delegate for type
IThingFactory threw an exception. The registered delegate for type IEnumerable<IThing>     
threw an exception. No registration for type ThingOne could be
found and an implicit registration could not be made.  ---> SimpleInjector.Activ
ationException: The registered delegate for type IEnumerable<IThing> threw an exc
eption. No registration for type ThingOne could be found and an impl
icit registration could not be made.  ---> SimpleInjector.ActivationException: N
o registration for type ThingOne could be found and an implicit regi
stration could not be made.

スタックトレース：

at SimpleInjector.Container.ThrowNotConstructableException(Type concreteType)
at SimpleInjector.Container.ThrowMissingInstanceProducerException(Type servic
eType)at SimpleInjector.Container.GetRegistration(Type serviceType, Boolean throwOn
 Failure)   at SimpleInjector.Advanced.ContainerControlledCollection`1.   
 <>c__DisplayClass1
0.<ToLazyInstanceProducer>b__f()   at System.Lazy`1.CreateValue()
at System.Lazy`1.LazyInitValue()     at     
SimpleInjector.Advanced.ContainerControlledCollection`1.<SimpleInjector.Ad
vanced.IContainerControlledCollection.GetRelationships>b__1(Lazy`1 p)
at System.Linq.Enumerable.WhereSelectListIterator`2.MoveNext()
at System.Linq.Enumerable.<SelectManyIterator>d__31`3.MoveNext()
at System.Linq.Enumerable.<DistinctIterator>d__81`1.MoveNext()
at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at SimpleInjector.Advanced.ContainerControlledCollection`1.SimpleInjector.Adv
anced.IContainerControlledCollection.GetRelationships()
at SimpleInjector.Extensions.Decorators.DecoratorHelpers.ContainerControlledC
ollectionRegistration.GetRelationshipsCore()
at SimpleInjector.Registration.GetRelationships()
at SimpleInjector.InstanceProducer.GetRelationships()
at SimpleInjector.Container.OnExpressionBuilt(ExpressionBuiltEventArgs e, Ins
tanceProducer instanceProducer)
at SimpleInjector.InstanceProducer.BuildExpressionInternal()
at System.Lazy`1.CreateValue()
at System.Lazy`1.LazyInitValue()
at SimpleInjector.InstanceProducer.BuildExpression()
--- End of inner exception stack trace ---
at SimpleInjector.InstanceProducer.BuildExpression()
at SimpleInjector.Advanced.DefaultConstructorInjectionBehavior.BuildParameter
Expression(ParameterInfo parameter)
at SimpleInjector.Registration.BuildParameterExpressionFor(ParameterInfo para
meter)
at SimpleInjector.Registration.<BuildNewExpression>b__1a(<>f__AnonymousTypef`
2 <>h__TransparentIdentifier18)
at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at SimpleInjector.Registration.BuildNewExpression(Type serviceType, Type impl
ementationType)
at SimpleInjector.Registration.BuildTransientExpression[TService,TImplementat
ion]()
at SimpleInjector.Lifestyles.TransientLifestyle.TransientLifestyleRegistratio
n`2.BuildExpression()
at SimpleInjector.InstanceProducer.BuildExpressionInternal()
at System.Lazy`1.CreateValue()
at System.Lazy`1.LazyInitValue()
at SimpleInjector.InstanceProducer.BuildExpression()
--- End of inner exception stack trace ---
at SimpleInjector.InstanceProducer.BuildExpression()
at SimpleInjector.Advanced.DefaultConstructorInjectionBehavior.BuildParameter
Expression(ParameterInfo parameter)
at SimpleInjector.Registration.BuildParameterExpressionFor(ParameterInfo para
meter)
at SimpleInjector.Registration.<BuildNewExpression>b__1a(<>f__AnonymousTypef`
2 <>h__TransparentIdentifier18)
at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at SimpleInjector.Registration.BuildNewExpression(Type serviceType, Type impl
ementationType)
at SimpleInjector.Registration.BuildTransientExpression[TService,TImplementat
ion]()
at SimpleInjector.Lifestyles.TransientLifestyle.TransientLifestyleRegistratio
n`2.BuildExpression()
at SimpleInjector.InstanceProducer.BuildExpressionInternal()
at System.Lazy`1.CreateValue()
at System.Lazy`1.LazyInitValue()
at SimpleInjector.InstanceProducer.BuildInstanceCreator(Object& createdInstan
ce)
at SimpleInjector.InstanceProducer.GetInstance()
--- End of inner exception stack trace ---
at SimpleInjector.InstanceProducer.GetInstance()
at SimpleInjector.InstanceProducer.Verify()
--- End of inner exception stack trace ---
at SimpleInjector.InstanceProducer.Verify()
at SimpleInjector.Container.VerifyProducers(InstanceProducer[] producersToVer
ify)
at SimpleInjector.Container.ValidateRegistrations()
at SimpleInjector.Container.Verify()

ご協力いただきありがとうございます

編集 - ThingManager はエントリ ポイントであり、次のようになります。

   public class ThingManager : IThingManager
{
    private readonly IThingFactory thingFactory;

    public ThingManager(IThingFactory thingFactory)
    {
        this.thingFactory = thingFactory;
    }

    public void Run(MyDto myDto)
    {
        var firstThing = thingFactory.GetThing(ThingType.ThingOne);
        firstThing.Execute(myDto);
    }
}
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