Question

我们假设我有以下课程：

public class AsyncEntityManager<E> : EntityManager<E>, IAsyncEntityManager<E>
      where E : IPersistableEntity
{
     public AsyncEntityManager(ICollection<IPersistenceStrategy<E>> strategies, ILogger logger) : base(strategies, logger) { }
}

在这种情况下如何注入集合？

这就是我的尝试：

internal class PersistenceModule : ApplicationModule
{
     public override void Load()
     {
          Kernel.Bind<ICollection<IPersistenceStrategy<User>>>().ToMethod(c => new IPersistenceStrategy<User>[] {
               (IPersistenceStrategy<User>)c.Kernel.GetService(typeof(DynamoDBStrategy<User>))
          });

          Kernel.Bind<IAsyncEntityManager<User>>().To<AsyncEntityManager<User>>();
     }
}

然而，该集合没有元素注入。它是不 null，但它根本没有任何元素。尽管如此，ILoggeer正在被注射得很好。

Answer 1

For anyone interested, it seems Ninject can handle multipible bindings to the same interface:

Kernel.Bind<IPersistenceStrategy<User>>().To<DynamoDBStrategy<User>>();
Kernel.Bind<IPersistenceStrategy<User>>().To<SQLServerStrategy<User>>();

This will be injected as a IPersistenceStrategy<User>[], which is then casted to ICollection<IPersistenceStrategy<User>>

使用Ninject注入一个集合

1 个答案: