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我有一個應用程序借用了John Papa Code Camper應用程序中的大量代碼。在他的應用程序中，他使用Repository工廠來提供新的存儲庫或現有存儲庫（如果已存在於緩存中）。對我來說，這似乎過於複雜，我想知道如果我可以使用Unity來做同樣的事情。下面是我目前使用的代碼示例：從存儲庫工廠轉換爲EF的IOC解決方案？
在UOW他有這個代碼來獲取回購：
public IRepository<Answer> Answers { get { return GetStandardRepo<Answer>(); } }
此代碼來調用庫提供商：
protected IRepositoryProvider RepositoryProvider { get; set; }
protected IRepository<T> GetStandardRepo<T>() where T : class
{
return RepositoryProvider.GetRepositoryForEntityType<T>();
}
protected T GetRepo<T>() where T : class
{
return RepositoryProvider.GetRepository<T>();
}
以下版本庫提供者：
public class RepositoryProvider : IRepositoryProvider
{
public RepositoryProvider(RepositoryFactories repositoryFactories)
{
_repositoryFactories = repositoryFactories;
Repositories = new Dictionary<Type, object>();
}
//public RepositoryProvider(RepositoryFactories repositoryFactories)
//{
// _repositoryFactories = repositoryFactories;
// Repositories = new Dictionary<Type, object>();
//}
/// <summary>
/// Get and set the <see cref="DbContext"/> with which to initialize a repository
/// if one must be created.
/// </summary>
public DbContext DbContext { get; set; }
/// <summary>
/// Get or create-and-cache the default <see cref="IRepository{T}"/> for an entity of type T.
/// </summary>
/// <typeparam name="T">
/// Root entity type of the <see cref="IRepository{T}"/>.
/// </typeparam>
/// <remarks>
/// If can't find repository in cache, use a factory to create one.
/// </remarks>
public IRepository<T> GetRepositoryForEntityType<T>() where T : class
{
return GetRepository<IRepository<T>>(
_repositoryFactories.GetRepositoryFactoryForEntityType<T>());
}
/// <summary>
/// Get or create-and-cache a repository of type T.
/// </summary>
/// <typeparam name="T">
/// Type of the repository, typically a custom repository interface.
/// </typeparam>
/// <param name="factory">
/// An optional repository creation function that takes a DbContext argument
/// and returns a repository of T. Used if the repository must be created and
/// caller wants to specify the specific factory to use rather than one
/// of the injected <see cref="RepositoryFactories"/>.
/// </param>
/// <remarks>
/// Looks for the requested repository in its cache, returning if found.
/// If not found, tries to make one using <see cref="MakeRepository{T}"/>.
/// </remarks>
public virtual T GetRepository<T>(Func<DbContext, object> factory = null) where T : class
{
// Look for T dictionary cache under typeof(T).
object repoObj;
Repositories.TryGetValue(typeof(T), out repoObj);
if (repoObj != null)
{
return (T)repoObj;
}
// Not found or null; make one, add to dictionary cache, and return it.
return MakeRepository<T>(factory, DbContext);
}
/// <summary>
/// Get the dictionary of repository objects, keyed by repository type.
/// </summary>
/// <remarks>
/// Caller must know how to cast the repository object to a useful type.
/// <p>This is an extension point. You can register fully made repositories here
/// and they will be used instead of the ones this provider would otherwise create.</p>
/// </remarks>
protected Dictionary<Type, object> Repositories { get; private set; }
/// <summary>Make a repository of type T.</summary>
/// <typeparam name="T">Type of repository to make.</typeparam>
/// <param name="dbContext">
/// The <see cref="DbContext"/> with which to initialize the repository.
/// </param>
/// <param name="factory">
/// Factory with <see cref="DbContext"/> argument. Used to make the repository.
/// If null, gets factory from <see cref="_repositoryFactories"/>.
/// </param>
/// <returns></returns>
protected virtual T MakeRepository<T>(Func<DbContext, object> factory, DbContext dbContext)
{
var f = factory ?? _repositoryFactories.GetRepositoryFactory<T>();
if (f == null)
{
throw new NotImplementedException("No factory for repository type, " + typeof(T).FullName);
}
var repo = (T)f(dbContext);
Repositories[typeof(T)] = repo;
return repo;
}
/// <summary>
/// Set the repository for type T that this provider should return.
/// </summary>
/// <remarks>
/// Plug in a custom repository if you don't want this provider to create one.
/// Useful in testing and when developing without a backend
/// implementation of the object returned by a repository of type T.
/// </remarks>
public void SetRepository<T>(T repository)
{
Repositories[typeof(T)] = repository;
}
/// <summary>
/// The <see cref="RepositoryFactories"/> with which to create a new repository.
/// </summary>
/// <remarks>
/// Should be initialized by constructor injection
/// </remarks>
private RepositoryFactories _repositoryFactories;
}
這是我可以使用Unity的東西，如果s o有人可以給我一些關於如何在Unity中創建存儲庫的提示，以便他們可以共享。請注意，我有兩種類型的存儲庫。泛型和自定義。現在這些使用GetStandardRepo和GetRepo返回。如果可能的話，我想要映射，以確定哪些回購我得到我的Unity配置文件，以便它清晰可見。
這裏是統一配置我到目前爲止：
container.RegisterType<RepositoryFactories>(new ContainerControlledLifetimeManager());
container.RegisterType<IRepositoryProvider, RepositoryProvider>();
container.RegisterType<IUow, Uow>();
container.RegisterType<Contracts.Services.IContentService, Services.ContentService>();
container.RegisterType<IAnswerService, AnswerService>();