在Repository模式

Question

共享服務我想知道如何處理的情況時，裏面一個服務可以說ICompanyService我需要從IUserAccountService調用另一個方法。 ？

所以一般可以說，一個公司不應該存在沒有用戶帳戶。

的IUserAccount實現服務類看起來是這樣的：

public class UserAccountService : CrudService<UserAccount>, IUserAccountService 
{ 
    private readonly IRepository<UserAccount> _userAccountRepository; 
    private readonly IUnitOfWorkFactory _unitOfWorkFactory; 

    public CompanyService(IRepository<UserAccount> userAccountRepository, 
          IUnitOfWorkFactory unitOfWorkFactory) 
     : base(userAccountRepository, unitOfWorkFactory) 
    { 
     _userAccRepository = userAccRepository; 
    } 

    public int RegisterUser(UserAccount user) { 

     using (var uow=_unitOfWorkFactory.Create()) 
     { 
      // Details omitted for brievity 
      var userId = _userAccountRepository.Create(user); 
      uow.Commit(); 
      return userId; 
     } 
    } 

    //Other service methods 

} 

公司ICompanyService實現：

public class CompanyService : CrudService<Company>, ICompanyService 
{ 
    private readonly IRepository<Company> _companyRepository; 
    private readonly IUnitOfWorkFactory _unitOfWorkFactory; 

    public CompanyService(IRepository<Company> companyRepository, 
          IUnitOfWorkFactory unitOfWorkFactory) 
     : base(companyRepository, unitOfWorkFactory) 
    { 
     _companyRepository= companyRepository; 
    } 

    public int CreateCompanyWithUserAccount(Company company) { 

     using (var uow=_unitOfWorkFactory.Create()) 
     { 
      // Some validation with the company.Details omitted for brievity 
      // Here I need an instance of IUserAccountService 
      // Suppose I get it through DI or IoC 
      var userAccountService = IoC.Resolve<IUserAccountService>(); 
    ### // Is such approach good or bad?! ### 
      var userId = userAccountService.RegisterUser(company.UserAccount); 
      // Map the user id to the company 
      company.UserAccount.Id = userId; 
      var companyId = _companyRepository.Create(company); 
      uow.Commit(); 
      return companyId; 
     } 
    } 

    //Other service methods 

} 

ORM庫下：NHibernate的

Answer 1

你可以只採取依賴IRepository<UserAccount>：

public class CompanyService : CrudService<Company>, ICompanyService 
{ 
    private readonly IRepository<Company> _companyRepository; 
    private readonly IRepository<UserAccount> _userAccountRepository; 
    private readonly IUnitOfWorkFactory _unitOfWorkFactory; 

    public CompanyService(IRepository<Company> companyRepository, 
          IUnitOfWorkFactory unitOfWorkFactory 
          IRepository<UserAccount> userAccountRepository) 
     : base(companyRepository, unitOfWorkFactory) 
    { 
     _companyRepository= companyRepository; 
     _userAccountRepository = userAccountRepository; 
    } 

    public int CreateCompanyWithUserAccount(Company company) { 

     using (var uow=_unitOfWorkFactory.Create()) 
     { 
      // Some validation with the company.Details omitted for brievity 
      var userId = _userAccountRepository.Create(company.UserAccount); 
      // Map the user id to the company 
      company.UserAccount.Id = userId; 
      var companyId = _companyRepository.Create(company); 
      uow.Commit(); 
      return companyId; 
     } 
    } 

    //Other service methods 

} 

IMO，最好是對存儲庫進行依賴。畢竟你的公司服務正在創建一個公司，它需要在數據庫中做一些工作，這就是倉庫的用途。從代碼中我可以看到，不需要涉及UserAccountService。

Answer 2

1. 看來你已經在UserAccountService實現錯構造：public CompanyService

2. 在CompanyService實現，你最好解決權在構造IUserAccountService依賴，所以你的，不是你打電話每次都做一次，每次創建對象方法。

3. 這些依賴關係沒有問題。如果IUnitOfWorkFactory實現的兩個對象出現問題 - >單身生成