Repository模式通過添加ADD1實現方法，但應使用基類

的方法，這是在C＃Repository模式通過添加ADD1實現方法，但應使用基類

public class CategoryRepository: RepositoryBase<Category>, ICategoryRepository 
    { 
    public CategoryRepository(IDatabaseFactory databaseFactory) 
     : base(databaseFactory) 
     { 
     }   
    } 
public interface ICategoryRepository : IRepository<Category> 
{ 
}

的原代碼，我不得不改變它在VB.Net，並把它變成我目前的狀況（其他的對象，但主要是相同的），所以它成了這個樣子：

Public Class UserRepository 
    Inherits RepositoryBase(Of Domain.Master.User) 
    'Implements IUserRepository 

    Public Sub New(databaseFactory As IDatabaseFactory) 
     MyBase.New(databaseFactory) 
    End Sub 
End Class 


Public Interface IUserRepository 
    Inherits IRepository(Of User) 

End Interface

的問題是，它仍然有實行IUserRepository，這是不可能的，因爲我將不得不重寫我的代碼，它想要添加已經在RepositoryBase中實現的方法（add，remove，...）

這是我的基類，這裏的問題可能是

Public MustInherit Class RepositoryBase(Of T As Class) 

    Private m_masterContext As MyMasterContext 
    Private ReadOnly dbset As IDbSet(Of T) 

    Protected Sub New(databaseFactory__1 As IDatabaseFactory) 
     DatabaseFactory = databaseFactory__1 
     dbset = DataContext.[Set](Of T)() 
    End Sub 

    Protected Property DatabaseFactory() As IDatabaseFactory 
     Get 
      Return m_DatabaseFactory 
     End Get 
     Private Set(value As IDatabaseFactory) 
      m_DatabaseFactory = value 
     End Set 
    End Property 
    Private m_DatabaseFactory As IDatabaseFactory 

    Protected ReadOnly Property DataContext() As MyMasterContext 
     Get 
      Return If(m_masterContext, (InlineAssignHelper(m_masterContext, DatabaseFactory.[Get]()))) 
     End Get 
    End Property 
    Public Overloads Sub Add(entity As T) 
     dbset.Add(entity) 
    End Sub 
    Public Overridable Sub Update(entity As T) 
     dbset.Attach(entity) 
     m_masterContext.Entry(entity).State = EntityState.Modified 
    End Sub 
    Public Overridable Sub Delete(entity As T) 
     dbset.Remove(entity) 
    End Sub 
    Public Overridable Sub Delete(where As Expression(Of Func(Of T, Boolean))) 
     ' Dim objects As IEnumerable(Of T) = dbset.Where(Of T)(where).AsEnumerable() 
     'For Each obj As T In objects 
     ' dbset.Remove(obj) 
     'Next 
    End Sub 
    Public Overridable Function GetById(id As Long) As T 
     Return dbset.Find(id) 
    End Function 
    Public Overridable Function GetById(id As String) As T 
     Return dbset.Find(id) 
    End Function 
    Public Overridable Function GetAll() As IEnumerable(Of T) 
     Return dbset.ToList() 
    End Function 
    Public Overridable Function GetMany(where As Expression(Of Func(Of T, Boolean))) As IEnumerable(Of T) 
     Return dbset.Where(where).ToList() 
    End Function 
    Public Function [Get](where As Expression(Of Func(Of T, Boolean))) As T 
     Return Nothing ' dbset.Where(where).FirstOrDefault(Of T)() 
    End Function 
    Private Shared Function InlineAssignHelper(Of T)(ByRef target As T, value As T) As T 
     target = value 
     Return value 
    End Function 
End Class

有沒有人有一個想法是什麼我應該改變讓它工作，讓我的UserRepository使用方法RepositoryBase而實施IUserRepository？

在此先感謝

來源

2011-08-29 NicoJuicy

VB.Net沒有直接鑄造，contrairy到C＃

，最好的辦法是重新創建所有的方法和隨時調用mybase.method

例如：

Public Overrides Sub Update(entity As Domain.Slave.Klant) Implements Infrastructure.IRepository(Of Domain.Slave.Klant).Update 
     MyBase.Update(entity) 
    End Sub

所以，這不是在C＃中必需的，但它是在VB.Net :)

來源

2011-08-29 11:56:49 NicoJuicy

Repository模式通過添加ADD1實現方法，但應使用基類

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