Question

如果我希望能够在对象之间建立1对多的关系，那么它如何在Subsonic的SimpleReporitory中运行？

我是否必须创建一个桥对象，然后在运行时构建我的父对象，或者内置这种支持？

我正在寻找的是：

Adam的示例商店......

Public Class Shop

    Private m_id As Integer
    Private m_Name As String
    Private m_Employees As List(Of Employee)

    Public Property Id() As Integer
        Get
            Return m_id
        End Get
        Set(ByVal value As Integer)
            m_id = value
        End Set
    End Property

    Public Property Name() As String
        Get
            Return m_Name
        End Get
        Set(ByVal value As String)
            m_Name = value
        End Set
    End Property

    Public Property Employees() As List(Of Employee)
        Get
            Return m_Employees
        End Get
        Set(ByVal value As List(Of Employee))
            m_Employees = value
        End Set
    End Property

End Class

Public Class Employee

    Private m_id As Integer
    Private m_Name As String

    Public Property Id() As Integer
        Get
            Return m_id
        End Get
        Set(ByVal value As Integer)
            m_id = value
        End Set
    End Property

    Public Property Name() As String
        Get
            Return m_Name
        End Get
        Set(ByVal value As String)
            m_Name = value
        End Set
    End Property

End Class

主要位：

        Dim repo As New SimpleRepository("SubSonicObjectTest", SimpleRepositoryOptions.RunMigrations)

        Dim emplyee1 As New Employee
        emplyee1.Name = "Martin"
        Dim emplyee2 As New Employee
        emplyee2.Name = "Adam"

        Dim shop As New Shop
        shop.Name = "Sub Sonic Store"

        shop.Employees = New List(Of Employee)
        shop.Employees.Add(emplyee1)
        shop.Employees.Add(emplyee2)

        repo.Add(Of Shop)(shop)

我认为这应该创建3个表：

商店
员工
ShopsToEmployees（或其他一些命名惯例）

但我只收到频道表！

Answer 1

要创建一对多关系，您只需要创建对象模型，SubSonic应该为您完成其余的工作。

public class Shop
{
  public int Id { get; set; }
  public String Name { get; set; }
  public List<Employee> Employees { get; set; }
}

public class Employee
{
  public int Id { get; set; }
  public String Name { get; set; }
}

编辑：当您运行迁移而不是3时，这应生成两个表。您在问题中描述的3个表将代表多对多关系。同样在您的示例中，您没有保存您的员工，SubSonic不会级联保存，因此您需要保存您的Shop然后将Employees添加到它并BatchSave Employees。

Answer 2

我正在更新当前的SimpleRepo内容，以根据集合自动创建连接表。不容易确定很多/很多对1 /多 - 但我有一些想法：）。

SimpleRepository中的Parent和Child对象

2 个答案: