Dapper .net，批量插入，同时插入主表和明细表时如何强制引用完整性

Question

我正在使用 Dapper plus 批量插入 SQL 表。我在维护主表和详细表之间的引用完整性方面面临挑战。 这是代码。

  var userName = Environment.UserName;

        DapperPlusManager.Entity<HardwareComponentType>("WithInsertIfNotExists").Table("dbo.HardwareComponents")
                                     .UseBulkOptions(options => {
                                         options.InsertIfNotExists = true;
                                     }).Identity(x=>x.ComponentId).Map("Name", "Name").Map("Status", "Status").MapValue(DateTime.Now, "ModifiedDateTime").MapValue(userName, "ModifiedByUser");

  DapperPlusManager.Entity<HardwareComponent>()
       .Table("dbo.HardwareComponentDetails").Identity(x=>x.ComponentDetailsId).Map("NodeID", "NodeID").Map("Name","Name").Map("Level", "Level").Map("Status", "Status").Map("DateSinceOperational", "DateSinceOperational").Map("IsWorkAssigned", "IsWorkAssigned");

  var hardwareComponents = hardwareComponentTypes.SelectMany(x => x.Components.Where(y => y.NodeID != null)).ToList();

  //bulk insert here  

  dbConnection.BulkInsert(hardwareComponentTypes).ThenBulkInsert(hardwareComponent=> hardwareComponent.Components );

这是我的类结构（主对象）：

  public class HardwareComponentType
  {
    /// <summary>
    /// ComponentId.
    /// </summary>
    [Key]
    public int ComponentId { get; set; }

    /// <summary>
    /// Name.
    /// </summary>
    public string Name { get; set; }

    /// <summary>
    /// Status.
    /// </summary>
    public string Status { get;set;}

    public int Order { get; set; }
    
    /// <summary>
    /// Components List.
    /// </summary>
    public List<HardwareComponent> Components { get; set; }
}

详细对象

 public class HardwareComponent
 {

    /// <summary>
    /// Component DetailsId.
    /// </summary>
    [Key]
    public int ComponentDetailsId { get; set; }

    /// <summary>
    /// ComponentId.
    /// </summary>
    public int ComponentId { get; set; }

    /// <summary>
    /// NodeId.
    /// </summary>
    public string NodeID { get; set; }
    
    /// <summary>
    /// Level.
    /// </summary>
    public int? Level { get; set; }
    
    /// <summary>
    /// Name.
    /// </summary>
    public string Name { get; set; }
    
    /// <summary>
    /// Status.
    /// </summary>
    public string Status { get; set; }
    
    /// <summary>
    /// Date Since Operational.
    /// </summary>
    public DateTime? DateSinceOperational { get; set; }
    
    /// <summary>
    /// Is Work Assigned.
    /// </summary>
    public bool? IsWorkAssigned { get; set; }
}

如您所见，主表主键（ComponentId）是明细表中的外键。 我希望当记录插入到详细表中时，它应该从组件表中获取相应的ComponentId。

那么，我应该做两个单独的插入语句还是当前语句就足够了？否则我如何实现引用完整性：

dbConnection.BulkInsert(hardwareComponentTypes).ThenBulkInsert(hardwareComponent=> hardwareComponent.Components );

Answer 1

我希望当记录插入明细表时，它应该从组件表中获取相应的ComponentId。

您可以在映射中使用以下解决方案之一：

• 行动后
• 然后对于每个

如：

DapperPlusManager.Entity<HardwareComponentType>("WithInsertIfNotExists").Table("dbo.HardwareComponents")
     .UseBulkOptions(options => {
         options.InsertIfNotExists = true;
     }).Identity(x=>x.ComponentId).Map("Name", "Name").Map("Status", "Status").MapValue(DateTime.Now, "ModifiedDateTime").MapValue(userName, "ModifiedByUser")
     .AfterAction((actionKind, master) =>
     {
         if (actionKind == DapperPlusActionKind.Insert || actionKind == DapperPlusActionKind.Merge)
         {              
             if (master.Components != null)
             {
                 master.Components.ForEach(x => x.ComponentId = master.ComponentId);
             }
         }
     });