ServiceStack LoadSelect 未正确 <Into> 引用

Question

我有一个案例，我想使用 ServiceStack.OrmLite LoadSelect 来填充由多个 table 的列组成的 POCO。

基本背景是有服务请求（需要现场技术人员完成）和单独的任务 table。对于应用程序的一部分，我想将 ServiceRequest 和 ServiceRequestAssignment 组合成一个 ServiceRequestExtended class。

这是 POCO：

public class ServiceRequest
{
    [AutoIncrement]
    public int Id { get; set; }

    ... 

}

public class ServiceRequestAssignment
{
    [AutoIncrement]
    public int Id { get; set; }

    [References(typeof(User))]
    public int? UserId { get; set; }

    [Reference]
    public User User { get; set; }

    [References(typeof(ServiceRequest))]
    public int ServiceRequestId { get; set; }

    [Reference]
    public ServiceRequest ServiceRequest { get; set; }

    public double RelativeOrder { get; set; }

    [RowVersion]
    public ulong RowVersion { get; set; }
}

// Basically combines all fields of ServiceRequest & ServiceRequestAssignment
public class ServiceRequestExtended : ServiceRequest
{
    [References(typeof(User))]
    public int? UserId { get; set; }
    [Reference]
    public User User { get; set; }

    public double RelativeOrder { get; set; }
    public ulong RowVersion { get; set; }
}

这是正在使用的（一般）查询：

var exp = Db.From<ServiceRequest>()
          .Join<ServiceRequestAssignment>()
          .Where<ServiceRequest, ServiceRequestAssignment>((q, r) => ...);

var results = Db.LoadSelect<ServiceRequestExtended, ServiceRequest>(exp);

当我执行此操作时，LoadSelect 生成的用于引入关联的 tables / POCO 的查询是不正确的。它在子选择中引用 ServiceRequestExtended 而不是正确的子项 table（在本例中为 ServiceRequestAssignment）。

这是SQL：

SELECT "Id", "UserName", "TechnicianNumber", "FirstName", "LastName", "PIN",     "Active", "Salt"
FROM "Users" WHERE "Id" 
IN (SELECT "ServiceRequestExtended"."UserId" 
    FROM "ServiceRequest" 
    INNER JOIN "ServiceRequestAssignment"
    ON ("ServiceRequest"."Id" = "ServiceRequestAssignment"."ServiceRequestId")
    WHERE ...)

那么 - 我做错了什么？ LoadSelect<Into, From> 中有错误吗？

Answer 1

OrmLite Self References 只能在 real 表上，因为 OrmLite 需要查询现有的引用字段 ID 来填充 POCO 引用。

ServiceStack LoadSelect 未正确 <Into> 引用

ServiceStack LoadSelect not properly <Into> references

sql-server

servicestack

ormlite-servicestack