Question

我有以下代码用于我的ORMLite演示：

[Alias("ProUser")]
public class DomainUser : IProUser
{
    public int UserType { get; set; }
    public string Id{ get; set; }

    [Reference]
    public Address HomeAddress { get; set; }

    [Reference]
    public List<Order> Orders { get; set; }

    [Ignore]
    public UserType UserTypeEnum
    {
        get { return (UserType)UserType; }
        set { UserType = (int)value; }
    }
}

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

    public string ProUserId { get; set; }

    public string Details { get; set; }

}

现在，您可以注意到DomainUser和Order with List Orders属性之间存在参照关系。
我可以调用Db.SaveReferences（user，user.Orders），看看如果我更改了域内的任何内容，那么它的效果非常好。
但是，如果我在列表中添加新项目，ORMLite不会保存此项。

我的测试下面很好地展示了这个探测器

DomainUser user = repository.Find("Someone.Else") as DomainUser;
user.UserTypeEnum = UserType.Domain;
user.HomeAddress.StreetName = "Some new street";
user.Orders[1].Details = "Nestle Chocolates";
user.Orders.Add(new Order
{
    Details = "Reese",
    ProUserId = user.Id
});

// This one would be OK since the user already has two orders in the DB
Assert.AreEqual(2, user.Orders.Count);  
repository.Update(user);


DomainUser retval =  repository.Find(user.Id) as DomainUser;

// However, this one would fail because no new order has been added.
Assert.AreEqual(3, user.Orders.Count);

令人困惑的是，我看到ORMLite正在尝试添加新记录，因为我看到正在执行插入查询。我不确定DB为什么不反映它......

以下是Repository在Find（）和Update（）方法中的样子：

public IProUser Find(string id)
        {
            DomainUser user = Db.LoadSingleById<DomainUser>(id);
            return user;
        }

 public IProUser Update(DomainUser user)
        {
            using(Db.OpenTransaction(IsolationLevel.ReadCommitted))
            { 
                Db.Save(user);
                Db.SaveReferences(user,user.HomeAddress);
                Db.SaveReferences(user,user.Orders);

                return Find(user.Id);
            }
        }

Answer 1

您需要显式提交ADO.NET事务，即：

using(var trans = Db.OpenTransaction(IsolationLevel.ReadCommitted))
{ 
    Db.Save(user);
    Db.SaveReferences(user,user.HomeAddress);
    Db.SaveReferences(user,user.Orders);

    trans.Commit();

    return Find(user.Id);
}

ORMLIte [ServiceStack]。 SaveReference方法不会在List中添加项目

1 个答案: