在 Fluent NHibernate 中映射一对一子类

Question

我有以下数据库结构：

事件表
ID - 引导 (PK)
名称 - NVarChar
描述 - NVarChar

特殊事件表
ID - 引导 (PK)
开始日期 - 日期时间
EndDate - DateTime

我有一个抽象 Event 类，以及一个从它继承的 SpecialEvent 类。最终我将拥有一个 RecurringEvent 类，它也将从 Event 类继承。如果可能的话，我想映射 SpecialEvent 类，同时保留与 Id 映射的一对一关系。有人能指出我正确的方向吗？谢谢！

Answer 1

我想通了我的问题。这是我的代码：

public abstract class Event : Entity
{
    protected Event() { }
    public Event(string name, DateTime startDate)
    {
        this.Name = name;
        this.StartDate = startDate;
    }

    public virtual string Name { get; private set; }
    public virtual string Description { get; set; }
    public virtual DateTime StartDate { get; protected set; }
    public virtual DateTime? EndDate { get; set; }
}

public class SpecialEvent : Event
{
    protected SpecialEvent() { }
    public SpecialEvent(DateTime startDate, string name) : base(name, startDate) { }
}

public class RecurringEvent : Event
{
    protected RecurringEvent() { }
    public RecurringEvent(string name, DateTime startDate, DateTime baseDate, int recurrenceIntervalDays)
        : base(name, startDate)
    {
        this.RecurrenceIntervalDays = recurrenceIntervalDays;
        this.BaseDate = baseDate;
    }

    public virtual int RecurrenceIntervalDays { get; protected set; }
    public virtual DateTime BaseDate { get; protected set; }
}

public class EventMap : EntityMap<Event>
{
    public EventMap()
    {
        Map(x => x.Name);
        Map(x => x.Description);
        Map(x => x.StartDate);
        Map(x => x.EndDate);
    }
}

public class SpecialEventMap : SubclassMap<SpecialEvent>
{
    public SpecialEventMap()
    {
        KeyColumn("Id");
    }
}

public class RecurringEventMap : SubclassMap<RecurringEvent>
{
    public RecurringEventMap()
    {
        KeyColumn("Id");

        Map(x => x.BaseDate);
        Map(x => x.RecurrenceIntervalDays);
    }
}