[英]Fluent NHibernate and HasMany mapping
使用流利的nhibernate和HasMany有以下问题。 我已经通过Google和SO搜索类似的问题,但是我发现的任何解决方案都不能解决我的问题。
我映射了以下实体(为清楚起见,我省略了大多数属性):
PaymentSchedule.cs
public class PaymentSchedule
{
public virtual BinaryId Id { get; set; }
public virtual IList<PaymentToSchedule> Payments { get; set; }
}
PaymentToSchedule.cs
public class PaymentToSchedule
{
public virtual BinaryId Id { get; set; }
public virtual PaymentSchedule PaymentSchedule { get; set; }
}
映射文件
PaymentScheduleMap.cs
public class PaymentScheduleMap : ClassMap<PaymentSchedule>
{
public PaymentScheduleMap()
{
Table("A_Payment_Schedule");
Id(x => x.Id, "A_Payment_Schedule_Id").CrmId();
HasMany<PaymentToSchedule>(x => x.Payments).Table("A_Payment_To_Schedule").KeyColumns.Add("A_Payment_Schedule_Id").Fetch.Select();
}
}
PaymentToScheduleMap.cs
public class PaymentToScheduleMap : ClassMap<PaymentToSchedule>
{
public PaymentToScheduleMap()
{
Table("A_Payment_To_Schedule");
Id(x => x.Id, "A_Payment_To_Schedule_Id").CrmId();
References(x => x.PaymentSchedule, "A_Payment_Schedule_Id");
}
}
基本上,我想在加载PaymentSchedule对象时获取PaymentToSchedule实体的列表。 现在,要做到这一点,我必须使用以下查询:
var paymentSchedules = dataAccess.Session.QueryOver<PaymentSchedule>().List();
以及每个付款时间表
var paymentToSchedule = (from pts in dataAccess.Session.Query<PaymentToSchedule>()
where pts.PaymentSchedule.Id == ps.Id).
ToList<PaymentToSchedule>();
这可以正常工作,但是在查询PaymentSchedule时有没有办法获取PaymentToSchedule实体列表?
var paymentSchedules = dataAccess.Session.QueryOver<PaymentSchedule>()
.Fetch(x => x.Payments).Eager;
.List();
// payments are already initialised, you can safly do
var allPayments = paymentSchedules.SelectMany(ps => ps.Payments).ToList();
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