[英]Fluent Nhibernate, Composite Keys and could not resolve property: error message
我有一個具有三個屬性的簡單對象。 這將鏈接到具有三列的表,其中兩列為主鍵(一個為int,另一個為日期時間)。
每當我嘗試查詢nhibernate時,都會收到以下錯誤消息:
無法解析屬性:invdate of:Models.Invoice
我錯過了一些設置映射的簡單操作,還是我做錯了查詢?
目標代碼:
public class Invoice
{
public Invoice() { }
#region Properties
public virtual int Acct_Link { get; private set; }
public virtual DateTime Added { get; private set; }
public virtual DateTime InvDate { get; private set; }
public static Invoice GetInvoiceByFluent( int accountId, DateTime invoiceDate )
{
Invoice invoice;
using ( ISession session = FluentNHibernateHelper.OpenSession() )
{
invoice = session
.CreateCriteria<Invoice>()
.SetMaxResults(1)
.Add( Expression.Eq( "Acct_Link", accountId ) )
.Add( Expression.Eq( "invdate", invoiceDate ) )
.UniqueResult<Invoice>();
}
return invoice;
}
#region Nhibernate overrides
public override bool Equals( object obj )
{
if ( obj == null )
return false;
Invoice i = obj as Invoice;
return this.GetHashCode() == i.GetHashCode();
}
public override int GetHashCode()
{
return this.Acct_Link.GetHashCode() ^ this.InvDate.GetHashCode();
}
#endregion
}
映射代碼:
public class InvoiceMap: ClassMap<Invoice>
{
public InvoiceMap()
{
Table( "Invoice" );
CompositeId()
.KeyProperty( i => i.Acct_Link, "Acct_Link" )
.KeyProperty( i => i.InvDate, "InvDate" );
Map( i => i.Added );
}
}
如果我在查詢中刪除對invdate的引用,則此方法工作正常。
提前致謝。
該屬性稱為InvDate
而不是invdate
。 嘗試這個:
.Add( Expression.Eq( "InvDate", invoiceDate ) )
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