我不熟悉NHibernate投影。我正在嘗試使用它,因此我可以返回列表<>而不是IList <>。到目前爲止,我還沒有多少投入DTO的運氣。我有以下查詢和域對象。所以開始我只是想給出一個EmployeeID的訂單列表。我正在遍歷結果列表並將其添加到List,因爲我希望能夠序列化此列表。任何人都可以告訴我與投影有多遠?我搜索並找到了一些與我自己不相似的例子。基本上..我只想創建一個DTO列表。NHibernate投影到DTO
謝謝!
public List<EmployeeOrder> GetEmployessOrdersDTO(int empid)
{
var emporders = new List<EmployeeOrder>();
ICriteria criteriaSelect = NHibernateSessionManager.Instance.GetSession().CreateCriteria(typeof (Orders))
.CreateCriteria("Employees")
.Add(Expression.Eq("EmployeeID", empid));
criteriaSelect.SetProjection(
Projections.ProjectionList()
.Add(Projections.Property("Products"), "OrderedProducts"));
criteriaSelect.SetResultTransformer(NHibernate.Transform.Transformers.AliasToBean(typeof(EmployeeOrder)));
criteriaSelect.List<EmployeeOrder>();
foreach (var order in emporders)
{
emporders.Add(order);
}
return emporders;
}
訂單:
public class Orders
{
public virtual int OrderID { get; private set;}
public virtual string CustomerID { get; set; }
public virtual DateTime OrderDate { get; set; }
public virtual DateTime RequiredDate { get; set; }
public virtual DateTime ShippedDate { get; set; }
public virtual Employees Employee { get; set; }
public virtual IList<Products> Products { get; private set; }
}
員工:
public class Employees
{
public virtual int EmployeeID { get; private set;}
public virtual string LastName { get; set;}
public virtual string FirstName { get; set;}
public virtual string City { get; set; }
public virtual DateTime HireDate { get; set; }
public virtual string Title { get; set; }
public virtual IList<Orders> Orders { get; private set; }
}
EmployeeOrderDTO:
public class EmployeeOrder
{
public virtual string EmployeeName { get; set; }
public virtual string EmployeeTitle { get; set; }
public virtual DateTime RequiredDate { get; set; }
public virtual List<Products> OrderedProducts { get; set; }
}