i have following problem:
there is my interface:
public interface IObjectWithID
{
ObjectId Id { get; set; }
}
my object:
public class Order : IObjectWithID
{
[BsonId]
public ObjectId Id
{
get;
set;
}
private Customer customer;
public Customer Customer
{
get { return customer; }
set { customer = value; }
}
public Employees employee;
private Employees Employee
{
get { return employee; }
set { employee = value; }
}
public IList<Product> Products = new List<Product>();
public Order(Customer customer, Employees employee, params Product[] product)
{
this.customer = customer;
this.employee = employee;
TabelaPosredniaKlientOrder.Tabela.Add(new ObiektPosredniKlientOrder(this.Id, Customer.Id));
TabelaPosredniaPracownikOrder.Tabela.Add(new ObiektPosredniPracownikOrder(this.Id, Employee.Id));
}
}
there is problematic function
public static IObjectWithID FindById<T>(MongoCursor cursor, ObjectId id) where T: IObjectWithID
{
var query = Query<IObjectWithID>.Where(e => e.Id == id);
var item = cursor.Collection.FindOneAs<IObjectWithID>(query);
return item;
}
then is following code at startup up:
//database initialization code
// collection initialization code
var neworder = new order(param1, param2, param3);
collection.Inser(neworder); //everything fine
var item = FindByID<Order>(cursor, neworder.Id); //cursor is initializated
then it says "Additional information: Unable to determine the serialization information for the expression: e.Id." in function FindById in line
var query = Query<IObjectWithID>.Where(e => e.Id == id);
but when i switch this into:
var query = Query<Order>.Where(e => e.Id == id);
var item = cursor.Collection.FindOneAs<Order>(query);
it works fine.
The problem is dont want to have multiply if statement in this function, i want to use nice, clean interface.
Thx in advance!