public void TestJoin()
{
using (var db = CreateSqlServerDB())
{
try
{
db.SqlMode = SqlModes.Text;
db.BeginTransaction();
// Insert a new order
Order newOrder = new Order();
newOrder.OrderName = "new order";
int orderID = Convert.ToInt32(db.Insert<Order>().Entity(newOrder).GetIdentity().Execute());
Assert.IsTrue(orderID > 0);
// Update order name to use the generated ID autoincremented value
newOrder.OrderName = string.Concat(newOrder.OrderName, " ", newOrder.ID);
db.Update<Order>(newOrder, o => o.ID == newOrder.ID);
// Add an order item associated to the newly added order
OrderItem orderItem = new OrderItem { OrderID = newOrder.ID, ItemDescription = "Test item", Price = 5.5m };
int orderItemID = Convert.ToInt32(db.Insert<OrderItem>().Entity(orderItem).GetIdentity().Execute());
Assert.IsTrue(orderItemID > 0);
// Add a receipt associated to the new ordeer / order item
Receipt receipt = new Receipt { OrderItemID = orderItem.ID, AmountPaid = 5.5m };
db.Insert<Receipt>(receipt);
// Query the newly added order with its order item (do not query receipt)
var orderWithItem = db.Query<Order>()
.Join<Order, OrderItem>(JoinType.Left, o => o.OrderItems, (o, oi) => o.ID == oi.OrderID)
.Where(o => o.ID == newOrder.ID)
.FirstOrDefault();
// Query the newly added order with associated order item and receipt
var orderWithItemAndReceipt = db.Query<Order>()
.Join<Order, OrderItem>(JoinType.Left, o => o.OrderItems, (o, oi) => o.ID == oi.OrderID)
.Join<OrderItem, Receipt>(JoinType.Left, oi => oi.ItemReceipt, (oi, r) => oi.ID == r.OrderItemID)
.Where(o => o.ID == newOrder.ID).FirstOrDefault();
Assert.IsNotNull(orderWithItem);
Assert.IsTrue(orderWithItem.OrderItems.Count == 1);
Assert.IsNull(orderWithItem.OrderItems[0].ItemReceipt);
Assert.IsNotNull(orderWithItemAndReceipt.OrderItems[0].ItemReceipt);
// Delete all added items
db.Delete<Order>(o => o.ID == orderID);
db.Delete<OrderItem>(oi => oi.ID == orderItemID);
db.Delete<Receipt>(r => r.OrderItemID == orderItemID);
// Verify items are deleted
var receipts = db.Query<Receipt>().Where(r => r.OrderItemID == orderItemID).ToList();
Assert.IsTrue(receipts.Count == 0);
var orderItems = db.Query<OrderItem>().Where(oi => oi.ID == orderItemID).ToList();
Assert.IsTrue(orderItems.Count == 0);
var orders = db.Query<Order>().Where(o => o.ID == orderID).ToList();
Assert.IsTrue(orders.Count == 0);
}
catch
{
throw;
}
finally
{
db.RollBack();
}
}
}
public void Test_Filtering_ChildrenToload_With_Graph()
{
using (var db = CreateSqlServerDB())
{
try
{
db.SqlMode = SqlModes.Text;
db.BeginTransaction();
// Insert 10 orders
for (int i = 1; i < 11; i++)
{
Order order = new Order { OrderName = "Order" + (i.ToString().PadLeft(2, '0')) };
db.Insert<Order>()
.Entity(order)
.GetIdentity()
.Execute();
OrderItem orderItem1 = new OrderItem { OrderID = order.ID, ItemDescription = "Desc1", Price = 5.5m };
OrderItem orderItem2 = new OrderItem { OrderID = order.ID, ItemDescription = "Desc2", Price = 6.6m };
db.Insert<OrderItem>(orderItem1);
db.Insert<OrderItem>(orderItem2);
Receipt receipt1 = new Receipt { OrderItemID = orderItem1.ID, AmountPaid = orderItem1.Price };
Receipt receipt2 = new Receipt { OrderItemID = orderItem2.ID, AmountPaid = orderItem2.Price };
db.Insert<Receipt>(receipt1);
db.Insert<Receipt>(receipt2);
}
// Try to get entire graph, including orderitems and receipts
var orders = db.Query<Order>().FromView("V_OrdersReceipts").Graph(o => o.OrderItems, o => o.OrderItems.First().ItemReceipt).ToList();
Assert.IsTrue(orders.Count > 0);
Assert.IsNotNull(orders[0].OrderItems);
Assert.IsNotNull(orders[0].OrderItems[0].ItemReceipt);
// Try to get filtered graph without receipt
var orders2 = db.Query<Order>().FromView("V_OrdersReceipts").Graph(o => o.OrderItems).ToList();
Assert.IsTrue(orders2.Count > 0);
Assert.IsNotNull(orders2[0].OrderItems);
Assert.IsNull(orders2[0].OrderItems[0].ItemReceipt);
}
catch
{
throw;
}
finally
{
db.RollBack();
}
}
}