public void InnerAlias()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.MSAccessProvider":
Assert.Ignore("Not supported");
break;
case "EntitySpaces.VistaDBProvider":
case "EntitySpaces.VistaDB4Provider":
OrderQuery oq = new OrderQuery("o");
OrderItemQuery odq = new OrderItemQuery("od");
oq.Select(oq.OrderID, odq.OrderID);
oq.InnerJoin(odq).On(oq.OrderID == odq.OrderID);
oq.OrderBy(oq.OrderID.Ascending);
Assert.IsTrue(collection.Load(oq), "Load");
string lq = collection.Query.es.LastQuery;
Assert.AreEqual(1, collection[0].OrderID.Value, "Property");
Assert.AreEqual(1, Convert.ToInt32(collection[0].GetColumn("OrderID_1")), "Virtual");
break;
default:
oq = new OrderQuery("o");
odq = new OrderItemQuery("od");
oq.Select(oq.OrderID, odq.OrderID);
oq.InnerJoin(odq).On(oq.OrderID == odq.OrderID);
oq.OrderBy(oq.OrderID.Ascending);
Assert.IsTrue(collection.Load(oq), "Load");
lq = collection.Query.es.LastQuery;
Assert.AreEqual(1, collection[0].OrderID.Value, "Property");
Assert.AreEqual(1, Convert.ToInt32(collection[0].GetColumn("OrderID1")), "Virtual");
break;
}
}
public void SingleZeroToMany()
{
// The main Employee query
EmployeeQuery eq1 = new EmployeeQuery("e");
eq1.Where(eq1.EmployeeID < 3);
eq1.OrderBy(eq1.EmployeeID.Ascending);
// The Order Collection
OrderQuery oq1 = eq1.Prefetch<OrderQuery>(Employee.Prefetch_OrderCollectionByEmployeeID);
EmployeeQuery eq2 = oq1.GetQuery<EmployeeQuery>();
oq1.Where(eq2.EmployeeID < 3);
// Pre-test the Order query
OrderCollection oColl = new OrderCollection();
oColl.es.Connection.Name = "ForeignKeyTest";
oColl.Load(oq1);
Assert.AreEqual(3, oColl.Count, "Order pre-test");
// This will Prefetch the Order query
EmployeeCollection coll = new EmployeeCollection();
coll.es.Connection.Name = "ForeignKeyTest";
//coll.es.IsLazyLoadDisabled = true;
coll.Load(eq1);
foreach (Employee emp in coll)
{
emp.es.IsLazyLoadDisabled = true;
switch (emp.EmployeeID.Value)
{
case 1:
Assert.AreEqual(1, emp.EmployeeID.Value);
Assert.AreEqual(1, emp.OrderCollectionByEmployeeID.Count);
break;
case 2:
Assert.AreEqual(2, emp.EmployeeID.Value);
Assert.AreEqual(2, emp.OrderCollectionByEmployeeID.Count);
break;
default:
Assert.Fail("Only employees 1 and 2 should be loaded.");
break;
}
}
}
public void InnerSelectAllPrimaryQuery()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
OrderQuery oq = new OrderQuery("o");
OrderItemQuery oiq = new OrderItemQuery("oi");
oq
.Select(oq)
.InnerJoin(oiq)
.On(oq.OrderID == oiq.OrderID);
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(15, collection.Count);
string lq = collection.Query.es.LastQuery;
string all = lq.Substring(7, 3);
Assert.AreEqual("o.*", all);
}
public void SelectAllPlusSubQuery()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
OrderQuery orders = new OrderQuery("o");
OrderItemQuery details = new OrderItemQuery("oi");
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.SqlServerCeProvider":
case "EntitySpaces.SqlServerCe4Provider":
Assert.Ignore("Not supported.");
break;
default:
orders.Select
(
orders,
details.Select(
details.UnitPrice.Max())
.Where(orders.OrderID == details.OrderID).As("MaxUnitPrice")
);
orders.OrderBy(orders.OrderID.Ascending);
break;
}
Assert.IsTrue(collection.Load(orders));
Assert.AreEqual(8, collection.Count);
Assert.AreEqual(3m, collection[0].GetColumn("MaxUnitPrice"));
string all = collection.Query.es.LastQuery.Substring(7, 3);
Assert.AreEqual("o.*", all);
}
public void AllSubQuery()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.SQLiteProvider":
Assert.Ignore("Not supported by SQLite.");
break;
default:
// DateAdded for Customers whose Manager = 3
CustomerQuery cq = new CustomerQuery("c");
cq.es.All = true;
cq.Select(cq.DateAdded);
cq.Where(cq.Manager == 3);
// OrderID and CustID where the OrderDate is
// less than all of the dates in the CustomerQuery above.
OrderQuery oq = new OrderQuery("o");
oq.Select(
oq.OrderID,
oq.CustID
);
oq.Where(oq.OrderDate < cq);
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(8, collection.Count);
break;
}
}
public void AnyNestedBySubQuery()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.SQLiteProvider":
Assert.Ignore("Not supported by SQLite.");
break;
default:
// Employees whose LastName begins with 'S'.
EmployeeQuery eq = new EmployeeQuery("e");
eq.Select(eq.EmployeeID);
eq.Where(eq.LastName.Like("S%"));
// DateAdded for Customers whose Managers are in the
// EmployeeQuery above.
CustomerQuery cq = new CustomerQuery("c");
cq.es.Any = true;
cq.Select(cq.DateAdded);
cq.Where(cq.Manager.In(eq));
// OrderID and CustID where the OrderDate is
// less than any one of the dates in the CustomerQuery above.
OrderQuery oq = new OrderQuery("o");
oq.Select(
oq.OrderID,
oq.CustID
);
oq.Where(oq.OrderDate < cq);
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(8, collection.Count);
break;
}
}
public void NestedBySubQuery()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
// This is the same as the traditional nested SubQuery
// in the 'Nested' test, but is easier to construct
// and understand.
// The key is to start with the innermost SubQuery,
// and work your way out to the outermost Query.
// Employees whose LastName begins with 'S'.
EmployeeQuery eq = new EmployeeQuery("e");
eq.Select(eq.EmployeeID);
eq.Where(eq.LastName.Like("S%"));
// DateAdded for Customers whose Managers are in the
// EmployeeQuery above.
CustomerQuery cq = new CustomerQuery("c");
cq.Select(cq.DateAdded);
cq.Where(cq.Manager.In(eq));
// OrderID and CustID where the OrderDate is in the
// CustomerQuery above.
OrderQuery oq = new OrderQuery("o");
oq.Select(
oq.OrderID,
oq.CustID
);
oq.Where(oq.OrderDate.In(cq));
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(2, collection.Count);
}
public void Nested()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
OrderQuery oq = new OrderQuery("o");
CustomerQuery cq = new CustomerQuery("c");
EmployeeQuery eq = new EmployeeQuery("e");
// OrderID and CustID for customers who ordered on the same date
// a customer was added, and have a manager whose
// last name starts with 'S'.
oq.Select(
oq.OrderID,
oq.CustID
);
oq.Where(oq.OrderDate
.In(
cq.Select(cq.DateAdded)
.Where(cq.Manager.In(
eq.Select(eq.EmployeeID)
.Where(eq.LastName.Like("S%"))
)
)
)
);
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(2, collection.Count);
}
public void SelectStatement()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
OrderQuery orders = new OrderQuery("o");
OrderItemQuery details = new OrderItemQuery("oi");
// A SubQuery in the Select clause must return a single value.
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.SqlServerCeProvider":
case "EntitySpaces.SqlServerCe4Provider":
Assert.Ignore("Not supported.");
break;
default:
orders.Select
(
orders.OrderID,
orders.OrderDate,
details.Select(
details.UnitPrice.Max())
.Where(orders.OrderID == details.OrderID).As("MaxUnitPrice")
);
orders.OrderBy(orders.OrderID.Ascending);
break;
}
Assert.IsTrue(collection.Load(orders));
Assert.AreEqual(8, collection.Count);
Assert.AreEqual(3m, collection[0].GetColumn("MaxUnitPrice"));
}
public void SimpleJoinOn()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.MSAccessProvider":
Assert.Ignore("SubQuery inside an ON clause not Supported");
break;
default:
// Query for the Join
OrderItemQuery oiq = new OrderItemQuery("oi");
// SubQuery of OrderItems with a discount
OrderItemQuery oisq = new OrderItemQuery("ois");
oisq.es.Distinct = true;
oisq.Select(oisq.Discount);
oisq.Where(oisq.Discount > 0);
// Orders with discounted items
OrderQuery oq = new OrderQuery("o");
oq.Select(oq.OrderID, oiq.Discount);
oq.InnerJoin(oiq).On(oq.OrderID == oiq.OrderID &
oiq.Discount.In(oisq));
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(2, collection.Count);
break;
}
}
public void FromClauseUsingInstance()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.Name = "ForeignKeyTest";
// Select an arbitrary number of rows from
// any starting row.
int startRow = 4;
int numberOfRows = 7;
// OrderItem SubQuery 1
// Get all rows through start + number, ascending
OrderItemQuery oisq = new OrderItemQuery("ois");
oisq.es.Top = startRow + numberOfRows - 1;
oisq.Select(oisq.OrderID, oisq.ProductID, oisq.Quantity);
oisq.OrderBy(oisq.OrderID.Ascending,
oisq.ProductID.Ascending);
// OrderItem SubQuery 2
// Get just the number of rows, descending
OrderItemQuery oisq2 = new OrderItemQuery("ois2");
oisq2.es.Top = numberOfRows;
oisq2.From(oisq).As("sub1");
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
//case "EntitySpaces.SqlServerCeProvider":
// Assert.Ignore("Not supported.");
// break;
case "EntitySpaces.NpgsqlProvider":
case "EntitySpaces.Npgsql2Provider":
oisq2.OrderBy("<sub1.\"OrderID\">", esOrderByDirection.Descending);
oisq2.OrderBy("<sub1.\"ProductID\">", esOrderByDirection.Descending);
break;
case "EntitySpaces.OracleClientProvider":
Assert.Ignore("Not supported.");
break;
default:
oisq2.OrderBy("<sub1.OrderID>", esOrderByDirection.Descending);
oisq2.OrderBy("<sub1.ProductID>", esOrderByDirection.Descending);
break;
}
// Put it back in ascending order
OrderQuery oq = new OrderQuery("o");
oq.From(oisq2).As("sub2");
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.NpgsqlProvider":
case "EntitySpaces.Npgsql2Provider":
oq.OrderBy("<sub2.\"OrderID\">", esOrderByDirection.Ascending);
oq.OrderBy("<sub2.\"ProductID\">", esOrderByDirection.Ascending);
break;
default:
oq.OrderBy("<sub2.OrderID>", esOrderByDirection.Ascending);
oq.OrderBy("<sub2.ProductID>", esOrderByDirection.Ascending);
break;
}
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(7, collection.Count);
Assert.AreEqual(10, collection[0].GetColumn("Quantity"));
}
public void FromClauseWithAlias()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.Name = "ForeignKeyTest";
OrderQuery oq = new OrderQuery("o");
OrderItemQuery oiq = new OrderItemQuery("oi");
// Calculate total price per order
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
//case "EntitySpaces.SqlServerCeProvider":
// Assert.Ignore("Not supported.");
// break;
case "EntitySpaces.NpgsqlProvider":
case "EntitySpaces.Npgsql2Provider":
case "EntitySpaces.OracleClientProvider":
oq.Select(oq.CustID, oq.OrderDate, "<sub.\"OrderTotal\">");
break;
default:
oq.Select(oq.CustID, oq.OrderDate, "<sub.OrderTotal>");
break;
}
oq.From
(
oiq.Select(oiq.OrderID,
(oiq.UnitPrice * oiq.Quantity).Sum().As("OrderTotal"))
.GroupBy(oiq.OrderID)
).As("sub");
oq.InnerJoin(oq).On(oq.OrderID == oiq.OrderID);
oq.OrderBy(oq.OrderID.Ascending);
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(5, collection.Count);
Assert.AreEqual(13.11m, collection[0].GetColumn("OrderTotal"));
}
public void FromClause()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.Name = "ForeignKeyTest";
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
//case "EntitySpaces.SqlServerCeProvider":
// Assert.Ignore("Not supported.");
// break;
default:
OrderQuery oq = new OrderQuery("o");
OrderItemQuery oiq = new OrderItemQuery("oi");
// The inner Select contains an aggregate,
// which requires a GroupBy for each non-aggregate in the Select.
// The outer Select includes the aggregate from the inner Select,
// plus columns where no GroupBy was desired.
oq.Select(oq.CustID, oq.OrderDate, oiq.UnitPrice);
oq.From
(
oiq.Select(oiq.OrderID, oiq.UnitPrice.Sum()).GroupBy(oiq.OrderID)
).As("sub");
oq.InnerJoin(oq).On(oq.OrderID == oiq.OrderID);
oq.OrderBy(oq.OrderID.Ascending);
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(5, collection.Count);
Decimal up = Convert.ToDecimal(collection[0].GetColumn("UnitPrice"));
Assert.AreEqual(5.11m, Math.Round(up, 2));
break;
}
}
public void SingleUnionWithSubSelect()
{
OrderCollection coll = new OrderCollection();
coll.es.Connection.Name = "ForeignKeyTest";
switch (coll.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.SqlServerCeProvider":
case "EntitySpaces.SqlServerCe4Provider":
Assert.Ignore("Scalar SubSelects are not supported in SqlCe.");
break;
default:
OrderQuery oq1 = new OrderQuery("o1");
OrderItemQuery oiq1 = new OrderItemQuery("oi1");
oq1.Select
(
oq1.OrderID,
oq1.OrderDate,
oiq1.Select(
oiq1.UnitPrice.Max())
.Where(oq1.OrderID == oiq1.OrderID).As("MaxUnitPrice")
);
oq1.Where(oq1.OrderDate.Between(Convert.ToDateTime("2005-01-01"), Convert.ToDateTime("2005-12-31")));
OrderQuery oq2 = new OrderQuery("o2");
OrderItemQuery oiq2 = new OrderItemQuery("oi2");
oq2.Select
(
oq2.OrderID,
oq2.OrderDate,
oiq2.Select(
oiq2.UnitPrice.Max())
.Where(oq2.OrderID == oiq2.OrderID).As("MaxUnitPrice")
);
oq2.Where(oq2.OrderDate.Between(Convert.ToDateTime("2004-01-01"), Convert.ToDateTime("2004-12-31")));
oq1.Union(oq2);
oq1.OrderBy(oq1.OrderID.Ascending);
//string lq = cq1.Parse();
Assert.IsTrue(coll.Load(oq1));
Assert.AreEqual(6, coll.Count);
Assert.AreEqual(3m, coll[0].GetColumn("MaxUnitPrice"));
break;
}
}
public void NestedZeroToMany()
{
// The main Employee query
EmployeeQuery eq1 = new EmployeeQuery("e");
eq1.Where(eq1.EmployeeID < 4);
eq1.OrderBy(eq1.EmployeeID.Ascending);
// The Order Collection
OrderQuery oq1 = eq1.Prefetch<OrderQuery>(Employee.Prefetch_OrderCollectionByEmployeeID);
EmployeeQuery eq2 = oq1.GetQuery<EmployeeQuery>();
oq1.Where(eq2.EmployeeID < 4 && oq1.PlacedBy < 3);
// Pre-test the Order query
OrderCollection oColl = new OrderCollection();
oColl.es.Connection.Name = "ForeignKeyTest";
oColl.Load(oq1);
Assert.AreEqual(5, oColl.Count, "Order pre-test");
// The OrderItem Collection
OrderItemQuery oiq1 = eq1.Prefetch<OrderItemQuery>(Employee.Prefetch_OrderCollectionByEmployeeID, Order.Prefetch_OrderItemCollectionByOrderID);
EmployeeQuery eq3 = oiq1.GetQuery<EmployeeQuery>();
OrderQuery oq2 = oiq1.GetQuery<OrderQuery>();
oiq1.Where(eq3.EmployeeID < 4 && oq2.PlacedBy < 3 && oiq1.Quantity < 100);
// Pre-test the OrderItem query
OrderItemCollection oiColl = new OrderItemCollection();
oiColl.es.Connection.Name = "ForeignKeyTest";
oiColl.Load(oiq1);
Assert.AreEqual(4, oiColl.Count, "OrderItem pre-test");
// Will Prefetch the Order and OrderItems queries
EmployeeCollection coll = new EmployeeCollection();
coll.es.Connection.Name = "ForeignKeyTest";
//coll.es.IsLazyLoadDisabled = true;
coll.Load(eq1);
foreach (Employee emp in coll)
{
emp.es.IsLazyLoadDisabled = true;
switch (emp.EmployeeID.Value)
{
case 1:
Assert.AreEqual(1, emp.EmployeeID.Value);
Assert.AreEqual(0, emp.OrderCollectionByEmployeeID.Count);
break;
case 2:
Assert.AreEqual(2, emp.EmployeeID.Value);
Assert.AreEqual(2, emp.OrderCollectionByEmployeeID.Count);
foreach (Order o in emp.OrderCollectionByEmployeeID)
{
Assert.Less(0, o.OrderItemCollectionByOrderID.Count);
}
break;
case 3:
Assert.AreEqual(3, emp.EmployeeID.Value);
Assert.AreEqual(3, emp.OrderCollectionByEmployeeID.Count);
foreach (Order o in emp.OrderCollectionByEmployeeID)
{
Assert.AreEqual(0, o.OrderItemCollectionByOrderID.Count);
}
break;
default:
Assert.Fail("Only employees 1, 2, and 3 should be loaded.");
break;
}
}
}