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 bool GetActiveProductIds(int employeeId)
{
ProductQuery prd = new ProductQuery("pq");
//prd.es.Connection.Name = "ForeignKeyTest";
OrderItemQuery item = new OrderItemQuery("oiq");
//item.es.Connection.Name = "ForeignKeyTest";
OrderQuery ord = new OrderQuery("oq");
//ord.es.Connection.Name = "ForeignKeyTest";
CustomerQuery cust = new CustomerQuery("cq");
//cust.es.Connection.Name = "ForeignKeyTest";
EmployeeQuery emp = new EmployeeQuery("eq");
//emp.es.Connection.Name = "ForeignKeyTest";
prd.Select(prd.ProductID);
prd.InnerJoin(item).On(prd.ProductID == item.ProductID);
prd.InnerJoin(ord).On(item.OrderID == ord.OrderID);
prd.InnerJoin(cust).On(ord.CustID == cust.CustomerID &
ord.CustSub == cust.CustomerSub);
prd.InnerJoin(emp).On(cust.Manager == emp.EmployeeID);
prd.Where(emp.EmployeeID == employeeId);
prd.Where(prd.Discontinued == false);
prd.es.Distinct = true;
return this.Load(prd);
}
public void LoadJoined()
{
CustomerQuery cq = new CustomerQuery("c");
EmployeeQuery eq = new EmployeeQuery("e");
EmployeeQuery eq2 = new EmployeeQuery("e2");
OrderQuery oq = new OrderQuery("o");
OrderItemQuery oiq = new OrderItemQuery("oi");
ProductQuery pq = new ProductQuery("p");
cq.Select(
cq.CustomerID,
cq.CustomerSub,
cq.CustomerName,
eq,
eq2.LastName.As("ReportsTo"),
oq.PlacedBy,
oq.OrderDate,
oiq,
pq.ProductName,
pq.Discontinued);
cq.LeftJoin(eq).On(eq.EmployeeID == cq.Manager);
cq.LeftJoin(eq2).On(eq.Supervisor == eq2.EmployeeID);
cq.LeftJoin(oq).On(cq.CustomerID == oq.CustID
&& cq.CustomerSub == oq.CustSub);
cq.LeftJoin(oiq).On(oq.OrderID == oiq.OrderID);
cq.LeftJoin(pq).On(oiq.ProductID == pq.ProductID);
CustomerCollection coll = new CustomerCollection();
coll.es.Connection.Name = "ForeignKeyTest";
Assert.IsTrue(coll.Load(cq));
Assert.AreEqual(69, coll.Count);
}
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 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 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 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 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 bool Load(OrderQuery query)
{
this.query = query;
InitQuery(this.query);
return(Query.Load());
}
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 JoinWithArithmeticExpressionOrderByCalulatedColumn()
{
CustomerCollection collection = new CustomerCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
string orderAlias = "";
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.MSAccessProvider":
orderAlias = "<'TotalSales'>";
break;
default:
orderAlias = "TotalSales";
break;
}
// Notice I create a calulated columns based on the TotalSales,
// then Order by it descending
CustomerQuery cust = new CustomerQuery("c");
OrderQuery order = new OrderQuery("o");
OrderItemQuery item = new OrderItemQuery("oi");
cust.Select(cust.CustomerName,
(item.Quantity * item.UnitPrice).Sum().As("TotalSales"));
cust.InnerJoin(order).On(order.CustID == cust.CustomerID);
cust.InnerJoin(item).On(item.OrderID == order.OrderID);
cust.GroupBy(cust.CustomerName);
cust.OrderBy(orderAlias, esOrderByDirection.Descending);
Assert.IsTrue(collection.Load(cust));
Assert.AreEqual(6, collection.Count);
}
public void MixedANDAndORInOn()
{
ProductCollection collection = new ProductCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
int empId = 1;
ProductQuery prd = new ProductQuery("pq");
OrderItemQuery item = new OrderItemQuery("oiq");
OrderQuery ord = new OrderQuery("oq");
CustomerQuery cust = new CustomerQuery("cq");
EmployeeQuery emp = new EmployeeQuery("eq");
prd.Select(prd.ProductID);
prd.InnerJoin(item).On(prd.ProductID == item.ProductID);
prd.InnerJoin(ord).On(item.OrderID == ord.OrderID);
prd.InnerJoin(cust).On(ord.CustID == cust.CustomerID &
(ord.CustSub == cust.CustomerSub |
ord.EmployeeID == cust.StaffAssigned));
prd.InnerJoin(emp).On(cust.Manager == emp.EmployeeID);
prd.Where(emp.EmployeeID == empId);
prd.Where(prd.Discontinued == false);
prd.OrderBy(prd.ProductID.Ascending);
Assert.IsTrue(collection.Load(prd));
Assert.AreEqual(9, collection.Count);
}
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 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 SubQueryWithGT_LT()
{
CustomerCollection coll = new CustomerCollection();
coll.es.Connection.ConnectionString =
UnitTestBase.GetFktString(coll.es.Connection);
switch (coll.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.SqlServerCeProvider":
case "EntitySpaces.SqlServerCe4Provider":
Assert.Ignore("Not supported.");
break;
default:
DateTime fromDate = new DateTime(2005, 1, 1);
DateTime toDate = new DateTime(2005, 8, 31);
DateTime startDate = new DateTime(2000, 1, 1);
DateTime endDate = new DateTime(2000, 12, 31);
CustomerQuery cq = new CustomerQuery("c");
OrderQuery oq = new OrderQuery("o");
OrderQuery oqSub = new OrderQuery("oSub");
oqSub.Select(oqSub.OrderDate.Max());
oqSub.Where(oqSub.CustID == cq.CustomerID &
oqSub.CustSub == cq.CustomerSub);
// These work in SubQuery
oqSub.Where(oqSub.OrderDate >= fromDate);
oqSub.Where(oqSub.OrderDate <= toDate);
// If you comment the above 2 GT/LT lines
// and un-comment the Between line below
// it gets Null Reference exception on Load()
//oqSub.Where(oqSub.OrderDate.Between(fromDate, toDate));
cq.es.Distinct = true;
cq.Select(cq.CustomerID, cq.CustomerSub, cq.DateAdded, oqSub.As("MaxOrderDate"));
cq.InnerJoin(oq).On(cq.CustomerID == oq.CustID &
cq.CustomerSub == oq.CustSub);
// This works in outer query
cq.Where(cq.DateAdded.Between(startDate, endDate));
Assert.IsTrue(coll.Load(cq));
Assert.AreEqual(1, coll.Count);
break;
}
}
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 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;
}
}
