static void Add_Records()
{
DATA_RECORD[] data = new DATA_RECORD[4];
data[0] = new DATA_RECORD("1000", "92867", "CA", "1", "Bryan Williams", "2999 Regency", "Orange");
data[1] = new DATA_RECORD("1001", "61434", "CT", "1", "Michael Jordan", "13 Main", "Harford");
data[2] = new DATA_RECORD("1002", "73677", "GA", "1", "Joshua Brown", "4356 Cambridge", "Atlanta");
data[3] = new DATA_RECORD("1003", "10034", "MO", "1", "Keyon Dooling", "19771 Park Avenue", "Columbia");
int nRecords = data.Length;
Console.WriteLine("\tAdd records...");
try
{
for (int i = 0; i < nRecords; i++)
{
MyRecord.Clear();
// populate record buffer with data
MyRecord.SetFieldAsString(0, data[i].number);
MyRecord.SetFieldAsString(1, data[i].zipcode);
MyRecord.SetFieldAsString(2, data[i].state);
MyRecord.SetFieldAsString(3, data[i].rating);
MyRecord.SetFieldAsString(4, data[i].name);
MyRecord.SetFieldAsString(5, data[i].address);
MyRecord.SetFieldAsString(6, data[i].city);
// add record
MyRecord.Write();
}
}
catch (CTException E)
{
Handle_Exception(E);
}
}
static void Add_CustomerMaster_Records()
{
CUSTOMER_DATA[] data = new CUSTOMER_DATA[4];
data[0] = new CUSTOMER_DATA("1000", "92867", "CA", "1", "Bryan Williams", "2999 Regency", "Orange");
data[1] = new CUSTOMER_DATA("1001", "61434", "CT", "1", "Michael Jordan", "13 Main", "Harford");
data[2] = new CUSTOMER_DATA("1002", "73677", "GA", "1", "Joshua Brown", "4356 Cambridge", "Atlanta");
data[3] = new CUSTOMER_DATA("1003", "10034", "MO", "1", "Keyon Dooling", "19771 Park Avenue", "Columbia");
int nRecords = data.Length;
Delete_Records(recordCustMast);
Console.WriteLine("\tAdd records in table CustomerMaster...");
try
{
// start a transaction
MySession.Begin();
for (int i = 0; i < nRecords; i++)
{
recordCustMast.Clear();
// populate record buffer with data
recordCustMast.SetFieldAsString(0, data[i].number);
recordCustMast.SetFieldAsString(1, data[i].zipcode);
recordCustMast.SetFieldAsString(2, data[i].state);
recordCustMast.SetFieldAsString(3, data[i].rating);
recordCustMast.SetFieldAsString(4, data[i].name);
recordCustMast.SetFieldAsString(5, data[i].address);
recordCustMast.SetFieldAsString(6, data[i].city);
// add record
recordCustMast.Write();
}
// commit transaction
MySession.Commit();
}
catch (CTException E)
{
Handle_Exception(E);
}
}
static void Add_ItemMaster_Records()
{
ITEM_DATA[] data = new ITEM_DATA[4];
data[0] = new ITEM_DATA(10, (CTMoney)1995, "1", "Hammer");
data[1] = new ITEM_DATA(3, (CTMoney)999, "2", "Wrench");
data[2] = new ITEM_DATA(4, (CTMoney)1659, "3", "Saw");
data[3] = new ITEM_DATA(1, (CTMoney)398, "4", "Pliers");
int nRecords = data.Length;
Delete_Records(recordItemMast);
Console.WriteLine("\tAdd records in table ItemMaster...");
try
{
// start a transaction
MySession.Begin();
for (int i = 0; i < nRecords; i++)
{
recordItemMast.Clear();
// populate record buffer with data
recordItemMast.SetFieldValue(0, data[i].weight);
recordItemMast.SetFieldValue(1, data[i].price);
recordItemMast.SetFieldAsString(2, data[i].itemnum);
recordItemMast.SetFieldAsString(3, data[i].description);
// add record
recordItemMast.Write();
}
// commit transaction
MySession.Commit();
}
catch (CTException E)
{
Handle_Exception(E);
}
}
static void Add_CustomerOrders_Records()
{
ORDER_DATA[] data = new ORDER_DATA[2];
data[0] = new ORDER_DATA("09/01/2002", "09/05/2002", "1", "1001");
data[1] = new ORDER_DATA("09/02/2002", "09/06/2002", "2", "1002");
int nRecords = data.Length;
CTDate orderdate = new CTDate();
CTDate promisedate = new CTDate();
Delete_Records(recordCustOrdr);
Console.WriteLine("\tAdd records in table CustomerOrders...");
try
{
for (int i = 0; i < nRecords; i++)
{
recordCustOrdr.Clear();
orderdate.StringToDate(data[i].orderdate, DATE_TYPE.MDCY_DATE);
promisedate.StringToDate(data[i].promisedate, DATE_TYPE.MDCY_DATE);
// populate record buffer with data
recordCustOrdr.SetFieldValue(0, orderdate);
recordCustOrdr.SetFieldValue(1, promisedate);
recordCustOrdr.SetFieldAsString(2, data[i].ordernum);
recordCustOrdr.SetFieldAsString(3, data[i].customernum);
// add record
recordCustOrdr.Write();
}
}
catch (CTException E)
{
Handle_Exception(E);
}
}
static void Add_Transactions()
{
ORDER_DATA[] orders = new ORDER_DATA[3];
orders[0] = new ORDER_DATA("09/01/2002", "09/05/2002", "1", "1001");
orders[1] = new ORDER_DATA("09/02/2002", "09/06/2002", "2", "9999"); // bad customer number
orders[2] = new ORDER_DATA("09/22/2002", "09/26/2002", "3", "1003");
int nOrders = orders.Length;
ORDERITEM_DATA[] items = new ORDERITEM_DATA[6];
items[0] = new ORDERITEM_DATA("1", 1, 2, "1");
items[1] = new ORDERITEM_DATA("1", 2, 1, "2");
items[2] = new ORDERITEM_DATA("2", 1, 1, "3");
items[3] = new ORDERITEM_DATA("2", 2, 3, "4");
items[4] = new ORDERITEM_DATA("3", 1, 2, "3");
items[5] = new ORDERITEM_DATA("3", 2, 2, "99"); // bad item number
int nItems = items.Length;
CTDate orderdate = new CTDate();
CTDate promdate = new CTDate();
int savepoint;
int j = 0;
Delete_Records(recordCustOrdr);
Delete_Records(recordOrdrItem);
Console.WriteLine("\tAdd transaction records...");
// process orders
for (int i = 0; i < nOrders; i++)
{
// start a transaction
MySession.Begin();
try
{
recordCustOrdr.Clear();
// populate record buffer with order data
orderdate.StringToDate(orders[i].orderdate, DATE_TYPE.MDCY_DATE);
promdate.StringToDate(orders[i].promdate, DATE_TYPE.MDCY_DATE);
recordCustOrdr.SetFieldValue(0, orderdate);
recordCustOrdr.SetFieldValue(1, promdate);
recordCustOrdr.SetFieldAsString(2, orders[i].ordernum);
recordCustOrdr.SetFieldAsString(3, orders[i].custnum);
// add order record
recordCustOrdr.Write();
}
catch (CTException E)
{
// abort transaction on error
Handle_Exception(E);
}
// set transaction savepoint
savepoint = recordCustOrdr.SetSavePoint();
// process order items
while (items[j].ordernum == orders[i].ordernum)
{
try
{
recordOrdrItem.Clear();
// populate record buffer with order item data
recordOrdrItem.SetFieldValue(0, items[j].seqnumber);
recordOrdrItem.SetFieldValue(1, items[j].quantity);
recordOrdrItem.SetFieldAsString(2, items[j].ordernum);
recordOrdrItem.SetFieldAsString(3, items[j].itemnum);
// add order item record
recordOrdrItem.Write();
// check that item exists in ItemMaster table
recordItemMast.Clear();
recordItemMast.SetFieldAsString(2, items[j].itemnum);
if (!recordItemMast.Find(FIND_MODE.EQ))
{
// if not found, restore back to previous savepoint
recordItemMast.RestoreSavePoint(savepoint);
}
else
{
// set transaction savepoint
savepoint = recordItemMast.SetSavePoint();
}
}
catch (CTException E)
{
// abort transaction on error
Handle_Exception(E);
}
// bump to next item
j++;
// exit the while loop on last item
if (j >= nItems)
{
break;
}
}
// check that customer exists in CustomerMaster table
recordCustMast.Clear();
recordCustMast.SetFieldAsString(0, orders[i].custnum);
// commit or abort the transaction
if (!recordCustMast.Find(FIND_MODE.EQ))
{
MySession.Abort();
}
else
{
MySession.Commit();
}
}
}
//
// Manage()
//
// Populates table and perform a simple query
//
static void Manage()
{
int quantity;
double price, total;
string itemnumb, custnumb, ordrnumb, custname;
bool isOrderFound, isItemFound;
Console.WriteLine("MANAGE");
// populate the tables with data
Add_CustomerMaster_Records();
Add_CustomerOrders_Records();
Add_OrderItems_Records();
Add_ItemMaster_Records();
// perform a query:
// list customer name and total amount per order
// name total
// @@@@@@@@@@@@@ $xx.xx
// for each order in the CustomerOrders table
// fetch order number
// fetch customer number
// fetch name from CustomerMaster table based on customer number
// for each order item in OrderItems table
// fetch item quantity
// fetch item number
// fetch item price from ItemMaster table based on item number
// next
// next
Console.WriteLine("\n\tQuery Results");
try
{
// get the first order
isOrderFound = recordCustOrdr.First();
while (isOrderFound) // for each order in the CustomerOrders table
{
// fetch order number
ordrnumb = recordCustOrdr.GetFieldAsString(2);
// fetch customer number
custnumb = recordCustOrdr.GetFieldAsString(3);
// fetch name from CustomerMaster table based on customer number
recordCustMast.Clear();
recordCustMast.SetFieldAsString(0, custnumb);
if (!recordCustMast.Find(FIND_MODE.EQ))
{
continue; // not possible in our canned example
}
custname = recordCustMast.GetFieldAsString(4);
// fetch item price from OrderItems table
recordOrdrItem.Clear();
recordOrdrItem.SetFieldAsString(2, ordrnumb);
// define a recordset to scan only items applicable to this order
recordOrdrItem.RecordSetOn(6);
isItemFound = recordOrdrItem.First();
total = 0;
while (isItemFound) // for each order item in OrderItems table
{
// fetch item quantity
recordOrdrItem.GetFieldValue(1, out quantity);
// fetch item number
itemnumb = recordOrdrItem.GetFieldAsString(3);
// fetch item price from ItemMaster table based on item number
recordItemMast.Clear();
recordItemMast.SetFieldAsString(2, itemnumb);
recordItemMast.Find(FIND_MODE.EQ);
recordItemMast.GetFieldValue(1, out price);
// calculate order total
total += (price * quantity);
isItemFound = recordOrdrItem.Next();
}
recordOrdrItem.RecordSetOff();
// output data to stdout
Console.WriteLine("\t\t{0,-20}{1,-8}", custname, total);
// read next order
if (!recordCustOrdr.Next())
{
isOrderFound = false;
}
}
}
catch (CTException E)
{
Handle_Exception(E);
}
}