public static CustomerCache GetInstance()
{
if (instance == null)
{
instance = new CustomerCache();
}
return(instance);
}
public void Clear()
{
if (customers != null)
{
customers.Clear();
}
instance = null;
}
public List <Transaction> GetTransactionsByProjectId(int p)
{
List <Transaction> transactions = new List <Transaction>();
DateTime timeVar;
int intVar;
double doubleVar;
Transaction tx = new Transaction();
DBFunctions.GetInstance().OpenConnection();
OleDbCommand command = DBFunctions.GetInstance().GetCommand("Select ID, TransactionTime, Customer, Remarks, TransactionSum, SaleOrPurchase, Project From Transactions " +
"Where Project=?");
command.Parameters.Clear();
command.Parameters.AddWithValue("Project", p);
OleDbDataReader reader = DBFunctions.GetInstance().GetReader(command);
while (reader.Read())
{
tx = new Transaction();
tx.ID = int.Parse(reader[0].ToString());
if (DateTime.TryParse(reader[1].ToString(), out timeVar))
{
tx.TransactionTime = timeVar;
}
if (int.TryParse(reader[2].ToString(), out intVar))
{
tx.Customer = new Customer();
tx.Customer.ID = intVar;
}
tx.Remark = reader[3].ToString();
if (double.TryParse(reader[4].ToString(), out doubleVar))
{
tx.TransactionSum = doubleVar;
}
if (int.TryParse(reader[5].ToString(), out intVar))
{
tx.IsPurchase = (intVar == Properties.Settings.Default.PurchaseVar);
}
if (int.TryParse(reader[6].ToString(), out intVar))
{
tx.ParentProject = new Project();
tx.ParentProject.ID = intVar;
}
tx.Customer = CustomerCache.GetInstance().GetCustomerById(tx.Customer.ID);
tx.ParentProject = ProjectCache.GetInstance().GetProjectById(tx.ParentProject.ID);
transactions.Add(tx);
}
return(transactions);
}
public Transaction GetTransactionById(int transactionID)
{
DateTime timeVar;
int intVar;
double doubleVar;
Transaction tx = new Transaction();
DBFunctions.GetInstance().OpenConnection();
OleDbCommand command = DBFunctions.GetInstance().GetCommand("Select TransactionTime, Customer, Remarks, TransactionSum From Transactions " +
"Where ID=?");
command.Parameters.Clear();
command.Parameters.AddWithValue("ID", transactionID);
OleDbDataReader reader = DBFunctions.GetInstance().GetReader(command);
if (reader.Read())
{
tx.ID = transactionID;
if (DateTime.TryParse(reader[0].ToString(), out timeVar))
{
tx.TransactionTime = timeVar;
}
if (int.TryParse(reader[1].ToString(), out intVar))
{
tx.Customer = new Customer();
tx.Customer.ID = intVar;
}
tx.Remark = reader[2].ToString();
if (double.TryParse(reader[3].ToString(), out doubleVar))
{
tx.TransactionSum = doubleVar;
}
tx.Customer = CustomerCache.GetInstance().GetCustomerById(tx.Customer.ID);
return(tx);
}
else
{
return(null);
}
}
