public static void SelectAllById(string id, List<ShoppingCart> idList)
{
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select * from shopping_cart where session_id = '" + id + "'");
while (reader.Read())
{
ShoppingCart tmpCart = new ShoppingCart();
List<Book> tmpBookList = new List<Book>();
tmpCart.sessionId = reader.GetString(0).Trim();
tmpCart.isbn = reader.GetString(1).Trim();
tmpCart.quantity = Convert.ToInt32(reader.GetValue(2));
Book.SelectAllByAttr(tmpCart.isbn, "isbn", tmpBookList);
tmpCart.book = tmpBookList.ElementAt(0);
idList.Add(tmpCart);
}
db.Close();
}
public static int GetSessionCount(string session_id)
{
int count = 0;
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select sum(quantity) from shopping_cart where session_id = '" + session_id + "'");
if (reader.Read())
{
if (reader.GetValue(0) is DBNull)
count = 0;
else
count = Convert.ToInt32(reader.GetValue(0));
}
db.Close();
return count;
}
public static void Insert(string session_id, string book_id)
{
int quantity = 1; //default value if book isn't already in cart
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select quantity from shopping_cart where session_id = '" + session_id + "' AND isbn = '" + book_id + "'");
if (reader.Read()) //book|session already in cart
{
//get count, add one to it
quantity = Convert.ToInt32(reader.GetValue(0)) + 1;
reader = db.Read("update shopping_cart set quantity = " + quantity + " where session_id = '" + session_id + "' AND isbn = '" + book_id + "'");
}
else
reader = db.Read("insert into shopping_cart values ('" + session_id + "','" + book_id + "','" + quantity + "')");
db.Close();
}
public static int ValidateUser(string userName, string password)
{
int empId = -1; //default error value
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select employee_id from employee where user_name = '" + userName + "' AND password = '******'");
if (reader.Read())
empId = Convert.ToInt32(reader.GetValue(0));
db.Close();
return empId;
}
public static void DeleteSession(string session_id)
{
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("delete from shopping_cart where session_id = '" + session_id + "'");
db.Close();
}
//This function populates a list Book objects from the db that have the specified column name/value
//the second set of name/value is optional and defaults to null
public static void SelectAllByWildAttr(List<Book> bookList, string wildcard, string attribute, string wildcard2 = null, string attribute2 = null)
{
Database db = new Database();
OleDbDataReader reader;
db.Open();
if(wildcard2 == null)
reader = db.Read("select * from book_view where " + attribute + " like '%" + wildcard + "%'");
else
reader = db.Read("select * from book_view where " + attribute + " like '%" + wildcard + "%' AND " + attribute2 + " like '%" + wildcard2 + "%'");
while (reader.Read())
{
Book tmpBook = new Book();
tmpBook.isbn = reader.GetString(0).Trim();
tmpBook.title = reader.GetString(1).Trim();
tmpBook.l_name = reader.GetString(2).Trim();
tmpBook.f_name = reader.GetString(3).Trim();
tmpBook.qoh = Convert.ToInt32(reader.GetValue(4));
tmpBook.retailPrice = String.Format("{0:F}", reader.GetValue(5));
tmpBook.category = reader.GetString(6).Trim();
tmpBook.filename = reader.GetString(7).Trim();
tmpBook.description = reader.GetString(8).Trim();
tmpBook.wholesalePrice = String.Format("{0:F}", reader.GetValue(9));
tmpBook.percentProfit = String.Format("{0:F}", reader.GetValue(10));
bookList.Add(tmpBook);
}
db.Close();
}
public static string SelectRegionById(int empId)
{
string tmpString = ""; //default error value
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select region from employee where employee_id = '" + empId + "'");
if (reader.Read())
tmpString = reader.GetString(0).Trim();
db.Close();
return tmpString;
}
public static void SelectAllByAttr(string id, string attribute, List<Customer> custList)
{
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select * from customer where " + attribute + " = '" + id + "'");
if (reader.Read())
{
Customer tmpCustomer = new Customer();
tmpCustomer.id = Convert.ToInt32(reader.GetValue(0));
tmpCustomer.l_name = reader.GetString(1).Trim();
tmpCustomer.f_name = reader.GetString(2).Trim();
tmpCustomer.address = reader.GetString(3).Trim();
tmpCustomer.city = reader.GetString(4).Trim();
tmpCustomer.state = reader.GetString(5).Trim();
tmpCustomer.zip = Convert.ToInt32(reader.GetValue(6));
tmpCustomer.region = reader.GetString(7).Trim();
tmpCustomer.email = reader.GetString(8).Trim();
tmpCustomer.login_name = reader.GetString(9).Trim();
tmpCustomer.login_pass = reader.GetString(10).Trim();
custList.Add(tmpCustomer);
}
db.Close();
}
public void SelectByAttr(string attribute, int id)
{
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select * from customer where " + attribute + " = '" + id + "'");
if (reader.Read())
{
id = Convert.ToInt32(reader.GetValue(0));
l_name = reader.GetString(1).Trim();
f_name = reader.GetString(2).Trim();
address = reader.GetString(3).Trim();
city = reader.GetString(4).Trim();
state = reader.GetString(5).Trim();
zip = Convert.ToInt32(reader.GetValue(6));
region = reader.GetString(7).Trim();
email = reader.GetString(10);
//login_name = reader.GetString(9).Trim();
//login_pass = reader.GetString(10).Trim();
}
db.Close();
}
public string GetCommission(string x_region, decimal x_rate)
{
rate = Convert.ToString(x_rate);
region = x_region;
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select calc_commission('" + region + "'," + rate + ") from dual");
if (reader.Read())
total = String.Format("{0:F}", reader.GetValue(0));
db.Close();
return total;
}
public static int CreateNewUser(string userName, string password, string email, string f_name, string l_name, string address, string city, string state, int zip, string region)
{
int custId = -1; //default error value
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select customer_id from customer where user_name ='" + userName + "'");
if (reader.HasRows) //user_name already taken, return error
{
db.Close();
custId = -2;
return custId;
}
//insert new customer tuple
reader = db.Read("insert into customer values (customer_seq,nextval,'" + l_name + "','" + f_name + "','" + address + "','" + city + "','" + state + "'," + zip + ",'" + region + "','" + userName + "','" + password + "','" + email + "')");
//select it back out to figure out the customer_id, user_names are DISTINCT
reader = db.Read("select customer_id from customer where user_name ='" + userName + "'");
if (reader.Read())
custId = Convert.ToInt32(reader.GetValue(0));
db.Close();
return custId;
}
public void SelectById(string id)
{
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select * from book_view where isbn = " + id);
if (reader.Read())
{
isbn = reader.GetString(0).Trim();
title = reader.GetString(1).Trim();
l_name = reader.GetString(2).Trim();
f_name = reader.GetString(3).Trim();
qoh = Convert.ToInt32(reader.GetValue(4));
retailPrice = String.Format("{0:F}", reader.GetValue(5));
category = reader.GetString(6).Trim();
filename = reader.GetString(7).Trim();
description = reader.GetString(8).Trim();
wholesalePrice = String.Format("{0:F}", reader.GetValue(9));
percentProfit = String.Format("{0:F}", reader.GetValue(10));
}
db.Close();
}
public static bool UpdateQoh(string id, int count)
{
int rows;
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("update book set q_o_h = " + count + " where isbn = '" + id + "'");
rows = reader.RecordsAffected;
db.Close();
if (rows > 0)
return true;
return false;
}
public static void SelectDistinctCategories(List<string> categoryList)
{
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select distinct category from book_view");
while (reader.Read())
categoryList.Add(reader.GetString(0).Trim());
db.Close();
}
//Used by the checkout procedure. Updates the quantity value of the book. If count is zero it deletes
//the book from the shopping cart.
public static void UpdateCount(string session_id, string isbn, int count)
{
Database db = new Database();
OleDbDataReader reader;
db.Open();
if (count == 0)
reader = db.Read("delete from shopping_cart where session_id = '" + session_id + "' AND isbn = '" + isbn + "'");
else
reader = db.Read("update shopping_cart set quantity = '" + count + "' where session_id = '" + session_id + "' AND isbn = '" + isbn + "'");
}
public static void Proc_Checkout(string sid, int cid, string street, string city, string state, int zip)
{
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("BEGIN checkout('" + sid + "'," + cid + ",'" + street + "','" + city + "','" + state + "'," + zip + "); END;");
db.Close();
}
public bool InsertTestimonial(int customer_id, string name, string entry)
{
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("insert into testimonials values (tests_seq.nextval, '" + customer_id + "' , '" + name + "' , '" + entry + "')");
db.Close();
return (true);
}
public static void SelectAllByAttr(string id, string attribute, List<Book> bookList)
{
Database db = new Database();
OleDbDataReader reader;
db.Open();
reader = db.Read("select * from book_view where " + attribute + " = '" + id + "'");
while (reader.Read())
{
Book tmpBook = new Book();
tmpBook.isbn = reader.GetString(0).Trim();
tmpBook.title = reader.GetString(1).Trim();
tmpBook.l_name = reader.GetString(2).Trim();
tmpBook.f_name = reader.GetString(3).Trim();
tmpBook.qoh = Convert.ToInt32(reader.GetValue(4));
tmpBook.retailPrice = String.Format("{0:F}", reader.GetValue(5));
tmpBook.category = reader.GetString(6).Trim();
tmpBook.filename = reader.GetString(7).Trim();
tmpBook.description = reader.GetString(8).Trim();
bookList.Add(tmpBook);
}
db.Close();
}
