/**
* Applies a Delete transaction by carrying out and deleting a specified Account from the Accounts
* vector list
*/
public void applyTo(Vector<Account> accounts, Vector<Ticket> tickets)
throws TransactionException {
// Username field validation
if (this.username.matches("([A-Za-z0-9_]+)") == false)
throw new TransactionException("Invalid username field");
// if(( 0 <= this.username.trim().length() && this.username.trim().length() <=
// Account.username_size)==false)
if (this.username.trim().length() <= 0)
throw new TransactionException("Username field too small");
if (this.username.trim().length() > Account.username_size)
throw new TransactionException("Username field too large");
// Type field validation
if ((0 <= this.type && this.type <= 3) == false) throw new TransactionException();
// Credit field validation
if (this.credit < 0) throw new TransactionException();
if (this.credit > Math.pow(10, Account.dollars_size + Account.cents_size) - 1)
throw new TransactionException();
try {
Account account = new Account(this.username, this.type, this.credit);
if (accounts.contains(account)) accounts.remove(account);
else throw new TransactionException("User not found");
} catch (ArrayIndexOutOfBoundsException e) {
}
}
public Delete(String line) throws DataFormatException {
// current index in the line
int i = 0;
// extract
this.username = line.substring(i, Account.username_size).trim();
// validate
if (!this.username.matches("")) throw new DataFormatException("Invalid username field");
if (this.username.matches("([A-Za-z0-9_]+)") == false)
throw new DataFormatException("Invalid username field");
if (this.username.trim().length() <= 0)
throw new DataFormatException("Username field too small");
if (this.username.trim().length() > Account.username_size)
throw new DataFormatException("Username field too large");
// increment i
i += Account.username_size + Account.token_size;
// extract
String typeString = line.substring(i, i + Account.type_size);
if (typeString.equals("AA")) this.type = Account.Admin;
else if (typeString.equals("BS")) this.type = Account.Buy;
else if (typeString.equals("SS")) this.type = Account.Sell;
else if (typeString.equals("FS")) this.type = Account.Full;
// validate
else throw new DataFormatException("Invalid type field");
// extract dollars
String dollars = line.substring(i, i + Account.dollars_size);
i += Account.dollars_size + 1;
// extract cents
String cents = line.substring(i, i + Account.cents_size);
try {
this.credit = Integer.parseInt(dollars) * 100 + Integer.parseInt(cents);
} catch (NumberFormatException e) {
throw new DataFormatException("Invalid credit field");
}
// validate
if (credit < 0) throw new DataFormatException("Credit field too small");
if (credit > Math.pow(10, Account.dollars_size + Account.cents_size) - 1)
throw new DataFormatException("Credit field too large");
}