// COBOL Programmers Swing With Java - copyright 2005 Doke, Hardgrave, & Johnson
// Chapter 11 - OO Development Issues
//  Problem Domain Class for CheckingAccount
//  Interfaces with Data Access class
// CheckingAccountPD.java 1 JAN 05

public class CheckingAccountPD extends Account
{
    // instance variable
    private float minimumBalance;  // private scope limited to this class

    public static void initialize()
	{CheckingAccountDA.initialize();}  // call initialize in Data Access

    public static void terminate()
	{CheckingAccountDA.terminate();}   // call terminate in Data Access

    // constructor method
    public CheckingAccountPD (int newAccountNumber,float newCurrentBalance)
    { // invoke account constructor to populate account attributes
       super (newAccountNumber, newCurrentBalance);
       minimumBalance = newCurrentBalance;  // populate checkingAccount attribute
   } // end constructor

    // note this is a class method to record a check - we also have an instance method
    public static CheckingAccountPD recordACheck (int accountNumber, float checkAmount) throws NoAccountFoundException, NSFException
    {
	try
	{  // ask Data Access class to get the account instance for us
	CheckingAccountPD anAccount = CheckingAccountDA.getAccount(accountNumber);
	anAccount.recordACheck(checkAmount);  // if successful, post check for this instance
	return anAccount;                     // return the instance reference variable
	}
	catch (NoAccountFoundException e)  // No Account Found
	{ throw e;}
	catch (NSFException e)		    // Not Sufficient Funds
	{ throw e;}
    }  // end class method recordACheck

   // instance method to post a check to this account
    public void recordACheck (float checkAmount) throws NSFException
    {
	float currentBalance = getCurrentBalance();
	if (currentBalance >= checkAmount)  // see if sufficient funds
	    {
	    currentBalance = currentBalance - checkAmount;
	    setCurrentBalance(currentBalance);
	    // update the balance in the database
	    CheckingAccountDA.updateAccount(getAccountNumber(),currentBalance);
	    }
	else
	    {
	    NSFException e = new NSFException("Not Sufficient Funds"); // if not, throw an exception
	    throw e;
	    } // end if
    }  // end instance method recordACheck
}  // end CheckingAccountPD.java