Class semper.payment.AccountBasedPurse
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Class semper.payment.AccountBasedPurse

java.lang.Object
   |
   +----semper.payment.Purse
           |
           +----semper.payment.AccountBasedPurse

public class AccountBasedPurse
extends Purse
Generic representation of an account based payment system
Version:
$Revision: 1.4 $ $Date: 1997/02/25 10:49:07 $
Author:
N. Asokan (aso@zurich.ibm.com)
See Also:
Purse

Constructor Index

 o AccountBasedPurse()

Method Index

 o getAmountFromBank()
Get the amount (balance) in our bank account.

Constructors

 o AccountBasedPurse
  public AccountBasedPurse()

Methods

 o getAmountFromBank
  public Amount getAmountFromBank() throws AmountNotApplicable, PaymentServiceException
Get the amount (balance) in our bank account. The value of the amount can be positive or negative, the latter indicating money owed. This makes sense only for account-based payment systems. The amount is retrieved by asking the bank that maintains the account. Contrast this with the getAmount() method which returns the amount according to the local state of the purse.

This method may have the side-effect of updating the local balance (maintained as part of the local state) of the purse.

Returns:
amount according to the bank account
Throws: AmountNotApplicable
in those systems where it is not possible to check the bank balance
Throws: PaymentServiceException
for other miscellaneous errors
See Also:
getAmount

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