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24.12. Pet Store Example: The Do Checkout Rule
- The Do Checkout rule is part of the default (MAIN) agenda group. It always calls the doCheckout() functionwhich displays a 'Would you like to Checkout?' dialog box.
- The
doCheckout()function sets the focus to thecheckoutagenda-group, giving the rules in that group the option to fire. - The rules in the
checkoutagenda-group display the contents of the cart and apply the appropriate discount. - Swing then waits for user input to either checkout more products (and to cause the rules to fire again), or to close the GUI.
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