Restaurant Application

1
Restaurant Application

• Clarifications

2
Actors and Use Cases

• Supervisor
• Generate EOD reports, Monitor table status, Take
  reservations, Assign group to table, Assign table
  to waiter,
• Waiter
• Take order, serve, bill,

3
Table Assignment

• Done upon restaurant opening
• Assume all waiters who will work that day will
  show up when the restaurant opens and will stay
  for the whole day
• Supervisor browses through all tables and selects
  a waiter for each table
• No assignments/changes will be done in the middle
  of the day

4
Orders

• Most common sequence order, serve, bill, pay
• Food/drinks may be served at different times
• Additional orders can be carried before bill is
  issued
• Order portions may be cancelled as long as they
  have not been served

5
Inventory, Payment

• No need to worry about item inventoryassume an
  unlimited supply, although you need to keep track
  of quantity of items sold
• Unpaid bills can occur and need to be reported
  (some impact on total sales and counts) assume a
  bill is paid entirely or not paid at all

6
Take-out Orders

• Carry-out (to-go) orders should be supported,
• Just assign to a single special table, so we can
  monitor carry outs
• Parallel carry-out orders is optional

7
Tables and Customers

• Should not assign a party to a table whose
  capacity is insufficient
• Need a way to assign capacities to table assume
  initialization is done before the system is
  operational, but allow updates
• Tables cannot be combined, for now ?

8
Service Times

• Need to keep track of
• Time between table was occupied and customer
  leaves table
• Time between customer first ordered and last
  item was served on table
• Need to know average and maximum service times on
  the table at the end of the day

9
Order versus Order Item

• Think carefully about the notion of an order
• For a given customer/party, there is a set of
  orders (several order comprise an order-set), or
  you can view order as the set and have
  order-items under it
• Do you need to have a class for the set?
• Maybe not, but I recommend that you have one
  anyway

10
Reservations

• Assume that a table is held once a reservation is
  made
• The table could be released at a future time,
  particularly if the customer does not show up on
  time