UML Weekend Crash Course™ - To Parent Directory

228
Sunday Morning
receivePmt(amt)[amt not < amt_due]/
placeOrder()
Tentative
authorizeOverride(mgr)/
placeOrder()
Placed
On entry/issueConf()
Cancelled
cancel(datetime)
packed(packer)/
setPacked()
Packaged
after 3 days/upgradeShippingPriority()
when today <
(last update +90 days)/
setArchived()
shipped(carrier, datetime)/
setShipped(),
Customer.notify(Shipment, Order)
Shipped
Figure 22-1
when today < (last update + 90 days)/
setArchived()
The Statechart for a typical Order object
Call event
A call event is the most common event type. It is basically the invocation of an operation
on the receiving object. This type of event is the merge of an event and an event action.
The event itself is an instruction to perform an operation. However, this doesn’t prevent you
from adding other actions. Figure 22-2 shows the transition from Placed to Cancelled. The
transition is triggered by the cancel(datetime) event. “cancel(datetime)” is actually the
operation signature on the Order.