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SYST39409 – Object Oriented Methodologies

I‐C‐E‐06

The following is to be completed using System Architect and handed in before the end
of class.

Case Study

Given the following description of a Certified Parcel Shipments (CPS) shipment first
identify all of the states and exit transitions, and then develop a state chart.

A shipment is first recognized after it has been picked up from a customer.  Once it is in
the system it is considered to be active and in transit.  Every time it goes through a
checkpoint, such as arrival at an intermediate destination, it is scanned and a record is
created indicating the time and place of the checkpoint scan.  The status changes when
it is placed on the delivery truck. It is still active, but now it is also considered to have a
status of delivery pending.  Of course, once it is delivered the status changes again.
From time to time, a shipment has a destination that is outside of the area serviced by
CPS.  In those cases, CPS has working relationships with other couriers.  Once a package
is handed off to another courier, it is noted as being handed over.  In those instances, a
tracking number for the new courier is recorded (if it is provided).  CPS also asks the new
courier to provide a status change notice once the package has been delivered.
Unfortunately, from time to time a package gets lost.  In those cases, it remains in an
active state for two weeks, but is also marked as misplaced.    If after two weeks it has
not been found, it is considered lost.  At that point the customer can initiate lost
procedures to recover any damages.

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