Logistics E-mail UML 2 Should have received mail from me. If - PDF document

Logistics • E-mail UML 2 – Should have received mail from me. – If not: • Check LDAP entry • Indicate on attendance sheet Announcements Plan for today • It’s Co-op time • Building a software system – Orientation – Documenting your design using UML – Wednesday, Sept 17 th , 4:00 pm – 5:30 pm, 77- – Last time we looked at: A190 – Thursday, Sept 18 th , 12:00 pm – 1:30 pm, 70- 1455 • Class Diagram – Friday, Sept 19 th , 1:00 pm – 2:30 pm, 76- 1125 • Use Case Diagram – Friday, Sept 26 th , 1:00 pm – 2:30 pm, 76- 1125 – Today – Tuesday, Oct 7 th , 1:00 pm – 2:30 pm, 76- 1125 – Wednesday, Oct 22 nd , 4:00 pm – 5:30 pm, 77- A190 • Sequence Diagram • Job Fair • Rose Demo – Wednesday, Oct 15, 1-6pm, Clark Gym Class Diagram – Summary Use Case – Relationships

Sequence Diagram Sequence Diagram • Messages – A communication between objects – Types: • Call and return – Calls a method on an object and waits for it’s return • Create action – creates a new object • Destroy action – destroys an existing object • Send – A signal is sent to an object. Asynchronous! Sending object does NOT wait for ack or return • A Sequence Diagram illustrates time ordering of messages that go back and forth between objects in performing a given scenario Sequence Diagram – Messages Sequence Diagram – Messages • Return values – dotted arrow � Create – object suddenly appears Object 1 Object 2 action() Object 1 return type � Destroy – object Xed out create Object 2 Object 1 Object 2 destroy Sequence Diagram – Messages Sequence Diagram -- Summary • Send – Half arrow • Illustrates time ordering of messages that go back and forth between objects in Object 1 Object 2 performing a given scenario action() – show examples of important interactions; they � Objects / classes can talk to themselves are not graphical representations of method code Object 1 • Questions action()

The Microwave Example The Microwave Example • There is a single control button available for the • There is a light inside the oven. user of the oven. – Anytime the oven is cooking, the light must be – If the oven door is closed and you push the button, the turned on. oven will cook (energize the power tube) for 1 minute. – Any time the door is open, the light must be on. – If you push the button at any time when the oven is – If you close the door, the light goes out. cooking, you get an additional minute of cooking time. – Pushing the button when the door is open has no effect. – If the oven times out, it turns off both the power tube and the light. It then emits a warning beep – Opening the door stops the cooking and clears the timer to 0. to tell you that it is finished. Demo time • Example / demo of building UML diagrams using Rational Rose.