PB007 Software Engineering I — Activity Diagram1
Activity Diagram
PB007 Software Engineering I
Lukáš Daubner
daubner@mail.muni.cz
PB007 Software Engineering I — Activity Diagram2
Activity Diagram
What can the activity diagram represent?
PB007 Software Engineering I — Activity Diagram3
Activity Diagram
What can the activity diagram represent?
̶ Activities – Who would have guessed ;)
PB007 Software Engineering I — Activity Diagram4
Activity Diagram
What can the activity diagram represent?
̶ Activities – Who would have guessed ;)
̶ Use Cases
̶ Business Processes
̶ Algorithms
̶ Operations, metody, ...
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Activity Diagram
̶ Flow of events and actions in an activity
̶ It consists of different types of nodes, connected with edges
̶ Action
̶ Event (asynchronous behavior)
̶ Time events
̶ Parallel flow
̶ Branching
̶ Typically, it is a sequence of commands (Control Flow), but data
can be represented as well (Object Flow)
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Activity Diagram – Example
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Swimlines
̶ Logical grouping of related actions
̶ Context of actors, use cases, etc..
̶ If use case is modelled, they can be «include» and «extend»
̶ «include»
̶ Base and included use case have their own swimlanes.
̶ «extend»
̶ If there is an extension point between two actions, decision node is added in between, from
which it is possible to move to the extended use case. Afterwards, the control is returned
by merge node.
̶ Base and extended use case have their own swimlanes.
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Swimlines – Include & Extend
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Work, work
In this seminar…
̶ Feedback
̶ Activity
̶ Visual Paradigm demo
̶ Team work on project
̶ Activity Diagram
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You gotta do what you gotta do
Task for this week
̶ Process the feedback
̶ Choose two use cases and create activity diagrams for them
̶ Adequately™ complex (meaning no three-action diagrams)
̶ Choose different use cases than those for textual specification
̶ Submit the report
̶ Don’t forget to include work from previous weeks
̶ Do your part in peer review
̶ Link to roster is in study materials