Add support for Use Case Extends
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Key: BPM-204
URL: http://jira.andromda.org/browse/BPM-204
Project: Bpm4Struts Cartridge
Type: New Feature
Reporter: Gary Struthers
Assigned to: Wouter Zoons
Priority: Minor
Use case extensions are good for specializing base use cases with optional
behavior and cross cutting concerns. The base use case is complete by itself,
it’s the common behavior. The extension use case isn’t useable by itself, it
adds specialized behavior. Ivar Jacobsen wrote an article last year equating
aspects with use case extensions.
It’s the equivalent of splicing a fragment of an activity diagram into another
activity diagram.
I’m guessing here, but I think the way it could work is by naming an extension
point of the base use case with a point in the activity diagram. It could be an
activity, or transition, or a decision point whichever is easiest to implement.
The extension use case would be spliced into that point, its activity diagram’s
initial state and final state would be the extension point. An extension use
case could be reused to extend different base use cases.
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