Struts University
Added by Ted Husted, last edited by Ted Husted on Nov 03, 2005  (view change)
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Struts Classic Use Cases

  • Use cases tell coherent stories about the how the story will behave in use.
  • Use cases are requirements, but not all of the requirements.
  • Use cases capture contracts between the stakeholders of a system about its behavior.
  • Use Cases describe how actors achieve goals.
  • For more see, Writing Effective Use Cases by Cockburn.

Use Case Development Lifecycle

  1. Actors and Goals
  2. Use Case Briefs (stories)
  3. Priority
  4. Usage Narrative
  5. Main Success Scenario
  6. Failure Conditions
  7. Failure Handling

Guidelines

  • Use simple grammar.
  • Show clearly "who has the ball".
  • Write from the bird's eye view.
  • Show the process moving forward.
  • Show the Actor's intent, not the movements.
  • Include a "reasonable" set of actions
  • "Validate", don't "Check whether".
  • Optionally, mention the timing.
  • Idiom: "User has System A kick System B".
  • Idiom: "Do Steps x-y until condition."

Defaults

  • If an extension simply returns to the next step, then "Return to MSS" can be omitted.
  • Extensions can be nested one level deep.
  • Extension steps can be numbered using the newer "dot" convention.
  • The "System Under Design" can be referred to in the third person.
  • If System is going to display the expected screen as the next step, and there are no extensions, a "System presents (expected) screen" step can be omitted.

References

  • Structuring Use Cases with Goals
  • Writing Effective Use Cases

Vision Statement

  • Encourage application architectures based on the "Model 2" approach, a variation of the classic Model-View-Controller (MVC) design paradigm.

Design Scope UML Drawing

TODO ...

Design Scope Topics (In/Out)

Topic In Out
Business Logic  
Data Access Logic  
Request Processing  
Command Mapping  
Server-side Validation  
Client-side Validation  
HTML 4.1 Markup  
HTML 4.1 Extensions   As to existing Taglib subproject
Page Composition  
Secure (SSL) mode  
JAAS Authorization  
Custom Authorization  

Stakeholders

Stakeholder Interests
   

Actors

Actor Behavior
   

Core Use Cases

Priority Actor Goal Story or Brief
       

Taglib Use Cases

Priority Actor Goal Story or Brief
       

EL Use Cases

Priority Actor Goal Story or Brief
       

Validator Use Cases

Priority Actor Goal Story or Brief
       

Tiles Use Cases

Priority Actor Goal Story or Brief
       

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