Use-Case Realization Structure

Last updated: May 24, 2006                     

Objectives: After completing this module, you'll be able to

• Explain the importance of the use-case realization structure in organizing your model

• Use the Rose tool to create the use-case realization structure for your interaction and class diagrams

• Use the Rose tool to create a traceabilities diagram to visually show the contract between use-case realization and use case

The Use-Case Realization Structure:

• How will you make the transition from what the system should do to how it will do it?

  • You begin by creating a use-case realization structure in the Logical View

  

• The use-case realization structure helps to organize the model elements needed to realize the use cases in the design model

• The use-case realization structure includes the following elements

  • Use-case realization packages

  • Traceabilities diagrams

  • Interaction diagrams

  • Class diagrams

Use-Case Realization Packages:

• Use-case realization packages are a means for organizing a use case's class and interaction diagrams

• For the use-case realization structure, you will first create a package called Use-case to be realized in the design model

Tracebilities Diagrams:

• The tracebilities diagram represents what you will build in the system.

Create Use-Case Realization Structure:

• Add Use-Case Realization Package:

  • Open Lab4_2.mdl

  • Expand Use Case View -> Expand Use-Case Model -> Expand Use Cases

  • Expand Logical View -> Expand Design Model -> Expand Use-Case Realizations

  • Determine the remaining use cases that need use-case realization structures

  • Add and name the remaining packages under the Use-Case Realizations packages

    • Make sure that you name the package the same as the use case. Ignore the namespace warning

• Add Use-Case Realizations to the Browser:

  • Right-click the use-case realization package -> Add a new use case

    • Name it the same as its package

  • Double-click the use case -> In Specification window, click use-case realization in the Stereotype list.

    • Note what happens to the icon in the browser

    

  • Repeat above steps for each use-case realization

• Create Traceabilities Diagrams

  • Create a class diagram called Realize Dependency under a use-case realization package

  • Open the Realize Dependency -> Drag the use case from the Use Case View on to the diagram

  • Drag the newly created use-case realization from the logical View on to the diagram

  • Click the Realize icon on the diagram toolbar, and then drag it from the use-case realization to the use case

  

  • Repeat above steps for each use-case realization