Задача: Извлечение поведения прецедента на основе состояний

Эта задача определяет поведение блока прецедента на основе его состояний.

Дисциплины: System Engineering Requirements

Назначение

To define the state-based behavior for a use-case block to support verification/validation of a use case through model execution.

Взаимосвязи

Родительские практики выполнения	Системная инженерия - прецедентный подход
Роли	Основной исполнитель: Инженер требований	Дополнительные исполнители:
Входы	Обязательный: Диаграмма внутренних блоков системного прецедента Диаграмма деятельности системного прецедента Диаграмма последовательности системного прецедента Системный прецедент	Необязательный: Нет
Выходы	Диаграмма состояний системного прецедента

Основное описание

In order to verify/validate a use case model through model execution, its state-based behavior needs to be described in a statechart diagram. The derivation of the statechart is based on the functional description, captured in the use-case black-box activity diagram and the associated use-case black-box sequence diagrams. The verification/validation of the detailed architectural design is performed through model execution on the bases of stimuli derived from the black-box sequence diagrams.

Шаги

Identify wait states and action states

Based on the use-case black-box activity diagram and associated use-case black-box sequence diagrams identify wait states and action states. See Deriving Statechart Diagrams for more information.

Identify transitions, triggering events and associated actions

Based on the analysis of the use-case black-box sequence diagrams identify transitions, triggering events and/or guarded condition(s), and associated action(s). See Deriving Statechart Diagrams for more information.

Execute the Statechart

Verify the correctness of the captured state-based behavior through model execution using the use case black-box scenarios as the basis for respective stimuli.

Refactor the Statechart

Once the use case state-based behavior of the use case is captured, look for ways to simplify it by re-structuring the Statechart hierarchically. See Deriving Statechart Diagrams for more information.

Execute the Hierarchical Statechart

Verify the correctness of the captured state-based behavior through model execution using the black-box use-case scenarios as the basis for respective stimuli.

Дополнительные сведения

Рекомендации	Deriving Statechart Diagrams Rhapsody Action Language Usage of the Activity Chart Information in the SE Workflow