UseCase Types

Use cases are the heart of the domain layer. Zuraffa v3 supports multiple styles, with dependencies injected via repositories or services. Data sources stay in the data layer, and providers can be used in the presentation layer when needed.

Standard use case

Single-shot operations that return a Result.

zfa generate Product --methods=get,getList

Completable use case

Use when there is no return value.

zfa generate Product --methods=delete

Stream use case

Use for live updates or subscriptions.

zfa generate Product --methods=watch,watchList

Sync use case

Use for immediate, synchronous operations.

zfa generate IsWalkthroughRequired --type=sync --params=Customer --returns=bool

Background use case

Runs on an isolate for CPU-heavy work.

zfa generate CalculatePrimeNumbers --type=background --params=int --returns=int

Orchestrator use case

Composes existing use cases into a workflow.

zfa generate ProcessCheckout --domain=checkout --usecases=ValidateCart,CreateOrder,ProcessPayment --params=CheckoutRequest --returns=Order