Ddd Aggregate Creator

Event-sourced implementation (default)

Follow this unless the user explicitly requests otherwise.

1. Add aggregate class in Domain:
   • Keep parameterless/private constructor for rehydration.
   • Use static factory (New or Create) to raise creation event.
   • Implement command methods that enforce invariants and raise events.
   • Implement Apply(...) methods and When(object @event) switch.
   • Increment Version in non-creation Apply(...) methods where existing service does so.
2. Add domain event records:
   • Match local placement pattern:
     • doses: event files next to aggregate file.
     • speedy-glove-manager: DomainEvents/ subfolder.
   • Use DateTimeOffset.UtcNow in event factory unless target service uses another established pattern.
3. Update Infrastructure registration:
   • Register IEventStoreRepository<NewAggregate, TId> in InfrastructureServiceCollectionExtension.
   • If service uses projections/read models for the aggregate, wire projector and query handlers consistently.
4. Update Application use cases to consume IEventStoreRepository<NewAggregate, TId>.

For concrete event-sourced checklist and snippet shape, read references/event-sourced.md.

Non-event-sourced implementation (explicit opt-out)

Use only when user explicitly asks for non-event-sourced aggregate.

1. Model aggregate/entity with direct state mutation and invariants.
2. Add/extend Domain repository interface.
3. Implement repository in Infrastructure and register it in DI.
4. Update Application use cases to call the domain repository interface.

For concrete non-event-sourced checklist, read references/non-event-sourced.md.

Cross-cutting rules

• Keep Domain free of Infrastructure concerns.
• Keep constructor/factory and naming conventions aligned with the service.
• Use this. qualification, explicit types where required, and established namespace/folder layout.
• Do not add new architectural patterns not already present in the target service.
• Prefer small, focused changes and update only required registrations/projections/tests.