Module usecase 

Generic use cases — one per CRUD operation, composable via hooks.

Generated code emits a type alias per entity:

// Generated:
pub type CreateStoredFileUseCase = CreateUseCase<StoredFile, CreateStoredFileDto, StoredFileService>;
pub type UpdateStoredFileUseCase = UpdateUseCase<StoredFile, UpdateStoredFileDto, StoredFileService>;
// ... etc.

Custom behaviour is injected through UseCaseHooks<E, DTO> — no generated code modification required.

Lifecycle (Create example)

before_create(dto) → build entity → validate → after_create(entity) → persist → publish event

Structs

CreateUseCase

Generic “create entity” use case.

DefaultHooks

Default no-op hooks implementation.

DeleteUseCase

Generic “delete entity” use case (soft-delete by default).

GetUseCase

Generic “get by id” use case.

ListParams

Paginated list parameters.

ListResult

Paginated list result.

ListUseCase

Generic paginated list use case.

UpdateUseCase

Generic “update entity” use case.

Enums

UseCaseError

The standard error type for all use case operations.

Traits

EntityFactory

Builds an entity from a Create DTO.

EntityUpdater

Applies update fields from an Update DTO to an existing entity.

ListService

Service contract for the list use case (separate because it needs pagination).

UseCaseHooks

Extension points for every CRUD use case.

UseCaseService

The minimal persistence + lookup contract required by all use cases.

Type Aliases

UseCaseResult