DataSource에서? Repository에서?

[Choe-Ji-Hwan]

이슈:

• Mapping(data layter -> domain) 작업을 DataSource? Repository? 어디서 할까?

• Mapper를 DataSource에서 하는 경우

        momentDao.getMoments().map { moments ->
            moments.map { moment ->
                moment.toDomain(
                    momentDao.getLocation(moment.locationId),
                    momentDao.getPictures(moment.id),
                    momentDao.getGlobes(moment.id)
                )
            }
        }

• Mapper를 Repository에서 하는 경우

• Mapper 함수

fun MomentEntity.toDomain(
    location: LocationEntity, pictures: List<PictureEntity>, globes: List<GlobeEntity>
): Moment = Moment(
    location.mainAddress,
    location.detailAddress,
    pictures.map { it.bitmap },
    this.content,
    globes.map { it.name },
    this.date
)

참고 자료

• 안드로이드 앱 아키텍처 가이드 -> Repository 역할

Repository classes are responsible for the following tasks:

Exposing data to the rest of the app.
Centralizing changes to the data.
Resolving conflicts between multiple data sources.
Abstracting sources of data from the rest of the app.
Containing business logic.