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Separação tecnologia da implementação da regra do negócio. Com isso mudar de tecnologia de persistência e framework web fica bem mais fácil
post("/") {
contentType = "application/json"
authenticated { jsonObject =>
val entityManager = entityManagerFactory.createEntityManager()
val userRepository = new UserRepository(entityManager)
val userPersistenceAdapter = new NewUserPersistenceAdapterJPA(userRepository)
val usecase = new NewUserUsecase(userPersistenceAdapter)
val savedUser = usecase.save( User( jsonObject ) )
writeOkResponse( ProtocolResponse.prepare(savedUser.state) )
}
}
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