package fr.eni.demo.bll; import fr.eni.demo.bo.Client; import fr.eni.demo.dal.ClientRepository; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.Optional; @Service public class ClientService { @Autowired private ClientRepository clientRepository; public void add(Client client) { clientRepository.save(client); } public Optional findById(Long clientId) { return clientRepository.findById(clientId); } }