Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package top.lionxxw.bookingcar.domain.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import top.lionxxw.bookingcar.domain.entity.Entity; import top.lionxxw.bookingcar.domain.entity.User; import top.lionxxw.bookingcar.domain.repository.UserRepository; import top.lionxxw.bookingcar.domain.service.BaseService; import top.lionxxw.bookingcar.domain.service.UserService; import java.util.Collection; /** * * @author darren.shuxing.liu * */ @Service("userService") public class UserServiceImpl extends BaseService<User, String> implements UserService { private UserRepository<User, String> userRepository; /** * * @param userRepository */ @Autowired public UserServiceImpl(UserRepository<User, String> userRepository) { super(userRepository); this.userRepository = userRepository; } @Override public void add(User user) throws Exception { if (userRepository.containsName(user.getName())) { throw new Exception(String.format("There is already a product with the name - %s", user.getName())); } if (user.getName() == null || "".equals(user.getName())) { throw new Exception("Booking name cannot be null or empty string."); } super.add(user); } /** * * @param name * @return * @throws Exception */ @Override public Collection<User> findByName(String name) throws Exception { return userRepository.findByName(name); } /** * * @param user * @throws Exception */ @Override public void update(User user) throws Exception { userRepository.update(user); } /** * * @param id * @throws Exception */ @Override public void delete(String id) throws Exception { userRepository.remove(id); } /** * * @param id * @return * @throws Exception */ @Override public Entity findById(String id) throws Exception { return userRepository.get(id); } }