package com.demo.service;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Component;

import com.demo.dao.UserDao;
import com.demo.domain.User;

@Component
public class UserService {

	private UserDao userDao;
	
	
	public UserDao getUserDao() {
		return userDao;
	}
	@Resource(name="userDao")
	public void setUserDao(UserDao userDao) {
		this.userDao = userDao;
	}

	/**
	 * 添加一个用户
	 * @param u
	 */
	public void add(User u){
		userDao.save(u);
	}
	/**
	 * 查询所有的用户
	 * @return 
	 */
	public List<User> getAll(){
		
		return userDao.getAll();
	}
	/**
	 * 删除一个User
	 * @param id
	 */
	public void deleteUser(int id){
		
		userDao.deleteUser(id);
	}
	/**
	 * 根据id查询一个用户
	 * @param id
	 * @return
	 */
	public User getUser(int id){
		return userDao.queryUser(id);
	}
	/**
	 * 更新一个user
	 * @param u
	 */
	public void updateUser(User u){
		userDao.updateUser(u);
	}
}