content: package com.sky.mapper;
  
  import com.sky.entity.ShoppingCart;
  import org.apache.ibatis.annotations.Delete;
  import org.apache.ibatis.annotations.Insert;
  import org.apache.ibatis.annotations.Mapper;
  import org.apache.ibatis.annotations.Update;
  
  import java.util.List;
  
  @Mapper
  public interface ShoppingCartMapper {
  
      /**
       * 查询购物车
       * 
       * @param shoppingCart
       * @return List<ShoppingCart>
       */
      List<ShoppingCart> list(ShoppingCart shoppingCart);
  
      /**
       * 根据id更新购物车数量
       * 
       * @param shoppingCart
       */
      @Update("update sky_take_out.shopping_cart set number = #{number} where id = #{id}")
      void updateNumberById(ShoppingCart shoppingCart);
  
      /**
       * 添加购物车
       * 
       * @param shoppingCart
       */
      @Insert("insert into sky_take_out.shopping_cart (user_id, dish_id, setmeal_id, name, image, amount, number, dish_flavor, create_time) "
              +
              "values " +
              "(#{userId}, #{dishId}, #{setmealId}, #{name}, #{image}, #{amount}, #{number}, #{dishFlavor}, #{createTime})")
      void insert(ShoppingCart shoppingCart);
  
      /**
       * 清空购物车
       * 
       * @param userId
       */
      @Delete("delete from sky_take_out.shopping_cart where user_id = #{userId}")
      void deleteByUserId(Long userId);
  
      /**
       * 根据id删除购物车
       * 
       * @param id
       */
      @Delete("delete from sky_take_out.shopping_cart where id = #{id}")
      void deleteById(Long id);
  
      /**
       * 批量插入购物车数据
       *
       * @param shoppingCartList
       */
      void insertBatch(List<ShoppingCart> shoppingCartList);
  }
  