批量删除菜品

sky-server/src/main/java/com/sky/service/DishService.java

@@ -1,8 +1,12 @@
 package com.sky.service;
 
 import com.sky.dto.DishDTO;
+import com.sky.dto.DishPageQueryDTO;
+import com.sky.result.PageResult;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+
 @Service
 public interface DishService {
 
@@ -11,4 +15,17 @@ public interface DishService {
      * @param dishDTO
      */
     void saveWithFlavor(DishDTO dishDTO);
+
+    /**
+     * 菜品分页查询
+     * @param pageQueryDTO
+     * @return
+     */
+    PageResult pageQuery(DishPageQueryDTO pageQueryDTO);
+
+    /**
+     * 菜品批量删除
+     * @param ids
+     */
+    void deleteBatch(List<Long> ids);
 }

sky-server/src/main/java/com/sky/service/impl/DishServiceImpl.java

@@ -1,11 +1,20 @@
 package com.sky.service.impl;
 
+import com.github.pagehelper.Page;
+import com.github.pagehelper.PageHelper;
+import com.sky.constant.MessageConstant;
+import com.sky.constant.StatusConstant;
 import com.sky.dto.DishDTO;
+import com.sky.dto.DishPageQueryDTO;
 import com.sky.entity.Dish;
 import com.sky.entity.DishFlavor;
+import com.sky.exception.DeletionNotAllowedException;
 import com.sky.mapper.DishFlavorMapper;
 import com.sky.mapper.DishMapper;
+import com.sky.mapper.SetmealDishMapper;
+import com.sky.result.PageResult;
 import com.sky.service.DishService;
+import com.sky.vo.DishVO;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -23,6 +32,8 @@ public class DishServiceImpl implements DishService {
     private DishMapper dishMapper;
     @Autowired
     private DishFlavorMapper dishFlavorMapper;
+    @Autowired
+    private SetmealDishMapper setmealDishMapper;
 
     /**
      * 新增菜品
@@ -50,4 +61,45 @@ public class DishServiceImpl implements DishService {
         }
 
     }
+
+    /**
+     * 菜品分页查询
+     * @param pageQueryDTO
+     * @return
+     */
+    @Override
+    public PageResult pageQuery(DishPageQueryDTO pageQueryDTO) {
+        //设置分页
+        PageHelper.startPage(pageQueryDTO.getPage(), pageQueryDTO.getPageSize());
+        Page<DishVO> page = dishMapper.pageQuery(pageQueryDTO);
+        return new PageResult(page.getTotal(),page.getResult());
+    }
+
+    /**
+     * 菜品批量删除
+     * @param ids
+     */
+    @Override
+    @Transactional
+    public void deleteBatch(List<Long> ids) {
+        //判断菜品是否能够删除
+        //是否有起售中菜品
+        for (Long id : ids) {
+            Dish dish = dishMapper.selectById(id);
+            if (dish.getStatus().equals(StatusConstant.ENABLE)){
+                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
+            }
+        }
+        //是否关联套餐
+        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
+        if (setmealIds != null && !setmealIds.isEmpty()){
+            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
+        }
+        //删除菜品
+        for (Long id : ids) {
+            dishMapper.deleteById(id);
+            //删除菜品口味
+            dishFlavorMapper.deleteByDishId(id);
+        }
+    }
 }