苍穹外卖--分类管理代码导入

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

@@ -0,0 +1,49 @@
+package com.sky.service;
+
+import com.sky.dto.CategoryDTO;
+import com.sky.dto.CategoryPageQueryDTO;
+import com.sky.entity.Category;
+import com.sky.result.PageResult;
+import java.util.List;
+
+public interface CategoryService {
+
+    /**
+     * 新增分类
+     * @param categoryDTO
+     */
+    void save(CategoryDTO categoryDTO);
+
+    /**
+     * 分页查询
+     * @param categoryPageQueryDTO
+     * @return
+     */
+    PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO);
+
+    /**
+     * 根据id删除分类
+     * @param id
+     */
+    void deleteById(Long id);
+
+    /**
+     * 修改分类
+     * @param categoryDTO
+     */
+    void update(CategoryDTO categoryDTO);
+
+    /**
+     * 启用、禁用分类
+     * @param status
+     * @param id
+     */
+    void startOrStop(Integer status, Long id);
+
+    /**
+     * 根据类型查询分类
+     * @param type
+     * @return
+     */
+    List<Category> list(Integer type);
+}

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

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+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.context.BaseContext;
+import com.sky.dto.CategoryDTO;
+import com.sky.dto.CategoryPageQueryDTO;
+import com.sky.entity.Category;
+import com.sky.exception.DeletionNotAllowedException;
+import com.sky.mapper.CategoryMapper;
+import com.sky.mapper.DishMapper;
+import com.sky.mapper.SetmealMapper;
+import com.sky.result.PageResult;
+import com.sky.service.CategoryService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.BeanUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import java.time.LocalDateTime;
+import java.util.List;
+
+/**
+ * 分类业务层
+ */
+@Service
+@Slf4j
+public class CategoryServiceImpl implements CategoryService {
+
+    @Autowired
+    private CategoryMapper categoryMapper;
+    @Autowired
+    private DishMapper dishMapper;
+    @Autowired
+    private SetmealMapper setmealMapper;
+
+    /**
+     * 新增分类
+     * @param categoryDTO
+     */
+    public void save(CategoryDTO categoryDTO) {
+        Category category = new Category();
+        //属性拷贝
+        BeanUtils.copyProperties(categoryDTO, category);
+
+        //分类状态默认为禁用状态0
+        category.setStatus(StatusConstant.DISABLE);
+
+        //设置创建时间、修改时间、创建人、修改人
+        category.setCreateTime(LocalDateTime.now());
+        category.setUpdateTime(LocalDateTime.now());
+        category.setCreateUser(BaseContext.getCurrentId());
+        category.setUpdateUser(BaseContext.getCurrentId());
+
+        categoryMapper.insert(category);
+    }
+
+    /**
+     * 分页查询
+     * @param categoryPageQueryDTO
+     * @return
+     */
+    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
+        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
+        //下一条sql进行分页，自动加入limit关键字分页
+        Page<Category> page = categoryMapper.pageQuery(categoryPageQueryDTO);
+        return new PageResult(page.getTotal(), page.getResult());
+    }
+
+    /**
+     * 根据id删除分类
+     * @param id
+     */
+    public void deleteById(Long id) {
+        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
+        Integer count = dishMapper.countByCategoryId(id);
+        if(count > 0){
+            //当前分类下有菜品，不能删除
+            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
+        }
+
+        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
+        count = setmealMapper.countByCategoryId(id);
+        if(count > 0){
+            //当前分类下有菜品，不能删除
+            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
+        }
+
+        //删除分类数据
+        categoryMapper.deleteById(id);
+    }
+
+    /**
+     * 修改分类
+     * @param categoryDTO
+     */
+    public void update(CategoryDTO categoryDTO) {
+        Category category = new Category();
+        BeanUtils.copyProperties(categoryDTO,category);
+
+        //设置修改时间、修改人
+        category.setUpdateTime(LocalDateTime.now());
+        category.setUpdateUser(BaseContext.getCurrentId());
+
+        categoryMapper.update(category);
+    }
+
+    /**
+     * 启用、禁用分类
+     * @param status
+     * @param id
+     */
+    public void startOrStop(Integer status, Long id) {
+        Category category = Category.builder()
+                .id(id)
+                .status(status)
+                .updateTime(LocalDateTime.now())
+                .updateUser(BaseContext.getCurrentId())
+                .build();
+        categoryMapper.update(category);
+    }
+
+    /**
+     * 根据类型查询分类
+     * @param type
+     * @return
+     */
+    public List<Category> list(Integer type) {
+        return categoryMapper.list(type);
+    }
+}