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yami-shop-service/src/main/java/com/yami/shop/service/impl/BrandServiceImpl.java

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+/*
+ * Copyright (c) 2018-2999 广州市蓝海创新科技有限公司 All rights reserved.
+ *
+ * https://www.mall4j.com/
+ *
+ * 未经允许，不可做商业用途！
+ *
+ * 版权所有，侵权必究！
+ */
+
+package com.yami.shop.service.impl;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.yami.shop.bean.model.Brand;
+import com.yami.shop.dao.BrandMapper;
+import com.yami.shop.dao.CategoryBrandMapper;
+import com.yami.shop.service.BrandService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+/**
+ * 品牌服务实现类，提供品牌相关的业务逻辑
+ *
+ * @author lanhai
+ */
+@Service
+public class BrandServiceImpl extends ServiceImpl<BrandMapper, Brand> implements BrandService {
+
+	// 自动注入BrandMapper，用于操作品牌数据
+	@Autowired
+	private BrandMapper brandMapper;
+
+	// 自动注入CategoryBrandMapper，用于操作品牌与分类关系的数据
+	@Autowired
+	private CategoryBrandMapper categoryBrandMapper;
+
+	/**
+	 * 根据品牌名称查询品牌信息
+	 * @param brandName 品牌名称
+	 * @return 品牌对象
+	 */
+	@Override
+	public Brand getByBrandName(String brandName) {
+		return brandMapper.getByBrandName(brandName);
+	}
+
+	/**
+	 * 根据品牌ID删除品牌以及其与分类的关系
+	 * @param brandId 品牌ID
+	 */
+	@Override
+	public void deleteByBrand(Long brandId) {
+		brandMapper.deleteById(brandId);
+		categoryBrandMapper.deleteByBrandId(brandId);
+	}
+
+	/**
+	 * 根据分类ID查询品牌列表
+	 * @param categoryId 分类ID
+	 * @return 品牌列表
+	 */
+	@Override
+	public List<Brand> listByCategoryId(Long categoryId) {
+		return brandMapper.listByCategoryId(categoryId);
+	}
+
+}