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89 lines
3.4 KiB
89 lines
3.4 KiB
package com.aurora.service.impl;
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import com.aurora.model.dto.CategoryAdminDTO;
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import com.aurora.model.dto.CategoryDTO;
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import com.aurora.model.dto.CategoryOptionDTO;
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import com.aurora.entity.Article;
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import com.aurora.entity.Category;
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import com.aurora.exception.BizException;
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import com.aurora.mapper.ArticleMapper;
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import com.aurora.mapper.CategoryMapper;
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import com.aurora.service.CategoryService;
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import com.aurora.util.BeanCopyUtil;
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import com.aurora.util.PageUtil;
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import com.aurora.model.vo.CategoryVO;
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import com.aurora.model.vo.ConditionVO;
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import com.aurora.model.dto.PageResultDTO;
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import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
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import com.baomidou.mybatisplus.core.toolkit.StringUtils;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import lombok.SneakyThrows;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import java.util.List;
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import java.util.Objects;
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@Service
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public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {
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@Autowired
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private CategoryMapper categoryMapper;
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@Autowired
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private ArticleMapper articleMapper;
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@Override
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public List<CategoryDTO> listCategories() {
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return categoryMapper.listCategories();
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}
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@SneakyThrows
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@Override
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public PageResultDTO<CategoryAdminDTO> listCategoriesAdmin(ConditionVO conditionVO) {
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Integer count = categoryMapper.selectCount(new LambdaQueryWrapper<Category>()
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.like(StringUtils.isNotBlank(conditionVO.getKeywords()), Category::getCategoryName, conditionVO.getKeywords()));
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if (count == 0) {
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return new PageResultDTO<>();
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}
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List<CategoryAdminDTO> categoryList = categoryMapper.listCategoriesAdmin(PageUtil.getLimitCurrent(), PageUtil.getSize(), conditionVO);
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return new PageResultDTO<>(categoryList, count);
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}
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@SneakyThrows
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@Override
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public List<CategoryOptionDTO> listCategoriesBySearch(ConditionVO conditionVO) {
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List<Category> categoryList = categoryMapper.selectList(new LambdaQueryWrapper<Category>()
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.like(StringUtils.isNotBlank(conditionVO.getKeywords()), Category::getCategoryName, conditionVO.getKeywords())
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.orderByDesc(Category::getId));
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return BeanCopyUtil.copyList(categoryList, CategoryOptionDTO.class);
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}
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@Override
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public void deleteCategories(List<Integer> categoryIds) {
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Integer count = articleMapper.selectCount(new LambdaQueryWrapper<Article>()
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.in(Article::getCategoryId, categoryIds));
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if (count > 0) {
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throw new BizException("删除失败，该分类下存在文章");
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}
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categoryMapper.deleteBatchIds(categoryIds);
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}
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@Override
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public void saveOrUpdateCategory(CategoryVO categoryVO) {
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Category existCategory = categoryMapper.selectOne(new LambdaQueryWrapper<Category>()
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.select(Category::getId)
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.eq(Category::getCategoryName, categoryVO.getCategoryName()));
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if (Objects.nonNull(existCategory) && !existCategory.getId().equals(categoryVO.getId())) {
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throw new BizException("分类名已存在");
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}
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Category category = Category.builder()
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.id(categoryVO.getId())
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.categoryName(categoryVO.getCategoryName())
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.build();
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this.saveOrUpdate(category);
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}
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}
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