LingandRX
8150192b1b
- 新增 Category、Collection、Comment 等实体类 - 实现笔记查询、分类、收藏、评论等功能 - 添加 Markdown 解析工具类 - 新增用户点赞和收藏功能 - 实现问题查询和统计功能
95 lines
3.6 KiB
XML
95 lines
3.6 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
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<mapper namespace="com.example.copykamanotes.mapper.CommentMapper">
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<!-- 评论结果映射 -->
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<resultMap id="commentMap" type="com.example.copykamanotes.model.entity.Comment">
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<id property="commentId" column="comment_id"/>
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<result property="noteId" column="note_id"/>
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<result property="authorId" column="author_id"/>
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<result property="parentId" column="parent_id"/>
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<result property="content" column="content"/>
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<result property="likeCount" column="like_count"/>
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<result property="replyCount" column="reply_count"/>
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<result property="createdAt" column="created_at"/>
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<result property="updatedAt" column="updated_at"/>
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</resultMap>
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<!-- 插入评论 -->
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<insert id="insert" useGeneratedKeys="true" keyProperty="commentId">
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INSERT INTO comment (
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note_id, author_id, parent_id, content,
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like_count, reply_count, created_at, updated_at
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) VALUES (
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#{noteId}, #{authorId}, #{parentId}, #{content},
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#{likeCount}, #{replyCount}, #{createdAt}, #{updatedAt}
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)
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</insert>
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<!-- 更新评论 -->
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<update id="update">
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UPDATE comment
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<set>
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<if test="content != null">content = #{content},</if>
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<if test="likeCount != null">like_count = #{likeCount},</if>
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<if test="replyCount != null">reply_count = #{replyCount},</if>
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updated_at = CURRENT_TIMESTAMP
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</set>
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WHERE comment_id = #{commentId}
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</update>
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<!-- 删除评论 -->
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<delete id="deleteById">
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DELETE FROM comment WHERE comment_id = #{commentId}
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</delete>
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<!-- 根据ID查询评论 -->
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<select id="findById" resultMap="commentMap">
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SELECT * FROM comment WHERE comment_id = #{commentId}
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</select>
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<!-- 查询评论列表 -->
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<select id="findByQueryParam" resultMap="commentMap">
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SELECT * FROM comment
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<where>
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<if test="params.noteId != null">AND note_id = #{params.noteId}</if>
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<if test="params.parentId != null">AND parent_id = #{params.parentId}</if>
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<if test="params.authorId != null">AND author_id = #{params.authorId}</if>
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</where>
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ORDER BY created_at DESC
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LIMIT #{pageSize} OFFSET #{offset}
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</select>
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<!-- 统计评论数量 -->
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<select id="countByQueryParam" resultType="int">
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SELECT COUNT(*) FROM comment
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<where>
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<if test="params.noteId != null">AND note_id = #{params.noteId}</if>
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<if test="params.parentId != null">AND parent_id = #{params.parentId}</if>
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<if test="params.authorId != null">AND author_id = #{params.authorId}</if>
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</where>
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</select>
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<!-- 增加评论点赞数 -->
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<update id="incrementLikeCount">
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UPDATE comment SET like_count = like_count + 1
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WHERE comment_id = #{commentId}
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</update>
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<!-- 减少评论点赞数 -->
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<update id="decrementLikeCount">
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UPDATE comment SET like_count = like_count - 1
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WHERE comment_id = #{commentId} AND like_count > 0
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</update>
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<!-- 增加评论回复数 -->
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<update id="incrementReplyCount">
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UPDATE comment SET reply_count = reply_count + 1
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WHERE comment_id = #{commentId}
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</update>
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<!-- 减少评论回复数 -->
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<update id="decrementReplyCount">
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UPDATE comment SET reply_count = reply_count - 1
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WHERE comment_id = #{commentId} AND reply_count > 0
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</update>
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</mapper> |