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sb-backend/src/main/resources/mapper/CommentMapper.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"https://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.sb.web.board.mapper.CommentMapper">
<resultMap id="commentResultMap" type="com.sb.web.board.domain.Comment">
<id property="id" column="id"/>
<result property="postId" column="post_id"/>
<result property="authorId" column="author_id"/>
<result property="authorName" column="author_name"/>
<result property="content" column="content"/>
<result property="createdAt" column="created_at"/>
</resultMap>
<select id="findByPostId" parameterType="long" resultMap="commentResultMap">
SELECT id, post_id, author_id, author_name, content, created_at
FROM comment
WHERE post_id = #{postId}
ORDER BY id ASC
</select>
<select id="findById" parameterType="long" resultMap="commentResultMap">
SELECT id, post_id, author_id, author_name, content, created_at
FROM comment
WHERE id = #{id}
</select>
<insert id="insert" parameterType="com.sb.web.board.domain.Comment"
useGeneratedKeys="true" keyProperty="id">
INSERT INTO comment (post_id, author_id, author_name, content, created_at)
VALUES (#{postId}, #{authorId}, #{authorName}, #{content}, NOW())
</insert>
<delete id="delete" parameterType="long">
DELETE FROM comment WHERE id = #{id}
</delete>
<delete id="deleteByPostId" parameterType="long">
DELETE FROM comment WHERE post_id = #{postId}
</delete>
</mapper>