ai-course/app/api/playedu-exam/src/main/resources/mapper/ExamQuestionMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="xyz.playedu.exam.mapper.ExamQuestionMapper">

    <resultMap id="BaseResultMap" type="xyz.playedu.exam.domain.ExamQuestion">
            <id property="id" column="id" jdbcType="INTEGER"/>
            <result property="categoryId" column="category_id" jdbcType="INTEGER"/>
            <result property="adminId" column="admin_id" jdbcType="INTEGER"/>
            <result property="type" column="type" jdbcType="INTEGER"/>
            <result property="level" column="level" jdbcType="TINYINT"/>
            <result property="content" column="content" jdbcType="VARCHAR"/>
            <result property="createdAt" column="created_at" jdbcType="TIMESTAMP"/>
            <result property="updatedAt" column="updated_at" jdbcType="TIMESTAMP"/>
            <result property="deleted" column="deleted" jdbcType="TINYINT"/>
    </resultMap>

    <sql id="Base_Column_List">
        id,category_id,admin_id,type,
        level,content,created_at,
        updated_at,deleted
    </sql>

    <select id="paginate" resultType="xyz.playedu.exam.domain.ExamQuestion">
        SELECT `exam_question`.*
        FROM `exam_question`
        <where>
            <if test="adminIds != null and !adminIds.isEmpty()">
                AND `exam_question`.`admin_id` IN (<foreach collection="adminIds" item="tmpId" separator=",">
                #{tmpId}</foreach>)
            </if>
            <if test="categoryId != null and categoryId != ''">
                AND `exam_question`.`category_id` IN (#{categoryId})
            </if>
            <if test="content != null and content != ''">
                AND `exam_question`.`content` LIKE concat('%',#{content},'%')
            </if>
            <if test="type != null">
                AND `exam_question`.`type` = #{type}
            </if>
            <if test="level != null">
                AND `exam_question`.`level` = #{level}
            </if>
        </where>

        <if test="sortAlgo == 'asc'">
            <choose>
                <when test="sortField == 'created_at'">
                    ORDER BY `exam_question`.`created_at` ASC
                </when>
                <otherwise>
                    ORDER BY `exam_question`.`id` ASC
                </otherwise>
            </choose>
        </if>
        <if test="sortAlgo != 'asc'">
            <choose>
                <when test="sortField == 'created_at'">
                    ORDER BY `exam_question`.`created_at` DESC
                </when>
                <otherwise>
                    ORDER BY `exam_question`.`id` DESC
                </otherwise>
            </choose>
        </if>
        LIMIT #{pageStart}, #{pageSize};
    </select>

    <select id="paginateCount" resultType="java.lang.Long">
        SELECT count(1)
        FROM `exam_question`
        <where>
            <if test="adminIds != null and !adminIds.isEmpty()">
                AND `exam_question`.`admin_id` IN (<foreach collection="adminIds" item="tmpId" separator=",">
                #{tmpId}</foreach>)
            </if>
            <if test="categoryId != null and categoryId != ''">
                AND `exam_question`.`category_id` IN (#{categoryId})
            </if>
            <if test="content != null and content != ''">
                AND `exam_question`.`content` LIKE concat('%',#{content},'%')
            </if>
            <if test="type != null">
                AND `exam_question`.`type` = #{type}
            </if>
            <if test="level != null">
                AND `exam_question`.`level` = #{level}
            </if>
        </where>
    </select>

    <select id="chunksByCategoryIdAndLimit" resultType="xyz.playedu.exam.domain.ExamQuestion">
        (SELECT `exam_question`.* FROM `exam_question`
        <where>
            and `exam_question`.`type` = 1
            <if test="categoryIds != null">
                and `exam_question`.`category_id` IN
                <foreach collection="categoryIds" item="categoryId" open="(" separator="," close=")">
                    #{categoryId}
                </foreach>
            </if>
        </where>
        ORDER BY RAND()
        LIMIT #{type1Number})

        UNION ALL

        (SELECT `exam_question`.* FROM `exam_question`
        <where>
            and `exam_question`.`type` = 2
            <if test="categoryIds != null">
                and `exam_question`.`category_id` IN
                <foreach collection="categoryIds" item="categoryId" open="(" separator="," close=")">
                    #{categoryId}
                </foreach>
            </if>
        </where>
        ORDER BY RAND()
        LIMIT #{type2Number})

        UNION ALL

        (SELECT `exam_question`.* FROM `exam_question`
        <where>
            and `exam_question`.`type` = 3
            <if test="categoryIds != null">
                and `exam_question`.`category_id` IN
                <foreach collection="categoryIds" item="categoryId" open="(" separator="," close=")">
                    #{categoryId}
                </foreach>
            </if>
        </where>
        ORDER BY RAND()
        LIMIT #{type3Number})

        UNION ALL

        (SELECT `exam_question`.* FROM `exam_question`
        <where>
            and `exam_question`.`type` = 4
            <if test="categoryIds != null">
                and `exam_question`.`category_id` IN
                <foreach collection="categoryIds" item="categoryId" open="(" separator="," close=")">
                    #{categoryId}
                </foreach>
            </if>
        </where>
        ORDER BY RAND()
        LIMIT #{type4Number})

        UNION ALL

        (SELECT `exam_question`.* FROM `exam_question`
        <where>
            and `exam_question`.`type` = 5
            <if test="categoryIds != null">
                and `exam_question`.`category_id` IN
                <foreach collection="categoryIds" item="categoryId" open="(" separator="," close=")">
                    #{categoryId}
                </foreach>
            </if>
        </where>
        ORDER BY RAND()
        LIMIT #{type5Number})

        UNION ALL

        (SELECT `exam_question`.* FROM `exam_question`
        <where>
            and `exam_question`.`type` = 6
            <if test="categoryIds != null">
                and `exam_question`.`category_id` IN
                <foreach collection="categoryIds" item="categoryId" open="(" separator="," close=")">
                    #{categoryId}
                </foreach>
            </if>
        </where>
        ORDER BY RAND()
        LIMIT #{type6Number})
    </select>
</mapper>