blog-backEnd/src/main/resources/mapper/articleMapper.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="cn.celess.blog.mapper.ArticleMapper">
    <resultMap id="articleResultMap" type="cn.celess.blog.entity.Article">
        <id column="a_id" property="id"/>
        <result column="a_title" property="title"/>
        <result column="a_summary" property="summary"/>
        <result column="a_md_content" property="mdContent"/>
        <result column="a_tags_id" property="tagsId"/>
        <result column="a_category_id" property="categoryId"/>
        <result column="a_url" property="url"/>
        <result column="a_author_id" property="authorId"/>
        <result column="a_is_open" property="open"/>
        <result column="a_is_original" property="type"/>
        <result column="next_a_id" property="nextArticleId"/>
        <result column="pre_a_id" property="preArticleId"/>
        <result column="a_reading_number" property="readingNumber"/>
        <result column="a_publish_date" property="publishDate"/>
        <result column="a_update_date" property="updateDate"/>
    </resultMap>

    <insert id="insert" parameterType="cn.celess.blog.entity.Article">
        insert into article (a_author_id, a_category_id, a_tags_id, a_md_content, a_publish_date,
                             a_summary, a_title, a_url)
        values (#{authorId}, #{categoryId}, #{tagsId}, #{mdContent}, #{publishDate},
                #{summary}, #{title}, #{url})
        <selectKey resultType="java.lang.Long" keyProperty="id">
            SELECT LAST_INSERT_ID() AS id
        </selectKey>
    </insert>
    <delete id="delete">
        delete
        from article
        where a_id = #{id}
    </delete>

    <update id="update">
        update article
        set
        <if test="title!=null">a_title=#{title},</if>
        <if test="mdContent!=null">a_md_content=#{mdContent},</if>
        <if test="summary!=null">a_summary=#{summary},</if>
        <if test="type!=null">a_is_original=#{type},</if>
        <if test="url!=null">a_url=#{url},</if>
        <if test="updateDate!=null">a_update_date=#{updateDate},</if>
        <if test="categoryId!=null">a_category_id=#{categoryId},</if>
        <if test="tagsId!=null">a_tags_id=#{tagsId},</if>
        <if test="nextArticleId!=null">next_a_id=#{nextArticleId},</if>
        <if test="preArticleId!=null">pre_a_id=#{preArticleId},</if>
        <if test="open!=null">a_is_open=#{open}</if>
        where a_id = #{id}
    </update>

    <update id="updateNextArticleId">
        update article
        set next_a_id=#{nextArticleID}
        where a_id = #{targetArticleID}
    </update>

    <update id="updatePreArticleId">
        update article
        set pre_a_id=#{preArticleID}
        where a_id = #{targetArticleID}
    </update>
    <update id="setReadingNumber">
        update article
        set a_reading_number=#{number}
        where a_id = #{id}
    </update>

    <select id="getLastestArticleId" resultType="long">
        select a_id
        from article
        order by a_id desc
        limit 1
    </select>

    <select id="getLastestArticle" resultMap="articleResultMap" resultType="cn.celess.blog.entity.Article">
        select *
        from article
        order by a_id desc
        limit 1
    </select>


    <select id="findArticleById" resultMap="articleResultMap">
        select *
        from article
        where a_id = #{id}
    </select>

    <select id="existsByTitle" resultType="boolean">
        SELECT EXISTS(SELECT * FROM article WHERE a_title = #{title})
    </select>

    <select id="existsById" resultType="boolean">
        SELECT EXISTS(SELECT * FROM article WHERE a_id = #{id})
    </select>

    <select id="findAllByAuthorId" resultMap="articleResultMap">
        select *
        from article
        where a_author_id = #{authorID}
        order by a_id desc
    </select>

    <select id="findAllByOpen" resultMap="articleResultMap">
        select *
        from article
        where a_is_open = #{isOpen}
        order by a_id desc
    </select>


    <select id="getTitleById" resultType="string">
        SELECT a_title
        from article
        where a_id = #{id}
    </select>

    <select id="findAllByCategoryId" resultMap="articleResultMap">
        select a_id, a_title, a_summary
        from article
        where a_category_id = #{id}
        order by a_id desc
    </select>

    <select id="findAll" resultMap="articleResultMap">
        select *
        from article
        order by a_id desc
    </select>

    <select id="getSimpleInfo" resultMap="articleResultMap">
        select a_id, a_summary, a_title
        from article
        where a_id = #{id}
    </select>

    <select id="getSimpleInfoByCategory" resultMap="articleResultMap">
        select a_id, a_summary, a_title
        from article
        where a_category_id = #{categoryId}
        order by a_id desc
    </select>

    <select id="getSimpleInfoByTag" resultMap="articleResultMap">
        Select
        a_id, a_summary, a_title
        from article where a_id in
        <foreach item="item" index="index" collection="list" open="(" separator="," close=")">
            #{item}
        </foreach>
        order by a_id desc
    </select>


    <select id="count" resultType="long">
        select count(*)
        from article;
    </select>

</mapper>