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<?xml version="1.0" encoding="UTF-8" ?>
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<!DOCTYPE mapper
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PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
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"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
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<mapper namespace="com.forum.dao.ForumDao">
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<resultMap id="forum" type="Forum">
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<id property="id" column="id"/>
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<result property="title" column="title"/>
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<result property="content" column="content"/>
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<result property="flag" column="flag"/>
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<result property="views" column="views"/>
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<result property="updateTime" column="update_time"/>
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<result property="avatars" column="avatars"/>
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<result property="commentabled" column="commentabled"/>
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<result property="description" column="description"/>
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<result property="createTime" column="create_time"/>
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<result property="userId" column="user_id"/>
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<result property="like" column="like"/>
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<result property="tagIds" column="tag_ids"/>
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<association property="user" javaType="User">
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<id property="id" column="uid"/>
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<result property="nickname" column="nickname"/>
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<result property="username" column="username"/>
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<result property="email" column="email"/>
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<result property="avatar" column="avatar"/>
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</association>
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<collection property="tags" ofType="Tag">
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<id property="id" column="tagid"/>
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<result property="name" column="tagname"/>
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</collection>
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<!-- <collection property="tagsId" ofType="tagIds">-->
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<!-- <result property="tag_id" column="tag_id"/>-->
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<!-- </collection>-->
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</resultMap>
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<resultMap id="ForumAndIds" type="forum">
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<id property="id" column="id"/>
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<result property="title" column="title"/>
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<result property="updateTime" column="update_time"/>
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<!-- <collection property="tagsId" ofType="tagIds">-->
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<!-- <result property="tag_id" column="tag_id"/>-->
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<!-- </collection>-->
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</resultMap>
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<delete id="deleteForum">
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delete from forum where id = #{id}
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</delete>
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<select id="getIndexForum" resultMap="forum"> /*主页帖子展示*/
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select b.id, b.title, b.avatars,b.flag, b.views, b.create_time, b.description,b.like,
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a.username, a.avatar
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from forum b,user a
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where a.id = b.user_id order by b.create_time desc
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</select>
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<select id="getForumTadIds" resultMap="forum"> /*主页帖子展示*/
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select b.id, b.title, b.avatars, b.views, b.update_time, b.description,b.like,
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a.username, a.avatar,
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bt.tag_id
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from user a,forum b
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left join forum_tags bt on b.id=bt.forum_id
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where a.id = b.user_id
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-- order by b.update_time desc
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-- 0.0.
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-- 0
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</select>
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<select id="getAllForum" resultMap="forum"> /*后台帖子展示*/
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select b.id, b.title, b.create_time, b.commentabled
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from forum b order by b.create_time desc
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</select>
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<select id="getByTagId" resultMap="forum">
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select b.id, b.title,b.flag, b.avatars, b.views, b.update_time, b.description,
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t1.name tagname, t1.id tagid,
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a.username, a.avatar
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from forum b, user a, forum_tags tb, tag t1
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where a.id = b.user_id and tb.forum_id = b.id and tb.tag_id = t1.id and t1.id = #{tagId}
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order by b.update_time desc
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</select>
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<select id="getForum" resultMap="forum"> /*后台展示帖子*/
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select b.id, b.flag, b.title, b.content,
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b.tag_ids, b.avatars, b.description, b.commentabled
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from forum b where b.id = #{id};
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</select>
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<select id="getDetailedForum" resultMap="forum"> /*帖子详情*/
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select b.id, b.avatars, b.flag, b.title, b.content, b.views,
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b.commentabled,b.like,a.username, a.avatar,tag.id tagid, tag.name tagname
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from forum b, user a, tag tag, forum_tags tb
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where b.user_id = a.id and tb.forum_id = b.id and tb.tag_id = tag.id and b.id = #{id}
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</select>
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<select id="getSearchForum" resultMap="forum">
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<bind name="pattern" value="'%' + query + '%'"/>
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select b.id, b.title, b.avatars, b.views, b.create_time, b.description,b.like,
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a.username, a.avatar
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from forum b, user a
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where a.id = b.user_id and (b.title like #{pattern} or b.content like #{pattern})
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order by b.create_time desc
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</select>
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<select id="searchAllForum" parameterType="Forum" resultMap="forum">
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<bind name="pattern" value="'%' + title + '%'"/>
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/*模糊查询*/
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select b.id, b.title, b.update_time, b.published, t.id, t.name
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from forum b where b.title like #{pattern}
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</select>
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<update id="updateForum" parameterType="Forum">
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update forum set flag = #{flag} ,
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title = #{title}, content = #{content}, tag_ids = #{tagIds},
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avatars = #{avatars} , description = #{description} ,
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commentabled = #{commentabled} ,update_time = #{updateTime} where id = #{id};
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</update>
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<update id="updateView">
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update forum b set b.views=b.views+1 where id=#{id};
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</update>
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<!--useGeneratedKeys="true"；使用自增主键获取主键值策略
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keyProperty；指定对应的主键属性，也就是mybatis获取到主键值以后，将这个值封装给javaBean的哪个属性
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-->
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<insert id="saveForum" parameterType="Forum" useGeneratedKeys="true" keyProperty="id">
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insert into forum (title, content, avatars, flag,
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views, commentabled, create_time, update_time, tag_ids, user_id, description)
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values (#{title}, #{content}, #{avatars}, #{flag}, #{views}, #{commentabled}, #{createTime},
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#{updateTime}, #{tagIds}, #{userId}, #{description});
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</insert>
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<insert id="saveForumAndTag" parameterType="ForumAndTag">
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insert into forum_tags (tag_id, forum_id) values (#{tagId},#{forumId});
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</insert>
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<select id="findGroupYear" resultType="String">
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select DATE_FORMAT(b.updateTime, '%Y') from forum b
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</select>
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<!-- 查找所有月份月份-->
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<select id="findGroupMonth" resultType="String">
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select DATE_FORMAT(b.update_time, '%M') from forum b order by b.update_time desc
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</select>
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<!-- 把所有文章下的标签id查询出来-->
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<select id="findForumAndTagsByYear" resultMap="ForumAndIds">
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select b.title, b.id,b.update_time,
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bt.tag_id
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from forum b
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left join forum_tags bt on b.id=bt.forum_id
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where DATE_FORMAT(b.update_time, "%Y") = #{year} order by b.update_time desc;
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</select>
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<!-- 按年份+月份查找-->
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<select id="findByMonth" resultMap="forum">
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select b.title, b.update_time, b.id, b.flag
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from forum b
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where DATE_FORMAT(b.update_time, "%Y%M") = #{month}
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</select>
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<!--最热推荐-->
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<select id="findForumByRank" resultType="rankForum">
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select b.title,b.id from forum b order by b.views desc limit 0,3
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</select>
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<!--最新推荐-->
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<select id="getNewForum" resultType="rankForum">
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select b.title,b.id from forum b order by b.create_time desc limit 0,3
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</select>
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<select id="getLike" resultType="Long">
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select b.like from forum b where b.id=#{id}
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</select>
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<update id="addLike" >
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update forum b set b.like=b.like+1 where b.id=#{id}
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</update>
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<select id="countView" resultType="java.lang.Integer">
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select count(views) from forum
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</select>
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<delete id="cancelLike">
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update forum b set b.like=b.like-1 where b.id=#{forumId}
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</delete>
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</mapper>
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