Toys-A
05988c4325
- Replace hardcoded public namespace with NACOS_NAMESPACE - Document nacos init container troubleshooting for 1Panel deploy
73 lines
2.6 KiB
XML
73 lines
2.6 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.nuaa.video.recommend.mapper.RecommendUserBehaviorMapper">
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<!-- 获取用户行为记录的视频ID列表 -->
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<select id="selectUserBehaviorVideoIds" resultType="java.lang.Long">
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SELECT DISTINCT video_id
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FROM recommend_user_behavior
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WHERE user_id = #{userId}
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<if test="behaviorTypes != null and behaviorTypes.size > 0">
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AND behavior_type IN
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<foreach collection="behaviorTypes" item="type" open="(" separator="," close=")">
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#{type}
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</foreach>
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</if>
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ORDER BY create_time DESC
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LIMIT #{limit}
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</select>
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<!-- 统计用户分类行为数量 -->
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<select id="countUserCategoryBehaviors" resultType="java.util.Map">
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SELECT c.category_id as categoryId, COUNT(1) as count
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FROM recommend_user_behavior b
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JOIN video_content.content_video v ON b.video_id = v.id
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JOIN video_content.content_category c ON v.category_id = c.id
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WHERE b.user_id = #{userId}
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<if test="startTime != null">
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AND b.create_time >= #{startTime}
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</if>
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GROUP BY c.category_id
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</select>
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<!-- 统计用户标签行为数量 -->
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<select id="countUserTagBehaviors" resultType="java.util.Map">
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SELECT vt.tag_id as tagId, COUNT(1) as count
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FROM recommend_user_behavior b
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JOIN video_content.content_video_tag vt ON b.video_id = vt.video_id
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WHERE b.user_id = #{userId}
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<if test="startTime != null">
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AND b.create_time >= #{startTime}
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</if>
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GROUP BY vt.tag_id
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</select>
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<!-- 获取热门视频 -->
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<select id="selectHotVideos" resultType="java.util.Map">
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SELECT
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video_id as videoId,
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SUM(
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CASE
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<foreach collection="weights" index="behaviorType" item="weight">
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WHEN behavior_type = #{behaviorType} THEN behavior_weight * #{weight}
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</foreach>
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ELSE behavior_weight
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END
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) as score
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FROM recommend_user_behavior
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WHERE 1 = 1
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<if test="startTime != null">
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AND create_time >= #{startTime}
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</if>
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<if test="behaviorTypes != null and behaviorTypes.size > 0">
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AND behavior_type IN
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<foreach collection="behaviorTypes" item="type" open="(" separator="," close=")">
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#{type}
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</foreach>
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</if>
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GROUP BY video_id
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ORDER BY score DESC
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LIMIT #{limit}
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</select>
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</mapper>
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