ArangoDB高级教程——ArangoDB3.3.19整合Springboot2.1.0

ArangoDB安装见 https://blog.csdn.net/w690333243/article/details/83626273
Springboot使用2.1.0
moven项目中 pom.xml中添加如下配置

<dependency><groupId>com.arangodb</groupId><artifactId>arangodb-spring-boot-starter</artifactId><version>1.0.0</version></dependency>

官方demo spring-data-demo:https://github.com/arangodb/spring-data-demo

Couldn’t find PersistentEntity for type class java.lang.Long!
问题原因：
AccountInfo.java 中定义 Long account;
查询获取最大account.
错误写法

@Query("FOR c IN t_accountinfo COLLECT AGGREGATE maxAccount = MAX(c.account) RETURN {maxAccount}")Long getLatestAccount();

正确写法

@Query("FOR c IN t_accountinfo COLLECT AGGREGATE maxAccount = MAX(c.account) RETURN maxAccount")Long getLatestAccount();

问题所在：
return {maxAccount}返回的是一个json对象，并不是long对象
return maxAccount 返回的是long对象

userinfo，shuoshuo 两个表联合查询：查询表中所有的项，即 a.account,a.name,b.conteng,b.time

  FOR shuoshuo IN t_shuoshuoFOR userinfo IN t_userinfo FILTER shuoshuo.account == userinfo.accountRETURN MERGE(shuoshuo, userinfo)

二、查询说说中所有项，userinfo中两项

FOR shuoshuo IN t_shuoshuo RETURN   { shuoshuo: shuoshuo, userinfo: (FOR userinfo IN t_userinfoFILTER userinfo.account == shuoshuo.accountRETURN {avatarurl:userinfo.avatarurl,nickname:userinfo.nickname})}

排序查询说说

FOR shuoshuo IN t_shuoshuo  SORT shuoshuo._key DESC RETURN   {shuoshuo: shuoshuo,userinfo: (FOR userinfo IN t_userinfoFILTER userinfo.account == shuoshuo.account RETURN {avatarurl:userinfo.avatarurl,nickname:userinfo.nickname,isonline:userinfo.isonline})}

通过id查询说说

FOR shuoshuo IN t_shuoshuo FILTER  shuoshuo._key ==  @idRETURN   {shuoshuo: shuoshuo,userinfo: (FOR userinfo IN t_userinfoFILTER userinfo.account == shuoshuo.account RETURN {avatarurl:userinfo.avatarurl,nickname:userinfo.nickname,isonline:userinfo.isonline})}

查询说说，说说点赞，说说发表人信息

FOR shuoshuocomment IN t_shuoshuocomment FILTER  shuoshuocomment.shuoshuoId == "868629"  SORT shuoshuocomment._key DESC RETURN   {shuoShuoComment: shuoshuocomment,shuoShuoCommentReplyList: (FOR shuoshuocommentreply IN t_shuoshuocommentreply FILTER shuoshuocommentreply.rootCommentId == shuoshuocomment._key RETURN {shuoShuoCommentReply:shuoshuocommentreply,replyUserInfo: ( FOR userinfo IN t_userinfo FILTER userinfo.account == shuoshuocommentreply.account RETURN {avatarurl:userinfo.avatarurl,nickname:userinfo.nickname,isonline:userinfo.isonline} )}),commentUserInfo: ( FOR userinfo IN t_userinfo FILTER userinfo.account == shuoshuocomment.account RETURN {avatarurl:userinfo.avatarurl,nickname:userinfo.nickname,isonline:userinfo.isonline} )}

回复评论计数统计

FOR shuoshuocomment IN t_shuoshuocomment FILTER  shuoshuocomment.shuoshuoId == "868629"  SORT shuoshuocomment._key DESC RETURN   {shuoShuoComment: shuoshuocomment,shuoShuoCommentReplyList: (FOR shuoshuocommentreply IN t_shuoshuocommentreply FILTER shuoshuocommentreply.rootCommentId == shuoshuocomment._key RETURN {shuoShuoCommentReply:shuoshuocommentreply,replyUserInfo: ( FOR userinfo IN t_userinfo FILTER userinfo.account == shuoshuocommentreply.account RETURN {avatarurl:userinfo.avatarurl,nickname:userinfo.nickname,isonline:userinfo.isonline} )}),commentUserInfo: ( FOR userinfo IN t_userinfo FILTER userinfo.account == shuoshuocomment.account RETURN {avatarurl:userinfo.avatarurl,nickname:userinfo.nickname,isonline:userinfo.isonline} ),commentnumber: (FOR shuocomment IN t_shuoshuocommentFILTER shuocomment.shuoshuoId == "868629"COLLECT  WITH COUNT INTO commentnumber RETURN commentnumber) ,
replynumber: (FOR shuoreply IN t_shuoshuocommentreplyFILTER shuoreply.shuoshuoId == "868629"COLLECT  WITH COUNT INTO replynumber RETURN replynumber) }

FOR shuoshuocomment IN t_shuoshuocomment FILTER  shuoshuocomment.shuoshuoId == "868629"  SORT shuoshuocomment._key DESC RETURN   {shuoShuoComment: shuoshuocomment,shuoShuoCommentReplyList: (FOR shuoshuocommentreply IN t_shuoshuocommentreply FILTER shuoshuocommentreply.rootCommentId == shuoshuocomment._key RETURN {shuoShuoCommentReply:shuoshuocommentreply,replyUserInfo: ( FOR userinfo IN t_userinfo FILTER userinfo.account == shuoshuocommentreply.account RETURN {avatarurl:userinfo.avatarurl,nickname:userinfo.nickname,isonline:userinfo.isonline} )}),commentUserInfo: ( FOR userinfo IN t_userinfo FILTER userinfo.account == shuoshuocomment.account RETURN {avatarurl:userinfo.avatarurl,nickname:userinfo.nickname,isonline:userinfo.isonline} ),commentnumber: (FOR shuocomment IN t_shuoshuocommentFILTER shuocomment.shuoshuoId == "868629"COLLECT  WITH COUNT INTO commentnumber RETURN commentnumber) ,
replynumber: (FOR shuoreply IN t_shuoshuocommentreplyFILTER shuoreply.shuoshuoId == "868629"COLLECT  WITH COUNT INTO replynumber RETURN replynumber) }

评论回复点赞，点赞计数

FOR shuoshuocomment IN t_shuoshuocomment FILTER  shuoshuocomment.shuoshuoId == "2554321"  SORT shuoshuocomment.date DESC RETURN   {shuoShuoComment: shuoshuocomment, shuoShuoCommentReplyList: (FOR shuoshuocommentreply IN t_shuoshuocommentreply FILTER shuoshuocommentreply.rootCommentId == shuoshuocomment._key RETURN {shuoShuoCommentReply:shuoshuocommentreply,
likenumber: (FOR shuocommentreplylike IN t_shuoshuocommentlikeFILTER shuocommentreplylike.commentId ==  shuoshuocommentreply._keyCOLLECT  WITH COUNT INTO likenumber RETURN likenumber), ismyliked: (FOR shuocommentreplylike IN t_shuoshuocommentlikeFILTER shuocommentreplylike.commentId == shuoshuocommentreply._key AND shuocommentreplylike.account =="10004"COLLECT  WITH COUNT INTO ismyliked RETURN ismyliked) ,replyUserInfo: ( FOR userinfo IN t_userinfo FILTER userinfo.account == shuoshuocommentreply.account RETURN {avatarurl:userinfo.avatarurl,nickname:userinfo.nickname,isonline:userinfo.isonline} )}),commentUserInfo: ( FOR userinfo IN t_userinfo FILTER userinfo.account == shuoshuocomment.account RETURN {avatarurl:userinfo.avatarurl,nickname:userinfo.nickname,isonline:userinfo.isonline} ),likenumber: (FOR shuocommentlike IN t_shuoshuocommentlikeFILTER shuocommentlike.commentId ==  shuoshuocomment._keyCOLLECT  WITH COUNT INTO likenumber RETURN likenumber), ismyliked: (FOR shuocommentlike IN t_shuoshuocommentlikeFILTER shuocommentlike.commentId == shuoshuocomment._key AND shuocommentlike.account == "10004"COLLECT  WITH COUNT INTO ismyliked RETURN ismyliked) }

更新于2018年12月4日 23:49
https://www.arangodb.com/arangodb-training-center/search/

更新于2018年11月18日
https://docs.arangodb.com/devel/AQL/Operations/Collect.html
https://www.arangodb.com/tutorials/mongodb-to-arangodb-tutorial/
https://www.arangodb.com/arangodb-training-center/search/
https://www.arangodb.com/documentation/
https://www.arangodb.com/why-arangodb/arangodb-vs-neo4j/
https://www.arangodb.com/arangodb-training-center/tutorials-aql-query-profiling/

https://blog.csdn.net/l1028386804/article/details/72801492 nginx+keepalived搭建高可用负载均衡
https://blog.csdn.net/qq_34021712/article/details/73441168 nginx+keepalived搭建高可用负载均衡
https://www.daimafans.com/article/d4807910888570880-p1-o1.html ArangoDB 入门指南：查询数据库
https://blog.csdn.net/yuzongtao/article/details/75968752?utm_source=blogxgwz2 ArangoDB高级操作
https://blog.csdn.net/tuntunwang/article/details/78893712 推荐系统实践—第六章：利用社交网络数据
https://cloud.tencent.com/developer/ask/65232/answer/111071
更新于2018年12月09日 0：10 周日凌晨
周四晚上，工作发生变动，记住，努力，就是为了有一天，无论发生任何事，都可以无所畏惧
更新于2019年5月2日星期四 17：21 五一放假的第二天，来公司处理问题 sdy

https://www.cnblogs.com/litufu/articles/9650884.html ArangoDB 学习笔记（2）数据模型
https://www.cnblogs.com/litufu/articles/9645300.html ArangoDB 学习笔记（1）入门篇
https://www.cnblogs.com/litufu/articles/9651068.html ArangoDB 学习笔记（3）命名规范
https://www.arangodb.com/tutorials/cn-tutorial-sync-java-driver/

今天遇到一个问题，插入数据时总是报冲突:

arangodb  idx_  over conflict

之前这样写的实体类：

@Document("t_user")
@HashIndex(fields = { "account" }, unique = true)
public class AccountInfo implements Serializable {

后来改成了这样的(改之前已经有t_user表了，表信息的索引已经生成了，改后没有删除原来的数据表，导致有问题，删除表，从新生成表解决问题)

@Document("t_user")
@HashIndex(fields = { "userId" }, unique = true)
@HashIndex(fields = { "telephone" }, unique = true)
public class AccountInfo implements Serializable {

情景：刚开始设置了account为索引，并且是唯一索引。后来改掉了account为userId,但是改后数据表还在，改后插入数据时一直报索引冲突，over之类的，后来删除表，重新生成表，就没问题了
https://blog.csdn.net/zaishijizhidian/article/details/91969864
更新于2020年11月22日22:04 ylxy3eefzt

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