Question

此CSV已创建ETL并将其导入OrientDB：

userlist.csv

ID,NAME
1,SATOSHI
2,TONA
3,MIKI
4,YUJI
5,OTA

但是，我不知道如何制作导入此CSV的ETL。

relation.csv

FROM_ID,TO_ID,WEIGHT
1,2,4
1,3,4
1,5,3
2,5,3
2,3,5
...

FROM_ID和TO_ID表示ID的{{1}}。 userlist.csv是可选的。

请教我如何正确编写ETL。

Answer 1

试试这个：

    {
  "source" : {
    "file": { "path": "your_path/relation.csv" }
  },
  "extractor" : {
    "csv": {}
  },
   "transformers": [
        { "command": { "command": "CREATE EDGE E FROM (SELECT FROM userlist-class where id = ${input.FROM_ID}) TO (SELECT FROM userlist-class where id = ${input.TO_ID}) set weight=${input.WEIGHT}"} }
    ],
  "loader" : {
    "orientdb": {
      "dbURL": "plocal:your-path/databases/db-name",
      "dbUser": "your-user",
      "dbPassword": "your-pwd",
      "serverUser": "your-server-user",
      "serverPassword": "your-server-pwd",
      "dbType": "graph",
      "classes": [{"name": "userlist-class-name", "extends":"V"}]
    }
  }
}

<强>更新

{
  "source" : {
    "file": { "path": "C:/Users/Sorint.Lab/Desktop/Orient/Community/orientdb-community-2.2.24/config/relation.csv" }
  },
  "extractor" : {
    "csv": {}
  },
   "transformers": [
        { "command": { "command": "CREATE EDGE USER_RELATION_FRIEND FROM (SELECT FROM userList where id = ${input.FROM_ID}) TO (SELECT FROM userList where id = ${input.TO_ID}) set weight=${input.WEIGHT}"} }
    ],
  "loader" : {
    "orientdb": {
      "dbURL": "plocal:C:/Users/Sorint.Lab/Desktop/Orient/Community/orientdb-community-2.2.24/databases/stack45504136",
      "dbUser": "admin",
      "dbPassword": "admin",
      "serverUser": "root",
      "serverPassword": "root",
      "dbType": "graph",
      "classes": [
            {"name": "userList", "extends":"V"},
            {"name": "USER_RELATION_FRIEND", "extends":"E"}
            ]
    }
  }
}

希望有所帮助

此致

OrientDB从CSV文件导入到图形 - ETL

1 个答案: