Question

我正在使用OrientDB ETL模块将数据从CSV文件导入图形数据库。 CSV文件的格式如下：

urlid_1,urlid_2,score
a,b,10
a,c,20
a,d,30
b,a,40
b,c,50
b,d,60
c,a,70
c,b,80
c,d,90
d,a,100
d,b,110
d,c,120

我希望将其导入orientdb后，a，b，c和d中的每一个都会在类中保存为顶点并创建边缘从urlid_1开始到urlid_2，边缘权重为csv文件中相应的score。

任何人都可以帮我处理ETL的配置（JSON）文件吗？

我已尝试过此处建议的解决方案：Easiest way to import a simple csv file to a graph with OrientDB ETL但未获得预期结果。

Answer 1

试试这个：

导入数据：

<强> data_2.csv

id
a
b
c
d

<强> import_2.json

{
  "source" : {
    "file": { "path": "data_2.csv" }
  },
  "extractor" : {
    "csv": {}
  },
   "transformers": [
        { "vertex": { "class": "Test" } }
    ],
  "loader" : {
    "orientdb": {
      "dbURL": "plocal:your_path",
      "dbUser": "your_user",
      "dbPassword": "your_pwd",
      "serverUser": "your_user",
      "serverPassword": "your_pwd",
      "dbType": "graph",
      "classes": [
            {"name": "Test", "extends":"V"},
            ]
    }
  }
}

创建边缘：

<强> data.csv

urlid_1,urlid_2,score
a,b,10
a,c,20
a,d,30
b,a,40
b,c,50
b,d,60
c,a,70
c,b,80
c,d,90
d,a,100
d,b,110
d,c,120

<强> import.json

{
  "source" : {
    "file": { "path": "data.csv" }
  },
  "extractor" : {
    "csv": {}
  },
   "transformers": [
        { "command":
            { "command": "CREATE EDGE link FROM (SELECT FROM Test where id= "${input.urlid_1}") TO (SELECT FROM Test where id = "${input.urlid_2}") set score=${input.score}"}  
        }
    ],
  "loader" : {
    "orientdb": {
      "dbURL": "plocal:your_path",
      "dbUser": "your_user",
      "dbPassword": "your_pwd",
      "serverUser": "your_user",
      "serverPassword": "your_pwd",
      "dbType": "graph",
      "classes": [
            {"name": "link", "extends":"E"}
            ]
    }
  }
}

希望有所帮助

此致

带有加权边的OrientL

1 个答案: