JOLT 将多个平面数组转换为单个嵌套数组

Question

我似乎无法弄清楚 JOLT 到了令人沮丧的地步..

我可以毫无问题地将所有值放入单个嵌套数组中，但是我无法将值添加到输出的根。

数据：

[ {
  "Q" : "10",
  "W" : "0.5",
  "O" : "Oregon",
  "Status" : "Valid",
  "Type" : "SSD",
  "Number" : "Samsung1234",
  "Total" : "50",
  "Category" : "Drive"
},
{
  "Q" : "15",
  "W" : "0.5",
  "O" : "Seattle",
  "Status" : "Valid",
  "Type" : "SSD",
  "Number" : "PNY1234",
  "Total" : "100",
  "Category" : "Drive"
}
...
]

当前规格：

[{
    "operation": "shift",
    "spec": {
           "*": "data.drives"
    }
}]

这给了我以下结构：

{
  "data" : {
    "drives" : [ {
      "Q" : "10",
      "W" : "0.5",
      "O" : "Oregon",
      "Status" : "Valid",
      "Type" : "SSD",
      "Number" : "Samsung1234",
      "Total" : "50",
      "Category" : "Drive"
    },
    {
      "Q" : "15",
      "W" : "0.5",
      "O" : "Seattle",
      "Status" : "Valid",
      "Type" : "SSD",
      "Number" : "Samsung1234",
      "Total" : "100",
      "Category" : "Drive"
   }
  }]
...
}

我需要的是：

{
  "data" : {
    "Number" : "Samsung1234",
    "Category" : "Drive",
    "Type" : "SSD",
    "drives" : [ {
        "Q" : "10",
        "W" : "0.5",
        "O" : "Oregon",
        "Status" : "Valid",
        "Total" : "50"
    },
    {
        "Q" : "15",
        "W" : "0.5",
        "O" : "Seattle",
        "Status" : "Valid",
        "Total" : "100"
   }
  }]
...
}

非常感谢任何帮助。颠簸对我来说仍然是一个谜，我只是无法理解它..

Answer 1

如果目标是仅获取第一个

Number

、

Category

和

Type

值，则可以使用以下转换：

[
  {
    "operation": "shift",
    "spec": {
      "*": {
        "Number|Category|Type": "data.&",
        "*": "data.drives[&1].&" // all other attributes
      }
    }
  },
  {
    "operation": "cardinality",
    "spec": {
      "*": {
        "drives": "MANY", // keep this array as it is
        "*": "ONE" // bring only the first components 
                   // of the arrays respectively
      }
    }
  }
]