将块平面阵列摇晃成两对

Question

我正在尝试将两个成对分组到一个平面列表中，请注意成对的数量可以是可变的（例如 0、2、4、6 等等）。

见意input/output。

输入：

{
  "coordinates": [
    1.1,
    5.1,
    1.2,
    5.3,
    1.3,
    5.5
  ]
}

输出：

{
  "coordinates": [
    [1.1, 5.1],
    [1.2, 5.3],
    [1.3, 5.5],  
  ]
}

这是否可以使用 Jolt 转换轻松实现？

Answer 1

是的，你可以通过使用连续的转换来实现它，比如

[
 //index each values seperately
  {
    "operation": "shift",
    "spec": {
      "*": {
        "*": "&1.&"
      }
    }
  },
 // convert values to string type so as to prevent the issue of truncation of decimal parts of those values
  {
    "operation": "modify-overwrite-beta",
    "spec": {
      "*": {
        "*": "=toString(@(1,&))"
      }
    }
  },
 // exchange key-value pairs
  {
    "operation": "shift",
    "spec": {
      "*": {
        "*": {
          "$": "&2.@(0)"
        }
      }
    }
  },
  {
 // increment the values by 1 in order to prepare them for modular arithetic logic held in the following steps
    "operation": "modify-overwrite-beta",
    "spec": {
      "*": {
        "*": "=intSum(@(1,&),1)"
      }
    }
  },
  {
 // pairs means to have two components, then need to divide the values by 2 along with rounding to the nearest grater integer
    "operation": "modify-overwrite-beta",
    "spec": {
      "*": {
        "*": "=divideAndRound(0,@(1,&),2)"
      }
    }
  },
  {
  // exchange key-value pairs back while keeping the name of the object("coordinates")
    "operation": "shift",
    "spec": {
      "*": {
        "*": {
          "$": "&2.@(0)"
        }
      }
    }
  },
  {
 // dissipate each component of the list to their proper place
    "operation": "shift",
    "spec": {
      "*": {
        "*": "&1[]"
      }
    }
  }
]

将块平面阵列摇晃成两对

Jolt transformation chunk flat array into pairs of two

jolt