Question 109664 in Json Question posted in
Our archive of expertly curated questions and answers provides insights and solutions to common problems related to this popular data interchange format. From parsing and manipulating JSON data to integrating it with various programming languages and web services, our archive has got you covered. Start exploring today and take your JSON skills to the next level

Json – Duplicate keys from the first entry, wrapping the rest of the keys into values

I’m newbie in jolt and I trying to transform the following JSON

Headers can be different in different json.

I really need a spec based on special characters like *,@,&,$

I’ll be eternally grateful for your help!

Input JSON :

[
  {
    "header1": null,
    "header2": null,
    "header3": null
  },
  {
    "value1": null,
    "value2": null,
    "value3": null
  },
  {
    "value4": null,
    "value5": null,
    "value6": null
  }
]

Expected Output :

[
  {
    "header1": "value1",
    "header2": "value2",
    "header3": "value3"
  },
  {
    "header1": "value4",
    "header2": "value5",
    "header3": "value6"
  }
]
Tags:

2

Answers


  1. 0

    You can use the following shift transformation spec

    [
  {// separate the first object which has the headers
    "operation": "shift",
    "spec": {
      "0": {
        "*": {
          "$": "h"
        }
      },
      "*": {
        "*": {
          "$": "v&2"
        }
      }
    }
  },
  {// match "headers" against "values" while reforming new nodes to hold each key-value pair group within different objects
    "operation": "shift",
    "spec": {
      "v*": {
        "*": {
          "*": {
            "@1": "&3.&2.@(4,h[&2])"
          }
        }
      }
    }
  },
  {// get rid of object keys
    "operation": "shift",
    "spec": {
      "*": {
        "*": {
          "*": "[#3].&"
        }
      }
    }
  }
]

    the demo on the site http://jolt-demo.appspot.com/ is

    enter image description here

    Login or Signup to reply.
  2. 0

    You can solve this problem with 2 shift operations like the below:

    [
  {
    "operation": "shift",
    "spec": {
      "0": {
        "*": {
          "$": "header"
        }
      },
      "*": "data"
    }
  },
  {
    "operation": "shift",
    "spec": {
      "data": {
        "*": {
          "*": {
            "$": "[&2].@(4,header[#2])"
          }
        }
      }
    }
  }
]
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search