Rename fields in nested arrays using JOLT transformation

Question

I want to rename fields in an array nested in an another array using JOLT transformation library. 1. One field to rename is a top level field in an array 2. Two fields to r

Answer 1

Spec

[
  {
    "operation": "shift",
    "spec": {
      "country": "country",
      "state": {
        "*": { // state array index
          "stateName": "state[&1].stateName",
          "location":  "state[&1].location",
          "cities": {
            "*": { // city array index
              "name": "state[&3].cities[&1].cityname",
              "pop":  "state[&3].cities[&1].citypopualtion"
            }
          }
        }
      }
    }
  }
]