Is there any other way to club the multiple maps in a single list in jolt?-CodePudding

I have a use case for which I need to club the maps in a single list. But don't want to use another shift operation.

Can anyone help me out?

Input JSON

{
  "orders": [
    {
      "orderId": "10001",
      "order_parts": [
        {
          "id": "00001",
          "items": [
            {
              "quantity": 1,
              "price": 20
            },
            {
              "quantity": 1,
              "price": 20
            }
          ]
        },
        {
          "id": "00004",
          "items": [
            {
              "quantity": 1,
              "price": 20
            }
          ]
        }
      ]
    }
  ]
}

Expected output

{
  "orderId": "10001",
  "order_parts": [
    {
      "id": "00001",
      "items": [
        {
          "quantity": 1,
          "price": 20
        },
        {
          "quantity": 1,
          "price": 20
        }
      ]
    },
    {
      "id": "00004",
      "items": [
        {
          "quantity": 1,
          "price": 20
        }
      ]
    }
  ],
  "totalQuantity": [ 1, 1, 1 ]
}

Jolt Spec

[
  {
    "operation": "shift",
    "spec": {
      "orders": {
        "*": {
          "order_parts": {
            "*": {
              "items": {
                "*": {
                  "quantity": "[&1].totalQuantity"
                }
              }
            }
          },
          "@": "[&]"// By this I want to copy input json to be used in the next shift.
        }
      }
    }
  },
  {
    "operation": "shift",
    "spec": {
      "*": {
        "*": "&"
      }
    }
  }
]

For now, I have used another shift, but it'll help me if this is not necessary to use another shift operation.

Any help will be appreciated.

Thanks.

CodePudding user response：

You can use the trick of "@": "" instead such as

[
  {
    "operation": "shift",
    "spec": {
      "orders": {
        "*": {
          "order_parts": {
            "*": {
              "items": {
                "*": {
                  "q*": "totalQ&(0,1)"// the replacement of the zero (current) level literal "uantity" for the first asterisk(which might me multiple)
                }
              }
            }
          },
          "@": ""
        }
      }
    }
  }
]