Retain all primary fields in Jolt, while prioritizing a specific sub-field at the beginning.

edit

To achieve this, you can use the "Default" operation in Jolt along with the "Sort" operation. Here is an example spec that will prioritize the "name" sub-field before other fields:

[
  {
    "operation": "default",
    "spec": {
      "name": ""
    }
  },
  {
    "operation": "sort",
    "spec": {
      "by": "name",
      "order": "DESCENDING",
      "*": {
        "order": "KEEP"
      }
    }
  }
]

In this spec, the "Default" operation sets a default value of "" for the "name" sub-field. This is just to ensure that all documents have a "name" field, even if it is empty.

The "Sort" operation then sorts the fields in each document by the value of the "name" sub-field. The "by" parameter specifies that we want to sort by the "name" field, and the "order" parameter specifies that we want to sort in descending order.

The "*": {"order: "KEEP"} line ensures that all other fields are retained in their original order, so the only change to the output is that the "name" sub-field is prioritized at the beginning.

Note that this spec assumes that all input documents have a "name" sub-field. If some documents do not have a "name" field, you may need to modify the "Default" operation to add the missing field, or modify the "Sort" operation to handle missing fields gracefully.