Question 174731 in Json Question posted in
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Json – Jolt to remove null elements of root elements

I need help to remove null elements from JSON using jolt. I want to remove only root level elements containing null.

Input :

{
  "x": null,
  "y": null,
  "z": [
    {
      "id": "1",
      "name": "2",
      "price": null,
      "quantity": 1
    }
  ]
}

Expected Output

{
  "z": [
    {
      "id": "1",
      "name": "2",
      "price": null,
      "quantity": 1
    }
  ]
}
Tags:

2

Answers


  1. 0

    Just dive one level deeper while using basic "*": "&" match in order the attributes stated at the outermost level with null values to vanish such as

    [
  {
    "operation": "shift",
    "spec": {
      "*": {
        "*": "&1[]" // &1 represents the key grabbed from one outer level(it's "z" here)
      }
    }
  }
]

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

    enter image description here

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  2. 0

    You can use the value of the z and bring in the z like this:

    [
  {
    "operation": "shift",
    "spec": {
      "@z": "z"
    }
  }
]
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