Question 136953 in Json Question posted in
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Json – Transform arrays of objects to array of objects with jolt

I am having trouble dealing with arrays in JOLT.

Input:

[
  {
    "id": "1",
    "home_phone": [
      "55555555",
      "66666666"
    ]
  },
  {
    "id": "2",
    "home_phone": [
      "77777777",
      "88888888"
    ]
  }
]

Desired output:

[
  {
    "id": "1",
    "home": "55555555"
  },
  {
    "id": "1",
    "home": "66666666"
  },
  {
    "id": "2",
    "home_phone": "77777777"
  },
  {
    "id": "2",
    "home_phone": "88888888"
  }
]

Note that each element of the home_phone array should be matched with its correspondent id in its JSON document.

This is the spec I have drafted so far without much success:

[
  {
    "operation": "shift",
    "spec": {
      "*": {
        "home_phone": {
          "*": "[].phone",
          "@(1,id)": "[].id"
        }
      }
    }
  }
]

Any ideas? Thanks!

Tags:

2

Answers


  1. 0

    You can create your objects in an array of an array in one shift operation and then you can bring them up with just going to that level with "*": "" in the second shift operation.

    [
  {
    "operation": "shift",
    "spec": {
      "*": {
        "home_*": {
          "*": {
            "@(2,id)": "[&3][&1].id",
            "@0": "[&3][&1].&(2,1)"
          }
        }
      }
    }
  },
  {
    "operation": "shift",
    "spec": {
      "*": ""
    }
  }
]
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  2. 0

    One approach would be using

    [
  {
    "operation": "shift",
    "spec": {
      "*": {
        "home_phone": {
          "*": { // partition the objects by indexes from different two levels 
            "@2,id": "&3_&1.id",
            "@": "&3_&1.&2"
          }
        }
      }
    }
  },
  { // add an array wrapper while getting rid of newly formed object labels
    "operation": "shift",
    "spec": {
      "*": "[]"
    }
  }
]
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