JOLT: array item string to integer conversion

user_8655700 0
Viewed 429

How can I transform a specific item in an array to integer? In the following example, I want only the 3rd element 456 to be converted to integer, and 123 to be left intact:

input:

{
  "arr": [
    "hello",
    "123",
    "456"
  ]
}

Trying this spec:

[
    {
        "operation": "modify-overwrite-beta",
        "spec": {
            "arr": "=toInteger"
        }
    }
]

I get actual output:

{
  "arr": [
    "hello",
    123,
    456
  ]
}

However, the desired output should look like this: expected output:

{
  "arr": [
    "hello",
    "123",
    456
  ]
}

Thank you, Gerasimos

jolt
1 Answers

You should get

{
  "arr": [
    "hello",
    123,
    456
  ]
}

for the current case. Just need to restrict to the index(2) of the desired element within the spec such as

[
  {
    "operation": "modify-overwrite-beta",
    "spec": {
      "arr": {
        "[2]": "=toInteger"
      }
    }
  }
]

in order to get the desired result, that's :

{
  "arr": [
    "hello",
    "123",
    456
  ]
}
user_58413060
Related