Jolt transform for moving json message to subset without mapping all the fields one by one

[#1]

I'm to Jolt transformation. I have a simple requirement to transform a json message, were I have to move the contents of the message to a subset without mapping the filed one by one. Input message: { "primary": { "value": 4 }, "quality": { "value": 3 } } Expected Output: { Data:{ "primary": { "value": 4 }, "quality": { "value": 3 } } }.,HI, I am looking to convert a json message using Jolt. it is a simple transformation, were i have to move the entire json message to a subset without mapping field by field

@Matt Burgess

[#2 · Accepted solution]

@Saravanan Subramanian

Try with below Jolt Spec:

[
  {
    "operation": "shift",
    "spec": {
      "*": "Data.&"
    }
  },
  {
    "operation": "default",
    "spec": {
      "Data": {}
    }
  }
]

Input:

{
  "primary": {
    "value": 4
  },
  "quality": {
    "value": 3
  }
}

Output:

{
  "Data" : {
    "primary" : {
      "value" : 4
    },
    "quality" : {
      "value" : 3
    }
  }
}

Another way of doing this is using Replace Text processor by capturing all the content of flowfile and replacement value as

Search Value

(^.*$)

Replacement Value

{ "Data": $1 }

Character Set

UTF-8

Maximum Buffer Size

1 MB

Replacement Strategy

Regex Replace

Evaluation Mode

Entire text

-

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[#3]

Thanks very much @Shu for your solution . I managed to find a way which is almost similar to yours.