In this example, the conversion of the Id key expression and personId key expression to a numeric data type, specifically Long, is demonstrated.

Sample Original Message

{
    "Id":"123",
    "personId":"456",
    "name":"xxx",
    "surname":"yyy"
}
CODE

JOLT Code

[
   {
      "operation" : "modify-overwrite-beta",
      "spec" : {
         "Id" : "=toLong",
         "personId" : "=toLong"
      }
   }
]
CODE

Sample Result Message

{
  "Id" : 123,
  "personId" : 456,
  "name" : "xxx",
  "surname" : "yyy"
}
CODE