Descendants Selector

Works on arrays and objects and to retrieves the values of all matching key-value pairs in the sub-tree under the selected context regardless of the hierarchical structure of the fields. Let’s see how Descendants Selector works.

The .. selector acts on arrays and objects

Input Payload

{
  "employees": {
    "employee": {
      "emp_name": "ram",
      "address": {
        "street": {
          "emp_name": "john",
          "employeenumber": 1234
        },
        "area": {
          "zip": "110032",
          "emp_name": "shyam"
        }
      }
    }
  }
}

Dataweave expression:

%dw 2.0
output application/json
---
{
  emp_name: payload.employees..emp_name
}

Output

{
  "emp_name": [
    "ram",
    "john",
    "shyam"
  ]
}