takeWhile

takeWhile(Object, (value: Any, key: Key) -> Boolean): Object

Selects key-value pairs from the object while the condition is met.

Introduced in DataWeave 2.3.0. Supported by Mule 4.3 and later.

Parameters

Name Description

Name	Description
`obj`	The object to filter.
`condition`	The condition (or expression) used to match a key-value pairs in the object.

obj

The object to filter.

condition

The condition (or expression) used to match a key-value pairs in the object.

Example

This example iterates over the key-value pairs in the object and selects the elements while the condition is met. It outputs the result into an object.

Source

%dw 2.0
import * from dw::core::Objects
output application/json
var obj = {
  "a": 1,
  "b": 2,
  "c": 5,
  "d": 1
}
---
obj takeWhile ((value, key) ->  value < 3)

Output

{
  "a": 1,
  "b": 2
}