How to loop thru or iterate an array list and then concatenate the values in Dataweave

Question

I have an input payload [id, name]. Based on this input, I want to loop through each value in the array and form a where clause for my select statement.

Input:

{
"column": ["id","name"]
} 

Expected Output:

"id == '123' and name == 'abc'"

With one column I am able to do, but with multiple columns how to iterate and then concatenate?

Answer 1

Assuming you lookup values from another array, you could do something crude like this.

%dw 2.0
output application/json
var values = [2,"test"]
---
payload.column map 
{ 
    a: $ ++ " == " ++ "'" ++ values[($$)] ++ "'"
}.a  joinBy " and "