Add Prefix To Column Names

It lets the user add a desired prefix to select/all column names.

This transformation expects user to provide below inputs:

Input Arguments	Mandatory	Default Value	Description
prefix	Yes	-	It defines the desired prefix that will be added to the column name
column-names	No	all	It defines the list of column names to which the prefix will get added

For example, consider we have below restonomer response in json:

{
  "col_A": 5,
  "col_B": 4,
  "col_C": 3
}

Now, suppose the requirement is to add prefix to the columns like below:

col_A -> test_col_A
col_B -> test_col_B

Then, user can configure the AddPrefixToColumnNames transformation in the below manner:

{
  type = "AddPrefixToColumnNames"
  suffix = "test"
  column-names = ["col_A", "col_B"]
}

The transformed response will now have the columns with the desired prefix like below. Note that, underscore character (_) will get added automatically, separating prefix and column name part.

{
  "test_col_A": 5,
  "test_col_B": 4,
  "col_C": 3
 }