Replace Empty Strings With Nulls

This transformation lets users replace all occurrences of empty strings with nulls in a dataframe.

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

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

Now, if the requirement is to replace empty strings in col_A and col_C with null, then user can configure the ReplaceEmptyStringsWithNulls transformation in the below manner:

transformations = [ "ReplaceEmptyStringsWithNulls" ]

The transformed response will look like:

{
  "col_A": null,
  "col_B": 4,
  "col_C": null
}