Read CSV file and and create customized field

[Soheil Pourbafrani]

Hi friends,
I'm going to read a CSV file that has 3 columns. I want the final loaded
datatype to have other columns inferred by that 3 columns. For example, I
would split the first column of the CSV file and create 3 new columns.
The problem is I did not find a straightforward approach for that. Here is
what I have so far:

env.readCsvFile("pathToCsv")
        .fieldDelimiter(",")
        .ignoreFirstLine()
        .ignoreInvalidLines()
        .type(String.class, String.class, String.class)
        .print();

So is there any way to show the readCSVFile how to split CSV records or I
should add an extra map function after loading CSV to create my desired
schema?

Thanks