Finding Number of Record in Open Hub/ InfoSpoke

Hi BW Gurus,

I have specific requirement regarding Open Hub/ InfoSpoke. When I am downloading data on my application server I have to generate three file .

(1) Data file

(2) Control File

(3) No of Record file

I am finding problem to generate third file. I go through with “ZCL_RSB_FILE_LOGICAL” class but didn’t find where I shall write ABAP code.

Shall I write separate ABAP program for finding number of record from "Data File" which I can link into Process Chain or is there any other simple way?

I need your suggestion.

FYI…This is specific requirement for only one InfoSpoke and finding number of record and creating third file ABAP program logic should not affect other InfoSpoke.

Thanks in Advance.