Hi all, I'm finished with my implementation, an app that analyses financial data for budgeting. But there are no abstractions in my code whatsoever, everything is coded exactly to the point. So now that I'm done I'd like to start it over, this time using far more abstractions than I have, I was thinking along the lines of creating a DSL for it first. The aspects I have to consider are two-fold: ETL-ish - I need to assemble the "records" from a set of csv files BI-ish - I need then to group, filter and aggregate the data. I've come across "How to write a financial contract" S. Peyton Jones in the "fun of programming" and it gives me some ideas on how to go about the BI-ish part of the application. Does anyone know of a DSL example which could fit the bill? Günther