I need to do following.
- create some models
- upload a text file the text file has
a. first row with header info.
b. rows with fixed column length for different columns
c. last row with trailer info.
- i need to process line by line and put it into several tables or models terms in frappe
- must be able to roll back effect if 1 row is failed
- max rows is 20000
Can I do that using frappe? I hope there is at least a book for developing in frappe as a reference.