Do you mean this format?
I would suggest that you can divide and conquer this issue. Here is my suggestion:
Phase 1: Basic Project
Work on export data as a CSV from Xcalar, and then import data as a CSV in Tableau. This would work great and require minimum investment.
Phase 2: Advanced Project
You will need to look at the workbook format, and learn how to generate it automatically. You will also need to think about how to combine multiple workbooks. Hint: You will need to write an export UDF in python.