A formula is a symbolic statement of the manipulations you want to perform on certain data. Logi JReport provides a number of built-in functions for you to build your formula. Also it provides user defined formula (UDF) functions that allow you to design your own formula functions.
Generally, formulas can be used:
- to calculate information you cannot obtain directly from database data fields,
- to compare data,
- to join text with data,
- to convert data from one form to another,
- to enhance the formatting options with text strings, and
- to do a number of other things to customize your reports.
The following topics describe Formula References: