Coding Standards for Database Files › Coding Standards for RPG III Programs › Techniques in RPG III Programs › Uses of the File Information Data Structure

Uses of the File Information Data Structure

Because it is so easy under OS/400 to redirect a file, either by use of the library list, or by an explicit override, confusion can arise as to which file was actually used for a report or display. Consider including the file and library name on the report or display—the names can be obtained from the file information data structure.

The file information data structure can also be used to obtain the current line number, so that subfiles can be re-displayed, while still positioned at the same place.

An externally described file may also define the file data structure.