Match Fields Routine

Figure 1 shows the specific steps in the RPG IV match fields routine. The item numbers in the following descriptions refer to the numbers in the figure.

1 : If multifile processing is being used, processing continues with step 2; otherwise, the program branches to step 3.

2 : The value of the match fields in the hold area is tested to determine which file is to be processed next.

3 : The RPG IV program extracts the match fields from the match files and processes sequence checking. If the match fields are in sequence, the program branches to step 5.

4 : If the match fields are not in sequence, the RPG IV exception/error handling routine receives control.

5 : The match fields are moved to the hold area for that file. A hold area is provided for each file that has match fields. The next record is selected for processing based on the value in the match fields.