Examples of Preparing and Compiling a Program

The acu4gl sub-directory within your Sample directory contains three sample programs that are based on the code excerpt below. These programs show different ways of how to manipulate your COBOL records in readiness for being written to a database.

Note: If you are not familiar with XFD directives, you may want to read the topics in the Using XFD Directives section before continuing with this topic.

The examples are based upon a purchase orders file from a COBOL program and will be stored in a database. The file descriptor below contains the records that handle all of the information from a fictitious company's purchase orders. Within it are two record types:

The purchase order (header) record (there is one of these for each purchase order form)
The purchase order detail record (there is one detail record for each line item in a purchase order)

The file is keyed off the purchase order number. This following three examples demonstrate three different approaches to using the COBOL file descriptor and XFD directives:

Example 1 (order1.cbl) only includes the largest record in the database table; see Example 1 - Compiling with just the -Fx compiler option.
Example 2 (order2.cbl) uses the WHEN XFD directive, which causes all record formats to be included in the database; see Example 2 - Compiling with the WHEN XFD Directive.
Example 3 (order3.cbl) groups together several fields and renames them, for convenience; see Example 3 - Using Additional XFD Directives.

IDENTIFICATION DIVISION.
program-id.  purchase.
ENVIRONMENT DIVISION.
input-output section.
file-control.
 
select p-o-file
assign to disk "purch1"
organization is indexed 
access mode is dynamic
record key is p-o-number
file status is p-o-status.
 
DATA DIVISION.
file section.
fd p-o-file.
01 p-o-record.
   03 p-o-division-number                pic 9(3).
   03 p-o-record-type                    pic x.
      88 header-record                   value "h".
      88 detail-record                   value "d".
   03 p-o-number                         pic 9(10).
   03 p-o-number-detail redefines 
         p-o-number.
      05 picking-ticket-number           pic 9(6).
      05 shipping-region                 pic 9(2).
      05 p-o-customer-type               pic 9(2).
      05 p-o-customer-breakdown redefines 
            p-o-customer-type.
         07 customer-category            pic x.
         88 p-o-customer-retail          value "r".
         88 p-o-customer-whlsale         value "w".
         07 customer-pay-format          pic x.
            88 is-net-30                 value "3".
            88 is-net-10                 value "1". 
   03 p-o-date.
      05 p-o-yy                          pic 9(2).
      05 p-o-mm                          pic 9(2).
      05 p-o-dd                          pic 9(2).
 
01 p-o-detail-record.
   03 p-o-dept-number                    pic 9(3).
   03 p-o-record-type                    pic x.
   03 detail-p-o-number                  pic 9(10).
   03 p-o-shipping-info.
      05 p-o-quantity-to-ship            pic s9(4) comp.
      05 p-o-total-quantity              pic s9(4) comp.
   03 p-o-notes.
      05 notes-line occurs 3 times       pic x(40).
working-storage section.
01 p-o-status                            pic x(2).
PROCEDURE DIVISION.
level-1 section.
main-logic.
 
open output p-o-file.
close p-o-file.
stop run.