z/OS | COBOL INMOD Example | Teradata FastLoad - COBOL INMOD Example - FastLoad

The INMOD in the following example reads five 80-byte records from the input data file, combines them, then returns a single, 400-byte record to the Teradata FastLoad utility.

IDENTIFICATION DIVISION.
PROGRAM-ID.  BLKEXIT.
AUTHOR.  STV   .
INSTALLATION.  TERADATA.
DATE-WRITTEN.  05 APRIL 1984.
DATE-COMPILED.
SECURITY.  OPEN.
REMARKS.
   THIS PROGRAM IS AN EXAMPLE OF A COBOL INMOD ROUTINE.
   THE NAME MUST BE BLKEXIT.
   FUNCTION:   THE PROGRAM READS FIVE 80-BYTE RECORDS AND
            RETURNS A COMPOSITE RECORD WHICH IS 400 BYTES
            LONG.

ENVIRONMENT DIVISION.

CONFIGURATION SECTION.
SOURCE-COMPUTER.  IBM-370.
OBJECT-COMPUTER.  IBM-370.
INPUT-OUTPUT SECTION.
FILE-CONTROL.
   SELECT INMOD-DATA-FILE ASSIGN TO SYSIN-INDATA.
DATA DIVISION.
FILE SECTION.
FD    INMOD-DATA-FILE
      BLOCK CONTAINS 0 RECORDS
      LABEL RECORDS STANDARD.
01    INPUT-PARM-AREA      PICTURE IS X(80).

WORKING-STORAGE SECTION.
01    NUMIN      PIC S9(4) COMP VALUE +0.
01    NUMOUT     PIC S9(4) COMP VALUE +0.
    01    FILES_OPEN PIC S9(4) COMP VALUE +0.

LINKAGE SECTION.
01    STRUCT.
      02 RETURN-INDICATEPIC S9(9) COMP.
      02 RECORD-LEN       PIC S9(9) COMP.
      02 RECORD-BODY.
         03 DATA-AREA1  PIC X(80).
         03 DATA-AREA2  PIC X(80).
         03 DATA-AREA3  PIC X(80).
         03 DATA-AREA4  PIC X(80).
         03 DATA-AREA5  PIC X(80).
PROCEDURE DIVISION USING STRUCT.
BEGIN.
MAIN.
IF RETURN-INDICATE = 0 THEN
   DISPLAY ’BLKEXIT CALLED - RETURN CODE 0’
   PERFORM OPEN-FILES
   PERFORM READ-RECORDS
   GOBACK
ELSE
IF RETURN-INDICATE = 1 THEN
   DISPLAY ’BLKEXIT CALLED - RETURN CODE 1’
   PERFORM READ-RECORDS
   GOBACK
ELSE
IF RETURN-INDICATE = 2 THEN
   DISPLAY ’BLKEXIT CALLED - RETURN CODE 2’
   PERFORM OPEN-FILES
   MOVE 0 TO RECORD-LEN
   GOBACK
ELSE
    IF RETURN-INDICATE = 5 THEN
   DISPLAY ’BLKEXIT CALLED - RETURN CODE 5’
       IF FILES_OPEN = 1   THEN
       CLOSE INMOD-DATA-FILE
           MOVE 0 TO FILES_OPEN.
   MOVE 0 TO RECORD-LEN
   GOBACK
ELSE
   DISPLAY ’BLKEXIT CALLED - RETURN CODE X’
   GOBACK.
OPEN-FILES SECTION.
   OPEN INPUT INMOD-DATA-FILE.
       MOVE 1 TO FILES_OPEN.
   MOVE 0 TO RETURN-INDICATE.
READ-RECORDS SECTION.
   MOVE 0 TO BLOCK-NUM.
   READ INMOD-DATA-FILE INTO DATA-AREA1
      AT END GO TO END-DATA.
   ADD 1 TO NUMIN.
   READ INMOD-DATA-FILE INTO DATA-AREA2
      AT END GO TO END-DATA.
ADD 1 TO NUMIN.
   READ INMOD-DATA-FILE INTO DATA-AREA3
      AT END GO TO END-DATA.
   ADD 1 TO NUMIN.
   READ INMOD-DATA-FILE INTO DATA-AREA4
      AT END GO TO END-DATA
    ADD 1 TO NUMIN.
READ INMOD-DATA-FILE INTO DATA-AREA5
   AT END GO TO END-DATA.
ADD 1 TO NUMIN.
MOVE 0 TO RETURN-INDICATE.
MOVE 400 TO RECORD-LEN.
ADD 1 TO NUMOUT.
END-DATA SECTION.
MOVE 0 TO RETURN-INDICATE.
CLOSE INMOD-DATA-FILE.
    MOVE 0 TO FILES_OPEN.
DISPLAY ’NUMBER OF INPUT RECORDS =’ NUMIN.
DISPLAY ’NUMBER OF OUTPUT RECORDS=’ NUMOUT.
MOVE 0 TO RECORD-LEN.
MOVE 99 TO RETURN-INDICATE.
GOBACK.