How to convert packed decimal values to numeric values via File Master using COBOL copybooks
Article ID: 142191
Updated On:
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Issue/Introduction
The only method to get this done is to use a File Master Reformat data set, aka. REFFILE.
Such a REFFILE will be created via File Master ISPF 3.11 menu
("11 REFORMAT Convert file from one record layout to another").
Resolution
How to convert packed decimal values to numeric values via File Master using COBOL copybooks
This document describes how packed decimal values (Computational-3) can be converted to numeric values via File Master using COBOL copybooks.
The only method to get this done is to use a File Master Reformat data set, aka. REFFILE.
Such a REFFILE will be created via File Master ISPF 3.11 menu
("11 REFORMAT Convert file from one record layout to another").
You need two COBOL data structures, aka. copybooks. One copybook for the source data structure and one for the new data structure.
For example:
...
01 DATAREC1OLD.
02 FIELD1-PCK PIC 9(08)V99 COMP-3.
02 FILLER PIC X(72).
...
01 DATAREC1NEW.
02 FIELD1-NUM PIC 9(06)V99.
02 FILLER PIC X(72).
...
That is a File Master 3.11 Reformat example:
------------------ CA File Master Plus -- Dataset Reformat ------------------
OPTION ===>
BLANK - Update Reformat Control Parms E - Execute Reformat
Reformat "FROM":
Dataset name ===> 'your.CONVERT.INPUT'
Member name ===>
Layout DSN ===> 'your.CONVERT.LIB'
Layout member ===> CPYBK#O1
Reformat "TO":
Dataset name ===> 'your.CONVERT.OUTPUT'
Member name ===>
Layout DSN ===> 'your.CONVERT.LIB'
Layout member ===> CPYBK#N1
Replace Keys ===> N ('Y' to replace duplicate keys in KSDS)
Reformat Control Parm:
Dataset name ===> 'your.CONVERT.LIB'
Member name ===> REFORMAT
Execution mode ===> E O = Online S = Submit JCL E = Edit JCL
After pressing enter you have to assign the "FROM" fields to the "TO" fields. Enter 2 and 3 in the TO section of the panel, for example:
CA File Master Plus -- Reformat your.CONVERT.LIB(REFORMAT)
COMMAND ===> SCROLL ===> CSR
FROM Record ------------ CPYBK#O1 of your.CONVERT.LIB --------------
Num Field Name Pos Format Row 1 of 3
1 DATAREC1OLD 1 78
2 FIELD1-PCK 1 P 8.2
3 FILLER 7 C 72
*************************** Bottom of Record Layout ***************************
TO Record ------------ CPYBK#N1 of your.CONVERT.LIB --------------
Num Field Name Pos Format Reformat Row 1 of 3
1 DATAREC1NEW 1 80
2 FIELD1-NUM 1 N 6.2 2
3 FILLER 9 C 72 3
*************************** Bottom of Record Layout ***************************
After pressing enter the numbers will be automatically translated to the field names.
Press PF3 and type E now.
You will see the JCL now. For example:
...
//your_job_card...
//REFMT EXEC PGM=CAWABATC,REGION=4M
//STEPLIB DD DSN=your.FM110.CDBILOAD,
// DISP=SHR
//SYSPRINT DD SYSOUT=*
//SYSUDUMP DD SYSOUT=*
//SYSUT1 DD DSN=your.CONVERT.INPUT,
// DISP=SHR
//SYSUT1O DD DSN=your.CONVERT.OUTPUT,
// DISP=SHR
//SYSIN DD *
COPY ,
INFILE(SYSUT1),
OUTFILE(SYSUT1O),
REFFILE(your.CONVERT.LIB(REFORMAT)),
REPLACEKEY(N)
/*
...
Now, when running the job and using the following three records input file:
...
------------------------------------------------------------------------------
....î@record#01-----------------------------------------------------------------
0013579889987FF66666666666666666666666666666666666666666666666666666666666666666
00246C953694B0100000000000000000000000000000000000000000000000000000000000000000
------------------------------------------------------------------------------
......record#02-----------------------------------------------------------------
0022229889987FF66666666666666666666666666666666666666666666666666666666666666666
00222C953694B0200000000000000000000000000000000000000000000000000000000000000000
------------------------------------------------------------------------------
......record#03-----------------------------------------------------------------
0033339889987FF66666666666666666666666666666666666666666666666666666666666666666
00333C953694B0300000000000000000000000000000000000000000000000000000000000000000
------------------------------------------------------------------------------
...
The OUTPUT will contain the numeric data:
BROWSE your.CONVERT.OUTPUT Line 0000000000 Col 001 080
Command ===> Scroll ===> CSR
********************************* Top of Data **********************************
01234567record#01---------------------------------------------------------------
02222222record#02---------------------------------------------------------------
03333333record#03---------------------------------------------------------------
******************************** Bottom of Data ********************************
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