rpg programming language_wipro_v2.pdf

7/27/2019 RPG Programming Language_Wipro_V2.pdf

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INTRODUCTION RPG is an abbreviation for Report Program Generator. It is a high level

language in which the programmer codes the specifications.

Developed by IBM in 1960s.

RPG code is written on a variety of specification forms, each with a specific setof functions.

Many of the entries which make up a specification type are position-dependent.

Each entry must start in a specific position depending on the type of entry andthe type of specification.

There are seven types of specifications.

Each specification type is optional.

Specifications must be entered into your source program in the order HFELICO.


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FEATURES OF RPG Structured language

RPG provides structured programming constructs (Opcodes, Subroutines,Subprograms) that helps us in approaching a modular program design.

Strong at file operationThe data records can be accessed in any direction, sequentially or randomly

with out need to open and close the files.

Strong interactive programming languageRPG in combination with Screen Design Aid (SDA) forms a powerful

interactive programming language. The screens designed through SDA can be easilyaccessed from an RPG program.

Sub filesThis is excellent feature of RPG. Sub files are special kind of screen files

using which we can display multiple records onto a screen with minimal programmingeffect.


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Generation of Complex Reports:RPG in combination with RLU (Report Layout Utility) helps us in generating

formatted and complex reports.

Interface with CL language :We can establish data communication among a CL language and an RPG

program.


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Naming Conventions & Data Types

Naming Conventions First character of all variable names must be A to Z (or a to z), @, # or $.

Subsequent characters A to Z (or a to z), @, # or $, 0 to 9, or theunderscore (_) character

Not case sensitive If @, # or $ is used as the first character of a variable name, at least one

other character must be specified

No embedded blanks or periods allowed All names are global to all areas of program A file / recrd format name must be 1 to 10 characters in length A file name cannot be the same as record format name

Data Types

Character (A or blank) Float (F), Packed (P), Integer (I) Date (D), Time (T), Timestamp (Z)


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Indicators

An indicatoris a logical variable that is either set ON (1) or OFF (0).

They are generally used to indicate the result of an operation, indicate errorcondition, indicate file operation status or to condition (control) the processing of anoperation.

They determine the path the program will take during processing depending on

how they are set or used.

Indicators can be defined as variables

Indicators can be set ON or OFF using Opcodes SETON and SETOFF or usingMOVE statements


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Indicators are of 2 types

General indicators and special indicators

General Indicators are 0 99.

Special Indicators:

1. Halt indicators H1 H9. These are used to signal severe error. When Halt

indicator is set on, program ends abnormally. 2. External indicators U1 to U8. Passed from out side RPG program. Used to

condition opening of a file or to control calculations

3. First Page 1P - Used in logic cycle program to print Report Header

4. Matching Indicator MR - Used in logic cycle program to process matchingrecords of Primary and Secondary files

5. Level Break L0 L9 ( used in logic cycle), LR Last record 6. Return Indicator RT used as return function

7. Overflow indicator OA to OG, OV used for printer files

8. Command keys (or) Function keys KA to KN, KP to KY command level

keys F1 to F24


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Constants and Literal Values

Named constants are defined with data type N using I Spec Figurative constants: Special, built-in names that have predefined values

associated with them. Names begin with an asterisk (*)

*BLANKS*ZEROS*LOVAL*HIVAL*OFF*ON


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Reserved Fields


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Compiler Directives

Directs compiler to perform certain operations such as printing compiler listing,inclusion of source members. Begin in position 7 of RPG statement

/COPY : Compiler includes source code from other source member

/TITLE : Prints specified text on top of each page of compiler listing

/SPACE : Causes blank lines to be printed on compiler listing


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Reserved Words

Reserved words are special names with predefined purpose

*DATE : Used to retrieve program run date.Format is determined by the system value. Format may beoverridden by an entry in column 19 of H spec.

*DAY : Used to retrieve the session day*MONTH : Used to retrieve the session month*YEAR : Used to retrieve the session year

*ENTRY : Used with PLIST to define the entry parameter list*INZSR : Used with BEGSR to define the Initialization subroutine*LIKE : Used with DEFN to define a field like another field*LOCK : Used with IN, OUT to perform read/write to data area with lock*DTAARA : Used with DEFN, IN, OUT to define and perform read/write

operations on data area*PSSR : Used with BEGSR to define the Program status subroutine


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RPG/400 SPECIFICATIONS

RPG source statements consists of 80-character card images having line numbersin the first few columns of each source statements.

Every line having a form type in column 6 (H, F, E, L, I, C, O).

Any statement with an asterisk (*) in column 7 is a comment.

Specification types:

1. Control specifications (H spec) provide the compiler with information aboutgenerating and running programs, such as the program name, date format, anduse of alternate collating sequence or file translation.

2. File description specifications (F Spec) describe all the files that the program uses.


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3. Extension specifications (E Spec) contains the array definitions

4. Line Counter Specifications (L spec) describe the length of the form and thenumber of lines to print on a page for a program described Printer file

5. Input Specifications (I spec) describe the structure of program described files,data structure and subfield definitions and named constant definitions

5. Calculation specifications (C spec) describe the calculations done on the dataand the order of the calculations. Calculation specifications also control certaininput and output operations.

6. Output specifications (O Spec) describe the output records and fields used bythe program.


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Sample RPG Program - Demo

Creating a new RPG source member using PDM

Entering source statements using SEU

Compilation and resolving compilation errors

Executing RPG program from command line


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CONTROL SPECIFICATION


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Control Specifications - H Spec

Identified by H in column 6

Provides information about generating and running programs

Only one control specification is allowed per program

Data area named RPGHSPEC can be created to contain the information to beused for all RPG/400 programs that do not contain a control specification


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CRTDTAARA DTAARA(QGPL/RPGHSPEC)+

TYPE(*CHAR) +LEN(26) +

VALUE(DATFMT(*YMD/) TIMFMT(*HMS)) +

TEXT(Default RPG H-SPEC)

OR

CRTDTAARA DTAARA(QPRG/DFTHSPEC)+

TYPE(*CHAR) +

LEN(26) +

VALUE(DATFMT(*YMD/) TIMFMT(*HMS)) +

TEXT(Default RPG H-SPEC)

OR

Use H specification in RPG


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File Specifications


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File Description Specification

Position Description

6 F

7-80 non-commentary part

742 fixed-format entries

4480

81100 Comments


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Columns Description

6 Form type (F)

7 14 File Name

15 File Type (Mode in which file is being used in the program)

I Input file, O Output file, U Update File, C Combined

16 File Designation (F Full Procedural, P Primary, S Secondery)

17 End Of File

18 Sequence

19 File Format (E externally described file, F Program described file)


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Columns Description

20 File addition

Blank Do not add records

A Allow record Adds

21 Match field sequence

Blank or A Ascending

D Descending

22 File Format:

E Externally Described

F Program Described

23-27 Record Length

28 Limits processing :

Blank : Sequential or random processing

L Limits processing

29-33 Length of key or record address


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Columns Description

34 Record Address type

Blank Non keyed processingA - Character keys

D - Date Keys

G - Graphic keys

K - Externally described key

P - Packed key

T - Time Keys

Z - Time Stamp Keys

35 File Organization

B Non Keyed , Program described

I - indexed

T Record address


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Columns Description

36-42 DeviceDisk - Disk file

Printer - Printer File

SEQ - Sequentially Organized

SPECIAL - Special device

WORKSTN - Workstation file

43 (reserved)

44-80 File Keywords

81-100 Comments


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FILE READ

0001.00 FEMPMASTER IF E K DISK

0002.00 FDSPLYFILE CF E WORKSTN

0002.01 C READ EMPRECFMT 10

0005.00 C DOW *IN10=*OFF

0006.00 C EXFMT READING


0008.00 C ENDDO

0009.00 C SETON LR

File File End of File

Filename Type Designation File Addition Sequence

EMPMASTER I F

File Limits Record

Format Processing Address Type Device

E K DISK


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Calculation Specifications


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C-SPEC

In this specification, we code variable declarations and the executable statements.

It primarily consists of essentially a Operation code (verb) and three operandsknown as FACTOR-1, FACTOR-2 and RESULT

Operation codes entered on the calculation specifications indicate the kind ofoperation to be performed

For example, for reading a record, READ operation code will be used.


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LayoutColumns Description

1-5 Sequence number

6 C

7-8 Control Level : Blank,L0,L1-L9,LR,SR,AN,OR

9-11 Indicators : Blank,01-99,KA-KN,KP-KY,L1-L9,LR,MR,H!-H9,RT,U1-U8,OA-OG,OV

12-25 Factor 1

26-35 Operation code


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Columns Description

36-49 Factor 2 or Extended factor 2

50-63 Result Field

64-68 Result Field Length

69-70 Result Field Decimal Positions

71-76 Resulting Indicators (High/Low/Equal)

77-80 (Blank)

81-100 Comments


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1. Arithmetic operations

ADD

SUB

MULT

DIV

MVR

SQRT

Z-ADD

Z-SUB

2. Variable Definition and Move operations

MOVE

MOVEL

DEFN


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3. Date/time operations

TIME (Time of Day)

4. Structured programming operations

IFxx (If)

SELEC (Begin a Select Group)

WHxx (When True Then Select)

DO (Do)ENDDO

DOUxx (Do Until)ENDDO

DOWxx (Do While)ENDDO

ITER (Iterate)

LEAVE (Leave a Do Group)


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5. Branching operations

TAG (Tag)

GOTO (Go To)

CABxx (Compare and Branch)

6. Call operations

BEGSR (Beginning of Subroutine)

ENDSR (End of Subroutine)

EXSR (execute Subroutine)

CASxx (Compare And branch to Subroutine)


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CALL (Call a Program)

PARM (Identify Parameters)

PLIST (Identify a Parameter List)

7. File operations

OPEN (Open File for Processing)

CLOSE (Close Files)

READ (Read a Record)

WRITE (Create New Records)

READC (Read Next Changed Record)


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READE (Read Equal Key)

READP (Read Prior Record)

REDPE (Read Prior Equal)

SETGT (Set Greater Than)

SETLL (Set Lower Limit)

KFLD (Define Parts of a Key)

KLIST (Define a Composite Key)

CHAIN (Random Retrieval from a File)


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UPDAT (Modify Existing Record)

DELET (Delete Record)

COMIT (Commit)

ROLBK (Roll Back)

UNLCK (Unlock a Data Area or Release a Record)

8. Data area operations

IN (Retrieve a Data Area)

OUT (Write a Data Area)


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9. Array operations

MOVEA (Move Array)

XFOOT (Summing the Elements of an Array)

LOKUP (Look Up a Table or Array Element)

SORTA (Sort an Array)


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10. String operations

SCAN (Scan String)

CHECK (Check Characters)

SUBST (Sub string)

XLATE (Translate)

CAT (Concatenate Two Strings)


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ARITHMATIC OPERATIONS

ADD

The add verb is used to find the sum of numeric values.it has two formats:

Format1:

CODE Factor 1 Factor 2 Result Field INDICATORS

ADD NUM1 NUM2 RNUM HI LO EQ

This statement is equivalent to saying RNUM=NUM1+NUM2


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Format : 2


ADD NUM2 RNUM HI LO EQ

If factor1 is blank,factor2 is added to result and sum placed in result field.


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SUB

The SUB verb is with numeric values for subtract operation.

MULT

The MULT verb is used to find the product of two numbers.

DIV

The DIV verb is used for division operation with numeric values.

MVR

The MVR operation moves the remainder from the previous DIV operation to a

separate field named in the result field.


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SQRT

The SQRT operation derives the square root of the field named in the resultfield.

Z-ADD

The Z-ADD stands for zero add. Zero is added to the factor 2 and the sum isplaced in the result. This is basically used to declare, initialize or move a valueinto the numeric filed.

Z-SUB

The Z-SUB stands for zero subtract. Factor 2 is subtracted from zero and thedifference is placed in the result. This is basically used to negate the value of avariable.


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Program for Arithmetic operation

C MOVE 9 A 2 0

C MOVE 7 B 2 0

C MOVE *ZEROS C 3 0

C MOVE *ZEROS D 2 0

** A = A + B

C* ADD B A

C* A DSPLY**

C A ADD B C

C C DSPLY

**

C A SUB B C

C C DSPLY

**

C A MULT B C

C C DSPLY

**


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C A DIV B C

C MVR DC C DSPLY

C D DSPLY

C SQRT A C

C C DSPLY

**

C Z-ADD 2 E 2 0C E DSPLY

**

C Z-SUB 2 F 2 0

C F DSPLY

C SETON LR

O/P

DSPLY 16 ,DSPLY 2 ,DSPLY 63 ,DSPLY 1 ,DSPLY 2 ,DSPLY 3

DSPLY 2 ,DSPLY 2-


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Move operations

MOVE

MOVE is used to move data into a field. The value specified in factor1 will bemoved into the filed specified in result field. Used to convert numeric data tocharacter and vice versa

MOVEL

MOVEL (move left) is similar to MOVE with the only difference that the factor 2will be moved in to but is left justified.

DEFN

Define a field based on the attributes (data type,length and decimal positions)of another field.

Define field as a data area.


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Program for move operation0001.00 C MOVE 2345678 NUM1 5 0

0002.00 C NUM1 DSPLY

0002.01 **

0002.02 C MOVEL 1234637 NUM1 5 0


0002.04 **

0004.03 C MOVEL 'ABCDE' RES 3

0004.04 C RES DSPLY

0004.05 **

0004.06 C MOVE 'ABCDE' RES 3

0004.07 C RES DSPLY

0004.08 C SETON LR


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O/p

DSPLY 45678

DSPLY 12346DSPLY ABC

DSPLY CDE

Structured programming operations

IFxx

IF operation is used for conditional execution of statements. Each IF has acorresponding ENDIF or END statement.

The statements placed between the IF and ENDIF will be executed only when

the condition satisfied The condition may also be a compound condition supplemented by ANDxx or

ORxx

ELSE state can also be coded between IF and ENDIF so that if the condition isnot satisfied then the statements between ELSE and ENDIF can be executed.


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NOTE:

XX Denotes a relational operator which could any one of the following

EQ Equal to

NE Not equal to

GT Greater than

LT Less than

GE Greater than or equal to

LE Less than or equal to


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Example 1

Calculation of Bonus AND PERKS if basic greater than or equalto 3000

0002.00 C Z-ADD3000 BASIC 400003.00 C BASIC IFGE 30000004.00 C Z-ADD4000 BONUS 400005.00 C Z-ADD3000 PERKS 40

0005.02 C BONUS DSPLY0005.03 C PERKS DSPLY0005.04 C ENDIF0007.00 C SETON LR

o/p

DSPLY 4000DSPLY 3000


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Example :2

A clerk with salary more than 2500 or a manager will get a

bonus of 4000 and perks of 3000. Otherwise bonus would be

2000 and perks would be 12000000.02 C MOVEL 'CLERK' DESIGN 70000.03 C MOVEL 'MANAGER' DESIGN 70000.04 C Z-ADD 2500 BASIC 4 00001.00 C DESIGN IFEQ 'CLERK'

0001.01 C BASIC ANDGT 25000001.02 C DESIGN OREQ 'MANAGER'0001.03 C Z-ADD 4000 BONUS 4 00001.04 C Z-ADD 3000 PERKS 4 00001.07 C ELSE0002.00 C Z-ADD 2000 BONUS 4 0

0002.01 C Z-ADD 1200 PERKS 4 00005.01 C ENDIF


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0005.04 C BONUS DSPLY

0005.05 C PERKS DSPLY

0006.00 C SETON LRO/p

DSPLY 4000

DSPLY 3000

NOTE:

Only change manager to manager1 you get an output as 2000,1200

SELEC : when we have multiple nested IFs the code becomes complex and we will

have to take care of matching the IFs with their corresponding ENDIFs.

SELECENDSL can be used as an alternative in such a case.

Here we have multiple WHXX statements between SELEC and ENDSL. Ifany of the WHXX condition is satisfied then the statements under it will beexecuted. If none of the condition satisfy then the statements underOTHER will be executed.


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SYNTAX: FACTOR1 OPCODE FACTOR2

SELEC

WHXX

------

OTHER

------

ENDSL

DO ..ENDDO :A DO statement can be used to repeat the code enclosed between DO and ENDDO,a specific number of times.

Example:

DISPLAY ALL ODD NUMBERSS BETWEEN 1 TO 100002.00 C 1 DO 10 NUM 5 0

0003.00 C NUM DSPLY

0004.00 C ENDDO 2

0005.00 C SETON LR

O/P

1,3,5,7,9


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DOUXX ..ENDDO :

DOUXX (do until loop) this loop will be executed at least once irrespective of whether

the condition is satisfied initially or not because, here the condition is post-tested .

Example:

INITIALIZATION AND INCREMENTATION HAS TO BE EXPLICITLYDONE

0001.00 C Z-ADD 1 NUM 5 0

0002.00 C NUM DOUGT 10

0003.00 C NUM DSPLY

0004.00 C ADD 2 NUM

0005.00 C ENDDO0006.00 C SETON LR

O/P

1,3,5,7,9


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DOWXX ..ENDDO :

DOWXX (do while loop) is similar to DOU loop except that the loop continues

execution as long as the condition is true and terminates once it becomes false. Alsothe condition is per-tested.

Example:

DISPLAY ALL ODD NUMBERSS BETWEEN 1 TO 10

0002.00 C Z-ADD 1 BASIC 2 0

0002.01 C BASIC DOWLE 10

0002.02 C BASIC DSPLY

0002.03 C ADD 2 BASIC


O/P

1,3,5,7,9


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LEAVE :LEAVE statement can only be given inside a loop. It abruptly terminates the loop

execution and transfers the control to the next statement after ENDDO.

ITER :ITER statement can only be given inside any of the loop. It is used to transfer the

control to the beginning of the loop to continue execution.

Example:DISPLAY ALL ODD NUMBERSS EXCEPT 5 ,BETWEEN 1 TO 10

0001.00 C Z-ADD 1 NUM 5 0

0002.00 C NUM DOWLE 10

0003.00 C NUM IFEQ 5

0004.00 C ADD 2 NUM

0005.00 C ITER

0005.01 C* LEAVE

0006.00 C ENDIF


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0007.00 C NUM DSPLY

0008.00 C ADD 2 NUM


O/P

1

3

7

9

NOTE:

In the above example if leave is coded in place of ITER the loop executionterminates once the value of num is equal to 5.hence only 1 and 3 will get displayed.


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Branching operations

TAG & GOTO

TAG is used in accordance with GOTO in a program. Using GOTO we cantransfer the control from one place to another with in a routine.

The place where the control needs to be transferred should be labeled (named)using a TAG statement.

NOTE:

While using TAG only factor1 is coded which contains the label name.

GOTO statement is coded with the name of the label in factor 2.


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Example:

DISPLAY NUMBERS FROM 10 TO 1

0002.00 C Z-ADD10 NUM 500002.01 C CBSI TAG

0003.00 C NUM DSPLY

0004.00 C SUB 1 NUM

0005.00 C NUM IFGE 1

0006.00 C GOTO CBSI0006.01 C* NUM CABGE1 CBSI

0007.00 C ENDIF

0008.00 C SETON LR

O/P

10,9,8,7,6,5,4,3,2,1


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CABXX :CABXX(COMPARE AND BRANCH) command is simply a combination of IF & GOTO

statement.Example:

DISPLAY NUMBERS FROM 10 TO 1

0002.00 C Z-ADD10 NUM 50

0002.01 C CBSI TAG

0003.00 C NUM DSPLY

0004.00 C SUB 1 NUM

0006.01 C NUM CABGE1 CBSI

0008.00 C SETON LR

O/P

10,9,8,7,6,5,4,3,2,1


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Date/Time operations

The time operation accesses the system time of day

Result : Must be of either a 6,12 or 14 digit numeric field (no decimalpositions)

If six-digit numeric field :Time of the day only

If 12-digit numeric field :Time of the day and system date with outcentury.

If 14-digit numeric field: Time of the day and system date with outcentury.


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Example:

DISPLAY SYSTEM DATE/TIME

0000.01 C Z-ADD0 NUM1 120

0001.00 C TIME NUM1


0003.00 C SETON LR


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Call operations

BEGSRENDSR

BEGSRENDSR Is used to code a subroutine with in a program. BEGSR is

required at the beginning of every subroutine. The name of the subroutine ismentioned in factor 1 of BEGSR.

EXSR

EXSR is used to call a subroutine and after the execution of the subroutinecontrol returns back to the next statement after EXSR. The name of thesubroutine is given in factor 2 position.


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Example:

THE MESSAGES WILL BE DISPLAYED IN THE SEQUENCE

BEFORE,INSIDE,AFTER0001.00 C 'BEFORE' DSPLY

0002.00 C EXSR DSPSR

0003.00 C 'AFTER' DSPLY

0004.00 C* RETURN0004.01 C SETON LR

0005.00 C DSPSR BEGSR

0006.00 C 'INSIDE' DSPLY

0007.00 C ENDSR

O/p

DSPLY BEFORE ,DSPLY INSIDE,DSPLY AFTER

NOTE: If the name of the subroutine is changed to *INZSR then, the sequence of themessages would be INSIDE,BEFORE,INSIDE,AFTER.


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CASxx Compared Compared Subroutine

name

HI LO EQ

CASXX . END

This helps us in conditional execution of subroutine. Factor-1 and factor-2 are compared and if the condition satisfied the subroutine

named in the result field is executed.

Example:

HERE ADDSR,SUBSR,MULSRDIVSR WILL BE EXECUTED IF OPT

CONTAINS A.S,M,OR D RESPECTIVELY.0001.00 FDSPSELECT CF E WORKSTN

0002.00 C *IN03 DOWEQ *OFF

0003.00 C EXFMT OPCODE


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0005.00 C OPT CASEQ 'A' ADDSR

0006.00 C OPT CASEQ 'S' SUBSR

0007.00 C OPT CASEQ 'M' MULSR

0008.00 C OPT CASEQ 'D' DIVSR

0009.00 C ENDCS

0010.00 C ENDDO

0011.00 C SETON LR0012.00 C* RETURN

0013.00 C ADDSR BEGSR

0014.00 C NUM1 ADD NUM2 RESULT

0015.00 C ENDSR

0017.00 C SUBSR BEGSR

0018.00 C NUM1 SUB NUM2 RESULT

0019.00 C ENDSR


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0020.00 C MULSR BEGSR

0021.00 C NUM1 MULT NUM2 RESULT

0022.00 C ENDSR0022.01 C DIVSR BEGSR

0022.02 C NUM1 DIV NUM2 RESULT

0022.03 C ENDSR

DSPSELECT_CASXX

0000.40 A R OPCODE

0000.50 A*%%TS SD 20050802 125252 QSECOFR REL-V4R4M0 5769-PW1

0000.60 A CA03(03)

0000.70 A 12 34'B ='0000.80 A 10 34'A ='

0000.90 A 14 34'OPT ='

0001.00 A 16 34'C ='


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0001.10 A NUM1 3S 0B 10 50

0001.20 A NUM2 3S 0B 12 50

0001.30 A RESULT 5S 0O 16 50

0001.40 A OPT 1A I 14 50

CALL :

CODE Factor 1 Factor 2 ResultField

INDICATORS

CALL Called

program name

HI LO EQ

CALL is used to execute another RPG program from inside an RPG program. Theprogram in which had the CALL statement is referred as the parent or a callingprogram and the program being called is termed as child or called program.

CALLED program has to be compiled before compiling a calling program. Becausewhile compiling the calling program it looks for a compiled object of the calledprogram and if it is not found an error occurs .


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Example:

CALLING PROGRAM(THIS PROGRAM CALLSUB PROGRAM WHICH FINDS THE

SUM OF FIRST 100 NATURAL NUMBERS.

0002.00 C 'BEFORE' DSPLY

0003.00 C CALL 'CALLSUB'

0004.00 C 'AFTER' DSPLY

0005.00 C RETRN

CALLSUB (Called program)0000.01 C 1 DO 100 NUM

0000.02 C ADD NUM SUM

0000.04 C ENDDO

0000.05 C SUM DSPLY

0000.06 C RETRN

0000.07 C *INZSR BEGSR

0001.01 C Z-ADD0 SUM 80

0002.00 C Z-ADD0 NUM 30

0003.00 C ENDSR

O/p DSPLY BEFORE, DSPLY 5050,DSPLY AFTER


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PLIST & PARM

When parameters are passed into called program, it should be capable enough toreceive the same. For that reason we code PLIST statement at the top of thecalled program.

*ENTRY Should appear in factor1 of PLIST command followed by PARMs.

Example:*ENTRY PLIST

PARM A

PARM BPARM C

POINTS TO NOTE:

1.The number of parameters passed and receiving should be the same.

2.Their attributes (data type and size) should preferably the same.

3.the order of parameters should be the same.

4.can have different names or same names in called and calling programs.


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Example: PLISTPP_NM

PROGRAM FOR CALCULATION OF SIMPLE INTEREST

0001.00 FDSPARR CF E WORKSTN

0001.01 C LIST1 PLIST

0002.01 C PARM P 5 0

0002.02 C PARM R 4 0

0002.03 C PARM T 2 0

0002.04 C PARM SI 7 0

0003.00 C PARM A 8 0

0004.00 C EXFMT INTEREST

0004.01 C CALL 'PLISTSUB' LIST10004.02 C EXFMT INTEREST

0005.00 C SETON LR


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PLISTSUB_NM(SUBPROGRAM)

0001.00 C *ENTRY PLIST

0002.00 C PARM P1 5 0

0003.01 C PARM R1 4 0

0003.02 C PARM T1 2 0

0003.03 C PARM SI1 7 0

0004.00 C PARM A1 8 0

0004.01 C P1 MULT R1 SI1

0005.00 C T1 MULT SI1 SI1

0006.00 C DIV 100 SI10007.00 C SI1 ADD P1 A1

0008.00 C RETURN


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DSPARR_DSPLAYFILE

0004.20 A R INTEREST

0004.40 A 5 27'SIMPLE INTEREST CALCULATION

0004.70 A 6 27'==========================

0004.90 A 9 10'ENTER PRINICIPLE :'

0005.10 A 11 10'ENTER RATE :'

0005.30 A 13 10'ENTER TIME :'0005.50 A 15 10'SIMPLE INTEREST IS :'

0005.70 A 17 10'AMOUNT IS :'

0005.90 A 20 41'PRESS ENTER TO CONTINUE'

0006.30 A P 5S 0B 9 33

0006.40 A R 4S 0B 11 33

0006.50 A T 2S 0B 13 33

0006.60 A SI 7S 0O 15 33

0006.70 A A 8S 0O 17 33


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File operations

READ : The READ operation reads the record from a file.WRITE : The WRITE operation writes a new record into the file.

READE :The READE operation retrieves the next sequence record from a file.

READP : READP (read prior) operation reads the prior record from a file.

READPD :The READPF operation is just a combination of READE and READP.

READC : The READC operation can be used only with an externally describedworkstation file to obtain the next changed record in a sub file.

SETGT & SETLL : SETGT & SETLL only positions the record pointer and doesnot read the records.

UPDAT : The UPDAT operation is modify the records of an update disk file.(U in file type i.e., position 15 of F-Spec).


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PROGRAM FOR FILE READ

FILEREAD_RPG0001.00 FEMPMASTER IF E K DISK

0002.00 FDSPLYFILE CF E WORKSTN


0005.00 C DOW *IN10=*OFF

0006.00 C EXFMT READING

0007.00 C READ EMPRECFMT 100008.00 C ENDDO

0009.00 C SETON LR

EMPMASTER_PF

0001.00 A R EMPRECFMT0002.00 A EMPNUMBER 5

0003.00 A EMPNAME 10

0004.00 A EMPSALARY 10 2

0005.00 A K EMPNUMBER


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DSPLYFILE_DISPLAY FILE0001.60 A R READING

0001.90 A CA03(03)0002.00 A 5 33'KARISHMA S/W LTD'

0002.10 A DSPATR(UL)

0002.20 A DSPATR(HI)

0002.30 A 8 38'EMPNO:'

0002.40 A 10 37'EMPNAME:'

0002.50 A 12 32' '

0002.60 A 12 29' '

0002.70 A 12 27' '

0002.80 A EMPNUMBER R B 8 46REFFLD(EMPRECFMT/EMPNUMBER

0002.90 A MINDADB/EMPMASTER)

0003.00 A EMPNAME R B 10 46REFFLD(EMPRECFMT/EMPNAME0003.10 A MINDADB/EMPMASTER)


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IntroductionData structures allow to define an area of space within memory to store

individual elements of data.

Purpose: Subdividing fields into subfields

Restructure records into different layouts

Change field data types

Define character fields longer than 256 bytes To add second dimension to arrays

Data structures can also be defined externally.

TYPES: Simple Data Structure

External data structure Data Area Data structure

File information data structure

Program status data structure


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Simple Data Structure

To define data structure specify DS in 24-25.

Follow the definition with sub field definitions.

From to positions indicate the sub fields positions on IPD prompt.

Examples: DISPLAY SYSTEM DATE AND TIME & YEAR

0001.00 DDATE1 DS

0002.00 DDD 1 2

0003.00 DMM 3 4

0004.00 DYYYY 5 8

0005.00 C MOVEL UDATE DATE1

0005.01 C DD DSPLY0005.02 C MM DSPLY

0005.03 C YYYY DSPLY

0006.00 C DATE1 DSPLY

0007.00 C SETON LR


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External data structure

READ DATA FROM A DATA BASE FILE USING EXTERNAL DS.

External Data structures

FFLTFILE IF F 112 DISK

FEMPPF UF A E DISK

DEMPFILE E DS EXTNAME(EMPPF)

DID 1 6

DNAME 7 17

DSTATUS 18 19

C *LOVAL SETLL FLTFILE

C READ FLTFILE 90

C DOW *IN90 = *OFF

C EVAL EMPFILE = FLTFILE

C

C WRITE EREC 90

C ENDDO

C SETON LR


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File information data structure

FMaintCust CF E Workstn INFDS(DSDisplay)

DSDisplay DS

D FileName *File

DFileOpen 9 9

DFileeof 10 10

DMsgId 46 52

DSCRSize *SIZE

DKeyPress 369 369

DCursorloc 370 371B 0

INFDS keyword is specified in the F-spec against the file declaration.


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File Information Data Structure:*FILE File Name

*RECORDExternal file RECORD FORMAT

Program file RecordID

*OPCODE

*STATUS Error Code

*ROUTINE Name of the routine where error occurred.

File Status codes00000 - No Error

00013 - Sub file Full

01021 - Duplicate Key Not allowed

01041 - Array/Table Sequence error

01211 - I/O operation to closed file

01215 - OPEN issued to file already open01218 - Unable to allocate Record

01221 - Update without prior read

01241 - Record number not found

01331 - Wait time exceeded for read from work station file.


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Program Status Data structureDS.PSSR_DS

0002.00 IDS1 SDS

0003.01 I *STATUS ERR

0003.04 C Z-ADD100 NUM1 30

0029.00 C Z-ADD0 NUM2 30

0029.01 C NUM1 DIV NUM2 NUM3 300029.02 C RETRN

0029.03 C *PSSR BEGSR

0033.00 C ERR IFEQ 102

0033.01 C 'ZERO DIV'DSPLY

0033.02 C ENDIF

0033.03 C* MOVE 'CANCLE' RET 6

0045.04 C ENDSR


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O/P

DSPLY ZERO DIV

DS.PSSR 2901 tried to divide by zero (factor 2)

Program Status codes

00121- Invalid array index

00202 Called program failed

00211- Called program not found

00231 Called program Halt indicator On

00333- Error on DSPLY operation

00414- Not authorized to use data area

00415 Not authorized to update data area

00431- Data area previously locked00907- Decimal data error

09999 System program exception error


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Program for Data Areas

AUTOMATIC GENARATION OF VEHICAL REGISTRATION NUMBER

0001.00 FDSPARR CF E WORKSTN

0001.02 E LETTER 1 26 1

0002.00 IDS1 UDS

0002.01 I 1 2 STATE

0003.01 I 3 40AREA

0003.02 I 5 5 ALPHA

0003.03 I 6 90SRLNO

0007.00 C *NAMVAR DEFN AREA0 9

0008.00 C *IN03 DOWEQ*OFF

0009.00 C *LOCK IN AREA0

0010.00 C MOVE AREA0 DS1


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0011.00 C SRLNO IFEQ 9999

0012.00 C ALPHA IFEQ 'Z'

0013.00 C EXSR ADARA

0014.00 C ELSE

0015.00 C EXSR ADALPA

0016.00 C ENDIF

0017.00 C ELSE0018.00 C EXSR ADSLNO

0019.00 C ENDIF

0020.00 C MOVE DS1 FLD001

0021.00 C EXFMTVEHREG

0022.00 C EXSR UPDSR

0023.00 C ENDDO

0024.00 C SETON LR


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0025.00 C* ERRRTN BEGSR

0025.01 C* RETRN

0026.00 C ADARA BEGSR

0027.00 C ADD 1 AREA

0028.00 C MOVE 'A' ALPHA

0029.00 C Z-ADD1 SRLNO

0030.00 C ENDSR0031.00 C ADALPA BEGSR

0032.00 C 1 DO 26 I 20

0033.00 C ALPHA IFEQ LETTER,I

0034.00 C LEAVE

0035.00 C ENDIF

0036.00 C ENDDO

0037.00 C ADD 1 I

0038.00 C MOVE LETTER,I ALPHA


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0040.00 C Z-ADD1 SRLNO

0041.00 C ENDSR

0043.00 C ADSLNO BEGSR

0044.00 C ADD 1 SRLNO

0045.00 C ENDSR

0045.01 C UPDSR BEGSR

0045.02 C MOVE DS1 AREA0

0045.03 C *LOCK OUT AREA0

0045.04 C ENDSR V

0046.00 **

0047.00 A

0048.00 B ------------z


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Display Data Area

Data area . . . . . . . : AREA0

Library . . . . . . . : MINDADB

Type . . . . . . . . . : *CHAR

Length . . . . . . . . : 9

Value 'AP01A0001'

DSPARR_DISPALYFILE0002.40 A R VEHREG

0002.50 A*%%TS SD 20050801 182655 QSECOFR REL-V4R4M0 5769-PW1

0002.60 A CA03(03)

0002.70 A 8 15'AUTOMATIC GENERATION OF VE

0002.80 A GISTRATION NUMBER'

0003.50 A 13 20'NEW VEHICAL REGISTRATON NUM:

0003.90 A FLD001 12A O 13 60

0004.00 A 18 56'F3 = EXIT'


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Structure of PSDS16-20 Previous status code

21-28 RPG Source sequence number40-46 Exception Error ID MCH or CPF

201-208 Name of the file last used

244-253 Job Name

254-263 User name

264-269 Job Number

276-281 --System Date in Udate Format

288-293 Date Compiled

304-333 Source file/library/member


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Subfiles

1. A subfile is a series of similar records that can be displayed simultaneously on the

screen.

2. When you load data to a subfile data remains in main memory until subfile iswritten on to the screen.

3.When subfile is written on to the screen data is passed on to the workstationcontroller.

4. Controller assumes responsibility for handling subfile data on screen until control isreturned to the program.

5. A subfile can hold a maximum of 9999 records.

6. At a time 24 subfiles can be active.


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Components of a subfile

Two record formats are requiredSFL - Subfile record format and

SFLCTL - Subfile Control Record format.

The Subfile Record format holds the actual data and is similar to the database file.

The Subfile Control Record format Describes the headings for the fields andcontrols the subfile size, Display, Number of records and specifies how data isretrieved and what is to be done on data in the subfile on various events.


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SUBFILE TYPES

Load All Subfile

Expanded Load

Single Page Load


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Load All Subfile All records are loaded at once.

Maximum 9999 records can be loaded.

Applicable for files with fewer number of records.

ROLLUP and ROLLDOWN operations are automatically handled by theprogram.

Control returns to the program once the user moves past the last record in thesubfile.


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Expanded load

Loads enough records to fill first screen.

Rollup key impression brings control to the program.

First screen records stay in the subfile and new records are appended each timerollup is pressed.

Roll down automatically handled by subfile.


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Page at a time subfile

Stores only page worth of records.

Program handles both rollup and roll down keys.

Subfile is cleared and new page of records are loaded on each key impression afterclearing the subfile.

Rollup/page down load next set of records.

Roll down/page up previous set of records are loaded .

Subfile preferred for database having large set of records works without impactingperformance.


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Key WordsSFLCTL

Defines Subfile control record format

Links subfile record format with Subfile format

One subfile format maps to one and only one subfile control format and

vice versa

SFLSIZ

Specifies size of the subfile. No of records that subfile can hold.Can be

hard coded or passed as a hidden field ,S type, 0 Decimals and 5 digits long.

SFLPAG

Specifies number of records that appear on a single screen and must be less

than or equal to SFLSIZ


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SFLDSPCTL and SFLCTL

Normally conditioned with indicators to display control format or the subfile. Empty subfile- (SFLCTL) cannot be displayed so indicator is seton when subfile is filled

or required to be displayed.

Having indicator for SFLDSPCTL is optional.

SFLCLR

Normally SFLCLR will have the negative conditioning indicator that is given for SFLCTLand SFLDSPCTL.

When indicator is set on it will clear the records in the subfile.


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Program for Load all sub file0001.00 FEXPPF IF E DISK

0002.00 FLOADDSP CF E WORKSTN

0003.00 F SFILE(DATA1 : RRN)

0004.00 DRRN S 4 0

0005.03 ** CLEAR SFL

0005.05 C SETON 1020400007.00 C WRITE HEADING1

0007.01 C SETOFF 40

0008.01 C Z-ADD 1 RRN 4 0

0008.02 ** LOADING DATA

0008.03 C READ PFREC03 90

0009.00 C DOW *IN90=*OFF

0009.01 C WRITE DATA1


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0011.00 C ADD 1 RRN

0013.00 C READ PFREC03 90

0013.01 C ENDDO

0014.01 ** DSPLY SFL

0014.02 C DOW *IN03=*OFF

0014.03 C SETON 10200014.04 C WRITE FOOTING

0016.00 C EXFMT HEADING1

0017.00 C SETOFF 1020

0017.01 C ENDDO

0017.02 **

0018.00 C SETON LR


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EXPPF_LOADALL

0000.01 UNIQUE

0001.00 A R PFREC03

0002.00 A PFEMNO 7 COLHDG('EMPLOYEE NUMBER')

0003.00 A PFEMNA 25 COLHDG('EMPLOYEE NAME')

0004.00 A PFADD1 10 COLHDG('ADDRESS1')

0005.00 A PFADD2 10 COLHDG('ADDRESS2')

0006.00 A K PFEMNO

LOADDSP_DISPALYFILE

0000.40 A R DATA1 SFL

0000.60 A PFEMNO R O 13 17REFFLD(PFREC03/PFEMNO MINDADB

0000.70 A PFEMNA R O 13 27REFFLD(PFREC03/PFEMNA MINDADB

0000.80 A PFADD1 R O 13 53REFFLD(PFREC03/PFADD1 MINDADB


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0000.90 A R HEADING1 SFLCTL(DATA1)

0001.10 A CA03(03)

0001.20 A 10 SFLDSP

0001.30 A 20 SFLDSPCTL

0001.40 A 30 SFLINZ

0001.50 A 40 SFLCLR0001.60 A 50 SFLEND(*MORE)

0001.70 A SFLSIZ(0050)

0001.80 A SFLPAG(0005)

0001.90 A 6 36'EMPDETAILS'

0003.10 A 11 19'NUMBER'

0003.30 A 11 37'NAME'

0003.50 A 11 54'ADDRESS1'


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Program for Expanded Load0001.00 FEXPPF IF E DISK

0002.00 FEXPDSP CF E WORKSTN

0003.00 F RRN KSFILE SFLREC


0004.02 C*SFL CLEAR

0005.00 C SETON 40

0006.00 C WRITESFLCTL

0007.00 C SETOF 40

0007.01 C*

0007.02 C Z-ADD1 RRN 40

0007.04 C STR TAG

0007.05 C SETOF 20

0007.06 C Z-ADD1 RRNCT 40

0009.04 C**


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0009.05 C RRNCT DO 10

0012.00 C READ EXPPF 33

0013.00 C *IN33 IFEQ *ON

0014.00 C MOVE *ON *IN50 END

0015.00 C ELSE

0016.00 C RRN IFLT 9999

0017.00 C WRITESFLREC

0017.01 C ADD 1 RRN

0017.02 C ADD 1 RRNCT

0017.03 C ENDIF

0018.00 C ENDIF

0020.00 C ENDDO

0022.03 C SETON 20

0023.00 C EXFMTSFLCTL


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0023.01 C* PAGE DOWN

0024.00 C *IN35 IFEQ *ON

0025.00 C GOTO STR

0026.00 C ENDIF

0026.01 C ENDDO

0028.00 C SETON LR

EXPDSP_DISPLAYFILE

0000.40 A CF03(03)

0000.50 A R SFLREC SFL

0000.70 A PFEMNO R O 6 4REFFLD(PFREC03/PFEMNO MINDA

0000.90 A PFEMNA R O 6 14REFFLD(PFREC03/PFEMNA MINDA

0001.10 A PFADD1 R O 6 40REFFLD(PFREC03/PFADD1 MINDA



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0001.50 A R SFLCTL SFLCTL(SFLREC)

0001.70 A ROLLUP(35)

0001.80 A 20 SFLDSP


0002.00 A 40 SFLCLR

0002.10 A 50 SFLEND(*MORE)

0002.20 A SFLSIZ(0011)

0002.30 A SFLPAG(0010)

0002.40 A 1 29'EXPANDING SUBFILE '

0001.90 A 6 36'EMPDETAILS'

0003.10 A 11 19'NUMBER'

0003.30 A 11 37'NAME'

0003.50 A 11 54'ADDRESS1'

P f Si l l d


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Program for Single page load

0001.00 FPAGEPF IF E DISK

0002.00 FPAGEDSP CF E WORKSTN

0003.00 F RRN KSFILE SFLREC

0003.02 I* 10 C CRSIZE

0003.03 C Z-ADD10 CRSIZE 40

0003.04 C EXSR CLE

0003.05 C EXSR LOA


0003.07 C SETON 10

0003.08 C WRITEFOOT

0003.09 C EXFMTSFLCTL


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0007.01 C* PAGE DOWN KEY PRESSED

0007.02 C *IN22 IFEQ *ON

0007.03 C EXSR PGD

0007.04 C ENDIF

0007.05 C* PAGE UP KEY PRESSED

0007.07 C *IN23 IFEQ *ON0007.08 C EXSR PUP

0007.09 C ENDIF

0007.10 C ENDDO

0007.11 C SETOF 10

0007.12 C SETON LR


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0007.13 C* =====================PAGE DOWN==================

0007.14 C PGD BEGSR

0007.15 C LKEY SETGTPAGEPF

0007.16 C READ PAGEPF 31

0007.17 C *IN31 IFEQ *OFF

0007.18 C LKEY SETGTPAGEPF

0007.19 C EXSR CLE0007.20 C EXSR LOA

0007.21 C ENDIF

0007.22 C ENDSR

0007.23 C* =====================PAGE UP=======================

0007.24 C PUP BEGSR

0007.25 C FKEY SETLLPAGEPF



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0007.29 C Z-ADDCRSIZE SRCNT 20

0007.31 C DO CRSIZE

0007.32 C READPPAGEPF 31

0007.33 C MOVE PFEMNO FKEY

0007.34 C *IN31 IFEQ *ON

0007.35 C ENDIF

0007.36 C ENDDO

0007.37 C EXSR CLE


0007.40 C EXSR LOA

0007.41 C ENDIF

0007.42 C ENDSR


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0008.00 C* ===================LOADING DATA===========

0009.00 C LOA BEGSR

0009.01 C Z-ADD1 RRN 40

0009.02 C SETOF 10



0009.06 C MOVE PFEMNO FKEY 700009.07 C ENDIF

0009.10 C RRN DOWLECRSIZE

0009.11 C *IN31 ANDNE*ON

0009.13 C WRITESFLREC

0009.14 C MOVE PFEMNO LKEY 70

0009.15 C ADD 1 RRN


0009.17 C ENDDO


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0009.19 C *IN31 IFEQ *ON

0009.20 C SETON 50

0009.21 C ELSE

0009.22 C SETOF 50

0009.23 C ENDIF

0009.24 C ENDSR

0009.25 C*================== CLEAR SCREEN =======================

0009.26 C CLE BEGSR

0010.00 C SETON 40

0011.00 C WRITESFLCTL

0012.00 C SETOF 40

0013.00 C ENDSR


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PAGEPF_PHYSICALFILE:

SAME AS EXPANDED LOAD

PPAGEDSP_DISPLAYFILE

0000.40 A CF03(03)

0000.50 A R SFLREC SFL

0000.70 A PFEMNO R O 7 3REFFLD(PFREC03/PFEMNO MINDA

0000.90 A PFEMNA R O 7 18REFFLD(PFREC03/PFEMNA MINDA0001.10 A PFADD1 R O 7 44REFFLD(PFREC03/PFADD1 MINDA


0001.50 A R SFLCTL SFLCTL(SFLREC)


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0001.70 A PAGEDOWN(22)

0001.80 A PAGEUP(23)

0001.90 A 10 SFLDSP


0002.10 A 40 SFLCLR

0002.20 A 50 SFLEND(*MORE)

0002.30 A SFLSIZ(0011)

0002.40 A SFLPAG(0010)


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Introduction

Arrays and tables allow program to organize groups of related data elements for easy

retrieval.

Array consists of series of elements with like characteristics (data type and size).

Here every element in an array is accessed by means of an index which indicates the

relative position of the element from the beginning of the array. The numbering startsfrom 1.

Declaration of Arrays


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Declaration of Arrays

Arrays are declared on the E-spec, by specifying the array name, entries per record,

entries per table and length of an entry.

Position Description

6 Form Type (E)

27-32 & 46-51 Array Name

33-35 Entries per record36-39 Entries per Array or Table

40-42 & 52-54 Length of Entry

43 and 55 Data Format

44 and 56 Decimal positions

Types of Arrays


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Types of Arrays

Compile time Array

Pre runtime Array

Runtime Array


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Compile time Array

Compile time array elements are facilitated at the end of the code.

Pre runtime array elements are facilitated before the execution of the program.

Run time array elements are facilitated from the data base. They are loaded intoarray during runtime.

Pre runtime Array

Runtime Array

P f il ti


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Program for compile time array0000.01 ** COMPILE TIME ARRAY USING MULTIDIMENSION ARRAY

0001.00 DABC S 15A Dim(12) PERRCD(1) CTDATA

0002.00 DI S 4S 0 INZ(1)

0003.00 C I DOWLE12

0004.00 C ABC,I DSPLY

0006.00 C XYZ,I DSPLY

0007.00 C ADD 1 I

0008.00 C ENDDO

0009.00 C SETON LR

0010.00 **

0011.00 JANUARY 31

0012.00 FEBRUARY 28


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0013.00 MARCH 31

0014.00 APRIL 30

0015.00 MAY 31

0016.00 JUNE 30

0017.00 JULY 30

0018.00 AUGUST 31

0019.00 SEPTEMBER 30

0020.00 OCTOBER 31

0021.00 NOVEMBER 30

0022.00 DECEMBER 31

P f ti ti


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Program for preruntime time array0001.00 FPF1 IT F 30 DISK

0002.00 DARR1 S 30 DIM(10) FROMFILE(PF1)

0003.00 DI S 4 0 INZ(1)

0004.00 C DO 10

0005.00 C ARR1(I) DSPLY

0006.00 C EVAL I = I + 10007.00 C ENDDO

0008.00 C SETON LR

String operations


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String operationsCAT

The CAT operation concatenates the character strings specified in factor2 to theend of the character specified in factor1 and places it in the result field.

SCAN

The SCAN operation scans a character string (base string) contained in factor 2for a sub string (compare string) contained in factor1. If the string is found then theposition where it is found is placed in the result field.

XLATE

XLATE (translate) is used to find for a sub string in Fator2 and replaces it withanother string (Factor1) and places the resulting string into the result field.

Factor 1 must contain the find string followed by a colon followed by the replacestring. Example ABCDE:abcde

SUBST


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SUBST

The SUBST operation returns a sub string from factor2, starting at the locationspecified in factor 2 for the length specified in factor 1 and places this sub string inthe result field.

CHECK

The CHECK operation checks a mismatched character string (base string)contained in factor 2 for a sub string (compare string) contained in factor1. If thestring is found then the position where it is found is placed in the result field.

Program for string opcodes


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Program for string opcodes0000.01 **STRING CONCAT

0000.02 C MOVE 'ANIL' S1 4

0000.03 C MOVE 'KUMAR' T1 5

0001.00 C S1 CAT T1:1 P1 10

0002.00 C P1 DSPLY

0002.03 **SCAN METHOD

0002.04 C 'ABC' SCAN 'DEFABC' NUM 100 90

0002.05 C NUM DSPLY

0002.06 **CHECK

0002.07 C 'ABC' CHECK'DEFABC' NUM 100 90

0002.08 C NUM DSPLY


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0002.09 **SUBSTRING

0002.10 C Z-ADD4 S 20

0002.11 C MOVEL'ABCDEF' S2 10

0002.12 C 2 SUBSTS2:S P2 10

0002.13 C P2 DSPLY

0002.14 **XLATE STRING

0002.15 C MOVEL'999B9999'NUM1 8

0002.16 C 'B':'-' XLATENUM1 FLD1 8

0002.17 C FLD1 DSPLY

0003.00 C SETON LR


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O/p

DSPLY ANIL KUMAR

DSPLY 4

DSPLY 1

DSPLY DE

DSPLY 999-9999

C-spec---prompt

pmt SeqNbr Lvl N01 N02N03 Factor 1 OpCode Factor 2 Result

C 0002.04 'ABC' SCAN 'DEFABC' NUM

Len Dec H/N/P Hi Lo Eq Comment

10 0 90


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OUTPUT SPECIFICATION

O-Spec


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O-Spec

Describes the record and the format of fields in a program-described output file and

when the record is to be written.

Optional for an externally described file.

Divided into two categories:

Record identification and control (positions 7 through 51),

Field description and control (positions 21 through 80).

Output specification layout Externally Described files


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Output specification layout Externally Described files

1. Record Identifier specifications

Columns Descriptions

1-5 Sequence number

6 O

7-15 Record Name

16-18 Logical Relationship AND,OR

17 Type of record to write:

D Detail

E Exception (EXCEPT)

H Detail (header)

T Total

Record Identifier specifications Continued 2


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18 Release Record after output : R or Blank

18-20 Record Addition : ADD, DEL

21-29 Output Conditioning indicators:Blank,01-99,KA-KN,KP-KY,L1-L9,H1-H9,U1-U8,MR,LR,RT,1P

30-39 EXCEPT name

40-80 (Blank)

81-100 Comments

Record Identifier specifications Continued .. 2

2 Field Description Specifications


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1-5 Sequence number

6 O

7-20 (BLANK)

21-29 Output Conditioning indicators: Blank,10-99,KA-KN,KP-KY,L1-L9,H1-H9,U1-U8,MR,LR,RT,1P

30-43 Field Name or *ALL

44 (BLANK)

45 Result field contents after writing record : Blank or B

46-80 (BLANK)

81-100 Comments

2. Field Description Specifications

Program for O-spec


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Program for O spec0001.00 FPFNAME IP E K DISK

0002.00 FQSYSPRT O F 80 OF PRINTER0003.00 OQSYSPRT H 2 2 2 1P

0003.02 O UDATE Y 70

0004.00 O 40 'ABC COMPANY'

0005.00 O*

0005.02 OQSYSPRT H 2 1P

0005.03 O 40 '==========='


0007.00 O 20 'EMPLOYEE DETAILS'


0007.02 O 20 '================'

0007.03 O* '


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0009.00 O H 2 1P

0010.00 O 35 'EMP NUMBER'0011.01 O 53 'EMPLOYEE NAME'

0012.00 O 73 'EMPLOYEE SALARY'


0012.02 O 47 '========================'

0012.03 O 71 '========================

0012.04 O 74 '==='

0012.05 O*


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0012.06 OQSYSPRT D 2 N1P

0013.00 O NUMBER 360013.01 O* SALARY 68

0013.02 O* NAMERY 69 ' . '

0014.00 O NAME 68

0015.00 O SALARY 69 ' . '

0016.00 O 71 'RS'

PFNAME_OSPEC

0001.00 A R RECNAME

0002.00 A NUMBER 10

0003.00 A NAME 30

0004.00 A SALARY 10 2

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