IBM AS/400 manual Using Externally Described WORKSTN Files, field, Subfile Display

Using Externally Described WORKSTN Files

‡				—
	Customer Name Search
	Search Code _______
	Number Name	Address	City	State

XXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

XXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XX

ˆXXXX

XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX

XXXXXXXXXXXXXXXXXXXX

XX

˜

Figure

166.

Subfile Display

To use

a

subfile

for

a display device file in an

RPG

program,

you m

SFILE

keyword

on

a

file

description

specification

for

the

WORKSTN

file.

of

the SFILE

keyword

isrecordSFILE( format :RECNOname

field

name).

The

WORKSTN

file

must

be

an

externally-described file (E

in

position 22).

You

must

specify

for

the

SFILE

keyword

the

name

of

the

subfile

reco

the control-record format) and the

name

of

the

field

that

contains

the

number

to

be

used

in

processing

the

subfile.

In

an

RPG

program,

relative

record

number

processing

is

defined

as

pa

SFILE

definition.

The

SFILE definition

implies

a

full-procedural

update

fil

for the subfile. Therefore, the file operations that are valid for

dependent	on	the definition	of the	main WORKSTN file. That is,	the WORK
file can	be	defined as a	primary	file or a full-procedural	file.

Use the CHAIN, READC, UPDATE, or WRITE operation codes with the subfile record format to transfer data between the program and the subfile. WRITE, or EXFMT operation codes with the subfile control-record format t data between the program and the display device or to process subf ations.

Subfile processing			follows	the	rules for relative-record-number processing.
RPG	program places the relative-record number of any record retrieved
READC	operation into		the field		named		in	the second position of the SFIL
keyword. This field is also					used	to		specify the record number that
uses	for	WRITE operation		to	the subfile or for output operations tha
RECNO	field name specified for the						SFILE keyword		must be	defined	as
with	zero	decimal	positions.		The	field		must have	enough	positions	to co

largest record number for the file. (See the DDSSFLSIZ keyword in the Reference.) The WRITE operation code and the ADD specification on the

336 ILE RPG for AS/400 Programmer's Guide