Using SPECIAL Files

RRead a record and place it in the area defined by parameter.

WThe ILE RPG program has placed a record in the area defined by the area parameter; the record is to be out.

DDelete the record.

UThe record is an update of the last record read.

Status

The

status parameter is a one-position character field

that in

 

status

of the user-written routine

when

control

is

returned

to

 

RPG

program. Status must contain one

of

the

following

return

value

 

when

the user-written

routine returns control

to

the

ILE

RPG

pro

 

Return

Value

Description

 

 

 

 

 

 

 

 

 

0

 

Normal return.

The requested

action

was

processed.

 

1The input file is at end of file, and no record has returned. If the file is an output file, this return error.

2The requested action was not processed; error conditio exists.

Error

The error parameter is a five-digit zoned numeric field with

 

positions. If the user-written routine detects an error, the

 

contains

an

indication

or

value representing the type of error.

 

is

placed

in

the first

five positions of location *RECORD in th

 

when

the

status

parameter contains 2.

Area

The

area

parameter is a character field whose length is equ

 

record

length

associated

with the SPECIAL file. This field is

 

pass the

record

to

or

receive the record from the ILE RPG

You can add additional parameters to the RPG-created parameter list. keyword PLIST(parameter list ) nameon the file description specifications for SPECIAL file. See Figure 163 on page 329. Then use the PLIST operation in calculation specifications to define the additional parameters.

The user-written routine, specified by the keyword PGMNAME of the file specifications for the SPECIAL file, must contain an entry parameter list includes both the RPG-created parameters and the user-specified parame

If

the

SPECIAL file

is specified as

a primary

file, the

user-specifi

must be initialized before the

first

primary

read.

You

can

initializ

with

a

factor 2 entry on the

PARM

statements

or

by

the

specification

time array or an array element

as

a

parameter.

 

 

 

 

Table

27

on page 329

shows the

file

operation

codes

that

are

valid fo

file.

 

 

 

 

 

 

 

 

 

 

328 ILE RPG for AS/400 Programmer's Guide

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IBM AS/400 manual Status, Description, Error
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AS/400 specifications

The IBM AS/400, now known as the IBM iSeries, is a midrange computer system that has been a cornerstone of enterprise computing since its introduction in 1988. Designed to provide a robust platform for business applications, the AS/400 is celebrated for its reliability, scalability, and integrated database capabilities.

One of the key features of the AS/400 is its Integrated Operating Environment, which blends hardware and software resources seamlessly. This integration allows businesses to execute diverse workloads, ranging from traditional applications to modern web-based services, all on a single platform. The operating system, OS/400 (now IBM i), offers a rich set of APIs and tools for developers, simplifying application development and management.

Another standout characteristic of the AS/400 is its built-in database, DB2 for i. This powerful relational database management system allows for efficient data handling and provides advanced features such as support for SQL, XML, and JSON, making it easier for businesses to manage their data and integrate it with other systems. The database's tight integration with the operating system enables high performance and security.

In terms of scalability, the AS/400 can accommodate small businesses as well as large enterprises, with the ability to support hundreds of users simultaneously. Its architecture allows for easy upgrades in hardware, meaning that organizations can scale their systems without replacing the entire infrastructure.

Security is another critical attribute of the AS/400. With a sophisticated security model, it offers built-in user authentication, access control, encryption, and auditing capabilities to protect data and applications from unauthorized access.

The AS/400 also supports multiple programming languages, including RPG, COBOL, Java, and PHP, giving organizations the flexibility to choose the development tools that best fit their needs. This diversity helps maintain legacy applications while also developing new ones that leverage modern technologies.

Moreover, the platform supports both traditional green-screen interfaces and modern graphical user interfaces, allowing organizations to transition smoothly into contemporary user experience paradigms.

Overall, the IBM AS/400 stands out as a resilient, flexible, and secure computing platform that enables organizations to effectively manage their business operations, streamline processes, and adapt to changing market demands. Its unique combination of integrated features and capabilities ensures that it remains relevant in today's fast-paced technology landscape.
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