ILE Program Using CRTBNDRPG

Example of ILE Program

Using

CRTBNDRPG

 

 

 

 

 

 

Figure 7

shows

the

run-time view of

an

application in which an

ILE CL pr

calls

an

ILE

 

RPG program

that is bound

to

a supplied service

program.

cation

runs

in

the

named

activation

group

XYZ.

 

Job

XYZ Activation Group

*PGM(X)

ILE CL

*PGM(Y)

ILE RPG

*SRVPGM(Z)

Supplied Service

Program

Figure 7. ILE Program Using CRTBNDRPG

Effect of ILE

The following deals with the effects of ILE on the way your program

Program call The system automatically creates the activation group if it already exist, when the application starts.

The application can contain dynamic program calls or static p dure calls. Procedures within bound programs call each othe using static calls. Procedures call ILE and OPM programs by using dynamic calls.

Data

The

lifetime

of

a

program's

storage

is

the

same

as

the

l

 

the activation group. Storage remains active

until

the

activ

 

group

is

deleted.

 

 

 

 

 

 

 

 

 

 

 

The

ILE

RPG

run

time

manages

data so that

the

semantics

o

 

ending

programs

and

reinitializing the

data

are

the

same

a

 

OPM

RPG,

although

the

actual

storage

is

not

deleted

as it

 

when

 

an

OPM

RPG

program ended. Data

is

reinitialized

if

th

 

vious call to the procedure ended

with

LR

on,

or

ended

a

 

mally.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Program data that is identified as exported or imported keywords EXPORT and IMPORT respectively) is external to the individual modules. It is known among the modules that are b into a program.

Files

By default,

file

processing

(including

opening, sharing, over

 

and commitment control) by the

system is scoped to the act

 

group level.

You

cannot share

files at

the data management

26 ILE RPG for AS/400 Programmer's Guide

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IBM AS/400 ILE Program Using Crtbndrpg Example of ILE Program, Shows Run-time view Application in which an ILE CL pr Calls
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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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