Binding Modules into a Program

9. Once

all

the

imports

have

been

resolved,

the binding

process

complet

the program object is created.

 

 

 

 

 

 

 

 

 

 

Note: If

you have

specified

that

a

variable

or

procedure

is

to

be

the

EXPORT

keyword),

it

is

possible that

the

variable

or

procedu

will be identical to a

variable

or

procedure

in

another procedur

bound

program

object. In

this case,

the

results

may not

be

as

See ILE

Concepts for

information

on

how

to

handle

this situation.

 

Binding

Multiple

Modules

 

 

 

 

 

 

This

example

shows

you

how

to use the CRTPGM command

to

bind two

ILE R

modules

into

a program

TRPT.

In this program, the following occurs:

 

¹ The

module

TRANSRPT

reads

each transaction record

from

a file

TRNSDTA.

¹It then calls procedure Trans_Inc and Proc_Name in module TRANSSVC usin

bound calls within expressions.

¹Trans_Inc calculates the income pertaining to each transaction and re

value to the caller

¹

Proc_Name

determines the

product

name

and

returns

it

¹

TRANSRPT then prints the transaction record.

 

 

Source

for

TRANSRPT,

TRANSSVC, and TRNSDTA

is

shown

in Figure 38 on

page 79,

Figure 36

on page 76

and Figure 39 on

page 80

respectively.

1. First create the module TRANSRPT. Type:

CRTRPGMOD MODULE(MYLIB/TRANSRPT)

2. Then create module TRANSSVC by typing:

CRTRPGMOD MODULE(MYLIB/TRANSSVC)

3. To create the program object, type:

CRTPGM PGM(MYLIB/TRPT) MODULE(TRANSRPT TRANSSVC)

ENTMOD(*FIRST) ACTGRP(TRPT)

The

CRTPGM

command

creates

a

program object TRPT in the library

MYLIB.

Note

that

 

TRANSRPT

is

listed

first in the MODULE parameter.

ENTMOD(*FIRST)

will find the first module

 

with a program entry procedure. Since only

modules has

a program entry

procedure, they can be entered

in eithe

The

program

TRPT

will

run in

 

the named activation group TRPT. The

program

in a named group to ensure

that no other programs can affect

its res

Figure 41

on page 85

shows

an output file created when TRPT

is

run.

84 ILE RPG for AS/400 Programmer's Guide

Page 107 Page 109
Page 108
Image 108
IBM AS/400 manual Export, Concepts for, Modules, Trpt, Mylib
Page 107 Page 109

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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