Binding Modules into a Program

Binding Modules into a

Program

 

 

 

 

Binding

is

the

process of

creating

a runnable ILE program by combini

more

modules and optional service programs, and resolving symbols passed

between them.

The

system

code that

does this combining and resolving

binder

on

the

AS/400

system.

 

 

As part of the binding process, a procedure must be identified as

dure, programor entry procedure . When a program is called, the program ent procedure receives the parameters from the command line and is given control for the program. The user's code associated with the progra dure is the user entry procedure.

If an

ILE RPG module contains a main

procedure,

it implicitly also co

program

entry

procedure.

Therefore,

any ILE RPG

module may be speci

entry

module

as long as

it is not a

NOMAIN module.

Figure 40 gives an idea of the internal structure of a program obje program object TRPT, which was created by binding the two modules TR and TRANSSVC. TRANSRPT is the entry module.

*PGM ( TRPT)

TRANSRPT Module

Program Entry

Procedure

Main Procedure

TRANSSVC Module

Main Source Section

Trans_Inc

Prod_Name

Figure 40. Structure of Program TRPT

Within a bound object, procedures can interrelate using static proce These bound calls are faster than external calls. Therefore, an appl sisting of a single bound program with many bound calls should perform a similar application consisting of separate programs with many externa cation calls.

Chapter 7. Creating a Program with the CRTRPGMOD and CRTPGM Commands81

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IBM AS/400 manual Binding Modules into a Program, Binder
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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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