Sample Service Program

Updating the Service

Program

 

 

 

 

 

 

 

 

Because of the binder language,

the

service program

could be update

program

CVTHEXPGM

would

not

have to

be

re-compiled. For example, there ar

two ways to add a new procedure to

CVTTOHEX, depending on whether th

procedure

goes

into

the

existing

module

or into a new

one.

To

add a

new

procedure

to an

existing module

,

you

would:

 

1. Add the new procedure to the existing module.

2. Recompile the changed module.

3. Modify the

binder

language source to

handle

the interface associa

new

procedure. This

would involve adding

any

new expfortllowingstatements

the

existing

ones.

 

 

 

4. Recreate the service program using CRTSRVPGM.

To add

a new

procedure using

a

new module

,

you

would:

1. Create

a

module

object for

the

 

new

procedure.

2. Modify

the

binder

language

source

to handle the interface associa

new

procedure, as

 

mentioned

above.

 

 

3.Bind the new module to service program CVTTOHEX by re-creating the program.

With either method, new programs can access the new function. Since th exports are in the same order they can still be used by the exist it is necessary to also update the existing programs, they do not ha compiled.

For more information on updating service programs,ILE Conceptssee.

Sample Binder Listing

Figure 46 on page 101 shows a sample binder listing for the CVTHEXPGM. Th listing is an example of a basic listing. For more information on binder “Using a Binder Listing” on page ILE85 andConceptsalso.

100 ILE RPG for AS/400 Programmer's Guide

Page 124
Image 124
IBM AS/400 manual Sample Binder Listing, Updating the Service

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.