Using

Bindable

APIs

A subprocedure ends abnormally

and control returns

to the

calling procedur

when an unhandled exception occurs. Again, no further actions occur un procedure ends.

If the main procedure is never called (and therefore cannot end) t areas, etcetera, will not be closed. If you think this might arise you should code a termination procedure that gets called when the ends. This is especially true if the subprocedure is in a module fied on the control specification.

Returning using ILE Bindable

APIs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

You can end a procedure

normally

by

using the ILE bindable API

CEETR

However,

the

API

willall

callend

stack

entries

that

are

in

the

same

activa

up to the control boundary. When a

procedure

is

ended

using

CEETREC

normal

 

termination

processing

as

described

above

for

main

procedures

cedures.

On

the

next

call

to

the procedure, a

fresh

copy is

avai

Similarly,

you

can

end

a procedure abnormally using the ILE bindable

CEE4ABN.

The

procedure will

then

follow

abnormal

termination

as described

above.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:

You cannot use either of these APIs in a program created wit

 

 

DFTACTGRP(*YES),

since

procedure

calls are

not

allowed

in

these

pro

 

 

dures.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note

that

 

if

the

main

procedure

is

not

active,

or

if

there

is

no

get

closed

or

freed.

In

this case, you should enable an ILE canc

CEERTX.

If

the

cancel

handler is

in

the same module, it can close t

the

data

 

areas,

and

perform the other termination actions.

 

 

For more

information on

CEETREC

and

CEE4ABN

refer

Systemto theAPI

Refer-

 

 

ence.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Using Bindable APIs

Bindable application programming interfaces (APIs) are available to all guages. In some cases they provide additional function beyond that specific ILE language. They are also useful for mixed-language applic because they are HLL independent.

The bindable APIs provide a wide range of functions including:

¹ Activation group and control flow management

¹Storage management

¹Condition management

¹Message services

¹Source Debugger

¹Math functions

¹Call management

¹Operational descriptor access

Chapter 10. Calling Programs and Procedures155

Page 178 Page 180
Page 179
Image 179
IBM AS/400 manual Using Bindable APIs, Returning using ILE Bindable, Subprocedure ends abnormally
Page 178 Page 180

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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