ILE

Condition Handlers

pointer to

a

communication area

between SHOWERR and RPGHDLR, and a f

to

contain

the

possible actions,

resume or

percolate. (RPGHDLR does n

any

exceptions).

 

 

The basic logic of RPGHDLR is the following:

1. Test to see if it is an out-of-bounds error by testing the mes

¹If it is, and if SHOWERR has indicated that out-of-bounds err ignored, it writes 'Handling...' to QSYSPRT and then sets the ac

'Resume'.

¹ Otheriwse,

it

writes

out 'Percolating' to QSYSPRT,

and then sets

to 'Percolate'.

 

 

 

 

 

2. Return.

 

 

 

 

 

 

 

 

 

*=================================================================*

 

* RPGHDLR: RPG exception handling procedure.

*

 

*

 

 

This procedure does the following:

*

 

*

 

 

Handles the exception if it is the RPG

*

 

*

 

 

 

out of bounds error (RNX0100)

*

 

*

 

 

otherwise

 

 

*

 

*

 

 

 

percolates the exception

*

 

*

 

 

It also prints out what it has done.

*

 

*

 

 

 

 

 

 

 

*

 

* Note:

 

This is the exception handling procedure for the

*

 

*

 

 

SHOWERR procedure.

 

*

 

*=================================================================*

 

FQSYSPRT

O

 

F 132

 

PRINTER

 

 

D RPGHDLR

 

PR

 

 

 

 

 

D

Parm1

 

 

 

 

 

LIKE(CondTok)

 

 

D

Parm2

 

 

 

 

 

*

 

 

D

Parm3

 

 

 

 

 

10I 0

 

 

D

Parm4

 

 

 

 

 

LIKE(CondTok)

 

 

*

-----------------------------------------------------------------

 

 

 

 

 

*

 

* Procedure parameters

 

 

*

 

* 1. Input: Condition token structure

*

 

* 2. Input: Pointer to communication area containing

*

 

*

 

a. A pointer to the PSDS of the procedure being handled

*

 

*

 

b. An indicator telling whether a string error is valid

*

 

* 3. Output: Code identifying actions to be performed on the￿

*

 

*

 

 

exception

 

 

*

 

* 4. Output: New condition if we decide to promote the

*

 

*

 

 

condition.

Since this handler only resumes and

*

 

*

 

 

percolates, we will ignore this parameter.

*

 

*

-----------------------------------------------------------------

 

 

 

 

 

*

 

D RPGHDLR

 

PI

 

 

 

 

 

D

InCondTok

 

 

 

 

LIKE(CondTok)

 

 

D

pCommArea

 

 

 

 

*

 

 

D

Action

 

 

 

 

10I 0

 

 

D

OutCondTok

 

 

 

LIKE(CondTok)

 

 

 

 

 

 

 

 

 

 

Figure

116

(Part

1

of

2).

Source for Condition Handler for Out-of-Bounds Substring Er

Chapter 12. Handling Exceptions239

Page 263
Image 263
IBM AS/400 manual 132, Printer Rpghdlr, Action 10I OutCondTok LIKECondTok

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.