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The Midrange Programmer Philosophy
by Shannon O'Donnell
Welcome to the second issue of Midrange Programmer, OS/400 Edition. By this time, you
probably have a good idea of what kinds of topics we'll be covering and, more important, what this
newsletter will do for you and your career. And, hopefully, you are already looking forward to the next
issue. But before you dive into one of the technical articles in this issue, I wanted to take a moment
to tell you our philosophy, if you will, of why we at Midrange Programmer do the things we do.
READ MORE > |
Prototyping and Calling Java Methods from RPG
by Kevin Vandever
In the last issue, Ted Holt explained the advantages of prototyping programs and modules. He provided examples
of how to use prototypes and showed a consistent way to call prototyped functions, regardless of their
origin. I'm going to expand on that topic and show you some OS/400 V5R1 enhancements that enable RPG to define
Java classes and call Java methods using the Java Native Interface (JNI). And, as you'll see, prototyping is
right there in the middle of it all.
READ MORE > |
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Coding SQL Functions in OS/400 V5R1
by Howard F. Arner Jr.
Along with all of the other cool things in OS/400 V5R1 comes a lovely thing called the Persistent Stored
Modules (PSM) language, which you can use to develop stored procedures, triggers, and functions. This is
the language that was introduced in V4 as the stored procedure language on the AS/400. But many people
do not know that it's available for writing both triggers and user-defined functions. In this article, I'll
explain what PSM is and show you how to write a basic user-defined function.
READ MORE> |
Subprocedures: Better than Subroutines
by Ted Holt
Many RPG programmers no longer use conditioning or resulting indicators in calculation specs. Many no
longer use the cycle. Many no longer define variables in C-specs. Maybe it's time RPG programmers quit
using subroutines.
My RPG II teacher did not like subroutines and did not teach his students to use them. It wasn't until I
began writing production code that I learned the value of subroutines. But since then, I've found something
even better than subroutines: subprocedures.
READ MORE> |
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Five Cool Things You Can Do with OpsNav
by Shannon O'Donnell
Ever since IBM first introduced Operations Navigator, way back in 1995,
many of us have been wondering just what the heck to do with it. Truth be told, there wasn't a whole lot you could
do with the early version of OpsNav; it was very limited in functionality, and the ability to add functions to the
OpsNav client was virtually nonexistent. Today's incarnation of OpsNav, which comes with V5R1 of
Client Access Express, is very different from that first, early tool. In fact, it’s hard to believe they share the
same roots.
READ MORE> |
Let Your Hair Down With
Free-Formed C-Specs
by Kevin Vandever
RPG has undergone many transformations over the years. What started out as a cryptic, report-writing
programming language has grown into a full-fledged business computing language. Other languages have
come and gone, and many so-called experts claimed that RPG would be the next language to die. But
it hasn't, mostly because IBM has done a great job modifying the language to keep it current with the
technology around it.
READ MORE> |
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Reader Feedback and Insights
We value your feedback and your insights into the OS/400 market.
Feel free to drop us a letter to the editor and we will post
them in a reader feedback column associated with this newsletter.
READ MORE > |
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Copyright © 1996-2008 Guild Companies, Inc. All Rights Reserved.
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Editors
Shannon O'Donnell
Kevin Vandever
Managing Editor
Shannon Pastore
Conributing Editors
Howard Arner
Joe Hertvik
Ted Holt
David Morris
Richard Shaler
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Contact the Editors
Do you have a gripe, inside dope or an opinion?
Email the editors: editors@itjungle.com
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