• Guru: Calling RPG Programs From Python, Part 1

  March 30, 2020 Mike Larsen

  In a prior article, I showed how to pass parameters to a Python script and execute the script from an RPG program. Based on feedback and my own curiosity, I wanted to see how I could pass parameters to an RPG program and call it from Python. After a bit of research, I found the Python interface itoolkit.

  itoolkit is an open source project provided by IBM as an interface to the XMLSERVICE toolkit, which allows us to call RPG programs, service programs, CL programs, and PASE Shell commands. itoolkit can be installed using an SSH terminal with …

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• Guru Classic: A Bevy Of BIFs — Updates

  February 5, 2020 Jon Paris

  In my previous tip I returned to the “Bevy” series to tell you about the latest addition to the family: %ScanRpl. Shortly after completing that tip I realized that there have been a number of more recent BIFs such as %SubArr and some enhancements to existing BIFs like %Trimx that seem to have escaped people’s notice. In this tip I attempt to fill those omissions.

  %Trim: Specify Characters to Trim

  Let’s start with a BIF that hopefully you are all familiar with: %Trim. Before going any further I should point out that when I say %Trim, I am referring to …

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• Guru: End Of Year Feedback

  December 2, 2019 Ted Holt

  The year has flown by. Before we know it, it will be 2020. The century is flying by, too. We’ve almost consumed a fifth of it. That seems like a good excuse to see what we might glean from some of your feedback. It’s been a while. More to come next week!

  Several readers wrote regarding the need to remove hard-coded values from programs. Jim brought up the problem of compile-time tables and arrays.

  I find cases where data is hard coded (state names, product categories are a few examples) for tables or arrays in dozens of programs.

  I wish …

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• How Infor’s Coleman Strategy Is Evolving, and How IBM i Fits In

  November 20, 2019 Alex Woodie

  It’s been more than two years since Infor unveiled Coleman, the company’s AI platform which became generally available earlier this year. It’s not on the roadmap for IBM i just yet, according to Infor. That may not sound ideal for Infor’s IBM i customers, but it’s not necessarily a bad thing.

  Coleman was unveiled by ERP software giant Infor in 2017 primarily as a digital assistant, which is a fancy way of saying a chatbot. Just as Siri and Alexa can answer questions about the weather or sports, Coleman could answer basic questions about the business, and even handle some …

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• Latest TRs For IBM i Now Available

  November 20, 2019 Alex Woodie

  IBM last week delivered the latest IBM i operating system Technology Refreshes, giving good IBM i boys and girls around the world early Christmas presents in areas like programing, operations, database, and security. Here’s a quick recap of the new stuff in IBM i 7.4 TR1 and 7.3 TR7.

  There were several general enhancements with IBM i 7.4 TR1 and 7.3 TR7. For starters, administrators gained more control over resources available to the Integrated Web Server (the one powered by Apache) with the new capability to install it the Web server in a user-specified sub-system. Admins also get new functions …

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• Digging Into the Latest IBM i TRs

  October 23, 2019 Alex Woodie

  The fall batch of Technology Refreshes (TRs) have been revealed, and as expected, there’s a bit of new functionality available for customers who use IBM i 7.3 and 7.4. In this story, we’ll tackle enhancements in open source, systems management and monitoring, and development, which means we’ll dive deeper into other areas, like database and HA/DR, in a future story.

  Let’s start with the fun stuff: open source. With IBM i 7.3 TR7 and 7.4 TR1, IBM has brought support for two prominent open source projects, including ZeroMQ and Redis.

  ZeroMQ is a universal messaging library that allows users to …

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• IBM i 7.3 And 7.4 Get Their Autumn Tech Refreshes

  October 9, 2019 Timothy Prickett Morgan

  Big Blue is hosting its IBM Systems Technical University this week, and used the occasion to quietly launch the Technology Refreshes, or TRs as they are known, for IBM i releases 7.3 and 7.4. If you were running around the Venetian Hotel, you could probably stitch together the extent of the updates to the platform, and to be honest, we are still trying to get all of the details, which were not available as we went to press.

  We will tell you what we know now, and then circle back and drill down into the details as appropriate.

  First of …

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• Guru: Parsing JSON With DATA-INTO And A Twist

  September 23, 2019 Mike Larsen

  One of my recent projects required me to parse JSON returned from a web service. On the surface this sounded like a pretty easy task, but I quickly ran into a challenge. The JSON being retuned didn’t have a top-level element, and since I wanted to load the JSON into a data structure, my program couldn’t handle it.

  After some searching, I found that some of my options included changing the code in the parser (JSONPARSE) or using a totally different parser altogether. While both of these are viable options, I decided to take a slightly different route.

  Before I …

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• Guru Classic: The Efficiency of Varying Length Character Variables

  August 14, 2019 Jon Paris

  Remember the bad old days when dinosaurs still roamed the earth and the only way to build strings in RPG involved playing silly games with arrays? Or worse still, obscure combinations of MOVE operations? Thankfully those days are far behind us — although sadly there are still a few RPG/400 dinosaurs coding away!

  RPG IV introduced many powerful new string handling options, such as the %TRIMx family of BIFs, but even now there are capabilities in the language that few programmers fully exploit. One of my favorites is variable length fields. This lack of familiarity made this tip an obvious …

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• Eradani Bridges The Gap Between Legacy And Open Source

  July 8, 2019 Timothy Prickett Morgan

  In this publication, legacy is not a dirty word or even remotely pejorative. Rather, “legacy” is just a shorthand way of delineating between applications that encapsulate decades of the evolution of a business and the transactions it processes, and all of the other new stuff that this business is also doing and perhaps coding with newer tools and programming languages.

  A new company, called Eradani, has been founded by some experts in both the IBM i world and the open source world with the express purpose of building a technical bridge so these two different cultures can see a …

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