Tag Archives for " #ILE "

AS400 Modernization starts with Modernizing RPG Applications

RPG Modernization

Modernizing RPG Programs – Learn the RPG History first I had email email from an old work colleague this morning. He was a windows programmer, with limited exposure to RPG, but works in a company that is driven by a huge, old, complex RPG3 application that has changed little over the last decade. He is […]

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Dirty RPG programmers need to write Clean RPG Code

This morning I was revisiting a program that I wrote last year and looking at my code thinking “Why the hell did I write it like that? #Ugly”. RPG code evolves and lots of code evolution starts in one direction and then branches off, drunkenly in another direction. This means that code can evolve to […]

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Write to joblog messages from RPGLE /FREE – a QMHSNDPM code example

RPG CODE EXAMPLE – “Write to joblog” in RPG4 /FREE Write to joblog lets us send messages from inside a running RPG program. It’s simple using one of IBM’s API’s – QMHSNDPM RPGLE Code Example // SNDMSGLOG1.RPGLE // Simple Program to send message to joblog using QMHSNDPM // Author: nick@nicklitten.com ctl-opt dftactgrp(*no) actgrp(‘NICKLITTEN’) option(*nodebugio:*srcstmt:*nounref) alwnull(*inputonly) […]

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Write to joblog messages from RPGLE /FREE – easy code example using Qp0zLprintf

RPG CODE EXAMPLE – “Write to joblog” in RPG4 /FREE Write to joblog lets us send messages from inside a running RPG program. It’s simple using one of IBM’s API’s – Qp0zLprintf I’ve used this little technique for ever. Simple define a procedure calling the API (in this example I call it “writejoblog”) and then in […]

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RPG Example reading JSON using YAJL from IFS

Decode JSON webservice reply data (already stored in IFS) using YAJL This reads the JSON from the IFS – decodes it using Y.A.J.L and reports on time taken to perform decode. Writing an RPG program to read JSON using YAJL is actually pretty straightforward — I hope this code example helps! In this case the […]

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RPG example: store webservice reply XML or JSON in IFS

As an RPG Programmer you are probably writing a ton of code to talk to remote webservices out there in internet land. If you are just leaning webservice programming – here is a simple RPG CODE EXAMPLE which talks to a remote webservice (using the open source HTTP API) and stores the reply from the webserice […]

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RPG Programming Standards – Code Style Guide for IBM i, iSeries and AS400 Programmers

The following article was written by “Bryan Meyers” for System i Network web site in 1998 but it’s still as useful today as it was then. “RPG Programming Standards” have been debated since we invented fire and Old Programmers never die, they just get really old grumpy and start drinking Bourbon. The Essential RPG IV […]

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I’m guilty of calling old fashioned RPG program code “legacy”

legacy rpg

I’ve always thought LEGACY it was the correct terminology for old fashioned RPG source code. For years I’ve been focused on refactoring old column based RPG “legacy” code into new “modern” RPGLE code. But it seems that I’ve been guilty of using the wrong words all this time. I just read an interesting article over […]

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