IBM i , Programming , RPG , Webservice
What is IBM i HTTPAPI? HTTPAPI is an IBM i library (LIBHTTP) containing a full set of API’s allowing any IBM i programmer to write webservices to read, write and tinker (those are technical terms) with cloud based applications. For example, you could use the HTTPAPI library to easily add some code to an RPG […]
More WaffleAS400 , IBM i , iSeries , Programming , RPG
As I was waffling this morning about the sad demise of IBM Developerworks Connections Wiki – here is another excellent article that discusses various extensions to IBM Rational Developer for IBM i – How to Extend RDi (#RDi) So here it is, re-posted before IBM can hide this wonderful source of old information: Write your […]
More WaffleAS400 , IBM i , iSeries , Programming , RPG
I was discussing the benefits of RDi with a colleague this morning (I’m a bit of a Rational Developer fanboy) because he is trying to justify the huge annual cost of the tool with The Management: nearly $1000 per year per person! A price tag that is #bloodypreposterous. But, I will rant about that in […]
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Updating any numeric DTAARA in RPGLE is slightly different in RPG /FREEFORMAT than in the good old fashioned column based RPG/400. Using RPG ILE, data structures are treated as character data. The nature of a data area is that its a string of data that can contain a mixture of various data formats. If we […]
More WaffleIBM i , Programming , RPG
This is purely a little memory jogger for me. Nothing to read here move along move along….. I just upgraded an old program that had a piece of code doing this: C DS#POS Div 256 POSLIN C Mvr POSCOL This old RPG400 code is reading the cursor position from the display […]
More WaffleAS400 , IBM i , iSeries , Programming , RPG , SQL
I’ve been involved in some heavy RPG modernization projects recently. Ranging from application replacements, to middleware webservice integrations to light code dusting…. I enjoy it all, just a little too much! Forget Alcoholics Anonymous, I should attend a software modernization addicts meetings where AA = AS400 Anonymous “Yes my name is Nick Litten and I […]
More WaffleIBM i , Programming , RPG , SQL
Following on from my previous blog (basic email validation) I decided that it would much nicer to (a) have the regex stored in a data area so that we can easily play with it to try different validation scenarios and (b) lets have a shot at a much stricter validation because there is an official […]
More WaffleIBM i , Programming , RPG , SQL
There are lots of code snippets, example programs and long waffling discussions in internet land filled with pointy headed AS400, iSeries and IBM i programmer chaps (and chappettes) arguing about the best way to “validate an email address in RPG”. I know because I’ve read nearly all of them, as well as tried all the […]
More WaffleIBM i , AS400 , Programming , RPG
RPG INDICATORS are switches Just like car indicators (or ‘blinkers’ as my American cousins call them) they can be switched *ON or *OFF in a program to indicate the state of a certain piece of logic. In the IBM RPG language, it used to logically flick the switch of a numeric indicator 01-99 to “indicate” […]
More WaffleIBM i , Programming , RPG
AKA – writing a new DSPLY opcode that shows more than 52 characters Using the DSPLY opcode to quickly debug a program has long been a staple of us RPG keyboard whackers. The DSPLY operation lets us “display the data in a variable” onto the screen. Everyone uses this quick and dirty technique and everyone […]
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