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ABAP Trapdoors: Morphing Method Parameters

This is a repost of an article published on the SAP Community Network.

Test, one two

Someone probably should have double-checked this...

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ABAP Trapdoors: The Myth of the Instance Constructor

This is a repost of an article published on the SAP Community Network.


Arguably one of the most misleading field values in the entire ABAP Workbench is this one:

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ALV Grid Function Code Reference

Once again, I had to deal with the ALV Grid and its default toolbar. Since I'm notoriously bad when it comes to remembering the function code constants that are used to disable the toolbar buttons, I've thrown together a small reference card. Perhaps someone else might be interested in this too...

Xtext-Artikel veröffentlicht

The Linux-Magazin 02/2011 - that is available as of today - contains an article in which I describe how to use Xtext and the ex-oAW technologies Xtend, Xpand and Check to create a custom configuration DSL and a configuration file generator.

Addendum: In the meantime, the article has been made publicly available.

Graphiti Talk Slides

Attached to this article you will find the slides of my talk project.replaceAll("GMF", "Graphiti");. At the Eclipse Demo Camp I described my experiences during the replacement of the Graphical Modeling Framework with the relatively recent framework Graphiti.

Flight

This is the first result of my work with Ableton Live - or rather, the first result I feel comfortable sharing...

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Hand in hand

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exim: select smarthost according to sender address

When sending mails from my systems, I usually want to use different smarthosts according to the sender address. If I use the sender address vwegert@web.de, I want the mail to be delivered via smtp.web.de, if I use one of my @volker-wegert.de addresses, I want to use the smarthost at Manitu and so on. With exim, this is possible with a few configuration adaptions.

First create a file named /etc/exim/smarthosts that will contain the routing information. The contents look like this:

Laptop Maintenance Mode for Gentoo Linux

I run Gentoo Linux on a variety of laptops, and while I'm generally happy with it, there are some places where the default system just doesn't fit my needs. Sometimes you can just feel how parts of the software were designed for 24/7 servers and not for mobile devices. For example, there are some processes that need to be run frequently, but that you really don't want to kick in when you're out in the field and running on battery power - updatedb, makewhatis or Leafnode's texpire for example. And there are some other maintenance actions that should be performed on a regular basis, too - emerge --sync and backup for example. And most of the time, I just don't feel inclined to manually perform all these tasks when retuning home after a working day. This is why I added a "maintenance mode" to my laptop installations. Usage of this maintenance mode is very straight forward - plug the laptop into the local network, power it on, select "maintenance mode" in the boot loader menu and go away. The system will automatically perform all actions and then power down.

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