IBM has published the following new technical articles, tutorials, and downloads on its DeveloperWorks and AlphaWorks websites. They cover a range of interesting (though not necessarily embedded) technical topics, primarily related to Linux and open source system development. Some require free registration.

• Real-time Java, Part 6: Simplifying real-time Java development — Now that real-time Java virtual machines support scoped memory, defining common patterns for scoped memory usage can improve developer productivity. These patterns reduce the need to understand or work with scopes directly by providing scopes' core functions with less complexity. Also, check out the rest of the Real-time Java series.
• Get started with the Eclipse Platform — Find out about the Eclipse Platform, including its origin and architecture. Starting with a brief discussion about the open source nature of Eclipse and its support for multiple programming languages, we demonstrate the Java development environment with a simple programming example. We also survey some of the software development tools available as plug-in extensions.
• Leverage Nagios with plug-ins you write — Nagios is open source monitoring software that scans hosts, services, and networks for problems. Learn more about Nagios and find out what new system monitoring possibilities exist with this software.
• Emacs editing environment, Part 4 — Take charge of your editing session within Emacs and use it to your advantage. This tutorial is the fourth in a series, and shows you three areas of Emacs that control some aspect of the editing session: various command-line options, the register, and bookmark facilities for setting and saving positions and data.
• Turn SQL into XML with PHP — Ever wished for an easy way to transform SQL result sets into XML? It's a PEAR package named XML_Query2XML, and it provides a comprehensive framework to efficiently turn the results of a database query into a customizable XML document. This article introduces the package, and demonstrates useful real-world applications, including using it with XSL and XPath, combining it with data from external Web services, and creating database dump files.
• Unit testing Ajax applications — You might get a thrill out of writing Ajax applications, but unit testing them is surely painful. In this article, Andrew Glover takes on the downside of Ajax (one of them, anyway), which is the inherent challenge of unit testing asynchronous Web applications.
• Ajax for Java Developers — Returning to his popular series, Philip McCarthy shows an effective approach: The Comet pattern allows you to push data to clients, and Jetty 6's Continuations API lets your Comet application scale to a large number of clients.

 
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