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iDempiere and OSGi: a modular Java architecture

Jul 25, 2017 · 7 min read · iDempiere OSGi ·

iDempiere is an open source Enterprise Resource Planning (ERP) system that describes itself as "OSGi + ADempiere", but what does that mean in practice? iDempiere and Modularity This post describes OSGi and the technology stack that was used to build iDempiere so that developers and solution architects can see how …

PostgREST on RHEL 7.2

May 3, 2016 · 4 min read · PostgreSQL PostgREST ·

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PostgREST is an HTTP server written in Haskell that serves a fully RESTful API from a PostgreSQL database. It generates the endpoints directly from the database schema so you do not have to write anything from scratch. You just download the binary, fire it up with a database connection string and you are good to go. …

Tomcat 8 on Debian Jessie with PSI Probe and OpenNMS to monitor performance (Part 3)

Jul 4, 2015 · 4 min read · Tomcat OpenNMS ·

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We looked at Tomcat 8 in Part 1 of this series and at PSI Probe as a replacement for the default Tomcat Manager application in Part 2. Now PSI Probe is great for managing Tomcat and its applications, but it does not actively generate alerts if Tomcat is in difficulty, or any other part of the application stack for that …

Tomcat 8 on Debian Jessie with PSI Probe and OpenNMS to monitor performance (Part 2)

Jul 1, 2015 · 2 min read · Tomcat OpenNMS ·

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In Part 1 of this series of three, I looked at the installation of Tomcat 8 on Debian Jessie. The standard Tomcat Manager web application is limited in functionality, and the look-and-feel is distinctly lacking, so here is PSI Probe instead. PSI Probe featuresPSI Probe supplements the basic functionality of Tomcat …

Tomcat 8 on Debian Jessie with PSI Probe and OpenNMS to monitor performance (Part 1)

Jun 30, 2015 · 4 min read · Tomcat OpenNMS ·

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This is the first of three posts about the latest version of Apache Tomcat, still the most widely used application server, on Debian Jessie, with PSI Probe to manage it and OpenNMS to monitor its up-time. What's new in Tomcat 8?Debian Jessie was released with Apache Tomcat 8, which provides the following: Java Servlet …

How to fix and run the broken EclipseLink Tutorial example (JSF and JPA)

Apr 3, 2015 · 4 min read · JPA ·

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How to fix and run the broken EclipseLink Tutorial example (JSF and JPA)

The EclipseLink TutorialThe EclipseLink implementation of JPA has a tutorial for running it with JSF on the Tomcat servlet container, instead of a full-blown Java EE Application Server. The tutorial mentions two source code downloads, both of which were missing from the page, but I managed to find a directory of the …

Upgrade to Debian Jessie before the Official release date

Mar 12, 2015 · 3 min read · Debian ·

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Upgrade to Debian Jessie before the Official release date

I have been running Gnome Classic on Debian Wheezy for the last couple of years, but Debian Jessie will be released soon and it includes some interesting new packages: Docker for Linux containers Steam for gaming (in non-free) ownCloud for private cloud storage systemd as default, which has caused a lot of angst in the …