Fuzz Box

Visualizing the schooX dataset with Gephi, a colorful poster.

2011-10-21T02:59:00.001+03:00

So,schooX and Gephi. First of all, a few words about these two platforms. schooX - the academy for Self Learners - is a newfound startup which helps you collect and share content (wikis,videos,slides, etc), and optionally organize them into courses always accessible within schooX eliminating the need to visit again different media hubs tracking down knowledge you already found in the past.

Oracle Certified MySQL Associate uCertify prepkit review

2011-08-29T15:35:00.003+03:00

Back from vacation, feeling refreshed and ready for new things:) Here is a review of a preparation kit i received from uCertify for the Oracle Certified MySQL Associate exam. I found it worthwhile to share my my experience with the kit for developers interested in training to get a technical certification. The kit is by uCertify a company which specializes in the certification training domain

Do not use Java 7 yet

2011-07-29T14:03:00.008+03:00

The 7th release of Java today seems that introduced some nasty bugs caused by hotspot compiler optimizations miscompiling some loops. Code containing loops will propably be affected by this bug. If you use Java 7 use this switch when starting the JVM: -XX:-UseLoopPredicate Uwe Schindler an Apache Lucene PMC Member tweeted a warning earlier today as the bug affected Apache Lucene and Solr

Google plus Invites

2011-07-11T10:14:00.003+03:00

I have some Google Plus invites so contact me or add your email to the comments to invite you :) The comments are moderated and will never be published to prevent exposure of your email. Thank you.

Snail mail from Google AdSense, how does it look?

2011-07-09T19:14:00.028+03:00

So Google sends snail mail to verify address details. I wasn't expecting that but then again how else could verify ones' physical address? Hmm... Some pics of the mail...behold:

Google plus interface a new trend for rounded corners?

2011-07-07T16:29:00.001+03:00

Google with the launch of Google Plus has introduced a series of user interface changes. Probably you will have noticed the big black bar on top of your Google account. To me the new interface looks cleaner and...more edgy around the corners. Rounded buttons and insets have been replaced by smooth rectangles or semi-transparent drop out shadows. Will these changes have a greater overral effect

Greece's Public Sector merges its data, how it was done

2011-06-29T17:19:00.008+03:00

Kallikratis is the codename of the largest project ever conceived in the later years (2010-2011) of Greece's public sector digitalisation / computerisation effort and was founded by the Ministry of Interior and Decentralization. The goal? To migrate different datasets spread among different applications and databases within the public sector's infrastructure.That accounts to million rows of

JSF and Seam Security - custom login in 3 steps

2011-06-20T16:28:00.004+03:00

Seam framework provides a standard IdentityManagement API to manage user management and authentication.The Credentials class includes the two basic properties needed to perform user authentication. The username, and the password, (sic). But some times extra information is needed to authenticate a user. For example a company or an organization idenntification number, etc. What we can do is simply

Visualize this, software bugs as coloured dots

2011-05-27T18:13:00.000+03:00

Some developers, many many issues. How does it look? This comes straight out from our RnD department and shows how developers are connected to the various issues as they are submitted in our bug tracking system. The issues and the developers are colour coded: The Teal circles are the developers and they are connected to their assigned issues. Green dots represent resolved and finally closed

Resign Patterns

2011-05-18T16:37:00.001+03:00

The article titled Resign Patterns by Michael Duell was recently posted in a Linkedin discussion by Sergey G. , (Systems Architect). The discussion was about: What's your favorite design pattern? Why? and among the very useful and informative comments the Resign Patterns one hit me the most. It is a humorous take on design patterns and how they are applied under development pressure. I

Epic Q&A submission

2011-05-10T16:08:00.001+03:00

Jira submission from a Quality and Assurance department : JPEG screenshot inside Internet Explorer showing a screenshot of MSPaint editing a screenshot of Firefox browser runnng the application. Epic. Must go...deeper... Source from reddit.

Netbeans 6.5 JDK Not Found

2011-05-10T14:23:00.001+03:00

If you are trying to install an old Netbeans version under Windows 7 64bit ,(Netbeans 6.5), you may encounter the following error message: Java JDK Not FoundThis is a known issue and filed as a bug under Netbeans' tracker but there is a solution. The workaround is to manually extract the exe and execute the bundle.jar installer. From the commnand prompt execute the following two commands:

Happy 20th anniversary, Linux

2011-05-08T14:16:00.001+03:00

How software companies die

2011-05-06T14:48:00.000+03:00

An essay by Orson Scott Card, found it lurking in my articles folder but i lack the source. A very true and entertaining read. Hope you enjoy it. The environment that nutures creative programmers kills management and marketing types - and vice versa. Programming is the Great Game. It consumes you, body and soul. When you're caught up in it, nothing else matters. When you emerge into daylight, you

Current state of Jenkins presentation

2011-05-06T12:37:00.004+03:00

Current state of Jenkins View more presentations from Kohsuke Kawaguchi

Code Fitness - Visualize your java classes and identify complexity

2011-05-05T13:02:00.000+03:00

Before refactoring a class, package or library weak spots have to be identified. There are many code analysis tools providing insight, hints and alerts as to where someone should focus. But before reading these metrics i'd prefer to have a quick look, an overview of the structure and the complexity underneath especially in a new project. Something visual would be ideal. So jSizer comes to the

Reasons for Slow Database Performance

2011-04-24T18:18:00.002+03:00

Great article focusing on the reasons for slow database performance. Reasons for Slow Database Performance Notice the interesting comments about over normalization at the end of the article.

Continuous Integration in 40 screens

2011-04-19T01:42:00.008+03:00

These screens describe our continuous integration setup using Atlassian's software tools and Hudson. About one year ago, i was asked to research various products and setup a continuous integration test environment. The plan was to migrate part of our development to the new setup. These screens which are also available from my public Picassa album were taken during the evaluation process of

Sonar quality platform - Using profiles

2011-04-15T11:31:00.005+03:00

Quoting Sonar's official site: SONAR is an open source quality management platform, dedicated to continuously analyze and measure source code quality.In short, it tells you how bad your code is and where to start fixng things cost-wise. The total code quality of the project very much depends on the number of code violations. But when does something promote as a violation? Is parentheses' padding

Proteus a Web Document Management System

2011-04-12T22:53:00.007+03:00

Proteus is a Web Document Management System developed with Seam framewrok, JSF 1.2 and Richfaces framework combined with jQuery javascript library running under JBoss 5 AS. This is the very first presentation of the project during the inception phase of the project. RIAA DMS User Interface showcase View more presentations from Charalampos Arapidis.

How to change Hudson Jenkins default port.

2011-03-30T12:22:00.003+03:00

The Hudson and Jenkins CI build servers run by default on port 8080. To change this all you have to do is edit the hudson.xml or jenkins.xml file respectively. This file is located directly under the build server's installation directory. You'll notice that the xml contains a <service> which describes the windows service configuration. Locate the argument --httpPort=8080 and replace the 8080

Change Oracle 9i TNS Listener port from 8080

2011-03-28T15:51:00.002+03:00

The Oracle XMLDB port listens on the port 8080. To change this port to e.g. 8083 you need to login as SYSDBA and execute the following scripts: ( the first call changes the port number, the second refreshes the settings ) call dbms_xdb.cfg_update(updateXML(dbms_xdb.cfg_get(), '/xdbconfig/sysconfig/protocolconfig/httpconfig/http-port/text()', 8083)); exec dbms_xdb.cfg_refresh; Done!