Natural Born Coder

Author: doozer

  • Panasonic HC-V750 Metadata Files

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    I recently bought a Panasonic HC-V750 camcorder and I was intrigued by the additional files (.cont, pmpd and .tmb) it produces along with the video files – do they contain useful additional data?. A good googling didn’t turn up anything useful but a lot of people have wondered about them. 

  • XMarks vs Chrome Means You Lose

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    Yah, I’ve just managed to lose all of my important bookmarks thanks to a fight between Chrome and XMarks. To be fair this is a known issue but it’s easy to accidentally cause the problem and the only loser in the whole mess is the end user.

  • VirtualBox Additions on the Cloudera Training Machine

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    I was playing with the Cloudera training virtual machine (as supplied by the Intro to Hadoop and MapReduce course over on Coursera) today and I installed it into VirtualBox as suggested by the instructor notes. I must have hit every pot-hole on the way through though so I thought I’d document them here for anyone else…

  • Only detected a i686

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    doozer
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    One of the servers I manage is currently running Ubuntu 12.04 (Precise Pangolin) but in a little over a month 14.04 (Trusty Tahr) will be making an appearance. Now there’s no good reason for me to be rushing out an upgrading but it’s got to be done at some point so I thought I’d get…

  • UIInstructions cannot be cast

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    I f, like me, you are getting an error message along the lines of “UIInstructions cannot be cast to org.primefaces.model.menu.MenuElement” you are in luck because here’s the answer.

  • TransformerFactor AbstractMethodError

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    doozer
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    This little hint is perhaps a bit vague but it’s not completely clear where the problem lies but I know what fixed it.

  • Test Credit Card Numbers

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    A while back now I had to write a system to process credit cards. Since the software was capturing the card number itself it could perform some initial checking on the number to ensure that the user hadn’t made a trivial typing error.

  • Joomla and PageSpeed

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    A while back I installed the PageSpeed module for Apache in an effort to improve my sites performance. How much of an affect it has is debatable but the site scores more highly on the Google PageSpeed score which is a good thing since now it won’t suffer a listing penalty for being slow.

  • Subtle Subversion Problem

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    doozer
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    Here’s a problem you don’t see everyday which really shows up the stupidity of the whole case sensitive / insensitive filesystem battle between Windows and Unix like operating systems. Fortunately a lot of work has been done to make the two different schools of thought play together nicely but occasionally something falls through the cracks…

  • JavaFX 2 with JPA 2 and Drag and Drop – Part 3

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    This article will cover a method that can be used to include more than one entity type in a tree (the same system will work for other widgets such as lists and tables) by using a proxy holder. The previous articles in this series covered setting up the demo application and getting started with JPA.

  • Installing mod_pagespeed on Ubuntu

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    doozer
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    The mod_pagespeed extension is designed to reduce the load time of pages on a web site by performing certain optimizations such as  optimizing images and minifying CSS and JavaScript. This guide covers installing mod_pagespeed on an Apache server running under Ubuntu 12.04. The process should be the same for later versions of Ubuntu as well.

  • JavaEE 7 – A First Look

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    Now that JavaEE 7 is out of the starting blocks and running free I thought I’d have a first look. I decided that as I’ve not had a look at the JavaEE tutorial for a while I’d work my way through it as both a refresher and to find out about the new API’s available.…