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What is Open Source explained in LEGO

on April 30, 2014

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Replace your C3P0 or DBCP by Oracle pool (UCP)

Introduction : ODS or UCP? I've been using DBCP and C3P0 for a long time. But, a few months ago, I started to have problems with them. For example, sometimes, no way to get any connection to my database (while it's still possible with my Oracle SQL Developer). So, I decided to look at the code of C3P0. What a surprise! Even if it's a very common pool for a lot of projects (such as Hibernate), it seems to be dead. No more development, code complicated with sub projects, no Maven integration (...ok, ok, even if you hate Maven, you have to admit that it is very efficient to modify the code of mavenized projects...). Thus, I looked for a new pool. Of course, I found the recent tomcat jdbc pool . But I finally decided to work with Oracle pool just because I only have Oracle databases. So, this post is my history with Oracle pool. When you look for pool features on Oracle doc website, you find to ways to implement it : Oracle DataSource pool (also called ODS) and included in the

DCcduino usb drivers (CH340 / CH341 chipset)

I've just received my first arduino platform. It's a DCcduino board (a clone of Arduino Uno). As I had some difficulties to have it recognised by my MacBook, I decided to share its drivers. This card has a CH340 USB-to-serial chip. You can find drivers for this chip on the web site of the chinese manufacturer, here : http://www.wch.cn/downloads.php?name=pro&proid=5 Or download it directly from my Google Drive. The archive contains drivers for Mac, Linux and Windows platforms. https://drive.google.com/file/d/0B5okZr5AW4gaX2pZaWt6dVNaSFU/edit?usp=sharing I hope this will help somebody. UPDATE for Mac users with Yosemite : Please, follow this extra instructions : Install the CH340 driver Run the command in Terminal: sudo nvram boot-args="kext-dev-mode=1" Reboot

Display Javascript console logs with jsfiddle

Jsfiddle is mainly made to test javascript code in a web context (aka with HTML and CSS). But, if you just want to use is to test backend code, you probably want to see results in the console. This can be done by adding the following library to your project : https://rawgit.com/eu81273/jsfiddle-console/master/console.js You can also take a look at this example : https://jsfiddle.net/p24wbehf/1/

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