Skip to main content

Vaadin meetup

I attended Vaadin meetup with a few colleagues on a way to JFokus 2013 and thought I should share my notes of the two. First post is about vaadin meetup that took place on a cruise from Turku to Stockholm.

I made notes of three presentations and one of them I had high expectations. There were also two other presentations that I didn't make any notes of.

Vaadin 7


Vaadin released Vaadin 7 framework the same day that the meetup was on so they had a presentation where they told about new features and future plans. I'm more of a backend programmer than UI programmer so my notes of this were pretty brief but here it goes.

Whats new

  • Servlets and HTTP-sessions are controllable by the programmer
  • Multiple UI classes
    • e.g. One for web browsers and one for mobile web browsers
  • GWT is now build-in
  • Support for external JavaScript modules

What to expect in the future

  • Faster relase cycles
    • maintenance release every two weeks
  • Dynamic CSS injection
  • Vaadin CDI, their own depency injection system
  • Vaadin charts, for drawing nice charts

ePalo


This was a project ordered by Helsinki university and it was developed by a company called Arcusys. It's some sort of feedback system. The interesting part of this presentation was why they chose Vaadin framework for the UI. They chose it because it could programmed with Java or Scala and the developers didn't need to have any knowledge of web technologies like HTML, CSS or JavaScript.

Modern software development anti-patterns


Martijn Verburg, Diabolocal developer, had a presentation of software development anti-patterns. This the presentation that I really wanted hear he also had the same presentation later at JFokus. I had high hopes for this presentation and it didn't let me down. I'm just going to write a few buzzwords and notes here and the rest is available on Martijns slides and video filmed at the meetup.
  • Mortage-driven development
    • Write code to pay your mortage and make sure anyone else can't understand your code
  • Distracted by shine
    • Always use the latest and greatest
  • The deity
    • Huge classes e.g. Java class with 140k lines
Those were anti-patterns but he also gave tips how to avoid anti-patterns. 

One of the things he said is something in my opinion every developer should understand and remember. The anti-pattern was CV++ meaning that you try all the new frameworks and tools just so you can put a new line in your CV when instead you should be good at the principles.

So what does that mean. It means know the principles of software developent because languages, frameworks and tools change and evolve all the time but if you know hte principles you can always learn a new language or learn howto use a framework you haven't used before.

All the presentations of Vaadin meetup were filmed and uploaded to youtube. Links can be found at Vaadin meetup website https://vaadin.com/meetup/jfokus-2013.

On the next two posts I'll be what I learned in JFokus 2013.

Labels:

Comments

Post a Comment

Popular posts from this blog

DIY home automation v2

Previously I set up a simple home automation system for controlling outlets at home. So far I've used the system for controlling various lights at our home. I've been satisfied with oulet controlling via browser but I wanted something more. Objective I had a idea of temperature and humidity monitoring via Raspberry Pi. I was already browsing for electronics components needed for building a system with sensors but buying single components seemed a bit expensive and I would also have to actually connect all the components to RPi and write the code to read the sensor data. Mainly because of the price the components I started looking for a pre-built system with the preferred sensors. Almost immediately I came across Proove's sensor that has indoor and outdoor temperature sensors and a indoor humidity sensor. Best part of the pre-built system is that it's already compatible with TellStick system that I used for controlling outlets. I decided to buy the pre-built s
1 comment
Read more

DIY home automation, new generation

I've had my DIY home automation system for controlling outlets and reading sensor data running for about two years now. The system has been working fine and I haven't had any need to touch the code since I added the sensor reading to it, until a few months back. Need for new functionality Few months ago I got a new IoT toy for a lend from a friend until I'd get my own toys, a ruuvitag sensor beacon. Ever since I found the ruuvitag for the first time from kickstarter I had the idea of getting a bunch of ruuvitags and adding their weather station sensor readings as part of my home automation system. The original home automation backend included only tellstick compatible devices and was written in Python, and in my mind it was kind of a hack. The ruuvitag beacons communicate via BLE i.e. Bluetooth Low Energy and that meant that I needed to add functionality to read the beacon data via bluetooth. I found a ruuvitag Python library and initially thought that I'd just
1 comment
Read more

Automated browser testing in 2018

Every now and then I do some research on browser testing. More specifically I try to find and evaluate what kind of ready to use solutions or libraries have emerged since my previous research or if some of the previously tested solutions has come up with something new. Back in September 2017 I had some extra time on my hands and I used a couple of days to see what are the new and interesting solutions at that time. I came across some tools that I have used in the past and found two new interesting options in which one stood out. Say hello to TestCafe The most interesting solution that I found was called TestCafe . It's a open source Node.js library from a company called Developer Express Inc. They also have a commercial product called TestCafe ( confusing ) which I haven't tried as the open source library provided everything I was interested in and it seemed to be under active development . The thing that caught my interest at first was that this library doesn't depen
3 comments
Read more