NHibernate 3.2 nxtgenug presentation at Southampton

Just a quick blog post explaining my recent presentation at the Southampton NxtGenUg meeting that took place on Thursday the 18th August.

The presentation was broken up into 4 parts:-

Part 1

Models and mappings - Shows how to model components, inheritance and collections using hbm XMLmappings

Part 2

Mapping by code - Shows how to model the same model in part 1 using the new sexy mapping by code syntax new to NHibernate 3.2. A simple console application showed how to retrieve some data.

Part 3

Sessions and transactions - Shows how NHibernate can be configured into a MVC 3 application, how a unit of work can implemented and how we can use NHProf.

Part 4

Queries - Shows how we break up a MVC 3 application into layers comprising of a Domain.Model, a service layer, a repository layer and the MVC 3 layer. The application uses Unity to achieve a loosely coupled design. NHProf is used extensively to show how we can optimise the queries. This part also covers eager loading versus lazy loading and how you should be aware of unwanted side effects.

Click here to download the complete presentation, the RAR file contains:-

• DB structure
• DB data
• Presentation notes
• All four VS2010 SLN

UPDATE : Newer demo and slides can be found here.

My next presentation is at Oxford on September 13th.

If you would like me to present NHibernate to your user group in the U.K. (or South Africa anytime in February 2012) then please contact me via twitter @rippo or email me richard AT wildesoft.net.

Gary Short and node.js

NxtGenUG are proud to announce that Gary Short is visiting Hereford on Monday 8th August 2011, to talk about Node.Js. It seems that Node.js is gaining momentum in the developer community.

Gary's presentation will cover a quick introduction to Node.js before going on to de-construct a network appliance application written in Node.js. By the end of the session you will have a better appreciation for this language which is sure to become more important in the coming years.

According to WIKI:-

Node.js is an event-driven I/O server-side JavaScript (built on V8 JavaScript engine) environment for Unix-like platforms. It is intended for writing scalable network programs such as web servers. It was created by Ryan Dahl in 2009, and its growth is sponsored by Joyent, which employs Dahl. Node.js is similar in purpose to Twisted for Python, Perl Object Environment for Perl, libevent for C and EventMachine for Ruby. Unlike most JavaScript, it is not executed in a web browser, but is instead a form of server-side JavaScript. Node.js includes a REPL environment for interactive testing.

HTTP Server version of hello world in Node.js:

var http = require('http');
 
http.createServer(function (request, response) {
    response.writeHead(200, {'Content-Type': 'text/plain'});
    response.end('Hello World\n');
}).listen(8000);

If you would like to find out more then please register on the NxtGenUG site. The event is FREE for non members, details on how to find us are:-

Shire Hall
Union Street
Hereford
HR1 2HX

Monday, August 08, 2011, 7:00 PM - 9:00 PM

We hope to see you there.