Friday, July 24, 2009

Manning Book Reviews

Thought i'd let you guys know of some books i have been reading that are pretty good, They are all from Manning which I am really starting to like that publisher more and more.

JQuery In Action: Within about 90 minutes of reading this book you will understand the fundamentals of jQuery and be ready to do basic, but powerful, jQuery code. If you are using javascript natively seriously consider switching to jQuery and get this book. jQuery also has a test framework (QUnit) and a great suite of UI plugins (jQuery UI)

Art Of Unit Testing: Easily the best unit testing book I have read (and I have read a few). Great for newbies and those still getting to grips with how to test anything more than the most trivial of examples. It is the book i would recommend to people looking to learn to do TDD well. Note the examples are in C# but they really dont require indepth knowledge of .Net, in the same way all the other books are in java and I havent written a line of a coffee flavoured code in a decade. In saying that the tools are all .Net based but i am sure there are Python, Ruby and Java equivilents avaliable for most.

NHibernate in Action: Pretty much the same as the Hibernate book but shows all the .Net stuff you can do. its also a bit more up to date that the original Hibernate book (which has since had a second release). .Net devs nusing NH need* this book.

IronPython in Action: not a bad book... it does exactly what it intends, it teaches .Net devs about python on the CLR. The question is: Do you care? For me it was something of interest, i doubt I'll ever use it in production. As a side note for the .Net kids i think the path of C# => Boo => Python =>Ruby is the one to take for the typical C# developer**. It keeps the "barrier to entry" low for the next step so you are picking up one new thing at a time (ie new syntax, dynamic language contrainst, DSLs and other scripty weirdness) and by the end of the process you have 4 languages under your belt in about the same time it would take to do the C# => Ruby jump.

that's all


*OK no one needs anything, especially as the NH doc a pretty good, but you will be severely hindered without it.
** VB.Net devs; you know you will never learn another language, you have had years to do so!

Wednesday, July 22, 2009

Unity with config free AOP

At the current place of work i have managed to introduce the notion of IoC and DI. As the team was using EntLib i investigated Unity and found it to be a suitable replacement for Windsor or SM considering how we were going to be using it.
We have just started up a new project and i have asked one of the lads to investigate AOP with unity, what we found was a pretty simple solution for our initial requirement, logging the service calls using Unity

Below is the 3 files that make up the spike. it very trivial, but there is some pretty average info on how Unity work, there is sample (like this) but with little explanation as to what is going on. David Hayden is probably the first port of call for more info (note you will need to reference Unity 1.2 and Unity Interception).
Note we are using the TransparentProxyInterceptor not the InterfaceInterceptor, which i believe is broken as it does not handle inheritance, which in an OO world is not good enough.

class Program
static void Main(string[] args)
IUnityContainer container = new UnityContainer();
container.RegisterType<ITalker, Talker>();
<ITalker>(new TransparentProxyInterceptor()).
AddMatchingRule(new TypeMatchingRule(typeof(ITalker))).

Console.WriteLine("This is the start");
Console.WriteLine("This is the end");

public interface ITalker
void Talk();

public class Talker : ITalker
public void Talk()

public class LoggerHandler : ICallHandler
public LoggerHandler()
Order = 0;

public int Order { get; set; }

public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate

Console.WriteLine("** I'm in!**");
var result = getNext().Invoke(input, getNext);
Console.WriteLine("** Out I go :) **");
return result;

Which returns :
This is the start
** I'm in!**
** Out I go :) **
This is the end
*Sorry about the formatting, this is done with out WLW*