TEERA 2.0: Technology blog

For the past week, I’ve been trying out StructureMap, a dependency injection framework for .NET. I’ve tried a few DI/IoC containers before including Spring and Castle Windsor and I feel right at home with StructureMap.Usually when I try out a new framework, I usually look at how much time it takes and how much code I have to write to get some basic (HelloWorld) program running. Comparing to Spring, I found StructureMap API and configuration more intuitive and efficient. Here are the example

 
public interface IHelloWorld
{
  void SayHello();
}
 
public class JapaneseHelloWorld: IHelloWorld
{
   public string Name { get; set; }
   public void SayHello()
   {
     Console.WriteLine("Konijiwa! " + Name);
   }
}
 
public class SpanishHelloWorld: IHelloWorld
{
  public string Name { get; set; }
  public void SayHello()
  {
     Console.WriteLine("Ohla! " + Name);
  }
}

Here I have a hello world interface with 2 speaker classes, Japanese and Chinese. In my client project, I add a new file called StructureMap.config with the following configuration.  In my client program, I run the following code

IList<IHelloWorld> helloWorlders = ObjectFactory.GetAllInstances<IHelloWorld>(); //return list of 2 
IHelloWorld jap = ObjectFactory.GetNamedInstance<IHelloworld>("Japanese"); 
jap.SayHello();

The output is “Konijiwa! Koizumi-san”. As you can see, the amount of code I have to write and configuration files are quite minimum. Less code is always a good code. I also found StructureMap API to be well thought out and straight to the point of getting things done. Definitely worth your time checking it out.