[REVIEW] Make controller instantiation customizable

Tom Schindl tom.schindl at bestsolution.at
Fri Dec 16 00:51:46 PST 2011

Am 16.12.11 02:18, schrieb Greg Brown:
>> But what Dan wants to do is to go from a string to an instance using a DI lookup, not from a string to a class to an instance. How does the combination of ClassLoader + ControllerFactory solve that?
> Can you be more specific? In other words, how does using a type argument vs. a string argument not permit that? I'm no expert on DI, but I know that we had a similar requirement in Pivot (developers wanted to use Spring and Guice to instantiate controllers) and a Class was sufficient in both of those cases.

The problem in DI is that for a given type (MyType) you can have
multiple registrations.

> public class ExampleModule extends AbstractModule {
> 	@Override
> 	protected void configure() {
> 		bind(MyBean.class).annotatedWith(Names.named("t1")).to(MyType.class);
> 		bind(MyBean.class).annotatedWith(Names.named("t2")).to(MyType.class);
> 	}
> }

If you now want to look up the type in the injector having MyType is not
enough but you need t1, t2.


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