Assisted inject can't match generics parameters correctly

_From [dtm+external@google.com](https://code.google.com/u/115440404260700484642/) on July 08, 2008 16:12:27_

I have a class with a constructor as:

public class Foo<I extends Baz> {

  public Foo(BarService service,
      FooProcessor<I> processor,
      BazHelper baz,
      Class<I> iClass) {
    ...
  }
}

Three of those paramters are generally gotten from guice, while the fourth
(the class) is a constant depending on where in the code I create a Foo.
(FooProcessor has a zero-arg constructor, so guice can fill it in no matter
what type is used as a parameter)

This would seem like a perfect use case for `@` AssistedInject , but trying this:

public interface FooFactory {
  <I extends Baz> Foo<I> create(Class<I> iClass);
}

and putting `@`Assisted in the right place on the constructor led to this
exception while creating the injector:
 
java.lang.IllegalArgumentException: class test.Foo has no `@`AssistInject
constructor that takes the `@`Assisted parameters [java.lang.Class<I>] in
that order. `@`AssistInject constructors are [public
test.Foo(test.BarService,test.FooProcessor,test.BazHelper,java.lang.Class)]
        at
com.google.inject.assistedinject.FactoryProvider.createMethodMapping(FactoryProvider.java:195)
        at
com.google.inject.assistedinject.FactoryProvider.<init>(FactoryProvider.java:102)
        at
com.google.inject.assistedinject.FactoryProvider.newFactory(FactoryProvider.java:96)
        at test.FooModule.configure(FooModule.java:138)
        at com.google.inject.AbstractModule.configure(AbstractModule.java:66)
...

(class names changed to obscure internal details)

_Original issue: http://code.google.com/p/google-guice/issues/detail?id=218_