Spring Enhance @DependsOn to be also configurable via class type

Currently the @DependsOn(...) annotation is only configurable using String, it would be nice to also support class type. Example: 1- Current situation:

@Configuration
public class Config {

  @Bean 
  public Bean1 bean1(){
   return new Bean1();
  }

  @Bean 
  @DependsOn(value={"bean1"})
  public Bean2 bean2(){
   return new Bean2();
  }
}

Enhancement:

@Configuration
public class Config {

  @Bean 
  public Bean1 bean1(){
   return new Bean1();
  }

  @Bean 
  @DependsOn(value={Bean1.class})
  public Bean2 bean2(){
   return new Bean2();
  }
}

It's easier to remember the class than bean name. Thanks

Comment From: chenqimiao

@akuma8 The name of bean can specific the bean, but the class may represent more than one. If @DependsOn supports class attribute, it may seem confusing.

Comment From: akuma8

@chenqimiao I know, maybe throwing an exception in the case there are several beans of the same type or create those beans (of the same type) before creating the dependant bean.

Comment From: dingqianwen

I think it is a good choice to support @DependsOn (value={bean.class})

Comment From: snicoll

Thanks for the suggestion, but dependOns is really meant to refer to a bean name as the metadata is required very early on in the bean factory lifecycle. Offering a class would mean that we'd be able to resolve the candidate bean types and we won't be able to do that reliably.