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  1. class SO52915280 {
  2.     public static void main(String[] args) throws Exception {
  3.         StringCommandBusRequest request = new StringCommandBusRequest();
  4.         Bus<CommandBus> bus = new CommandBus();
  5.         String result = bus.execute(request);
  6.     }
  7.  
  8.     public interface Bus<B extends Bus<B>> {
  9.         <R, Q extends BusRequest<R, B>> R execute(Q request);
  10.     }
  11.  
  12.     public interface BusRequest<R, B extends Bus<B>> {}
  13.  
  14.  
  15.     public static class CommandBus implements Bus<CommandBus> {
  16.     	@Override
  17.     	public <R, Q extends BusRequest<R, CommandBus>> R execute(Q request) {
  18.     		System.out.println("Got request of type: " + request.getClass());
  19.     	    return null;
  20.     	}
  21.     }
  22.  
  23.     public interface CommandBusRequest<T> extends BusRequest<T, CommandBus> {}
  24.  
  25.     public static class StringCommandBusRequest implements CommandBusRequest<String> {}
  26. }
Success #stdin #stdout 0.05s 2184192KB
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Standard input is empty
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Got request of type: class SO52915280$StringCommandBusRequest
https://ideone.com/U1TLXr
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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