Question regarding using Mapstruct Decorator

[MileHighGuy]

Hi,

I am using with Spring Component Model and when i created a new Decorator using the approach described in the reference document. When i try to use the mapping after introducing the Decorator change,  i am getting NPE when the mapper method is being invoked from the delegate instance in the Mapstruct generated code. 

Not sure if the spring DI is not working or if i am missing any steps. 

Here are the annotations i have in Decorator code:

public abstract class PolicyWebServiceMapStructMapperDecorator implements PolicyWebServiceMapStructMapper { 

 @Autowired 

 @Qualifier("delegate") private PolicyWebServiceMapStructMapper delegate;

...

and here is the mapper code snippet

@Mapper(componentModel="spring")

@DecoratedWith(PolicyWebServiceMapStructMapperDecorator.class)

public interface PolicyWebServiceMapStructMapper {

          public B mapAToB(A a)

}

Thanks,

Santosh