MapStruct with Spring Boot，使用自定义注解注解生成的类

Question

Is there possibility, to annotate class generated by MapStruct, with custom annotation? Currently Im using MapStruct with componentModel defined as "spring" , like:

@Mapper(componentModel = "spring")
public interface MyMapper {}

For this interface, class is generated by MapStruct:

@Component
public class MyMapperImpl implements MyMapper {}

So I can easily inject it. What I want to do, is to annotate generated class with org.springframework.context.annotation.Profile annotation, so my generated bean will be in force only if specific profile is defined, is there possibility to inject such annotation, @Profile("dev") , to generated class somehow? I was thinking about org.mapstruct.DecoratedWith annotation, but I didn't make it working for me

Answer 1

This is currently not possible with the official API. This question is similar to mapstruct/mapstruct#1427 .

However, there are 2 options that you can try to make it work.

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Option 1 (annotate Mapper)

You can try to annotate MyMapper with the @Profile annotation, I am not sure whether Spring searches up the inheritance tree and in interface or not

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Option 2 (use internal API)

MapStruct has the ModelElementProcessor that it used to add the @Component annotation. The one for Spring is SpringComponentModelElementProcessor .

You can provide your own componentModel ( spring-dev for example) that would add the @Profile annotation to the generated mapper.