I’m upgrading project mapstruct dependency from 1.2.0.Final to 1.4.2.Final.
Everything was going right util falling on a complex mapper which looks like the below snippet code:

@Mapper(componentModel = "spring")
public abstract class CustomMapper{

@Named("mapTestla")
@Mapping(target = "f", source = "t.f") 
public abstract TestlaDTO mapTestla(Testla t) {}

@Named("mapBar")
@Mapping(target = "t", source = "b.t", qualifiedByName = "mapTestla") 
public abstract BarDTO mapBar(Bar b) {}

@Mappings({@Mapping(target = "a", source = "f.a"), 
@Mapping(target = "b", source = "f.b", qualifiedByName = "mapBar")})
public abstract FooDTO mapFoo(Foo f) {}

}


class Foo {
 String a;
 Bar b;
}

class Bar {
 Tesla t;
}

class Testla {
String f;
}


class FooDTO {
 String a;
 Bar b;
}

class BarDTO {
 TeslaDTO t;
}

class TestlaDTO {
String f;
}

As You see in the error, mapstruct didn’t detect the referenced method despite they are annotated with @Named. It looks like a spring aop proxy problem..

Any idea of this issue?

PS: I don’t want to split the mapper into multiple mappers as we’re running behind schedule and it may lead to impact.

Error got:

Error : Qualifier error. No method found annotated with @Named#value: [ mapBar]. See https://mapstruct.org/faq/#qualifier for more info.

Error : Qualifier error. No method found annotated with @Named#value: [ mapTestla]. See https://mapstruct.org/faq/#qualifier for more info.