How to configure modelmapper to skip nested properties in destination

Question

Source{
String one;
String two;
}

Destination{
String one;
Child child;
}

Child{
String two;
}

main() {
ModelMapper modelMapper = new ModelMapper();
// what configurations to set here?
Source source = new Source("one=1", "two=2");
Destination desiredResult = new Destination();
desiredResult.setOne("one=1");
Destination mappedResult = modelmapper.map(source, Destination.class )
assertEquals(mappedResult,  desiredResult );
}

The problem is that modelmapper will map source.two => destination.child.two, which I do not want. I have tried methods like

1. modelMapper.getConfiguration().setPreferNestedProperties(false);
2. modelMapper.getConfiguration().setAmbiguityIgnored(true);
3. modelMapper.getConfiguration().setImplicitMappingEnabled(false);
4. modelMapper.addMappings(new PropertyMap<Source, Destination>() {
      @Override
      protected void configure() {
        skip(destination.getChild());
        skip(destination.getChild().getTwo());
      }
    });

None worked.

I hope to have a general solution that can stop model mapper to map any nested object's properties in destination object.

Answer 1

Could you perhaps be missing some preexisting configuration? Your example works just fine for me.

Anyway, such things happen mostly when you are using LOOSE matching strategy.

modelMapper.getConfiguration().setMatchingStrategy(MatchingStrategies.LOOSE);

You can fix it by explicitly setting matching strategy to STANDARD or STRICT.

modelMapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STANDARD);

Or

modelMapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);

Check the docs for additional info on matching strategies, naming conventions, default configurations, etc.