List attribute to Object attribute - ModelMapper

Question

I'm have some problems when I'm trying use the Model Mapper in Java 8. I have a object "Person" and a object "Documents" I have a situation similar to this:

public class Doc   {

  private Integer type;
  private List<Documento> documentos = null;
  private Boolean flag;
}

public class Document {

    private Long doc1;
    private Long doc2;
    private Long doc3;
}

public class Person {

    private Integer type;
    private Long doc1;
    private Long doc2;
    private Long doc3;
    private Boolean flag;
}

modelMapper.addMappings(new PropertyMap<Person, Doc>() { 
    @Override
    protected void configure() {                
        map().setType(source.getType());
        map().setDoc1(source.getDocument().get(0).getDoc1().longValue());
        map().setDoc2(source.getDocument().get(0).getDoc2().longValue());
        map().setDoc3(source.getDocument().get(0).getDoc3().longValue());
        map()setFlag(source.getFlag());
    }
});

But, this don't work.

Invalid source method java.util.List.get(). Ensure that method has zero parameters and does not return void.

I need to just the first object of document list.

How can I resolve this ?

score 0 · Answer 1 · answered Apr 11 '19 at 14:37

0

Check out this solution from Hugues M.: ModelMapper: Ensure that method has zero parameters and does not return void which answers a similar question involving the exception you are getting.

answered Apr 11 '19 at 14:37

Saeleas

538
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List attribute to Object attribute - ModelMapper

1 Answers1