Implicit Population Definition

Example using Hattori and JPA ...

Project class ...

@Entity
@Table(uniqueConstraints = { @UniqueConstraint(columnNames = { "name" }) })
public class Project extends AbstractPersistentObject {

    @Column(nullable=false)
    private String name;

    private String description;

    @OneToMany(cascade = CascadeType.ALL)
    @Cascade(value = org.hibernate.annotations.CascadeType.DELETE_ORPHAN)
    private List<Product> products;
    
    //getters and setters...
}

Project DTO ...

If the property names are the same, itīs possible to ... 

@ObjectPopulation(domainObjectClass = Project.class)
public class ProjectDTO extends AbstractPersistentObjectDTO {

    private String name;

    private String description;

    @CollectionFieldPopulation(dtoClass = ProductDTO.class)
    private List<ProductDTO> products = new ArrayList<ProductDTO>();