CODEWITHSUNDEEP
javadtomodelmapper
iftekhar iftekhar
iftekhar iftekhar

Reputation: 103

Convert Entity to DTO using Model Mapper is falling

How to use ModelMapper to convert Entity to DTO when the entity has OneToMany relationship with another entity.

I have one Entity Student

    @Getter
    @Setter
    public class Student{
        private int name;
        private Set<Department> department;
        }

    @Getter
    @Setter
    public class Department{
        private int name;
        }

    @Getter
    @Setter
    public class StudentDto{
     private int name;
            private Set<DepartmentDto> departmentDto;
    }

  @Getter
    @Setter
    public class DepartmentDto{
     private int name;
           private int name;
    }

I am using the below method to convert Entity to DTO:-

private List<StudentDto> convertToDto(List<Student> Student) {
        List<StudentDto> studentDtos= new LinkedList<>();
        Iterator<Student> student= student.iterator();
        while (student.hasNext()) {
            Student student2= student.next();
            studentDtos.add(modelMapper.map(student2, StudentDTo.class));
        }
        return studentDtos;
    }

When i am doing this i am calling this in my controller and there i can see that Department DTo is coming as null. Can you tell me where i am doing wrong?

Upvotes: 0

Views: 999

Answers (1)

Farvardin
Farvardin

Reputation: 5424

just change StudentDto to this:

@Getter
@Setter
public class StudentDto{
     private int name;
     private Set<DepartmentDto> department;
}

or better naming may be:

@Getter
@Setter
public class Student {
    private int name;
    private Set<Department> departments;
}

@Getter
@Setter
public class StudentDto {
    private int name;
    private Set<DepartmentDto> departments;
}

Upvotes: 1

Related Questions