Dtos Mappers

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In this lesson, we'll implement the DTOs and mappers needed for displaying published events on the attendee landing page.

Implement the DTO

Let's create the ListPublishedEventResponseDto class:

@Data
@AllArgsConstructor
@NoArgsConstructor
public class ListPublishedEventResponseDto {
    private UUID id;
    private String name;
    private LocalDateTime start;
    private LocalDateTime end;
    private String venue;
}

This DTO includes only the fields needed for the event cards on the landing page: the event's ID, name, start and end times, and venue.

Adding the Mapper Method

Now we'll add a method to our EventMapper interface to convert Event entities to our new DTO:

@Mapper(componentModel = "spring", unmappedTargetPolicy = ReportingPolicy.IGNORE)
public interface EventMapper {
    // ... existing methods ...

    ListPublishedEventResponseDto toListPublishedEventResponseDto(Event event);
}

The MapStruct library will automatically generate the implementation because our DTO field names match the Event entity's field names.

Summary

Created the ListPublishedEventResponseDto class
Added the toListPublishedEventResponseDto method to the EventMapper interface