Package com.alpaca.mapper.impl

Class UserMapperImpl

java.lang.Object

com.alpaca.mapper.impl.UserMapperImpl

All Implemented Interfaces:

GenericMapper<User,UserResponseDTO,UserRequestDTO>, IUserMapper

@Component
public class UserMapperImpl
extends Object
implements IUserMapper

Implementation of the IUserMapper interface responsible for mapping between User entities and their corresponding request and response DTOs.

This mapper delegates nested object transformations to other mappers:

• IRoleMapper for mapping user roles.
• IProfileMapper for mapping the user profile.
• IAdvertiserMapper for mapping advertiser-related data.

Additionally, it uses the IRoleService to retrieve role entities based on IDs provided in the request DTO.

Key responsibilities:

• Convert User entities into UserResponseDTO objects.
• Convert UserRequestDTO objects into User entities.
• Transform collections of User entities into lists of UserResponseDTO.
• Handle null and empty inputs gracefully by returning safe defaults.

This class is annotated with Component to enable Spring's dependency injection and uses Lombok's RequiredArgsConstructor for constructor-based injection (if required in future).

See Also:

• User
• UserRequestDTO
• UserResponseDTO
• IRoleMapper
• IProfileMapper
• IAdvertiserMapper

Field Summary

Fields

Modifier and Type	Field	Description
private final IAdvertiserMapper	IAdvertiserMapper
private final IProfileMapper	profileMapper
private final IRoleMapper	roleMapper
private final IRoleService	roleService

Constructor Summary

Constructors

Constructor	Description
UserMapperImpl()

Method Summary

Modifier and Type	Method	Description
User	toEntity(UserRequestDTO requestDTO)	Converts a UserRequestDTO into a User entity.
List<UserResponseDTO>	toListResponseDTO(Collection<User> entities)	Converts a collection of User entities into a list of UserResponseDTO.
UserResponseDTO	toResponseDTO(User entity)	Converts a User entity into a UserResponseDTO.

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.alpaca.mapper.GenericMapper

toPageResponseDTO

Field Details

roleMapper

private final IRoleMapper roleMapper

profileMapper

private final IProfileMapper profileMapper

IAdvertiserMapper

private final IAdvertiserMapper IAdvertiserMapper

roleService

private final IRoleService roleService

Constructor Details

UserMapperImpl

public UserMapperImpl()

Method Details

toResponseDTO

public UserResponseDTO toResponseDTO(User entity)

Converts a User entity into a UserResponseDTO.

Specified by:

toResponseDTO in interface GenericMapper<User,UserResponseDTO,UserRequestDTO>

Parameters:

entity - the user entity to convert, may be null.

Returns:

the corresponding response DTO, or null if the input is null.

toEntity

public User toEntity(UserRequestDTO requestDTO)

Converts a UserRequestDTO into a User entity.

Roles are resolved using the IRoleService to fetch the corresponding entities.

Specified by:

toEntity in interface GenericMapper<User,UserResponseDTO,UserRequestDTO>

Parameters:

requestDTO - the request DTO containing user input data, may be null.

Returns:

the corresponding User entity, or null if the input is null.

toListResponseDTO

public List<UserResponseDTO> toListResponseDTO(Collection<User> entities)

Converts a collection of User entities into a list of UserResponseDTO.

Specified by:

toListResponseDTO in interface GenericMapper<User,UserResponseDTO,UserRequestDTO>

Parameters:

entities - the collection of user entities, may be null or empty.

Returns:

a list of response DTOs, or an empty list if the input is null or empty.