Package com.alpaca.mapper.impl

Class RoleMapperImpl

java.lang.Object

com.alpaca.mapper.impl.RoleMapperImpl

All Implemented Interfaces:

GenericMapper<Role,RoleResponseDTO,RoleRequestDTO>, IRoleMapper

@Component
public class RoleMapperImpl
extends Object
implements IRoleMapper

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

This mapper uses:

• IPermissionMapper to handle nested permission mappings.
• IPermissionService to resolve permission entities from IDs provided in request DTOs.

Key responsibilities:

• Convert Role entities into RoleResponseDTO objects.
• Convert RoleRequestDTO objects into Role entities.
• Transform collections of roles into lists of response DTOs.
• 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:

• Role
• RoleRequestDTO
• RoleResponseDTO
• IPermissionMapper
• IPermissionService

Field Summary

Fields

Modifier and Type	Field	Description
private final IPermissionMapper	permissionMapper
private final IPermissionService	permissionService

Constructor Summary

Constructors

Constructor	Description
RoleMapperImpl()

Method Summary

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

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

permissionMapper

private final IPermissionMapper permissionMapper

permissionService

private final IPermissionService permissionService

Constructor Details

RoleMapperImpl

public RoleMapperImpl()

Method Details

toResponseDTO

public RoleResponseDTO toResponseDTO(Role entity)

Converts a Role entity into a RoleResponseDTO.

Specified by:

toResponseDTO in interface GenericMapper<Role,RoleResponseDTO,RoleRequestDTO>

Parameters:

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

Returns:

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

toEntity

public Role toEntity(RoleRequestDTO requestDTO)

Converts a RoleRequestDTO into a Role entity.

Permissions are resolved using the IPermissionService to fetch the corresponding entities.

Specified by:

toEntity in interface GenericMapper<Role,RoleResponseDTO,RoleRequestDTO>

Parameters:

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

Returns:

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

toListResponseDTO

public List<RoleResponseDTO> toListResponseDTO(Collection<Role> entities)

Converts a collection of Role entities into a list of RoleResponseDTO.

If the collection contains only one element, it is processed without iteration for optimization purposes.

Specified by:

toListResponseDTO in interface GenericMapper<Role,RoleResponseDTO,RoleRequestDTO>

Parameters:

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

Returns:

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