Implement Disc entity with complete CRUD operations

Add full implementation for Disc entity following existing patterns:
  - Create Disc model with Album relationship
  - Add DiscRepository for data persistence
  - Implement DiscService with business logic
  - Create DiscMapper for protobuf conversion
  - Add all handler classes (Create, Get, GetById, Update, Delete)
  - Register DiscService in DelegateActionManager
  - Define disc.proto with all message types

  🤖 Generated with [Claude Code](https://claude.com/claude-code)

  Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
Gustavo Henrique Santos Souza de Miranda 2025-12-08 17:45:04 -03:00
parent 61c5124d27
commit 07f7405b03
11 changed files with 643 additions and 0 deletions

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@ -0,0 +1,50 @@
package com.mediamanager.mapper;
import com.mediamanager.model.Disc;
import com.mediamanager.protocol.messages.DiscMessages;
public class DiscMapper {
public static DiscMessages.Disc toProtobuf(Disc entity) {
if (entity == null) {
return null;
}
Integer discNumber = entity.getDiscNumber();
if (discNumber == null) {
throw new IllegalArgumentException("Disc number cannot be null");
}
DiscMessages.Disc.Builder builder = DiscMessages.Disc.newBuilder()
.setDiscNumber(discNumber);
Integer id = entity.getId();
if (id != null) {
builder.setId(id);
}
// Map Album foreign key
if (entity.getAlbum() != null && entity.getAlbum().getId() != null) {
builder.setFkAlbumId(entity.getAlbum().getId());
}
return builder.build();
}
public static Disc toEntity(DiscMessages.Disc protobuf) {
if (protobuf == null) {
return null;
}
Disc entity = new Disc();
if (protobuf.getId() > 0) {
entity.setId(protobuf.getId());
}
entity.setDiscNumber(protobuf.getDiscNumber());
// Note: Foreign key relationship (Album) is handled in the service layer
return entity;
}
}

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@ -0,0 +1,47 @@
package com.mediamanager.model;
import jakarta.persistence.*;
@Entity
@Table(name = "disc")
public class Disc {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
@Column(name = "disc_number", nullable = false)
private Integer discNumber;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "fk_album_id",nullable = false)
private Album album;
public Disc() {
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Integer getDiscNumber() {
return discNumber;
}
public void setDiscNumber(Integer discNumber) {
this.discNumber = discNumber;
}
public Album getAlbum() {
return album;
}
public void setAlbum(Album album) {
this.album = album;
}
}

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@ -0,0 +1,100 @@
package com.mediamanager.repository;
import com.mediamanager.model.Disc;
import jakarta.persistence.EntityManager;
import jakarta.persistence.EntityManagerFactory;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import java.util.List;
import java.util.Optional;
public class DiscRepository {
private static final Logger logger = LogManager.getLogger(DiscRepository.class);
private final EntityManagerFactory entityManagerFactory;
public DiscRepository(EntityManagerFactory entityManagerFactory) {
this.entityManagerFactory = entityManagerFactory;
}
public Disc save(Disc disc) {
logger.debug("Saving Disc: {}", disc.getDiscNumber());
EntityManager em = entityManagerFactory.createEntityManager();
em.getTransaction().begin();
try {
em.persist(disc);
em.getTransaction().commit();
logger.debug("Disc has been saved successfully");
return disc;
} catch (Exception e) {
em.getTransaction().rollback();
logger.error("Error while saving Disc: {}", e.getMessage());
throw e;
} finally {
if (em.isOpen()) em.close();
}
}
public List<Disc> findAll() {
logger.debug("Finding All Disc");
EntityManager em = entityManagerFactory.createEntityManager();
try{
return em.createQuery("select d from Disc d", Disc.class).getResultList();
}finally {
if (em.isOpen()) em.close();
}
}
public Optional<Disc> findById(Integer id) {
logger.debug("Finding Disc with id: {}", id);
EntityManager em = entityManagerFactory.createEntityManager();
try{
Disc disc = em.find(Disc.class, id);
return Optional.ofNullable(disc);
}finally {
if (em.isOpen()) em.close();
}
}
public Disc update(Disc disc) {
logger.debug("Updating Disc: {}", disc.getDiscNumber());
EntityManager em = entityManagerFactory.createEntityManager();
em.getTransaction().begin();
try {
Disc updated = em.merge(disc);
em.getTransaction().commit();
logger.debug("Disc has been updated successfully");
return updated;
} catch (Exception e) {
em.getTransaction().rollback();
logger.error("Error while updating Disc: {}", e.getMessage());
throw e;
} finally {
if (em.isOpen()) em.close();
}
}
public boolean deleteById(Integer id){
logger.debug("Deleting Disc with id: {}", id);
EntityManager em = entityManagerFactory.createEntityManager();
em.getTransaction().begin();
try{
Disc disc = em.find(Disc.class, id);
if (disc == null) {
em.getTransaction().rollback();
return false;
}
em.remove(disc);
em.getTransaction().commit();
logger.debug("Disc has been deleted successfully");
return true;
} catch (Exception e) {
em.getTransaction().rollback();
logger.error("Error while deleting Disc: {}", e.getMessage());
throw e;
} finally {
if (em.isOpen()) em.close();
}
}
}

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@ -3,6 +3,7 @@ package com.mediamanager.service.delegate;
import com.google.protobuf.ByteString;
import com.mediamanager.protocol.TransportProtocol;
import com.mediamanager.repository.*;
import com.mediamanager.repository.DiscRepository;
import com.mediamanager.service.album.AlbumService;
import com.mediamanager.service.albumart.AlbumArtService;
import com.mediamanager.service.albumhasartist.AlbumHasArtistService;
@ -15,6 +16,7 @@ import com.mediamanager.repository.GenreRepository;
import com.mediamanager.service.artist.ArtistService;
import com.mediamanager.service.delegate.annotation.Action;
import com.mediamanager.service.disc.DiscService;
import com.mediamanager.service.genre.GenreService;
import com.mediamanager.service.samplingrate.SamplingRateService;
import jakarta.persistence.EntityManagerFactory;
@ -100,6 +102,10 @@ public class DelegateActionManager {
AlbumHasGenreService albumHasGenreService = new AlbumHasGenreService(albumHasGenreRepository, albumRepository, genreRepository);
serviceLocator.register(AlbumHasGenreService.class, albumHasGenreService);
DiscRepository discRepository = new DiscRepository(entityManagerFactory);
DiscService discService = new DiscService(discRepository, albumRepository);
serviceLocator.register(DiscService.class, discService);
serviceLocator.logRegisteredServices();
logger.info("Services initialized successfully");

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package com.mediamanager.service.delegate.handler.disc;
import com.google.protobuf.ByteString;
import com.google.protobuf.InvalidProtocolBufferException;
import com.mediamanager.mapper.DiscMapper;
import com.mediamanager.model.Disc;
import com.mediamanager.protocol.TransportProtocol;
import com.mediamanager.protocol.messages.DiscMessages;
import com.mediamanager.service.delegate.ActionHandler;
import com.mediamanager.service.delegate.annotation.Action;
import com.mediamanager.service.disc.DiscService;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
@Action("disc.create")
public class CreateDiscHandler implements ActionHandler {
private static final Logger logger = LogManager.getLogger(CreateDiscHandler.class);
private final DiscService discService;
public CreateDiscHandler(DiscService discService) {
this.discService = discService;
}
@Override
public TransportProtocol.Response.Builder handle(ByteString requestPayload) throws InvalidProtocolBufferException {
try{
DiscMessages.CreateDiscRequest createRequest =
DiscMessages.CreateDiscRequest.parseFrom(requestPayload);
Disc disc = discService.createDisc(
createRequest.getDiscNumber(),
createRequest.getFkAlbumId() > 0 ? createRequest.getFkAlbumId() : null
);
DiscMessages.Disc discProto = DiscMapper.toProtobuf(disc);
DiscMessages.CreateDiscResponse createDiscResponse = DiscMessages.CreateDiscResponse.newBuilder()
.setDisc(discProto)
.build();
return TransportProtocol.Response.newBuilder()
.setPayload(createDiscResponse.toByteString());
} catch (IllegalArgumentException e) {
logger.error("Validation error", e);
return TransportProtocol.Response.newBuilder()
.setStatusCode(400)
.setPayload(ByteString.copyFromUtf8("Validation error: " + e.getMessage()));
} catch (Exception e) {
logger.error("Error creating disc", e);
return TransportProtocol.Response.newBuilder()
.setStatusCode(500)
.setPayload(ByteString.copyFromUtf8("Error: " + e.getMessage()));
}
}
}

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@ -0,0 +1,59 @@
package com.mediamanager.service.delegate.handler.disc;
import com.google.protobuf.ByteString;
import com.google.protobuf.InvalidProtocolBufferException;
import com.mediamanager.protocol.TransportProtocol;
import com.mediamanager.protocol.messages.DiscMessages;
import com.mediamanager.service.delegate.ActionHandler;
import com.mediamanager.service.delegate.annotation.Action;
import com.mediamanager.service.disc.DiscService;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
@Action("disc.delete")
public class DeleteDiscHandler implements ActionHandler {
private static final Logger logger = LogManager.getLogger(DeleteDiscHandler.class);
private final DiscService discService;
public DeleteDiscHandler(DiscService discService) {
this.discService = discService;
}
@Override
public TransportProtocol.Response.Builder handle(ByteString requestPayload)
throws InvalidProtocolBufferException {
try {
DiscMessages.DeleteDiscRequest deleteRequest =
DiscMessages.DeleteDiscRequest.parseFrom(requestPayload);
int id = deleteRequest.getId();
boolean success = discService.deleteDisc(id);
DiscMessages.DeleteDiscResponse deleteResponse;
if (success) {
deleteResponse = DiscMessages.DeleteDiscResponse.newBuilder()
.setMessage("Disc deleted successfully")
.build();
return TransportProtocol.Response.newBuilder()
.setPayload(deleteResponse.toByteString());
} else {
deleteResponse = DiscMessages.DeleteDiscResponse.newBuilder()
.setMessage("Disc not found")
.build();
return TransportProtocol.Response.newBuilder()
.setStatusCode(404)
.setPayload(deleteResponse.toByteString());
}
} catch (Exception e) {
logger.error("Error deleting disc", e);
DiscMessages.DeleteDiscResponse deleteResponse =
DiscMessages.DeleteDiscResponse.newBuilder()
.setMessage("Error: " + e.getMessage())
.build();
return TransportProtocol.Response.newBuilder()
.setStatusCode(500)
.setPayload(deleteResponse.toByteString());
}
}
}

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@ -0,0 +1,56 @@
package com.mediamanager.service.delegate.handler.disc;
import com.google.protobuf.ByteString;
import com.google.protobuf.InvalidProtocolBufferException;
import com.mediamanager.mapper.DiscMapper;
import com.mediamanager.model.Disc;
import com.mediamanager.protocol.TransportProtocol;
import com.mediamanager.protocol.messages.DiscMessages;
import com.mediamanager.service.delegate.ActionHandler;
import com.mediamanager.service.delegate.annotation.Action;
import com.mediamanager.service.disc.DiscService;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import java.util.Optional;
@Action(value = "disc.getById")
public class GetDiscByIdHandler implements ActionHandler {
private static final Logger logger = LogManager.getLogger(GetDiscByIdHandler.class);
private final DiscService discService;
public GetDiscByIdHandler(DiscService discService) {
this.discService = discService;
}
@Override
public TransportProtocol.Response.Builder handle(ByteString requestPayload)
throws InvalidProtocolBufferException{
try{
DiscMessages.GetDiscByIdRequest getByIdRequest =
DiscMessages.GetDiscByIdRequest.parseFrom(requestPayload);
int id = getByIdRequest.getId();
Optional<Disc> discOpt = discService.getDiscById(id);
if (discOpt.isEmpty()){
logger.warn("Disc not found with ID: {}", id);
return TransportProtocol.Response.newBuilder()
.setStatusCode(404)
.setPayload(ByteString.copyFromUtf8("Disc not found"));
}
DiscMessages.Disc discProto = DiscMapper.toProtobuf(discOpt.get());
DiscMessages.GetDiscByIdResponse getByIdResponse = DiscMessages.GetDiscByIdResponse.newBuilder()
.setDisc(discProto)
.build();
return TransportProtocol.Response.newBuilder()
.setPayload(getByIdResponse.toByteString());
} catch (Exception e) {
logger.error("Error getting disc by ID", e);
return TransportProtocol.Response.newBuilder()
.setStatusCode(500)
.setPayload(ByteString.copyFromUtf8("Error: "+ e.getMessage()));
}
}
}

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@ -0,0 +1,47 @@
package com.mediamanager.service.delegate.handler.disc;
import com.google.protobuf.ByteString;
import com.google.protobuf.InvalidProtocolBufferException;
import com.mediamanager.mapper.DiscMapper;
import com.mediamanager.model.Disc;
import com.mediamanager.protocol.TransportProtocol;
import com.mediamanager.protocol.messages.DiscMessages;
import com.mediamanager.service.delegate.ActionHandler;
import com.mediamanager.service.delegate.annotation.Action;
import com.mediamanager.service.disc.DiscService;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import java.util.List;
@Action("disc.getAll")
public class GetDiscHandler implements ActionHandler {
private static final Logger logger = LogManager.getLogger(GetDiscHandler.class);
private final DiscService discService;
public GetDiscHandler(DiscService discService){this.discService = discService;}
@Override
public TransportProtocol.Response.Builder handle(ByteString requestPayload) throws InvalidProtocolBufferException {
try{
List<Disc> discs = discService.getAllDiscs();
DiscMessages.GetDiscsResponse.Builder responseBuilder = DiscMessages.GetDiscsResponse.newBuilder();
for (Disc disc : discs) {
DiscMessages.Disc discProto = DiscMapper.toProtobuf(disc);
responseBuilder.addDiscs(discProto);
}
DiscMessages.GetDiscsResponse getDiscsResponse = responseBuilder.build();
return TransportProtocol.Response.newBuilder()
.setPayload(getDiscsResponse.toByteString());
}catch (Exception e){
logger.error("Error getting discs", e);
return TransportProtocol.Response.newBuilder()
.setStatusCode(500)
.setPayload(ByteString.copyFromUtf8("Error: " + e.getMessage()));
}
}
}

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@ -0,0 +1,72 @@
package com.mediamanager.service.delegate.handler.disc;
import com.google.protobuf.ByteString;
import com.google.protobuf.InvalidProtocolBufferException;
import com.mediamanager.mapper.DiscMapper;
import com.mediamanager.model.Disc;
import com.mediamanager.protocol.TransportProtocol;
import com.mediamanager.protocol.messages.DiscMessages;
import com.mediamanager.service.delegate.ActionHandler;
import com.mediamanager.service.delegate.annotation.Action;
import com.mediamanager.service.disc.DiscService;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import java.util.Optional;
@Action("disc.update")
public class UpdateDiscHandler implements ActionHandler {
private static final Logger logger = LogManager.getLogger(UpdateDiscHandler.class);
private final DiscService discService;
public UpdateDiscHandler(DiscService discService) {
this.discService = discService;
}
@Override
public TransportProtocol.Response.Builder handle(ByteString requestPayload)
throws InvalidProtocolBufferException {
try {
DiscMessages.UpdateDiscRequest updateRequest =
DiscMessages.UpdateDiscRequest.parseFrom(requestPayload);
int id = updateRequest.getId();
Integer discNumber = updateRequest.getDiscNumber();
Integer albumId = updateRequest.getFkAlbumId() > 0 ? updateRequest.getFkAlbumId() : null;
Optional<Disc> discOpt = discService.updateDisc(
id,
discNumber,
albumId
);
if (discOpt.isEmpty()) {
logger.warn("Disc not found with ID: {}", id);
return TransportProtocol.Response.newBuilder()
.setStatusCode(404)
.setPayload(ByteString.copyFromUtf8("Disc not found"));
}
DiscMessages.Disc discProto = DiscMapper.toProtobuf(discOpt.get());
DiscMessages.UpdateDiscResponse updateResponse =
DiscMessages.UpdateDiscResponse.newBuilder()
.setDisc(discProto)
.build();
return TransportProtocol.Response.newBuilder()
.setPayload(updateResponse.toByteString());
} catch (IllegalArgumentException e) {
logger.error("Validation error", e);
return TransportProtocol.Response.newBuilder()
.setStatusCode(400)
.setPayload(ByteString.copyFromUtf8("Validation error: " + e.getMessage()));
} catch (Exception e) {
logger.error("Error updating disc", e);
return TransportProtocol.Response.newBuilder()
.setStatusCode(500)
.setPayload(ByteString.copyFromUtf8("Error: " + e.getMessage()));
}
}
}

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@ -0,0 +1,98 @@
package com.mediamanager.service.disc;
import com.mediamanager.model.Album;
import com.mediamanager.model.Disc;
import com.mediamanager.repository.AlbumRepository;
import com.mediamanager.repository.DiscRepository;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import java.util.List;
import java.util.Optional;
public class DiscService {
private static final Logger logger = LogManager.getLogger(DiscService.class);
private final DiscRepository repository;
private final AlbumRepository albumRepository;
public DiscService(DiscRepository repository, AlbumRepository albumRepository) {
this.repository = repository;
this.albumRepository = albumRepository;
}
public Disc createDisc(Integer discNumber, Integer albumId) {
logger.debug("Creating disc with number: {}", discNumber);
if (discNumber == null) {
throw new IllegalArgumentException("Disc number cannot be null");
}
if (albumId == null) {
throw new IllegalArgumentException("Album ID cannot be null");
}
Disc disc = new Disc();
disc.setDiscNumber(discNumber);
// Set Album (required)
Optional<Album> album = albumRepository.findById(albumId);
if (album.isEmpty()) {
throw new IllegalArgumentException("Album not found with id: " + albumId);
}
disc.setAlbum(album.get());
return repository.save(disc);
}
public List<Disc> getAllDiscs() {
logger.info("Getting all discs");
return repository.findAll();
}
public Optional<Disc> getDiscById(Integer id) {
if (id == null) {
throw new IllegalArgumentException("ID cannot be null");
}
logger.info("Getting disc by id: {}", id);
return repository.findById(id);
}
public Optional<Disc> updateDisc(Integer id, Integer discNumber, Integer albumId) {
if (id == null) {
throw new IllegalArgumentException("ID cannot be null");
}
if (discNumber == null) {
throw new IllegalArgumentException("Disc number cannot be null");
}
if (albumId == null) {
throw new IllegalArgumentException("Album ID cannot be null");
}
logger.info("Updating disc with id: {}", id);
Optional<Disc> existingDisc = repository.findById(id);
if (existingDisc.isEmpty()) {
logger.warn("Disc not found with id: {}", id);
return Optional.empty();
}
Disc disc = existingDisc.get();
disc.setDiscNumber(discNumber);
// Update Album
Optional<Album> album = albumRepository.findById(albumId);
if (album.isEmpty()) {
throw new IllegalArgumentException("Album not found with id: " + albumId);
}
disc.setAlbum(album.get());
Disc updatedDisc = repository.update(disc);
return Optional.of(updatedDisc);
}
public boolean deleteDisc(Integer id) {
if (id == null) {
throw new IllegalArgumentException("Disc id cannot be null");
}
logger.info("Deleting disc: {}", id);
return repository.deleteById(id);
}
}

54
src/main/proto/disc.proto Normal file
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@ -0,0 +1,54 @@
syntax = "proto3";
option java_package = "com.mediamanager.protocol.messages";
option java_outer_classname = "DiscMessages";
package mediamanager.messages;
message Disc{
int32 id = 1;
int32 disc_number = 2;
int32 fk_album_id = 3;
}
message CreateDiscRequest {
int32 disc_number = 1;
int32 fk_album_id = 2;
}
message CreateDiscResponse {
Disc disc = 1;
}
message GetDiscsRequest {
}
message GetDiscsResponse {
repeated Disc discs = 1;
}
message GetDiscByIdRequest {
int32 id = 1;
}
message GetDiscByIdResponse {
Disc disc = 1;
}
message UpdateDiscRequest {
int32 id = 1;
int32 disc_number = 2;
int32 fk_album_id = 3;
}
message UpdateDiscResponse {
Disc disc = 1;
}
message DeleteDiscRequest {
int32 id = 1;
}
message DeleteDiscResponse {
string message = 1;
}