изменены классы категорий

backend/src/main/java/com/example/backend/categories/api/CategorieDTO.java

@@ -3,14 +3,18 @@ package com.example.backend.categories.api;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
 
 public class CategorieDTO {
 
+    @JsonProperty(access = JsonProperty.Access.READ_ONLY)
     private Integer id;
 
     @NotBlank
+    @Size(min = 5, max = 50)
     private String name;
 
+    @Size(min = 5, max = 50)
     private String image;
 
     @JsonProperty(access = JsonProperty.Access.READ_ONLY)

backend/src/main/java/com/example/backend/categories/model/CategorieEntity.java

@@ -4,9 +4,18 @@ import java.util.Objects;
 
 import com.example.backend.core.model.BaseEntity;
 
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "categories")
 public class CategorieEntity extends BaseEntity {
 
+    @Column(nullable = false, unique = true, length = 15)
     private String name;
+
+    @Column(nullable = true)
     private String image;
 
     public CategorieEntity() {
@@ -14,7 +23,6 @@ public class CategorieEntity extends BaseEntity {
     }
 
     public CategorieEntity(Integer id, String name, String image) {
-        super(id);
         this.name = name;
         this.image = image;
     }

backend/src/main/java/com/example/backend/categories/repository/CategorieRepository.java

@@ -1,11 +1,11 @@
 package com.example.backend.categories.repository;
 
-import org.springframework.stereotype.Repository;
+import java.util.Optional;
+
+import org.springframework.data.repository.CrudRepository;
 
 import com.example.backend.categories.model.CategorieEntity;
-import com.example.backend.core.repository.MapRepository;
-
-@Repository
-public class CategorieRepository extends MapRepository<CategorieEntity> {
 
+public interface CategorieRepository extends CrudRepository<CategorieEntity, Integer> {
+    Optional<CategorieEntity> findByNameIgnoreCase(String name);
 }

backend/src/main/java/com/example/backend/categories/service/CategorieService.java

@@ -3,11 +3,15 @@ package com.example.backend.categories.service;
 import java.util.List;
 import java.util.Optional;
 
-import org.springframework.stereotype.Service;
+import java.util.stream.StreamSupport;
 
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.example.backend.core.errors.NotFoundException;
 import com.example.backend.categories.model.CategorieEntity;
 import com.example.backend.categories.repository.CategorieRepository;
-import com.example.backend.core.errors.NotFoundException;
+
 
 @Service
 public class CategorieService {
@@ -18,28 +22,42 @@ public class CategorieService {
         this.repository = repository;
     }
 
-    public List<CategorieEntity> getAll() {
+    private void checkName(String name) {
-        return repository.getAll();
+        if (repository.findByNameIgnoreCase(name).isPresent()) {
+            throw new IllegalArgumentException(
+                    String.format("Type with name %s is already exists", name));
+        }
     }
 
+    @Transactional(readOnly = true)
+    public List<CategorieEntity> getAll() {
+        return StreamSupport.stream(repository.findAll().spliterator(), false).toList();
+    }
+
+    @Transactional(readOnly = true)
     public CategorieEntity get(Integer id) {
-        return Optional.ofNullable(repository.get(id)).orElseThrow(() -> new NotFoundException(id));
+        return repository.findById(id).orElseThrow(() -> new NotFoundException(id));
     }
 
     public CategorieEntity create(CategorieEntity entity) {
-        return repository.create(entity);
+        if(entity == null){
+            throw new IllegalArgumentException("Сущность не найдена");
+        }
+        checkName(entity.getName());
+        return repository.save(entity);
     }
 
     public CategorieEntity update(Integer id, CategorieEntity entity) {
         final CategorieEntity existsentity = get(id);
         existsentity.setName(entity.getName());
         existsentity.setImage(entity.getImage());
-        return repository.update(existsentity);
+        return repository.save(existsentity);
     }
 
     public CategorieEntity delete(Integer id) {
         final CategorieEntity existsentity = get(id);
-        return repository.delete(existsentity);
+        repository.delete(existsentity);
+        return existsentity;
     }
 
 }