Package com.glowmart.shop_management.service.implementation

Class CategoryServiceImpl

java.lang.Object

com.glowmart.shop_management.service.implementation.CategoryServiceImpl

All Implemented Interfaces:

CategoryService

@Service
public class CategoryServiceImpl
extends Object
implements CategoryService

Implementation of CategoryService that provides business logic for managing Category entities.

This service handles creation, updating, deletion, and retrieval of categories. It performs validation on input data, ensures uniqueness of category names, and throws appropriate custom exceptions such as NotValidException, DuplicateException, and NotFoundException.

Constructor Summary

Constructors

Constructor	Description
CategoryServiceImpl()

Method Summary

Modifier and Type	Method	Description
CategoryDto	createCategory(CategoryDto categoryDto)	Creates a new category after validating its name and ensuring uniqueness.
CategoryDto	deleteCategoryById(String id)	Deletes a category by its ID.
List<CategoryDto>	getAllCategory()	Retrieves all categories from the repository.
CategoryDto	getCategoryById(String id)	Retrieves a category by its ID.
CategoryDto	getCategoryByName(String name)	Retrieves a category by its name.
CategoryDto	updateCategoryById(String id, CategoryDto categoryDto)	Updates an existing category by its ID.

Methods inherited from class java.lang.Object

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

Constructor Details

CategoryServiceImpl

public CategoryServiceImpl()

Method Details

createCategory

@Transactional
public CategoryDto createCategory(CategoryDto categoryDto)

Creates a new category after validating its name and ensuring uniqueness.

Specified by:

createCategory in interface CategoryService

Parameters:

categoryDto - the DTO containing category details

Returns:

the created CategoryDto

Throws:

NotValidException - if the category name is invalid

DuplicateException - if a category with the same name already exists

updateCategoryById

public CategoryDto updateCategoryById(String id,
 CategoryDto categoryDto)

Updates an existing category by its ID.

Specified by:

updateCategoryById in interface CategoryService

Parameters:

id - the ID of the category to update

categoryDto - the DTO containing updated category details

Returns:

the updated CategoryDto

Throws:

NotValidException - if the ID or category name is invalid

NotFoundException - if no category exists with the given ID

DuplicateException - if the new category name already exists or matches the old one

deleteCategoryById

public CategoryDto deleteCategoryById(String id)

Deletes a category by its ID.

Specified by:

deleteCategoryById in interface CategoryService

Parameters:

id - the ID of the category to delete

Returns:

the deleted CategoryDto

Throws:

NotValidException - if the ID is invalid

NotFoundException - if no category exists with the given ID

getAllCategory

public List<CategoryDto> getAllCategory()

Retrieves all categories from the repository.

Specified by:

getAllCategory in interface CategoryService

Returns:

a list of CategoryDto representing all categories

getCategoryById

public CategoryDto getCategoryById(String id)

Retrieves a category by its ID.

Specified by:

getCategoryById in interface CategoryService

Parameters:

id - the ID of the category to retrieve

Returns:

the found CategoryDto

Throws:

NotValidException - if the ID is invalid

NotFoundException - if no category exists with the given ID

getCategoryByName

public CategoryDto getCategoryByName(String name)

Retrieves a category by its name.

Specified by:

getCategoryByName in interface CategoryService

Parameters:

name - the name of the category to retrieve

Returns:

the found CategoryDto

Throws:

NotValidException - if the name is invalid

NotFoundException - if no category exists with the given name