pb138.service.services

Interface CategoryService

All Known Implementing Classes:

CategoryServiceImpl

public interface CategoryService

Class for working with categories

Method Summary

Modifier and Type	Method and Description
long	create(Category category) Creates new category
void	delete(Category category) Deletes category
List<Category>	getAllCategories() Returns list of all categories
Category	getById(long id) Return category of given id
Category	getByName(String name) Return category of given name
void	update(Category category) Updates category

Method Detail

create

long create(Category category)
     throws ServiceException

Creates new category

Parameters:

category - Category to be created

Returns:

id of created category

Throws:

ServiceException - when there are any unexpected problems

delete

void delete(Category category)
     throws ServiceException

Deletes category

Parameters:

category - Category to be deleted

Throws:

ServiceException - when there are any unexpected problems

update

void update(Category category)
     throws ServiceException

Updates category

Parameters:

category - Category to be updated

Throws:

ServiceException - when there are any unexpected problems

getById

Category getById(long id)

Return category of given id

Parameters:

id - Id of category

Returns:

category with this id, NULL if not present

getByName

Category getByName(String name)

Return category of given name

Parameters:

name - Name of category

Returns:

category with this name, NULL if not present

getAllCategories

List<Category> getAllCategories()

Returns list of all categories

Returns:

list of all categories