pb138.service.facades

Interface CategoryFacade

All Known Implementing Classes:

CategoryFacadeImpl

public interface CategoryFacade

Interface for working with categories

Method Summary

Modifier and Type	Method and Description
Category	createOrUpdateCategory(String name, String desctription) Creates a new category, or updates it if another one with given name exist;
List<Category>	getAllCategories() Get all categories from db.
Category	getCategoryByName(String name) Find category with given name in db.

Method Detail

createOrUpdateCategory

Category createOrUpdateCategory(String name,
                                String desctription)
                         throws ServiceException

Creates a new category, or updates it if another one with given name exist;

Parameters:

name - name of the category

desctription - description of the category

Returns:

Category that was created/updated

Throws:

ServiceException - if something goes wrong on the db layer and service layer cannot deal with it

getAllCategories

List<Category> getAllCategories()

Get all categories from db.

Returns:

list of all categories

getCategoryByName

Category getCategoryByName(String name)

Find category with given name in db.

Parameters:

name - name of category

Returns:

category with given name or null if category with this name does not exist