dmv.spring.demo.model.repository

Interface RoleRepository

All Known Implementing Classes:

RoleRepositoryJDBC

public interface RoleRepository

User's Role and its basic methods

Author:

dmv

Field Summary

Fields

Modifier and Type	Field and Description
static int	FULL_NAME_MAX_LENGTH Full name may have at most 50 characters
static int	SHORT_NAME_LENGTH Each Short Name identifier has exactly this length

Method Summary

Modifier and Type	Method and Description
Role	findByShortName(String shortName) Find and return Role object with given short name (case insensitive).
Set<User>	getUsers(Role role) Return all users that share given Role, or an empty Set if no such users.
static boolean	isValidShortName(String shortName) This method provides quick pre-check for given Short Name without looking in DB for existing names.

Field Detail

SHORT_NAME_LENGTH

static final int SHORT_NAME_LENGTH

Each Short Name identifier has exactly this length

See Also:

Constant Field Values

FULL_NAME_MAX_LENGTH

static final int FULL_NAME_MAX_LENGTH

Full name may have at most 50 characters

See Also:

Constant Field Values

Method Detail

isValidShortName

static boolean isValidShortName(String shortName)

This method provides quick pre-check for given Short Name without looking in DB for existing names. Just answering questions: is it not null, has it proper length or does it consist of letters.

Parameters:

shortName - a Short name to check

Returns:

true if name is valid, false if name is null or has wrong length or contains non-word characters

findByShortName

Role findByShortName(String shortName)

Find and return Role object with given short name (case insensitive).

Parameters:

shortName - Special acronym

Returns:

found Role object

Throws:

AccessDataBaseException - for DB issues

EntityDoesNotExistException - if Role with given name was not found

getUsers

Set<User> getUsers(Role role)

Return all users that share given Role, or an empty Set if no such users.

Parameters:

role - Users with what role need to be found

Returns:

all users with specified Role or empty Set

Throws:

IllegalArgumentException - if argument is null

EntityDoesNotExistException - if Role with given name was not found

AccessDataBaseException - for DB issues