com.samskivert.servlet.user
Class Username

java.lang.Object
  com.samskivert.servlet.user.Username

public class Username
extends Object

Allows us to require a valid username as a parameter without having to do the checking ourselves.

Field Summary

protected String	_username
static int	MAXIMUM_USERNAME_LENGTH The maximum allowable length of a username.
static int	MINIMUM_USERNAME_LENGTH The minimum allowable length of a username.
static String	NAME_REGEX The regular expression defining valid names.

Constructor Summary

Username(String username)
Creates a username instance.

Method Summary

String	getUsername() Returns the text of this username.
String	toString()
protected void	validateName(String username) Validates our username.

Methods inherited from class java.lang.Object

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

Field Detail

MINIMUM_USERNAME_LENGTH

public static final int MINIMUM_USERNAME_LENGTH

The minimum allowable length of a username.

See Also:

Constant Field Values

MAXIMUM_USERNAME_LENGTH

public static final int MAXIMUM_USERNAME_LENGTH

The maximum allowable length of a username.

See Also:

Constant Field Values

NAME_REGEX

public static final String NAME_REGEX

The regular expression defining valid names.

See Also:

Constant Field Values

_username

protected String _username

Constructor Detail

Username

public Username(String username)
         throws InvalidUsernameException

Creates a username instance.

Throws:

InvalidUsernameException

Method Detail

getUsername

public String getUsername()

Returns the text of this username.

toString

public String toString()

Overrides:

toString in class Object

validateName

protected void validateName(String username)
                     throws InvalidUsernameException

Validates our username. The default implementation requires that usernames consist only of characters that match the NAME_REGEX regular expression and be between MINIMUM_USERNAME_LENGTH and MAXIMUM_USERNAME_LENGTH characters.

Throws:

InvalidUsernameException