com.ibm.passwordrules.standard
Class MaxLengthConstraint

java.lang.Object
  |
  +--com.ibm.passwordrules.LexicalRule
        |
        +--com.ibm.passwordrules.standard.MaxLengthConstraint

All Implemented Interfaces:

java.lang.Cloneable, Rule, java.io.Serializable

public class MaxLengthConstraint

extends LexicalRule

This class implements built-in rule for restricting the maximum length of a password.

See Also:

Serialized Form

Field Summary

static java.lang.String

TOO_LONG Constant representing a message key in a property file

Fields inherited from class com.ibm.passwordrules.LexicalRule

DEFAULT_MAX_SEQUENTIAL_CHARACTERS, LOWER_CASE_ONLY, UPPER_CASE_ONLY

Constructor Summary

MaxLengthConstraint()
Default constructor.

MaxLengthConstraint(int max)
Constructor acepting int parameter representing the maximum value of the length constraint.

Method Summary

void	constrain(PasswordGenerator generator) Constrain the password generator to the allowed values.
int	getMax() Return maximum value of the length constraint.
boolean	join(Rule rule) Try to join the specified rule with this one.
boolean	validate(java.lang.String password, ValidationInfo validationInfo) Validate the given password using the given validation info.

Methods inherited from class com.ibm.passwordrules.LexicalRule

getParameter, setParameter, validateSafe

Methods inherited from class java.lang.Object

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

Field Detail

TOO_LONG

public static final java.lang.String TOO_LONG

Constant representing a message key in a property file

See Also:

Constant Field Values

Constructor Detail

MaxLengthConstraint

public MaxLengthConstraint()

Default constructor.

MaxLengthConstraint

public MaxLengthConstraint(int max)

Constructor acepting int parameter representing the maximum value of the length constraint.

Parameters:

max - Maximum value of the length constraint.

Method Detail

getMax

public int getMax()

Return maximum value of the length constraint.

Returns:

int representing maximum value of the length constraint.

constrain

public void constrain(PasswordGenerator generator)

Constrain the password generator to the allowed values.

Specified by:

constrain in interface Rule

Overrides:

constrain in class LexicalRule

Parameters:

generator - including a character template to constrain.

validate

public boolean validate(java.lang.String password,
                        ValidationInfo validationInfo)
                 throws InvalidPasswordException

Validate the given password using the given validation info.

Parameters:

validationInfo - contains contextual information about the password being validated.

password - Password to validate.

Returns:

always return true

Throws:

InvalidPasswordException - thrown when password is invalid.

join

public boolean join(Rule rule)
             throws IncompatibleRulesException

Try to join the specified rule with this one. The more restrictive rule takes precedence.

Parameters:

rule - The rule to be joined with this one.

Returns:

True if the rule was successfully joined.

Throws:

IncompatibleRulesException - Thrown when given rule cannot be joined because it is not compatible.