com.ibm.passwordrules.standard
Class NotReversed

java.lang.Object
  |
  +--com.ibm.passwordrules.BehavioralRule
        |
        +--com.ibm.passwordrules.standard.NotReversed

All Implemented Interfaces:

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

public class NotReversed

extends BehavioralRule

This class implements built-in rule for restricting passwords to be different then previously used passwords present in a reversed history list.

See Also:

Serialized Form

Field Summary

static java.lang.String

REUSED Constant representing a message key in a property file

Constructor Summary

NotReversed()
Default constructor.

NotReversed(int historyLength)
Constructor accepting int parameter specifying the length of the reversed password history.

Method Summary

int	getHistoryLength() Method obtains the length of revered password history.
boolean	join(Rule rule) Try to join the specified rule with this one.
void	setHistoryLength(int historyLength) Set the length of reveresed password history.
boolean	validate(java.lang.String password, ValidationInfo validationInfo) Validate the given password using the given validation info.

Methods inherited from class com.ibm.passwordrules.BehavioralRule

constrain, getParameter, setParameter, validateSafe

Methods inherited from class java.lang.Object

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

Field Detail

REUSED

public static final java.lang.String REUSED

Constant representing a message key in a property file

See Also:

Constant Field Values

Constructor Detail

NotReversed

public NotReversed()

Default constructor.

NotReversed

public NotReversed(int historyLength)

Constructor accepting int parameter specifying the length of the reversed password history.

Parameters:

historyLength - int value representing the number of consecutive historical passwords to be checked.

Method Detail

getHistoryLength

public int getHistoryLength()

Method obtains the length of revered password history.

Returns:

int value representing the password history length.

setHistoryLength

public void setHistoryLength(int historyLength)

Set the length of reveresed password history.

Parameters:

historyLength - int value representing the reveresed password history length.

validate

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

Validate the given password using the given validation info.

Specified by:

validate in interface Rule

Overrides:

validate in class BehavioralRule

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.

Specified by:

join in interface Rule

Overrides:

join in class BehavioralRule

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.