com.ibm.passwordrules.standard
Class LengthConstraint

java.lang.Object
  |
  +--com.ibm.passwordrules.LexicalRule
        |
        +--com.ibm.passwordrules.standard.LengthConstraint
All Implemented Interfaces:
java.lang.Cloneable, Rule, java.io.Serializable

public class LengthConstraint
extends LexicalRule

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

See Also:
Serialized Form

Field Summary
static java.lang.String INCOMPATIBLE_LENGTH_RESTRICTIONS
           
static java.lang.String TOO_LONG
           
static java.lang.String TOO_SHORT
           
 
Fields inherited from class com.ibm.passwordrules.LexicalRule
DEFAULT_MAX_SEQUENTIAL_CHARACTERS, LOWER_CASE_ONLY, UPPER_CASE_ONLY
 
Constructor Summary
LengthConstraint()
           
LengthConstraint(int min, int max)
           
 
Method Summary
 void constrain(PasswordGenerator generator)
          Constrain the generation generator to values we know are valid.
 int getMax()
           
 int getMin()
           
 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_SHORT

public static java.lang.String TOO_SHORT

TOO_LONG

public static java.lang.String TOO_LONG

INCOMPATIBLE_LENGTH_RESTRICTIONS

public static java.lang.String INCOMPATIBLE_LENGTH_RESTRICTIONS
Constructor Detail

LengthConstraint

public LengthConstraint()

LengthConstraint

public LengthConstraint(int min,
                        int max)
Method Detail

getMax

public int getMax()

getMin

public int getMin()

constrain

public void constrain(PasswordGenerator generator)
Constrain the generation generator to values we know are valid.
Overrides:
constrain in class LexicalRule
Parameters:
generator - including a character generator to be constrained.

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:
true if password is valid
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.