org.hibernate.validator.internal.constraintvalidators.hv

Class LuhnCheckValidator

java.lang.Object

org.hibernate.validator.internal.constraintvalidators.hv.ModCheckBase

org.hibernate.validator.internal.constraintvalidators.hv.LuhnCheckValidator

All Implemented Interfaces:

ConstraintValidator<LuhnCheck,CharSequence>

public class LuhnCheckValidator
extends ModCheckBase
implements ConstraintValidator<LuhnCheck,CharSequence>

Luhn algorithm checksum validator http://en.wikipedia.org/wiki/Luhn_algorithm http://en.wikipedia.org/wiki/Check_digit

Author:

George Gastaldi, Hardy Ferentschik, Victor Rezende dos Santos

Constructor Summary

Constructors

Constructor and Description
LuhnCheckValidator()

Method Summary

Modifier and Type	Method and Description
void	initialize(LuhnCheck constraintAnnotation) Initializes the validator in preparation for ConstraintValidator.isValid(Object, ConstraintValidatorContext) calls.
boolean	isCheckDigitValid(List<Integer> digits, char checkDigit) Validate check digit using Luhn algorithm

Methods inherited from class org.hibernate.validator.internal.constraintvalidators.hv.ModCheckBase

extractDigit, initialize, isValid

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.validation.ConstraintValidator

isValid

Constructor Detail

LuhnCheckValidator

public LuhnCheckValidator()

Method Detail

initialize

public void initialize(LuhnCheck constraintAnnotation)

Description copied from interface: ConstraintValidator

Initializes the validator in preparation for ConstraintValidator.isValid(Object, ConstraintValidatorContext) calls. The constraint annotation for a given constraint declaration is passed.

This method is guaranteed to be called before any use of this instance for validation.

Specified by:

initialize in interface ConstraintValidator<LuhnCheck,CharSequence>

Parameters:

constraintAnnotation - annotation instance for a given constraint declaration

isCheckDigitValid

public boolean isCheckDigitValid(List<Integer> digits,
                                 char checkDigit)

Validate check digit using Luhn algorithm

Specified by:

isCheckDigitValid in class ModCheckBase

Parameters:

digits - The digits over which to calculate the checksum

checkDigit - the check digit

Returns:

true if the luhn check result matches the check digit, false otherwise