Package org.hibernate.validator.internal.util

Class ModUtil

java.lang.Object

org.hibernate.validator.internal.util.ModUtil

public final class ModUtil
extends Object

Helper class for modulo 10/11.

Author:

Hardy Ferentschik

Method Summary

Modifier and Type	Method	Description
static int	calculateLuhnMod10Check(List<Integer> digits)	Calculate Luhn Modulo 10 checksum (Luhn algorithm implementation)
static int	calculateMod10Check(List<Integer> digits, int multiplier, int weight)	Calculate Generic Modulo 10 checksum
static int	calculateMod11Check(List<Integer> digits)	Calculate Modulo 11 checksum assuming that the threshold is Integer.MAX_VALUE
static int	calculateMod11Check(List<Integer> digits, int threshold)	Calculate Modulo 11 checksum
static int	calculateModXCheckWithWeights(List<Integer> digits, int moduloParam, int threshold, int... weights)	Calculate Modulo moduloParam checksum with given weights.

Methods inherited from class java.lang.Object

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

Method Detail

calculateLuhnMod10Check

public static int calculateLuhnMod10Check(List<Integer> digits)

Calculate Luhn Modulo 10 checksum (Luhn algorithm implementation)

Parameters:

digits - The digits over which to calculate the checksum

Returns:

the result of the mod10 checksum calculation

calculateMod10Check

public static int calculateMod10Check(List<Integer> digits,
                                      int multiplier,
                                      int weight)

Calculate Generic Modulo 10 checksum

Parameters:

digits - The digits over which to calculate the checksum

multiplier - Multiplier used for the odd digits in the algorithm

weight - Multiplier used for the even digits in the algorithm

Returns:

the result of the mod10 checksum calculation

calculateMod11Check

public static int calculateMod11Check(List<Integer> digits,
                                      int threshold)

Calculate Modulo 11 checksum

Parameters:

digits - the digits for which to calculate the checksum

threshold - the threshold for the Mod11 algorithm multiplier growth

Returns:

the result of the mod11 checksum calculation

calculateMod11Check

public static int calculateMod11Check(List<Integer> digits)

Calculate Modulo 11 checksum assuming that the threshold is Integer.MAX_VALUE

Parameters:

digits - the digits for which to calculate the checksum

Returns:

the result of the mod11 checksum calculation

calculateModXCheckWithWeights

public static int calculateModXCheckWithWeights(List<Integer> digits,
                                                int moduloParam,
                                                int threshold,
                                                int... weights)

Calculate Modulo moduloParam checksum with given weights. If no weights are provided then weights similar to Modulo 11 checksum will be used. In case when there will be not enough weights provided the ones provided will be used in a looped manner.

Parameters:

digits - the digits for which to calculate the checksum

moduloParam - modulo parameter to be used

weights - weights for the sum.

Returns:

the result of mod checksum calculation