Package org.apache.commons.validator.routines.checkdigit

Class Modulus11i2to7CheckDigit

java.lang.Object

org.apache.commons.validator.routines.checkdigit.ModulusCheckDigit

org.apache.commons.validator.routines.checkdigit.Modulus11iWeightCheckDigit

org.apache.commons.validator.routines.checkdigit.Modulus11i2to7CheckDigit

All Implemented Interfaces:

Serializable, CheckDigit

public class Modulus11i2to7CheckDigit
extends Modulus11iWeightCheckDigit

Iceland Tax identification number (TIN) Check Digit calculation/validation (kennitala).

It uses weights calculated from right position i started from 2 to 7 and repeated when necessary.

See Wikipedia (is)r for more details.

Since:

2.10.7

Author:

EUG https://github.com/homebeaver

See Also:

• Serialized Form

Method Summary

Modifier and Type	Method	Description
static CheckDigit	getInstance()	Gets the singleton instance of this validator.
protected String	toCheckDigit(int charValue)	Convert an integer value to a check digit.
protected int	weightedValue(int charValue, int leftPos, int rightPos)	Calculates the weighted value of a character in the code at a specified position.

Methods inherited from class org.apache.commons.validator.routines.checkdigit.Modulus11iWeightCheckDigit

isValid

Methods inherited from class org.apache.commons.validator.routines.checkdigit.ModulusCheckDigit

calculate, calculateModulus, getCheckdigitLength, getModulus, sumDigits, toInt

Methods inherited from class java.lang.Object

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

Method Details

getInstance

public static CheckDigit getInstance()

Gets the singleton instance of this validator.

Returns:

A singleton instance of the class.

weightedValue

protected int weightedValue(int charValue,
 int leftPos,
 int rightPos)
                     throws CheckDigitException

Calculates the weighted value of a character in the code at a specified position.

TIN digits are weighted by their position from right to left. The weights are 2, 3, .. to 7, Then we repeat the weight 2, 3, ...

Overrides:

weightedValue in class Modulus11iWeightCheckDigit

Parameters:

charValue - The numeric value of the character.

leftPos - The position of the character in the code, counting from left to right

rightPos - The positionof the character in the code, counting from right to left

Returns:

The weighted value of the character.

Throws:

CheckDigitException - if an error occurs calculating the weighted value

toCheckDigit

protected String toCheckDigit(int charValue)
                       throws CheckDigitException

Convert an integer value to a check digit.

Note: this implementation only handles single-digit numeric values For non-numeric characters, override this method to provide integer-->character conversion.

Override to handle charValue 10.

Override to handle charValue 10.

Overrides:

toCheckDigit in class Modulus11iWeightCheckDigit

Parameters:

charValue - The integer value of the character

Returns:

The converted character

Throws:

CheckDigitException - if integer character value doesn't represent a numeric character