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

Class TidITCheckDigit

java.lang.Object

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

org.apache.commons.validator.routines.checkdigit.TidITCheckDigit

All Implemented Interfaces:

Serializable, CheckDigit, IsoIecConstants

public final class TidITCheckDigit
extends ModulusCheckDigit
implements IsoIecConstants

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

Codice fiscale

See Wikipedia (it) for more details.

Since:

2.10.6

Author:

EUG https://github.com/homebeaver

See Also:

• Serialized Form

Field Summary

Fields inherited from interface org.apache.commons.validator.routines.checkdigit.IsoIecConstants

ALPHABETIC, ALPHABETIC23, ALPHANUMERIC, ALPHANUMERIC_PLUS_STAR, ALPHANUMERIC31, MODULUS_1271, MODULUS_23, MODULUS_31, MODULUS_37, MODULUS_661, MODULUS_97, NUMERIC, NUMERIC_PLUS_X, RADIX_10, RADIX_2, RADIX_26, RADIX_36

Method Summary

Modifier and Type	Method	Description
String	calculate(String code)	Calculate a modulus Check Digit for a code which does not yet have one.
static CheckDigit	getInstance()	Gets the singleton instance of this validator.
boolean	isValid(String code)	Validate a modulus check digit for a code.
protected String	toCheckDigit(int charValue)	Convert an integer value to a check digit.
protected int	toInt(char character, int leftPos, int rightPos)	Convert a character at a specified position to an integer value.
protected int	weightedValue(int charValue, int leftPos, int rightPos)	The weighted value of a character in the the value of the character.

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

calculateModulus, getCheckdigitLength, getModulus, sumDigits

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.

toInt

protected int toInt(char character,
 int leftPos,
 int rightPos)
             throws CheckDigitException

Description copied from class: ModulusCheckDigit

Convert a character at a specified position to an integer value.

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

Overrides:

toInt in class ModulusCheckDigit

Parameters:

character - The character to convert

leftPos - The position of the character in the code, counting from left to right (for identifiying the position in the string)

rightPos - The position of the character in the code, counting from right to left (not used here)

Returns:

The integer value of the character

Throws:

CheckDigitException - if character is non-numeric

weightedValue

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

The weighted value of a character in the the value of the character.

Specified by:

weightedValue in class ModulusCheckDigit

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 value of the character.

Throws:

CheckDigitException - if an error occurs calculating the weighted value

calculate

public String calculate(String code)
                 throws CheckDigitException

Calculate a modulus Check Digit for a code which does not yet have one.

Specified by:

calculate in interface CheckDigit

Overrides:

calculate in class ModulusCheckDigit

Parameters:

code - The code for which to calculate the Check Digit; the check digit should not be included

Returns:

The calculated Check Digit

Throws:

CheckDigitException - if an error occurs calculating the check digit

isValid

public boolean isValid(String code)

Validate a modulus check digit for a code.

Specified by:

isValid in interface CheckDigit

Overrides:

isValid in class ModulusCheckDigit

Parameters:

code - The code to validate

Returns:

true if the check digit is valid, otherwise false

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 get the non numeric check character

Overrides:

toCheckDigit in class ModulusCheckDigit

Parameters:

charValue - The integer value of the character

Returns:

The converted character

Throws:

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