org.hibernate.validator.constraints

Annotation Type LuhnCheck

@Documented
@Constraint(validatedBy={})
@Target(value={METHOD,FIELD,ANNOTATION_TYPE,CONSTRUCTOR,PARAMETER})
@Retention(value=RUNTIME)
public @interface LuhnCheck

Luhn algorithm check constraint.

Allows to validate that a series of digits pass the Luhn Modulo 10 checksum algorithm. The Luhn Mod10 is calculated by summing up the digits, with every odd digit (from right to left) value multiplied by 2, if the value is greater than 9 the the result digits a summed before the total summing.

The supported type is CharSequence. null is considered valid.

Author:

George Gastaldi, Hardy Ferentschik, Victor Rezende dos Santos

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
int	checkDigitPosition
int	endIndex
Class<?>[]	groups
boolean	ignoreNonDigitCharacters
String	message
Class<? extends Payload>[]	payload
int	startIndex

Element Detail

message

public abstract String message

Default:

"{org.hibernate.validator.constraints.LuhnCheck.message}"

groups

public abstract Class<?>[] groups

Default:

{}

payload

public abstract Class<? extends Payload>[] payload

Default:

{}

startIndex

public abstract int startIndex

Returns:

the start index (inclusive) for calculating the checksum. If not specified 0 is assumed.

Default:

0

endIndex

public abstract int endIndex

Returns:

the end index (exclusive) for calculating the checksum. If not specified the whole value is considered.

Default:

2147483647

checkDigitPosition

public abstract int checkDigitPosition

Returns:

The position of the check digit in the input. Per default it is assumed that the check digit is the last digit of the specified range. If set, the digit at the specified position is used as check digit. If set the following must hold true: checkDigitPosition > 0 && (checkDigitPosition < startIndex || checkDigitPosition >= endIndex.

Default:

-1

ignoreNonDigitCharacters

public abstract boolean ignoreNonDigitCharacters

Returns:

Whether non-digit characters in the validated input should be ignored (true) or result in a validation error (false). Note that the values given for startIndex, endIndex and checkDigitPosition need to take into account either digits only or all characters depending on the setting of this option.

Default:

true