ABANumberValidator (Apache BVal :: Extras 3.0.2 API)

java.lang.Object
- org.apache.bval.extras.constraints.checkdigit.ModulusValidator<ABANumber>
- - org.apache.bval.extras.constraints.checkdigit.ABANumberValidator

All Implemented Interfaces:

jakarta.validation.ConstraintValidator<ABANumber,CharSequence>
```
public final class ABANumberValidator
extends ModulusValidator<ABANumber>
```
Modulus 10 ABA Number (or Routing Transit Number (RTN)) Check Digit calculation/validation.
ABA Numbers (or Routing Transit Numbers) are a nine digit numeric code used to identify American financial institutions for things such as checks or deposits (ABA stands for the American Bankers Association).
Check digit calculation is based on modulus 10 with digits being weighted based on their position (from right to left) as follows:
- Digits 1, 4 and & 7 are weighted 1
- Digits 2, 5 and & 8 are weighted 7
- Digits 3, 6 and & 9 are weighted 3
For further information see Wikipedia - Routing transit number.

Constructor Summary

Constructors
Constructor Description

ABANumberValidator()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`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.bval.extras.constraints.checkdigit.ModulusValidator
initialize, isValid, sumDigits, toInt

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ABANumberValidator
```
public ABANumberValidator()
```
- Method Detail
  - weightedValue
```
protected int weightedValue(int charValue,
                            int leftPos,
                            int rightPos)
                     throws Exception
```
    Calculates the weighted value of a character in the code at a specified position.
    ABA Routing numbers are weighted in the following manner:
    left position: 1 2 3 4 5 6 7 8 9 weight: 3 7 1 3 7 1 3 7 1
    Calculates the weighted value of a character in the code at a specified position.
    Some modulus routines weight the value of a character depending on its position in the code (e.g. ISBN-10), while others use different weighting factors for odd/even positions (e.g. EAN or Luhn). Implement the appropriate mechanism required by overriding this method.
    Specified by:
    
    weightedValue in class ModulusValidator<ABANumber>
    
    Parameters:
    
    charValue - The numeric value of the character
    
    leftPos - The position of the character in the code, counting from left to right
    
    rightPos - The position of the character in the code, counting from right to left
    
    Returns:
    
    The weighted value of the character
    
    Throws:
    
    Exception