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https://issues.apache.org/jira/browse/VALIDATOR-414?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebb resolved VALIDATOR-414.
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Resolution: Done
Added the functionality as part of VALIDATOR-415.
Probably no point in reworking existing validators now, but new ones can use
the new routines.
> Simplify CreditCard validation
> ------------------------------
>
> Key: VALIDATOR-414
> URL: https://issues.apache.org/jira/browse/VALIDATOR-414
> Project: Commons Validator
> Issue Type: Improvement
> Components: CreditCard
> Reporter: Sebb
>
> It's tricky validating Credit card numbers using only regular expressions.
> It would be a lot simpler to check the syntax (digits only) and length, and
> then validate the IIN (initial 6 digits) separately using numeric ranges.
> No need even to convert the strings to numbers, because string comparison
> would work just as well.
> Unfortunately CreditCardValidator uses the final class CodeValidator in its
> public API, but the latter can accept a RegexValidator which can be
> subclassed to provide the necessary functionality. This should be possible
> without further exposing the internal workings.
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