| From: | Gregory Stark <stark(at)enterprisedb(dot)com> |
|---|---|
| To: | Andreas 'ads' Scherbaum <adsmail(at)wars-nicht(dot)de> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Validating problem in the isn contrib module |
| Date: | 2009-03-06 10:50:41 |
| Message-ID: | 87zlfyc4ce.fsf@oxford.xeocode.com |
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| Lists: | pgsql-hackers |
Andreas 'ads' Scherbaum <adsmail(at)wars-nicht(dot)de> writes:
> The validator function should use the weak mode for itself to return
> 'f' in case of invalid input. It cannot be the users job to make sure a
> validator function is working as expected.
Well the input function is being called before the validator function ever
gets a chance to act. The validator function receives an already-formed isbn13
datum.
Is there an is_valid() which takes text input? Perhaps there should be --
though I think it would have to be isbn_is_valid() or something like that.
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
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