It was just a thought so that the developer doesn't have to handle such
On Wed, Jun 24, 2009 at 11:19 AM, Hardy Ferentschik <
If you want to allow the empty string you can start your regular
with the 'empty' or operator '|', eg "|^.*foo.*$".
Now the string can be empty or anything with foo in it.
On Wed, 24 Jun 2009 09:47:56 +0200, Alaa Mohsen <alaa.mohsen(a)egyptdc.com>
> I just realized that PatternValidator checks if the String passed to it
> is null or not before checking it's validity, but it doesn't check if the
> String is empty. What if someone wants to put a regular expression
> constraint on a non mandatory field, and the framework he uses sets this
> empty field to an empty string? What do you think?