Bug 868016

The current EPP 5.2.2 has a default rule to validate email address. Here is the source code http://anonsvn.jboss.org/repos/gatein/epp/portal/tags/EPP_5_2_2_GA/webui/core/src/main/java/org/exoplatform/webui/form/validator/EmailAddressValidator.java

 private boolean validateLocalPart(char[] localPart)
   {
      if(localPart.length == 0 || !Character.isLetter(localPart[0]) || !Character.isLetterOrDigit(localPart[localPart.length - 1]))
      {
         return false;
      }

      for(int i = 1; i < localPart.length -1; i++)
      {
         char c = localPart[i];
         char next = localPart[i+1];

         if(Character.isLetterOrDigit(c) || (isLocalPartSymbol(c) && Character.isLetterOrDigit(next)))
         {
            continue;
         }
         else
         {
            return false;
         }
      }
      return true;
   }

It only allow letter, digit and symbols "." and "_" in the local part. It also forces the first character to be letter and the last character to be letter or digit.

1) Can we review the validation rule? Are we following any spec for the validation rule?

2) Can we create a mechanism in EPP 6 that allows user to plug in their own custom validation rule such as regular expression as we've done for username/groupmembership?