Re: equivalent of NOT NULL for element values?

> > what about using facet minLength in a restriction ?

Would the pattern facet do the trick for you?

start =
  element some_element {
    xsd:nonNegativeInteger { pattern = "[0-9]+" }
  }
  

> I'd made the mistake of thinking that the validator would give the
> same error when integer fields where empty (which was my main
> concern). I'd implemented the minLength restriction on strings, but
> had no solutions for integer types - shows you what testing can
> achieve ;). Is there an all-type encompassing attribute which
> requires that an element have a value (regardless of whether that
> value then validates based on restrictions etc...)?