[relax-ng] Re: Confirmation needed: string values and attributes

[Kohsuke Kawaguchi <kohsuke.kawaguchi@sun.com>]

> Hi,
> 
> I would just like to get a confirmation (to my reading of the spec
> confirmed by the behavior of Jing) that schemas that cannot validate any
> instance document can be achieved by specifying a value with linefeeds
> in an attribute.
> 
> For instance:
> 
> <element xmlns="http://relaxng.org/ns/structure/1.0"; name="foo">
>  <attribute name="bar">
>   <value type="string">
> 		Can't be matched.
> 	</value>
>  </attribute>
> </element>
> 
> is a schema which specifies that the value of the attribute bar must
> contain line feeds which cannot happen per the normalization done on
> attribute values in XML 1.0.
> 
> The schema is thus correct but there are no documents which can be valid
> per this schema.

An easier way to get the same effect is just to write:

<notAllowed xmlns="http://relaxng.org/ns/structure/1.0"/>

This is a correct schema that accepts nothing.

regards,
--
Kohsuke KAWAGUCHI
Sun Microsystems                   kohsuke.kawaguchi@sun.com