RE: [xml] validating ENTITY attributes (DTD/W3C Schema)

["Buchcik, Kasimier" <k buchcik 4commerce de>]

> -----Original Message-----
> From: xml-bounces gnome org [mailto:xml-bounces gnome org] On 
> Behalf Of Stephen J. Smith
> Sent: Wednesday, May 17, 2006 7:42 PM
> To: xml gnome org
> Subject: [xml] validating ENTITY attributes (DTD/W3C Schema)
>
> I'm trying to validate xml with ENTITY attributes against a w3c schema
> using xmllint.  While researching my problem I found this behavior:
>
> $ cat foo.xml
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE r SYSTEM "foo.dtd" [
> <!NOTATION jpeg PUBLIC "JPG" "JPG">
> <!ENTITY foo SYSTEM "foo.jpg" NDATA jpeg>
> ]>
> <r entity="foo"/>
>
> $ cat foo.dtd
> <!ELEMENT r EMPTY>
> <!ATTLIST r entity ENTITY #REQUIRED>
>
> $ xmllint --noout --valid foo.xml
>
> $ xmllint --noout --dtdvalid foo.dtd foo.xml
> foo.xml:0: validity error : ENTITY attribute entity reference 
> an unknown entity "foo"
> Document foo.xml does not validate against foo.dtd
>
> Why does it validate with --valid, but not with with --dtdvalid?
>
> Ok, back to validating against a schema:
>
> $ cat foo.xsd
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";>
>   <xs:element name="r">
>     <xs:complexType>
>       <xs:attribute name="entity" type="xs:ENTITY"/>
>     </xs:complexType>
>   </xs:element>
> </xs:schema>
>
> $ xmllint --noout --schema foo.xsd foo.xml
> foo.xml:6: element r: Schemas validity error : Element 'r', 
> attribute 'entity': 'foo' is not a valid value of the atomic 
> type 'xs:ENTITY'.
> foo.xml fails to validate
>
> What have I done wrong?  Or should I file a bug?

At least with Saxon the scenario validates; although it even validates
if I remove the DOCTYPE from the instance, so Saxon might just let
through any values defined to be of type xs:ENTITY.

Filing a bug would be great.

Regards,

Kasimier