>
> I've also had to revert to METS v1.3 because when I use v1.4, I get the
> following error message:
>
> Validation error in another file:
> "http://www.loc.gov/standards/mods/xlink.xsd"
>
> For "http://www.loc.gov/standards/mods/xlink.xsd" I get the following:
>
> attribute 'xlink:to' is already declared in schema document
> 'http://www.loc.gov/standards/mets/xlink.xsd'
>
Linda,
I am cross posting this to the MODS list, as it connects with a discussion
about xlink on the MODS list in early April. I wanted to respond as best I can
to the second question in your recent extension schema memo.
The METS on MODS schemas import what are I believe identical versions of the
xlink schema from different locations.(As Ray Denenberg noted in his MODS list
memo of April 4, w3c provides no normative version of the xlink schema).
Prior to version 4 of METS, METS and MODS assigned different target namespaces
to their respective versions of the xlink schema. But with version 4 of METS,
the xlink target namespaces are now the same. Rightly or wrongly, when the
2005 version of XMLSpy goes to validate METS documents with embedded MODS
metadata, it objects to the fact that two different schemas with same target
namespace are referenced. (I can see the logic to this, and believe that the
objections are probably justified. I don't believe that pre-2005 versions of
XMLSpy cared, however). The simplest solution to this problem--especially
if the two versions of the xlink schema are in fact identical and no one
perceives a need for future divergence--would be for METS and MODS to import
the same xlink schema from the same schemaLocation. The only way I can get
the most recent version of XMLSpy to validate my v.4 METS documents with
embedded MODS is to reference a local version of the mods schema that imports
the mets version of the xlink schema. But clearly this is not a workable
solution for a production environment.
Rick
--
Rick Beaubien
Software Engineer, Research & Development
Library Systems Office
University of California, Berkeley
Contact information:
88 Herrada Rd
Santa Fe, NM 87508
505-466-6630
-------------------------------------------------
This mail sent through IMP: http://horde.org/imp/
