[xml] libxml2 XML Schema validation limitation

["Allison Bloodworth" <abloodworth berkeley edu>]

Hi, 

We are using libxml2 in our PHP 5 application to do validation of an
imported XML document against an XML schema. I am finding that when I use
one XML Schema document which redefines some elements in a second XML Schema
document, validation always fails.

E.g. UCBEvents.xsd redefines elements in Events_1.9.xsd:

        <xs:redefine schemaLocation="Events_1.9.xsd">

Does anyone know what the limitations of libxml2 are in terms of XML Schema
validation? Is it unable to handle redefines?

Thanks very much, 

Allison Bloodworth
Principal Administrative Analyst
Technology Program Office
University of California, Berkeley
(415) 377-8243
abloodworth berkeley edu