Hi Bob I understand, but then, as the XML Schema normative lives in the "http://www.w3.org/2001/XMLSchema"; namespace, should it not confirm to itself? Any errors while validating the XML Schema normative would either denote inconsistencies in the schema or errors in the parser.
Anyway, I am actually not interested 'in validating' the XML Schema, I am just interested to parse it in order to get a representation of it. In order to parse it I create a xerces SchemaGrammar object, so I need to 'validate' it ... BTW, I had a look at the eclipse xsd project ... Does not look too bad and as far as I can see the model used is quite intuitive, at least much more than the xerses stuff. But, to download eclipse (50MB!) in order to just compile it seems a little bit like overkill to me as I am just interested in a library which I may need to bundle with additional software anyway. But I promise to give it a try whenever I have time to watch my download window for a couple of hours. Regards Alex -----Original Message----- From: Bob Schloss [mailto:[EMAIL PROTECTED] Sent: Monday, 4 November 2002 4:14 To: [EMAIL PROTECTED] Subject: Re: XMLSchema for XMLSchema validation Alex, Because many of the constraints that an XML Schema must conform to cannot be expressed in terms of structural or syntactic constraints expressable in an XML Schema, if you succeed at what you are doing you will still not know if the input schema you processed is really totally correct. There are several programs that do "validation plus extra analysis" of XML Schemas to determine if they are legal. One that I have been involved in creating is the IBM XML Schema Quality Checker, which you can find at http://www.alphaworks.ibm.com/tech/xmlsqc . These kinds of programs, because they are not designed to being validation of document instances during parsing, can do the most expensive checks that validating parsers like Xerces-J sometimes leave out. Good luck, Bob XML/XSL Transformational Systems IBM Thomas J. Watson Research Center Yorktown Heights, New York, USA "Alex Chatziparaskewas" To: "Xerces-J-User" <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> cc: Subject: XMLSchema for XMLSchema validation 11/02/2002 08:03 PM Please respond to xerces-j-user Hi there I am trying to validate a XMLSchema for XMLSchema against itself using xerces 2.2.0. But so far I have not been successful. I tried the 'current' one from the w3c website first and ended up with errors like to following ... [Error] datatypes.xsd:80:45: st-props-correct.4.1: The type definition is not a valid restriction with repect to the base type 'xs:anySimpleType'. [Error] datatypes.xsd:80:45: cos-applicable-facets: Facet 'whiteSpace' is not allowed by this type. [ I tried another one but it failed as well. Of course I have found the errata section to the 'current' XMLSchema normative and I have to confess that I am far too lazy to fix everything by myself (success not guaranteed as well ...). But, of course I can not be the first one who tried this task. There must be a valid 'schema' flying around. But where is it? Regards Alex --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
