UPDATE: IBM XMLSQC, xerces-131 and personal.xsd validates NOW! Re: personal.xsd example won't validate

["John L. Utz III" <ut...@singingfish.com>]

hello again everybody!

i have reworked the sample xerces personal.xsd to work with the XMLSchema
W3C rec. as reported by AlphaWorks XMLSchema Quality Checker and still
validate the existing personal-schema.xml that is shipped with
xerces-1.3.1

i hope this will be useful to somebody, tho' actual production uses of
XMLSchema seem to be awfully thin on the ground! :-)

i have attached the diff as a MIME attachment.

the changes were not that significant, but they are differences. they may
not be minimal, and if someone can point out a more minimal route to
success, i'd be interested in hearing about it.

tnx!

johnu

On Tue, 15 May 2001 neilg@ca.ibm.com wrote:

> Hi John and Curtis,
>
> You certainly can validate schemas with Xerces-j--personal.xsd included :
> -).  But to do so you need an instance document which references the
> schema; when validating the instance document Xerces will simultaneously
> validate the corresponding schema.
>
> Hopefully at some point Xerces will be able to validate a schema against te
> Schema for schemas, but we're not quite there yet.  Building in
> functionality to validate schemas alone is very important--especially if we
> want to have grammar caching--and that's definitely on the agenda for
> Xerces2.  But for the moment the best you can do is write a trivial
> instance document that references your schema and use that to call Xerces's
> schema validation capabilities; any help anyone can give to move things
> along would certainly be welcome!
>
> Cheers,
> Neil
>
>
> Neil Graham
> XML Parser Development
> IBM Toronto Lab
> Phone:  416-448-3519, T/L 778-3519
> E-mail:  neilg@ca.ibm.com
>
>
>
> "John L. Utz III" <ut...@singingfish.com> on 05/14/2001 06:09:07 PM
>
> Please respond to xerces-j-user@xml.apache.org
>
> To:   <xe...@xml.apache.org>
> cc:
> Subject:  Re: personal.xsd example won't validate
>
>
> mr brown;
>
> are you asking about validating XML *with* a schema ( as mr ashish alludes
> to in his response )
>
> or are you asking about validating the *schema*, which is what i think you
> are asking about?
>
> i thought that the beauty of schema is that you are supposed to be able to
> validate them.
>
> but when i make that statement, i see the glimmer of a halting problem
> here :-)
>
> so, if we *can* validate schema, what do we validate them against? another
> schema? a dtd?
>
> if it's against a schema, then do we need to know how to validate that
> schema against another schema?
>
> o heavens, my head hurts.
>
> is there somebody here who can tell me how all of this is supposed to
> work?
>
> 1. Can i validate a schema?
>
> 2. if so, how do i validate it? against what?
>
> tnx!
>
> johnu
>
> On Mon, 14 May 2001, Ashish wrote:
>
> > try using
> > bash-2.03$ java dom/DOMCount -v -n -s
> > ~/xerces-1_3_1/data/personal-schema.xml
> >
> >
> > ----- Original Message -----
> > From: "Curtis Brown" <cp...@iwant.com>
> > To: <xe...@xml.apache.org>
> > Sent: Monday, May 14, 2001 1:56 PM
> > Subject: personal.xsd example won't validate
> >
> >
> > > Using xerces 1.3.1, I try to run the DOMCount sample on the
> > > personal.xsd file from the data subdir, but I get the following
> > > errors:
> > >
> > > bash-2.03$ java dom/DOMCount -v -n -s ~/xerces-1_3_1/data/personal.xsd
> > > [Error] personal.xsd:2:53: General Schema Error: Grammar with uri 2:
> > http://www.w3.org/2000/10/XMLSchema , can not found.
> > > [Error] personal.xsd:2:53: Element type "schema" must be declared.
> > > [Error] personal.xsd:4:28: Element type "element" must be declared.
> > > ...
> > >
> > > Has anyone been able to validate personal.xsd?  Does anyone have an
> > > example of a schema that uses namespaces that also validates?
> > >
> > > Thanks,
> > > Curtis Brown
> > > cpbrown@iwant.com
> > >
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