re: [xml] Schema validity failure for valid document

[cazic gmx net]

Hi,

(sorry this is a hand-made reply, so it might look funny)

On Fri, 31 Dec 2004 16:13:14 -0500 Scott Lawrence wrote:

> I've attached a simplified version of a schema I'm working on and an
> instance document that should validate against it.  I can't seem to
> figure out how to get 'xmllint -schema' to accept this. 

> I ran these same two documents through the LTG validator at
> http://www.w3.org/2001/03/webdata/xsv and it accepts this document as
> valid against the schema.

> I've tried this both with version 2.6.16 (on FC2 linux) and with a
> version built from CVS on 12/31/2004, both with the same result:
 
> call_event_examples.xml:3: element call_event: Schemas validity error :
> Element 'call_event' [CT local]: The element content is not valid.

There was a tiny enhancement in content model error reports in 
xmlschemas.c rev. 1.92; but since you builded as well from CVS on 
12/31/2004, you already noticed.

[...]

>  <element name='call_event'>
>     <complexType>
>       <sequence>
>             <element ref='cse:call_failure'/>
>       </sequence>
>     </complexType>
>   </element>
   
[...]

> <call_event_sequence
>  xmlns='http://www.sipfoundry.org/sipX/schema/xml/cse-01-00'>
> <call_event>
>   <observer>out1.sipxchange.example.com</observer>
>   <obs_seq>290</obs_seq>
>   <obs_time>2003-08-15T17:27:30.023Z</obs_time>
>   <call_failure>
>     <call>
>       <dialog>
>         <call_id>call-1036576858-13 10 1 1 252</call_id>
>         <from_tag>1c954235820</from_tag>
>       </dialog>
>       <from>"Scott"&lt;sip:scott-ix kathmandu example > 
> com&gt;;tag=1c954235820</from>
>       <to>Some Phone&lt;sip:162 example com&gt;transport=tcp</to>
>     </call>
>   </call_failure>
> </call_event>
> </call_event_sequence>

Sure there was a glitch in the simplification process of your 
schema/instance: it declares <call_failure> as the only child of 
<call_event>. Additionally the position of <to> and <from> in <call>
need to be swaped.
With this one I get:

P:\libxml2-lab\tests>xmllint --noout --schema test.xsd test.xml
Element 'observer': This element is not expected.
Element 'obs_seq': This element is not expected.
Element 'obs_time': This element is not expected.
Element 'call_failure': This element is not expected.
test.xml fails to validate

P:\libxml2-lab\tests>xmllint --version
xmllint: using libxml version 20616CVS2268
   compiled with: DTDValid FTP HTTP HTML C14N Catalog XPath XPointer
XInclude Iconv MemDebug Unicode Regexps Automata Schemas

The error report: "Element 'call_failure': This element is not expected"
is due to the automaton context, which gets an "invalid" status on
the first non-matching element (<observer> in this case); this could
be fixed by resetting the status through a not yet existent API call 
(the regexp struct is not public).

Please resend the fixed schema/instance.

Regards,

Kasimier