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RE: Interesting mailing list & a rare broadside

• To: "Thomas B. Passin" <tpassin@c...>,<xml-dev@l...>
• Subject: RE: Interesting mailing list & a rare broadside
• From: "Dare Obasanjo" <dareo@m...>
• Date: Wed, 5 Jun 2002 09:03:16 -0700
• Thread-index: AcIMlZgLWGvKdPRYTSGulz/jQCHWDAAE4jsQ
• Thread-topic: Interesting mailing list & a rare broadside

OK, I just talked to the dev about this and the bottom line is that
using the validateOnParse property turns on lax validation while using
the validate() method call utilizes strict validation. The primary
rationale for this is rooted in what James Clark pointed out in that
there is no way to specify what the root element should be in W3C XML
Schema. 

I'll have to investigate if this is pointed out in our docs and if not
make sure they are updated. 

-- 
PITHY WORDS OF WISDOM 
Never eat yellow snow.

This posting is provided "AS IS" with no warranties, and confers no
rights. 



> -----Original Message-----
> From: Thomas B. Passin [mailto:tpassin@c...] 
> Sent: Wednesday, June 05, 2002 6:33 AM
> To: xml-dev@l...
> Subject: Re:  Interesting mailing list & a rare broadside
> 
> 
> Now this is really frightening!  How could anyone possibly 
> outguess the system to know what the result would be???
> 
> BTW, I tried the example on the W3C Schema Validator, and it 
> reported that it passed, but using lax validation because 
> there was no declaration for element "bar".
> 
> Tom P
> 
> [Dare Obasanjo]
> 
> Changing the code to
> 
>   var schemas = new ActiveXObject("MSXML2.XMLSchemaCache.4.0");
>   schemas.add("http://www.example.org", "cyclic.xsd");
> 
>   var x = new ActiveXObject("MSXML2.DOMDocument.4.0");
>   x.async = false;
>   x.schemas = schemas;
>   x.validateOnParse = false; /* don't validate on parse */
>   x.load("example.xml");
> 
>   var vError = x.validate(); /* validate, grabbing error 
> object (if any) */
> 
>   /* print error message */
>   if(vError.reason != "")
>     WScript.Echo("invalid: " + vError.reason);
>   else
>     WScript.Echo("valid");
> 
> Leads to "invalid: Validate failed because the root element 
> had no associated DTD/schema" being displayed. Changing the 
> instance to
> 
>    <foo  xmlns="http://www.example.com"/>
> 
> results in successful validation.
> 
> --
> PITHY WORDS OF WISDOM
> Never eat yellow snow.
> 
> This posting is provided "AS IS" with no warranties, and 
> confers no rights.
> 
> 
> 
> > -----Original Message-----
> > From: James Clark [mailto:jjc@j...]
> > Sent: Tuesday, June 04, 2002 9:31 PM
> > To: Dare Obasanjo; Simon St.Laurent; xml-dev@l...
> > Subject: Re:  Interesting mailing list & a rare broadside
> >
> >
> >
> > > > I'm not sure how many people read those messages
> > directly, but I'd
> > > > certainly be unhappy if <bar /> got past the validator 
> when I was 
> > > > expecting <foo /> as in Clark's point 7.
> > >
> > > Both the XmlValidatingReader in the .NET framework and MSXML will 
> > > throw errors because no type definition exists for the <bar /> 
> > > element.
> >
> > One of the parsers I tried it with was the latest version of MSXML 
> > (which I generally find to be excellent, BTW).
> >
> > Here's example.xml:
> >
> > <bar/>
> >
> > Here's example.xsd:
> >
> > <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
> >   elementFormDefault="qualified"
> >   xmlns="http://www.example.com"
> >   targetNamespace="http://www.example.com">
> >
> > <xs:element name="foo">
> >   <xs:complexType/>
> > </xs:element>
> >
> > </xs:schema>
> >
> > Here's the example.js I used to perform the validation:
> >
> > var schemas = new ActiveXObject("MSXML2.XMLSchemaCache.4.0");
> > schemas.add("http://www.example.com", "example.xsd");
> >
> > var x = new ActiveXObject("MSXML2.DOMDocument.4.0");
> > x.async = false;
> > x.schemas = schemas;
> > x.validateOnParse = true;
> > x.load("example.xml");
> > if (x.parseError.errorCode != 0)
> >   WScript.Echo("invalid: " + x.parseError.reason);
> > else
> >   WScript.Echo("valid");
> >
> > When I run example.js, it says "valid".  Note that if you add 
> > xmlns="http://www.example.com" to <bar/>, then it does report it as 
> > invalid.
> >
> > Is there something else I should have done to make it report the 
> > example as invalid?
> >
> > James
> >
> >
> >
> >
> >
> 
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