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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: qname resolution question
I suggest mailing bug reports to the Xerces team and Henry Thompson so the
issue can be resolved in both parsers.
--
THINGS TO DO IF I BECOME AN EVIL OVERLORD #18
I will not have a son. Although his laughably under-planned attempt to usurp
power would easily fail, it would provide a fatal distraction at a crucial
point in time.
----- Original Message -----
From: "Takuki Kamiya" <takuki@p...>
To: "Dare Obasanjo" <kpako@y...>; <xml-dev@l...>
Sent: Friday, December 28, 2001 7:45 PM
Subject: Re: qname resolution question
> Hi Dare,
>
> Thanks for checking with .NET XML Reader.
>
> My schema processor which rejects such schemas seems to be
> consistent with MS behaviour. :-) It is sometimes difficult to write a
> XML schema which passes validation by all processors out there,
> which I hope will be improved.
>
> -Takuki Kamiya
>
>
> ----- Original Message -----
> From: "Dare Obasanjo" <kpako@y...>
> To: "Takuki Kamiya" <takuki@p...>; <xml-dev@l...>
> Sent: Friday, December 28, 2001 9:42 PM
> Subject: Re: qname resolution question
>
>
> > I tried the schema on MSFT .NET's XmlValidatingReader and got the
> following
> > message
> >
> > ERROR: The 'http://www.w3.org/2001/XMLSchema:documentBody' element is
> not
> > declared.
> >
> > which I think is correct and the wrong answer is that being given by XSV
> and
> > Xerces.
> >
> >
> > From section 3.15.3 [Constraints on XML Representations of Schemas] of the
> W3C
> > XML schemas Structures recommnedation, part 2.2.1 states that
> >
> > "Where the type of an attribute information item in a document involved in
> > ·validation· is identified as ·QName·, its ·actual value· is composed of a
> > local name and a namespace name. Its ·actual value· is determined based
> on
> > its ·normalized value· and the containing element information item's
> [in-scope
> > namespaces] following [XML-Namespaces]:
> >
> > The appropriate case among the following must be true:
> >
> > 2 otherwise (its ·normalized value· is unprefixed) all of the following
> must
> > be true:
> > 2.1 its ·local name· is its ·normalized value·.
> > 2.2 The appropriate case among the following must be true:
> > 2.2.1 If there is a namespace in the [in-scope namespaces] whose [prefix]
> has
> > no value, then its ·namespace name· is the [namespace name] of that
> > namespace." [0]
> >
> > So from the above, this seems to mean when trying to resolve the qname of
> > documentBody in the ref attribute of the element it ends up as
> > http://www.w3.org/2001/XMLSchema:documentBody.
> >
> >
> >
> > But looking at section 3.3.2 [XML Representation of Element Declaration
> Schema
> > Components] it should be noted in the table for the element Element
> > Information Item there exists the following
> >
> > Element Declaration Schema Component
> > Property Representation
> >
> > {target namespace} The ·actual value· of the targetNamespace
> > [attribute] of the parent <schema> element information item, or ·absent·
> if
> > there is none
> >
> >
> > so the from the documentBody's declaration it actually has no
> targetNameSpace.
> > Thus its qname should be "documentBody".
> >
> >
> > Thus the MSFT error message seems to be correct since there is no
> documentBody
> > element declared in the http://www.w3.org/2001/XMLSchema namespace while
> XSV
> > and Xerces look like they are incorrect.
> >
> > --
> > THINGS TO DO IF I BECOME AN EVIL OVERLORD #18
> > I will not have a son. Although his laughably under-planned attempt to
> usurp
> > power would easily fail, it would provide a fatal distraction at a crucial
> > point in time.
> >
> > ----- Original Message -----
> > From: "Takuki Kamiya" <takuki@p...>
> > To: <xml-dev@l...>
> > Sent: Friday, December 28, 2001 1:59 PM
> > Subject: qname resolution question
> >
> >
> > > Hi,
> > >
> > > I am wondering if the following schema is valid or not.
> > > (I tend to think it is invalid.)
> > >
> > > Both XSV and xerces passes validation with it.
> > >
> > > What is the namespace name for the "documentBody"
> > > qname below? Is it "http://www.w3.org/2001/XMLSchema",
> > > or is it none (as targetNamespace is not provided)?
> > >
> > > Thanks in advance.
> > >
> > >
> > > <?xml version ="1.0"?>
> > > <schema xmlns="http://www.w3.org/2001/XMLSchema" >
> > >
> > > <element name = "envelope">
> > > <complexType>
> > > <sequence>
> > > <element ref = "documentBody"/>
> > > </sequence>
> > > </complexType>
> > > </element>
> > >
> > > <element name = "documentBody" type="anyType"/>
> > >
> > > </schema>
> > >
> > > -Takuki Kamiya
> > >
> > >
> > >
> > > -----------------------------------------------------------------
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