Hi Mukul,

The intention is that there can be multiple assertions [1] specified. I
haven't checked the grammar in the spec itself. It may contain errors which
should be pointed out to the XML Schema WG.

Thanks.

[1] http://www.w3.org/TR/xmlschema11-2/#xr-assertions

Michael Glavassevich
XML Parser Development
IBM Toronto Lab
E-mail: [EMAIL PROTECTED]
E-mail: [EMAIL PROTECTED]

"Mukul Gandhi" <[EMAIL PROTECTED]> wrote on 07/29/2008 09:22:07 AM:

> Hi all,
>   In the XML Schema structures spec, at
http://www.w3.org/TR/xmlschema11-1/ .
>
> Please read the following section,
> 3.4.2.2 Mapping Rules for Complex Types with Simple Content
>
> and this definition [1]:
>
> <restriction
>   base = QName
>   id = ID
>   {any attributes with non-schema namespace . . .}>
>   Content: (annotation?, (simpleType?, (minExclusive | minInclusive |
> maxExclusive | maxInclusive | totalDigits | fractionDigits | maxScale
> | minScale | length | minLength | maxLength | enumeration | whiteSpace
> | pattern | assert | {any with namespace: ##other})*)?, ((attribute |
> attributeGroup)*, anyAttribute?), assert*)
> </restriction>
>
> Here, this part is I believe is a facet definition (can we call these
> facets here?), applying to this type:
>
> (minExclusive | minInclusive | maxExclusive | maxInclusive |
> totalDigits | fractionDigits | maxScale | minScale | length |
> minLength | maxLength | enumeration | whiteSpace | pattern | assert |
> {any with namespace: ##other})*
>
> This grammar gives me a feeling, that *only 1 facet* can be present in
> Schema (with 0-n instances of this single facet).
>
> But in reality, I think we can have multiple facet definitions on a
> single xs:restriction definition, like following [2]:
>
> <restriction base=".."
>   <facet1 value="" />
>   <facet2 value="" />
>   <assert test="" />
> </restriction>
>
> My questions are,
> 1) Is the Schema grammar [1] correct, and what is the interpretation
> regarding the number and ordering of facet definitions?
> 2) Is my statement [2] correct? If yes, then the code I submitted for
> assertions patch has a bug. I have assumed, that we can have only 1
> facet (with 0-n in numbers).
>
> Could you please clarify this, so I can resolve the likely bug in my
code.
>
>
> --
> Regards,
> Mukul Gandhi
>
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