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   RE: [xml-dev] using schemaLocation to point multiple same namespace sche

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  • To: "Emmanuil Batsis (Manos)" <mbatsis@humanmarkup.org>,<xml-dev@lists.xml.org>
  • Subject: RE: [xml-dev] using schemaLocation to point multiple same namespace schemas
  • From: "Dare Obasanjo" <dareo@microsoft.com>
  • Date: Wed, 4 Sep 2002 16:38:42 -0700
  • Thread-index: AcJUaulN49mMooorTGyTsLvV+BGvmQAAR4nw
  • Thread-topic: [xml-dev] using schemaLocation to point multiple same namespace schemas

I read the same part of the W3C XML Schema recommendation that you did.
How exactly is our implementation incorrect given the parts of the REC
you quoted? 

In any contest between power and patience, bet on patience.      

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

-----Original Message-----
From: Emmanuil Batsis (Manos) [mailto:mbatsis@humanmarkup.org] 
Sent: Wednesday, September 04, 2002 4:23 PM
To: Dare Obasanjo; xml-dev@lists.xml.org

Dare Obasanjo wrote:

>I can't find any where in the W3C XML Schema recommendation where this 
>is disallowed
It's allowed but...

> but I can understand why a schema validator would want to disallow 
>that to reduce implementation complexity. Given that xsi:schemaLocation

>is considered to be a hint, implementations are given a lot of leeway 
>in how they treat its contents if at all.
>The Microsoft W3C XML Schema implementations pick the first schema they

>see and associate that with the namespace then ignores the other 
>specified locations.

The |xsi:schemaLocation also accepts pairs of URIs for authors that wish
to provide references to Schema documents|. In each pair of URIs, the
first is used as a namespace URI and the second as a location for the
schema document. This is one of the three requierments at [1].

The sister attribute, |xsi:noNamespaceSchemaLocation, accepts only one
URI as a hint to where the schema document may be located.|

So, this implementation is incorrect [2]?

XML Schema Part 1: Structures

4.3.2 How schema definitions are located on the Web [12]

4.1 Layer 1: Summary of the Schema-validity Assessment Core [2]


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