W3C home > Mailing lists > Public > xmlschema-dev@w3.org > August 2004

'Re: "Re: Multiple imports of the same namespace"'

From: Kasimier Buchcik <kbuchcik@4commerce.de>
Date: Tue, 24 Aug 2004 11:06:13 +0200
To: <xmlschema-dev@w3.org>
Message-ID: <412B0505.9050908@4commerce.de>


on 8/23/2004 4:52 PM Anli Shundi wrote:

> On 8/23/2004 10:16 AM, JGLACE@lmi.org wrote:
>>I am receiving an error when I validate a Schema that has multiple
>>imports of the same namespace when I use XerceJ 2.6.2. I've recreated my
>>problem using some simplified Schemas below.
>>I'm hoping this group can verify that my Schema are correct. The main
>>question being is importing multiple files of the same namespace legal
>>and am I using the correct syntax. 
> Yes, they are legal but the spec gives leeway to schema processors in 
> locating schemas. As Michael Kay laid it out in the previous post, Turbo 
> 2.4.1, Xerces 2.6.2 (and XSV 2.7-1) opt for the easy way and skip the 
> second import.

This seems a reasonable mechanism to give the schema processor some 
optional locations: e.g. if importing from the web, some of the 
resources might not be available at all time; so it would look for the 
next options until a resource is found.

> And, No: none of the tools is based on any of the others.  Other Tibco 
> tools do handle multiple imports of the same namespace from different 
> locations as more and more applications are making use of such constructs.
> -Anli

Seems reasonable as well, since the components bound to a specific 
target namespace (or none) could be defined in seperate documents - 
allowing the importing schema to import just the needed subset of 

I would like to have both But with clearly differentiated mechanisms.



Received on Tuesday, 24 August 2004 08:55:59 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 23:15:23 UTC