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Re: Schema imports in MinimalConformance

From: Wolfgang Hoschek <wolfgang.hoschek@mac.com>
Date: Sat, 15 Jul 2006 14:54:41 -0700
Message-Id: <BBBEF8CA-AA7C-4AAE-AE36-C6746C34CBE6@mac.com>
Cc: Xavier Franc <xfranc@online.fr>, public-xqts-comments@w3.org
To: David Carlisle <davidc@nag.co.uk>

On Jul 15, 2006, at 2:46 PM, David Carlisle wrote:

>
>
> [Note I'm not in the Working Group, just a fellow Test suite user]
>
>> There are still many "import schema" declarations in  
>> MinimalConformance
>> tests (around 250, nearly 2%).
>>
>
> In addition to that there are many more which don't explictly import a
> schema but have hidden dependency on schema support as the expected
> result files assume that the input tree has type annotations from  
> schema
> validation.
>
> I've argued often that all these schema dependencies should be  
> removed.
>
>> These tests will always fail with an implementation that does not
>> support Schema:
>
> This isn't strictly true as the test suite guidelines allow you to
> change the schema import to a namespace declaration before running the
> test. So it is possible to pass some of those tests.
> http://www.w3.org/XML/Query/test-suite/Guidelines%20for%20Running% 
> 20the%20XML%20Query%20Test%20Suite.html
>
>>    This declaration can be customized in one of the following  
>> three ways:
>>
>>    1. Unchanged: use schema import as indicated in the original query
>>    2. Remove the schema import declaration from the query, and add
>>    namespace declaration using same name and URI to statically known
>>    namespaces before the query is executed.
>>    3. Replace schema import with namespace declaration using same  
>> name
>>    and URI.
>
>
>
> This licence to change the query text is not particularly helpful  
> though,
> and I strongly urge that it be _removed_ from the guidelines.
>
> See bug
> http://www.w3.org/Bugs/Public/show_bug.cgi?id=2666
> for the most recent of several bug reports in this area.
>
> If changing the schema import to a namespace declaration allows the  
> test
> to run correctly then the schema dependency is spurious, so the test
> should be changed as distributed just to use a namespace declaration.
>
> If changing the schema import to a namespace declaration causes the
> test to fail (as it requires type or element declarations) then
> suggesting that implementors make this change before running the  
> test is
> just misleading and unhelpful. The test needs to be moved to the
> optional schema import section of the test suite.
>
>
> David

Well said, thanks!
Wolfgang.
Received on Saturday, 15 July 2006 21:55:13 GMT

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