W3C home > Mailing lists > Public > xmlschema-dev@w3.org > June 2003

Re: XML result set schema validation

From: Henry S. Thompson <ht@cogsci.ed.ac.uk>
Date: 19 Jun 2003 08:49:02 +0100
To: Tony Opatha <tonyopatha@yahoo.com>
Cc: xmlschema-dev@w3.org
Message-ID: <f5bd6ha4idt.fsf@erasmus.inf.ed.ac.uk>

Tony Opatha <tonyopatha@yahoo.com> writes:

> If a document instance has some XML fragments included or excluded
> depending on the level of detail than how can the XSD schema be used to
> validate that instance? Using xsd:nil seems to indicate that the element
> is not present rather than the fact that multiple types of elements may
> be present or not present. 

xsi:nil indicates that an element is _empty_ when it normally has
content -- that sounds to me like it covers "some XML fragments
included or excluded".

<snip/>

> Get me my bank account transaction information such that I see all 
> checks cleared in past one month.

<transactions>
 <checks>
  . . .
 </checks>
 <ATM xsi:nil="true"/>
 <deposits xsi:nil="true"/>
</transactions>

> Get me my account transaction information such that I see all ATM
> transactions as well as check cleared in past one month.

<transactions>
 <checks>
  . . .
 </checks>
 <ATM>
  . . .
 </ATM>
 <deposits xsi:nil="true"/>
</transactions>
  
> Get me my account information such that I see all transactions for
> last one year.

<transactions>
 <checks>
  . . .
 </checks>
 <ATM>
  . . .
 </ATM>
 <deposits>
  . . .
 </deposits>
</transactions>

ht
-- 
  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                      Half-time member of W3C Team
     2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
	    Fax: (44) 131 650-4587, e-mail: ht@cogsci.ed.ac.uk
		     URL: http://www.ltg.ed.ac.uk/~ht/
 [mail really from me _always_ has this .sig -- mail without it is forged spam]
Received on Thursday, 19 June 2003 03:49:04 UTC

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