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Re: XML Schema newbie - are multiple unordered childrenoccurre

• To: xml-dev@l...
• Subject: Re: XML Schema newbie - are multiple unordered childrenoccurrences possible?
• From: Max Chappell <max@m...>
• Date: Tue, 02 Dec 2003 20:15:52 +0000
• In-reply-to: <084c01c3b90d$8ba11910$560bbed8@PREZ>
• Organization: Maxxml Limited
• References: <20031202180028.GA24522@t...> <200312021807.hB2I7b528570@v...> <20031202190015.GA24640@t...> <084c01c3b90d$8ba11910$560bbed8@PREZ>
• Reply-to: max@m...
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I agree. The biggest shortcoming I have trouble with is the lack of any 
if then construct. i.e.

Taking the example you gave -
You can't say if <ParentNode> has @flavour='B' Then only allow child 
elements of type <B>.

Tall order I know, but something I come up against on a daily basis.

Max

Bryce K. Nielsen wrote:

>The interesting thing with W3C's schema language is that since they've taken
>a more OOP approach, there are many different ways you can write schemas to
>validate a specific document, it's all up to your style. What I read from
>the original poster was a schema that would validate the following XML:
>
><ParentNode>
>  <A/>
>  <B/>
>  <A/>
>  <A/>
>  <B/>
>  <A/>
>  <A/>
>  <B/>
>  <B/>
>  <!-- and many more -->
></ParentNode>
>
>The schema I whipped up would validate that instance. My schema is
>definately not all inclusive though, as you described. I tend to avoid
>xsd:choice nodes, as is my style, which was why my first instinct was to
>have a sequence with optional children. I could have easily done a schema
>with two optional sequences that had one of each node. Or choice too. It's
>all up to the schema author to decide which practices he/she wishes to
>follow.
>
>Bryce K. Nielsen
>SysOnyx, Inc. (www.sysonyx.com)
>Makers of xmlArchitect, the Smart XML Schema Editor
>(http://www.sysonyx.com/products/xmlarchitect)
>
>
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• References:
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    • From: "Bryce K. Nielsen" <bryce@s...>

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