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- From: Aleksi Niemelä <aleksi.niemela@cinnober.com>
- To: 'XML List' <xml-dev@ic.ac.uk>, 'xml-schema-comments' <www-xml-schema-comments@w3c.org>
- Date: Tue, 11 Jan 2000 16:57:01 +0100
> <warning>
> <topic>
> I'm can see need for more powerful <any>
> (http://www.w3.org/TR/xmlschema-1/#declare-openness).
> My problem is probably repeated few times on xml-dev or
> http://lists.w3.org/Archives/Public/www-xml-schema-comments/, and
> since I don't know where to discuss about schemas, I'd like to hear
> about better place for this discussion.
> </topic>
>
> <discussion level='beginner'>
> Don't kill me. I started with schemas on
> Saturday and I bumped into problem with my first exercise schema (so I
> concluded
> there have to be real need for this, not just something from my
> imagination).
> </discussion>
> </warning>
>
> How to express some constraints on <any> element? As I see it,
> specification doesn't provide any ways for this. (Correct me,
> please!:)
>
> What is the right way to express such simple thing as "any element
> with child X".
>
> I'd like to reform rule 1 at 3.5 Wildcards (and rest accordingly):
> o Any well-formed XML element item with specified type constraint:
> any tag, any namespace, any attributes, any content, as long
> as it's well-formed and satisfy specified schema's type constraint.
>
> I can come up with different ways to express same thing:
> <any type='Type'/>
> <element type='Type'/>
> <element name='' type='Type'/>
>
> But since regular expressions are now introduced, I'd love to use
> them:
>
> <element name='*' type='Type'/>
> <element name='*' ref="VaryingName1"/>
>
> Allowing references in the consturct is very important!
>
> Maybe star wildcard is just enough, but I can make some real use for
> real patterns too:
>
> <element name='expect_varying_named_binary_operators'>
> <element name='(and|or|own.+BinaryOperator)'
> type='BinaryOperator'/>
> </element>
>
> <type name='BinaryOperator'>
> <element name='*' type='Operand'/>
> <element name='*' type='Operand'/>
> </type>
>
> ========
> document_written_by_some_completely_different_user.xml:
> ========
> <expect_varying_named_binary_operators>
> <own_ultimately_weird_BinaryOperator>
> <op1/>
> <op2/>
> </own_ultimately_weird_BinaryOperator>
> </expect_varying_named_binary_operators>
>
> ----------------
> In the end I thought a little bit about usability and thought it
> might be better idea to set varying names to different attribute than
> name on <element>-element.
>
> <element match='*'> like in xsl might be best solution.
>
> Any ideas, comments?
>
> - department of uncensored ideas
>
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