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> Is it possible you meant <xs:sequence> rather than <xs:choice>? I don't
> believe the question mentioned choice.
No, I meant choice. Basically the original question was: can we allow
elements in any order, but allow multiples of one of those elements:
interleave(foo, bar+, baz)
Unfortunately you cannot do
xs:all(foo, bar+, baz)
Because bar+ is not permitted. To accomplish any order and multiples you
have to simplify the constraint and do:
(foo | bar | baz)*
Unfortunately this has the side-effect that multiple foo and multiple
bar elements are allowed. It is a catch-22... but RelaxNG's interleave
does exactly the right thing. So, to summarize, the original poster has
three options
(1) Give up on the "any order" approach and use an <xs:sequence>
(2) Allow multiples of all of the elements and use a repeated
<xs:choice> (i.e., set maxOccurs to unbounded). This was what I suggested
(3) Give up on XML Schema and DTDs, and use RelaxNG instead
xs:all will not allow multiples of a single child element in the
<xs:all> children components.
Sorry if I was unclear before... I can clarify further if need be.
All the best,
Jeff Rafter
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