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Hello,
I have an element that I would like to validate against an XML
schema in which the element can be either one of 50 values or an
arbitrary number of white space characters. The values would be
things like "AC", "AD", abd "AF" and you could see the XML element
represented like:

<myElt>AC</myElt>

or

<myElt>AF</myElt>

or

<myElt> </myElt>

How would I define such an element in an XML schema?

D. Alvarado wrote:
> Hello,
> I have an element that I would like to validate against an XML
> schema in which the element can be either one of 50 values or an
> arbitrary number of white space characters. The values would be
> things like "AC", "AD", abd "AF" and you could see the XML element
> represented like:
>
[...]
> How would I define such an element in an XML schema?

The boundaries are not too clear, but the following simple type might get
you on your way:

<xs:simpleType name="patternType">
<xs:restriction base="xs:string">
<xsattern value="[ ]{11}|A[C-F]" />
</xs:restriction>
</xs:simpleType>


JW

(D. Alvarado) writes:

> I have an element that I would like to validate against an XML
> schema in which the element can be either one of 50 values or an
> arbitrary number of white space characters. The values would be
> things like "AC", "AD", abd "AF" and you could see the XML element
> represented like:
>
> <myElt>AC</myElt>
> or
> <myElt>AF</myElt>
> or
> <myElt> </myElt>
>
> How would I define such an element in an XML schema?

Define a restriction of xs:token with either
* an enumeration of all your two-letter codes plus the empty string
or
* a pattern which allows the empty string plus your two letter codes

ht
--
Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
Half-time member of W3C Team
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