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John Cowan wrote:
> This led me to consider what rationalized constraining facets would
> look like. On the syntactic side, pattern does it all; the RNG rule that
> multiple patterns are ANDed is IMHO superior to the WXS rule that they
> are ORed.
Actually, WXS ANDs in some circumstances and ORs in others: it ANDs the
the pattern from the base type with the pattern from the restricting
type, whereas it ORs two pattern facets on the same type. Thus, trang
translates:
demo = xsd:string { pattern = "[a-z ]*" pattern=".* .*" }
to
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified">
<xs:simpleType name="demo">
<xs:restriction>
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:pattern value="[a-z ]*"/>
</xs:restriction>
</xs:simpleType>
<xs:pattern value=".* .*"/>
</xs:restriction>
</xs:simpleType>
</xs:schema>
James
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