Re: [xml-dev] Conditional Enum

["G. Ken Holman" <gkholman@CraneSoftwrights.com>]

At 2008-01-15 07:50 -0800, Shashank Gupta wrote:
>I have a simple xml element which is an enum as :
><xs:simpleType name="a_type">
><xs:restriction base="xs:string">
><xs:enumeration value="XXX"/>
><xs:enumeration value="YYY"/>
></xs:restriction>
></xs:simpleType>
>I want to define another simple element of type string which can 
>take any value if the above a_type is XXX and another enum if the 
>above a_type is YYY.
>How do I do this.

By using co-occurrence constraints.  You can switch the constraint 
language from W3C Schema to ISO/IEC 19757-2 RELAX-NG in order to 
express the constraint at the model level, or you can employ ISO/IEC 
19757-3 Schematron in order to post-process your information to 
confirm the co-occurrence constraints are not violated.

I hope this helps.

. . . . . . . . . . . . Ken

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