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If the result is length zero as described
above, the representation is then established by checking, in order for:
1. nil representation (if %ES; is a literal nil value).
2. empty representation.
3. normal representation (xs:string or xs:hexBinary only)
4. absent representation (if none of the prior representations apply).
But should bullet 1 be:
1. nil representation (if either
%ES; or
%WSP*; on its own is a literal nil value).
I added a test to IBM DFDL and found that setting dfdl:nilKind="literalValue"
& dfdl:nilValue="%WSP*;" did not match an element value of
empty string. That surprised me, and I think the IBM DFDL code is strictly
implementing bullet 1. Using "%WSP*;" is useful for allowing
zero or more white space to mean <nil>. I could use "%WSP+;
%ES" to achieve the same goal but I'm not sure that was the intent
here.
Quick response appreciated.
Regards
Steve Hanson
IBM
Integration Bus, Hursley, UK
Architect, IBM
DFDL
Co-Chair, OGF
DFDL Working Group
smh@uk.ibm.com
tel:+44-1962-815848
mob:+44-7717-378890
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