Union types

[James A. Robinson]

> Of course if the lexical spaces of the member types of the union are
> disjoint (for example with union(date, time, dateTime)) a much easier
> solution is to do
> 
> string(pbs:myProp) = "1999-12-31T12:00:00"

That's one reason I was surprised to see the declaration that a union had
been made which held both xs:gYear and xs:decimal!  I assume the only
way to 'know' one or another is through the definition of some sort of
business logic that decrees just what happens when a number like 1875
is encountered.

Would I be wrong to assume the above solution won't work if one
of the values has an implicit timezone and the other does not?
In that case they would get different string values, I assume.


Jim

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