[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] XQuery/XPath 2.0 Data Model - values of union types
A union type may ambiguously match more than one string. In section 5, "The values of nodes whose type is derived by union from an XML Schema primitive type are represented by a sequence of atomic values each of whose type is one of the individual types from the union. The union type information is lost and only the specific types of each individual item is retained. 1. (Nit) Shouldn't this be "...derived by union from XML Schema primitive types..."? 2. Given the following: <element name="ambig"> <simpleType> <union memberTypes="xs:integer xs:string"/> </simpleType> </element> And an instance: <ambig>5</ambig> Then is the value of this node the sequence (5, "5")? If so, what is the reason for preserving both values? Are they used elsewhere? This treatment seems inconsistent with that given non-primitive types, like list. If not, and the value is (5) please ignore the remaining questions and explain what the paragraph in question really means? 3. If so, is this the value returned by the dm:typed-value accessor for the node described in 4.3.2? 4. Whether the answer is (5) or (5, "5") I would guess the dm:type accessor would return xs:integer and this would be the value of type in the data model, as this is the value consistent with validation? Bob
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