[Bug 28915] New: XQuery inconsistent about constructor functions for list types

https://www.w3.org/Bugs/Public/show_bug.cgi?id=28915

            Bug ID: 28915
           Summary: XQuery inconsistent about constructor functions for
                    list types
           Product: XPath / XQuery / XSLT
           Version: Working drafts
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P2
         Component: XQuery 3.1
          Assignee: jonathan.robie@gmail.com
          Reporter: pwalmsley@datypic.com
        QA Contact: public-qt-comments@w3.org

F&O says "For every user-defined simple type in the static context (See Section
2.1.1 Static Context XP31), there is a constructor function" and goes on to
explain that this includes list and union types. 

But the XQuery spec, in multiple places, seems to deliberately exclude list
types when talking about constructor functions.  For example:

Section 3.1.1 "Values of other atomic types can be constructed by calling the
constructor function for the given type"  (Note "atomic" instead of "simple")

Section 3.1.1 "Constructor functions are available for all Generalized atomic
types,"  (where the definition of generalized atomic types specifically
excludes list types)

Section 3.17.5 "For every generalized atomic type in the in-scope schema types
(except xs:NOTATION and xs:anyAtomicType, which are not instantiable), a
constructor function is implicitly defined."  (Again refers to generalized
atomic types)

In the glossary, "The constructor function for a given type is used to convert
instances of other atomic types into the given type." (Use of "atomic")


However, elsewhere, e.g. Section 4.11, it says there is a constructor function
for every named user-defined simple type, so that's consistent with F&O.

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Received on Monday, 6 July 2015 17:40:16 UTC