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[Bug 13860] New: [XQuery 3.0] tuples in the binding sequence

From: <bugzilla@jessica.w3.org>
Date: Mon, 22 Aug 2011 09:03:40 +0000
To: public-qt-comments@w3.org
Message-ID: <bug-13860-523@http.www.w3.org/Bugs/Public/>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=13860

           Summary: [XQuery 3.0] tuples in the binding sequence
           Product: XPath / XQuery / XSLT
           Version: Working drafts
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: minor
          Priority: P2
         Component: XQuery 3.0
        AssignedTo: jonathan.robie@gmail.com
        ReportedBy: mike@saxonica.com
         QAContact: public-qt-comments@w3.org


Section 3.9.4 has a paragraph that starts: "In the above example, the
WindowStartCondition and WindowEndCondition are both true(), which causes each
tuple in the binding sequence to be in a separate window."

For "tuple" read "item". The binding sequence is a sequence of items, not a
sequence of tuples.

(Also, I think "true", perhaps in code font, is more appropriate than
"true()".)

(In passing, I note that this section talks of the items in a sequence as if
they are necessarily distinct. When we change the above to say "causes each
item in the binding sequence to be in a separate window" we are expecting the
reader to understand that when the sequence is ($node, $node, $node, $node,
$node) then by "each item" we are thinking of the sequence as containing five
items, rather than one. Most of the time the meaning is clear. Occasionally,
though, the usage jars: for example the sentence "Thus, no item that occurs in
one window can occur in another window drawn from the same binding sequence."
could easily be misread as saying that if a node $N occurs in one window, then
the same node cannot also occur in another window; but if $N appears twice in
the binding sequence, then this reading is incorrect.)

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Received on Monday, 22 August 2011 09:03:42 UTC

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