I agree that such a clarification would be useful, but I believe it is
already explicitly disallowed.
Section 4.2 of the XQuery spec states:
"A module declaration begins with the keyword module and contains a
namespace prefix and a URILiteral. The URILiteral identifies the target
namespace of the library module..."
The Namespaces in XML 1.0 errata states:
NE09: The empty string, though it is a legal URI reference, cannot be
used as a namespace name.
Technically, the XQuery spec should use the term "namespace name"
instead of "namespace URI", but the meaning is clear.
-- Ron
Michael Kay wrote:
I don't think this *should* be allowed; but I don't think the spec says
clearly that it isn't.
The zero-length string is not a valid namespace URI, though it is used in
some contexts (e.g. xmlns="") to indicate the "not-a-namespace" (for want of
a better term). I think the spec needs to say explicitly that this isn't
allowed. Could you please raise it on http://www.w3.org/Bugs/Public/ ?
Michael Kay
-----Original Message-----
From: talk-bounces-KUd/JJajPrLQT0dZR+AlfA@xxxxxxxxxxxxxxxx
[mailto:talk-bounces-KUd/JJajPrLQT0dZR+AlfA@xxxxxxxxxxxxxxxx] On Behalf Of Pierrick Brihaye
Sent: 28 September 2005 08:06
To: talk-KUd/JJajPrLQT0dZR+AlfA@xxxxxxxxxxxxxxxx
Subject: [xquery-talk] zero-length string namespaces URI
Hi,
Is this syntax correct ?
module.txt :
module namespace foo="";
declare variable $foo:bar := "bar";
XQuery :
import module namespace foo="" at "module.txt";
$foo:bar
or XQuery :
import module namespace foo="" at "module.txt";
$bar
Saxon returns "bar" in both cases.
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