Re: URIs in constraints, isBound, casting in eq

On Mon, 2004-11-22 at 16:48 +0000, Seaborne, Andy wrote:
[...]
> Yes - it is.  Maybe it shouldn't be, but the following is possible:
> 
>     dc:title =~ /^http:/    # Test whether http URI
> 
> so extension functions may take URIs as arguments.

Whoah... I'm rushing to get out the door for Thanksgiving travel,
so apologies for lack of suggested replacement and such...
but that sets off a huge use/mention RED FLAG, for me.

dc:title is a an RDF property, not a string.

We can introduce something ala log:uri if we want
to do that sort of use/mention level-breaking:

	WHERE dc:title log:uri ?TITLEURI
	AND ?TITLEURI =~ /^http:/


-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
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