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Re: pfps-08 last call comment on typed literals

From: pat hayes <phayes@ai.uwf.edu>
Date: Fri, 2 May 2003 18:32:19 -0500
Message-Id: <p05210636bad8adf8b657@[]>
To: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>
Cc: www-rdf-comments@w3.org

>The problem that I see is that there is still this datatype
>(rdf:XMLLiteral) that doesn't act like a datatype.

See below.

>If there was some different syntax for this purpose, then the situation
>would be much better.  For example, if literals in triples looked like
>	"chat"
>	"chat"@fr
>	\\<xx></xx>\\
>	\\<xx></xx>\\@fr
>	"15"^^xsd:integer
>then it would be obvious that string literals and XML literals are
>different from typed literals.  This would not require any change in
>RDF/XML by the way.

I take your point, and this is indeed one option we have considered.

>I would find it still better if language tags were eliminated entirely.
>This would allow completely uniform treatment of literals, with, perhaps,
>untyped literals going back to being underspecified.

That is another option we are actively considering.

>Note that even this would not eliminate all the concerns I have with

Suppose (just suppose, mark you) that lang tags were eliminated 
altogether from the graph syntax, even from XML literals, and 
rdf:XMLLiteral were a built-in datatype with a lexical-to-value map 
which simply applies an XML canonicalization to the literal string.

Might that overcome your concerns, if it were done in a suitable way?


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Received on Friday, 2 May 2003 19:32:27 UTC

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