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Clarify datetime rule in 3.1 Additional RDFa Processing Rules

From: Niklas Lindström <lindstream@gmail.com>
Date: Sun, 10 Mar 2013 22:17:18 +0100
Message-ID: <CADjV5jdebhK681-f6oFUjr44XZzpcErkFTNK420d4Wo-m5vYWw@mail.gmail.com>
To: public-rdfa-wg <public-rdfa-wg@w3.org>
Hi all,

I think we should formulate the @datetime rule in "3.1 Additional RDFa
Processing Rules" a little better. It currently reads:

[[[
* In Section 7.5: Sequence, processing step 11, the HTML5 @datetime
attribute must be utilized when generating output. If @datetime is
detected and the value of the attribute is a valid xsd:date, xsd:time,
xsd:dateTime, xsd:duration, xsd:gYear, or xsd:gYearMonth, then a
triple must be generated where the current property value is the
matching xsd datatype and the value is the value contained in the
@datetime attribute. If @datatype is specified, it must take
precedence. If no @datatype is specified, and the value does not match
any of the automatically detected xsd datatypes, a plain literal must
be generated with the associated language of the node, if available.
If @content is specified on the same element, it must take precedence
over @datetime and the contents of the element and must be processed
according to the rules defined in [RDFA-CORE].
]]]

I find the text somewhat tricky to follow. Also, the part: "then a
triple must be generated where the current property value is the
matching xsd datatype and the value is the value contained in the
@datetime attribute" seems a bit strange. For one, the "current
property value" is *of* the matching xsd datatype.

I suggest to change the text block to:

[[[
* In Section 7.5: Sequence, processing step 11, the HTML5 @datetime
attribute must be utilized when generating the current property value,
unless @content is also present on the same element. Otherwise, if
@datetime is present, the current property value must be generated as
follows. The literal value is the value contained in the @datetime
attribute. If @datatype is present, it is to be used as per usual.
Otherwise, if the value of @datetime lexically matches a valid
xsd:date, xsd:time, xsd:dateTime, xsd:duration, xsd:gYear, or
xsd:gYearMonth, a typed literal must be generated, with its datatype
being the matching xsd datatype. Otherwise, a plain literal must be
generated, taking into account any current language available.
]]]

Thoughts?

Cheers,
Niklas
Received on Sunday, 10 March 2013 21:18:15 UTC

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