Re: ACTION-333 RDF/XML and XMLLiteral

Yes, sorry. RDF/XML defines parseType literal in terms of creating the
lexical value for the XMLLiteral datatype. Previously the LEXICAL value was
required to be c14n XML, this is no longer the case.

http://www.w3.org/TR/REC-rdf-syntax/#parseTypeLiteralPropertyElt

Proposed new algorithm in terms of most recent XPath:

For element e and the literal l that is the rdf:parseType="Literal"
content. l is not transformed by the syntax data model mapping into events
(as noted in 6 Syntax Data Model) but remains an XML Infoset of XML
Information items.

l is transformed into the lexical form of an XML literal in the RDF graph x
(a Unicode string) by the following algorithm. This does not mandate any
implementation method — any other method that gives the same result may be
used.

Use l to construct an XPath sequence (
http://www.w3.org/TR/xpath-datamodel-30/#sequences)
Apply http://www.w3.org/TR/xpath-functions-30/#func-serialize  to this
sequence to give a xs:string x
The Unicode string x is used as the lexical form of l
This Unicode string x SHOULD be in NFC Normal Form C[NFC]

Then o := typed-literal(literal-value := x, literal-datatype :=
http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral ) and the following
statement is added to the graph:

e.parent.subject.string-value e.URI-string-value o.string-value .


Advantages:
No longer requires encoding and decoding of bytes to Unicode strings
No longer requires c14n
Old algorithm is equivalent but more complex in all cases

XPath 3 is already at PR.



On Sun, Dec 15, 2013 at 5:06 PM, Guus Schreiber <guus.schreiber@vu.nl>wrote:

> Gavin,
>
> Would it be possible for you to prioritize this action?
>
>   ACTION-333 Make proposal to change rdf/xml to deal with rdf:xmlliteral
>
> Thanks,
> Guus
>