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RDFa TF minutes, 2009-10-08

From: Ivan Herman <ivan@w3.org>
Date: Fri, 09 Oct 2009 08:52:25 +0200
Message-ID: <4ACEDDA9.7040304@w3.org>
To: W3C RDFa task force <public-rdf-in-xhtml-tf@w3.org>
CC: W3C SW Deployment WG <public-swd-wg@w3.org>
Minutes are at:

http://www.w3.org/2009/10/08-rdfa-minutes.html

Text version below

Ivan

    [1]W3C

       [1] http://www.w3.org/

                         RDF in XHTML Task Force

08 Oct 2009

    [2]Agenda

       [2] 
http://lists.w3.org/Archives/Public/public-rdf-in-xhtml-tf/2009Oct/0004.html

    See also: [3]IRC log

       [3] http://www.w3.org/2009/10/08-rdfa-irc

    Previous: [4]http://www.w3.org/2009/09/24-rdfa-minutes.html

       [4] http://www.w3.org/2009/09/24-rdfa-minutes.html

Attendees

    Present
           Manu Sporny, Shane McCarron, Steven Pemberton

    Regrets
           Ben Adida, Ivan Herman, Mark Birbeck

    Chair
           Manu Sporny

    Scribe
           Shane McCarron

Contents

      * [5]Topics
          1. [6]Action Items
          2. [7]XML Namespace Preservation in XML Literals
          3. [8]Unreviewed XHTML test cases
      * [9]Summary of Action Items
      _________________________________________________________


Action Items

    <scribe> ACTION: Ben to update JS xmlns getter code on implementors'
    guide for xhtml mime type support [recorded in
    [10]http://www.w3.org/2009/09/17-rdfa-minutes.html#action02]
    [CONTINUES]

      [10] http://www.w3.org/2009/09/17-rdfa-minutes.html#action02

XML Namespace Preservation in XML Literals

    Manu: The core of this issue is that the test cases shove every
    namespace that is active into the top elements in the literal.

    Shane:Ivan seemed to say we should canonicalize...

    ...Ben seemed to disagree.

    Shane: This has to do with whether an XMLLiteral is supposed to be
    canonicalized.
    ... You don't have to canonicalize XMLLiterals in RDF.

    Manu:The underlying issue is that processors might generate
    different xmlliteral. It is possible to tighten up our spec to
    prevent this. This will affect real world use.

    Manu: So multiple processors might raise xmlliterals that are not
    byte by byte identical and might not compare correctly via sparql

    Shane: If we bring HTML into the mix... what happens when there is
    no defauilt xml namespace

    Manu:We could require XHTML namespace to be emitted when generating
    xml literals from HTML input.

    Manu:Should we make it a requirement that a processor assume the
    default namespace is the xhtml namspace when processing RDFa from an
    HTML source? Probably. It would not have any negative effects.

    Shane: Why does it matter if there are extra xml namespace
    declarations embedded in an XML Literal ?

    Manu: It matters because the rest of the stack assumes the input is
    canonical XML... even though that is not really a requirement.
    XMLLiteral is a corner case.... so the rules here won't mess up that
    much in the wild. We should require that conforming processors
    always canonicalize an XMLLiteral.

    Shane:This would be a conformance change.

    Manu:Can we issue an errata that says we are going this way in the
    future and implementors should do it now.

    Shane:Yes, we can.

    Shane:What should we do with the test suite? Change the tests so
    they require canonical input?

    Manu:Yes.

    Shane:Add a comment to the tests so they indicate that a failure is
    okay now, but won't be soon.

    <scribe> ACTION: ShaneM to craft errata text about canonical
    XMLLiterals [recorded in
    [11]http://www.w3.org/2009/10/08-rdfa-minutes.html#action02]

Unreviewed XHTML test cases

    <msporny> [12]http://rdfa.digitalbazaar.com/test-suite/

      [12] http://rdfa.digitalbazaar.com/test-suite/

    <msporny> TCs: 131, 134, 140, 142, 147, 154

    Manu: Test Case 131: tests to ensure that characters defined as
    whitespace by XML are treated as whitespace by a processor

    <msporny> +1 for passing 131

    +1

    <Steven> +1

    Test 131 approved.

    Manu:Test case 134:

    Manu:In XHTML mode, this should generate no triple.

    Shane:xmlns spec says
    [13]http://www.w3.org/TR/REC-xml-names/#ns-decl

      [13] http://www.w3.org/TR/REC-xml-names/#ns-decl

    Shane:'xmlns' must be in lower case

    <Steven> [14]http://www.w3.org/TR/rdfa-syntax/#s_metaAttributes

      [14] http://www.w3.org/TR/rdfa-syntax/#s_metaAttributes

    Shane:XHTML Metainformation Attributes Module redefines rel and rev

    Steven:Should we treat reserved words as case-insensitive?

    Steven: HTML4 says the author is allowed to treat rel and rev values
    as case insensitive... so yes. we should.
    ... Need to issue an errata about section 9.3 that says they are
    treated case insensitively on input and must be transformed to lower
    case on ouput in triples

    <scribe> ACTION: ShaneM to craft errata about case insensitive
    reserved words. [recorded in
    [15]http://www.w3.org/2009/10/08-rdfa-minutes.html#action03]

    Test case 134 is NOT YET APPROVED

Summary of Action Items

    [NEW] ACTION: ShaneM to craft errata about case insensitive reserved
    words. [recorded in
    [16]http://www.w3.org/2009/10/08-rdfa-minutes.html#action03]
    [NEW] ACTION: ShaneM to craft errata text about canonical
    XMLLiterals [recorded in
    [17]http://www.w3.org/2009/10/08-rdfa-minutes.html#action02]

    [PENDING] ACTION: Ben to update JS xmlns getter code on
    implementors' guide for xhtml mime type support [recorded in
    [18]http://www.w3.org/2009/09/17-rdfa-minutes.html#action02]

      [18] http://www.w3.org/2009/09/17-rdfa-minutes.html#action02

    [End of minutes]
      _________________________________________________________


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-- 

Ivan Herman, W3C Semantic Web Activity Lead
Home: http://www.w3.org/People/Ivan/
mobile: +31-641044153
PGP Key: http://www.ivan-herman.net/pgpkey.html
FOAF: http://www.ivan-herman.net/foaf.rdf


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