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Re: RDF in the RDFa Core 1.1 Specification

From: Shane McCarron <shane@aptest.com>
Date: Thu, 07 Jun 2012 22:22:46 -0500
Message-ID: <4FD17006.1000802@aptest.com>
To: spec-prod@w3.org
Thanks!  And good work Gregg!  You guided my hand.

On 6/7/2012 9:44 PM, Gregg Kellogg wrote:
> As RDFa Core 1.1 is now a recommendation [1], it is legitimate to use it the the publication of the rec itself. If you parse the spec document through an RDFa 1.1 processor, this is what you get:
>
> @base<http://www.w3.org/TR/rdfa-core/>  .
> @prefix bibo:<http://purl.org/ontology/bibo/>  .
> @prefix dcterms:<http://purl.org/dc/terms/>  .
> @prefix foaf:<http://xmlns.com/foaf/0.1/>  .
> @prefix rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#>  .
> @prefix xhv:<http://www.w3.org/1999/xhtml/vocab#>  .
> @prefix xsd:<http://www.w3.org/2001/XMLSchema#>  .
>
> <>  a bibo:Document;
>     dcterms:title "RDFa Core 1.1";
>     dcterms:abstract """Abstract
>        The current Web is primarily made up of an enormous number of documents
>          that have been created using HTML. These documents contain significant
>          amounts of structured data, which is largely unavailable to tools and
>          applications. When publishers can express this data more completely, and
>          when tools can read it, a new world of user functionality becomes
>          available, letting users transfer structured data between applications
>          and web sites, and allowing browsing applications to improve the user
>          experience: an event on a web page can be directly imported into a
>          user's desktop calendar; a license on a document can be detected so that
>          users can be informed of their rights automatically; a photo's creator,
>          camera setting information, resolution, location and topic can be
>          published as easily as the original photo itself, enabling structured
>          search and sharing.
>        RDFa Core is a specification for attributes to express structured data
>          in any markup language. The embedded data already available in the
>          markup language (e.g., HTML) can often be reused by the RDFa markup, so
>          that publishers don't need to repeat significant data in the document
>          content. The underlying abstract representation is RDF [RDF-PRIMER],
>          which lets publishers build their own vocabulary, extend others, and
>          evolve their vocabulary with maximal interoperability over time. The
>          expressed structure is closely tied to the data, so that rendered data
>          can be copied and pasted along with its relevant structure.
>        The rules for interpreting the data are generic, so that there is no
>          need for different rules for different formats; this allows authors and
>          publishers of data to define their own formats without having to update
>          software, register formats via a central authority, or worry that two
>          formats may interfere with each other.
>        RDFa shares some of the same goals with microformats [MICROFORMATS].
>          Whereas microformats specify both a syntax for embedding structured data
>          into HTML documents and a vocabulary of specific terms for each
>          microformat, RDFa specifies only a syntax and relies on independent
>          specification of terms (often called vocabularies or taxonomies) by
>          others. RDFa allows terms from multiple independently-developed
>          vocabularies to be freely intermixed and is designed such that the
>          language can be parsed without knowledge of the specific vocabulary
>          being used.
>        This document is a detailed syntax specification for RDFa, aimed at:
>
>          those looking to create an RDFa Processor, and who therefore need a
>            detailed description of the parsing rules;
>          those looking to integrate RDFa into a new markup language;
>          those looking to recommend the use of RDFa within their
>            organization, and who would like to create some guidelines for their
>            users;
>          anyone familiar with RDF, and who wants to understand more about
>            what is happening 'under the hood', when an RDFa Processor runs.
>
>         For those looking for an introduction to the use of RDFa and some
>          real-world examples, please consult the [RDFA-PRIMER].
>
>          How to Read this Document
>          First, if you are not familiar with either RDFa or RDF, and
>            simply want to add RDFa to your documents, then you may find the RDFa
>            Primer [RDFA-PRIMER] to be a better introduction.
>          If you are already familiar with RDFa, and you want to examine the
>            processing rules  perhaps to create an RDFa Processor  then you'll
>            find the Processing Model section of most
>            interest. It contains an overview of each of the processing steps,
>            followed by more detailed sections, one for each rule.
>          If you are not familiar with RDFa, but you are familiar
>            with RDF, then you might find reading the Syntax
>
>              Overview useful, before looking at the Processing
>
>              Model since it gives a range of examples of markup that use
>            RDFa. Seeing some examples first should make reading the processing
>            rules easier.
>          If you are not familiar with RDF, then you might want to take a look
>            at the section on RDF Terminology
>            before trying to do too much with RDFa. Although RDFa is designed to
>            be easy to author  and authors don't need to understand RDF to use it
>             anyone writing applications that consume RDFa will need to
>            understand RDF. There is a lot of material about RDF on the web, and a
>            growing range of tools that support RDFa. This document only contains
>            enough background on RDF to make the goals of RDFa more clear.
>          RDFa is a way of expressing RDF-style
>            relationships using simple attributes in existing markup languages
>            such as HTML. RDF is fully internationalized, and permits the use of
>            Internationalized Resource Identifiers, or IRIs. You will see the term
>            'IRI' used throughout this specification. Even if you are not familiar
>            with the term IRI, you probably have seen the term 'URI' or 'URL'.
>            IRIs are an extension of URIs that permits the use of characters
>            outside those of plain ASCII. RDF allows the use of these characters,
>            and so does RDFa. This specification has been careful to use the
>            correct term, IRI, to make it clear that this is the case.
>            Even though this specification exclusively
>            references IRIs, it is possible that a Host Language will
>            restrict the syntax for its attributes to a subset of IRIs
>            (e.g., @href in HTML5).  Regardless of
>            validation constraints in Host Languages, an RDFa Processor
>            is capable of processing IRIs.
>
>      """;
>     dcterms:issued "2012-06-07T05:00:00+0000"^^xsd:dateTime;
>     dcterms:language "en";
>     dcterms:publisher [ a foaf:Organization;
>       foaf:homepage<http://www.w3.org/>;
>       foaf:name "World Wide Web Consortium"];
>     dcterms:references<http://www.w3.org/TR/1999/REC-html401-19991224>,
>       <http://microformats.org>,
>       <http://www.w3.org/2001/tag/doc/qnameids-2004-03-17>,
>       <http://www.w3.org/TR/2004/REC-rdf-concepts-20040210>,
>       <http://www.w3.org/TR/2004/REC-rdf-primer-20040210/>,
>       <http://www.w3.org/TR/1999/REC-rdf-syntax-19990222>,
>       <http://www.w3.org/TR/2004/REC-rdf-testcases-20040210>,
>       <http://www.w3.org/TR/2012/NOTE-rdfa-primer-20120607>,
>       <http://www.w3.org/TR/2008/REC-rdfa-syntax-20081014>,
>       <http://standards.iso.org/ittf/PubliclyAvailableStandards/c052348_ISO_IEC_19757-2_2008(E).zip>,
>       <http://www.megginson.com/downloads/SAX/>,
>       <http://www.w3.org/TeamSubmission/turtle/>,
>       <http://www.w3.org/TR/2011/WD-widgets-uri-20110927>,
>       <http://www.w3.org/TR/2001/REC-xhtml11-20010531>,
>       <http://www.w3.org/TR/2002/REC-xml-exc-c14n-20020718/>,
>       <http://www.w3.org/TR/2008/REC-xml-20081126/>,
>       <http://www.w3.org/TR/2012/REC-xmlschema11-1-20120405/>;
>     dcterms:replaces<http://www.w3.org/TR/2012/PR-rdfa-core-20120508/>;
>     dcterms:requires<http://www.w3.org/TR/2009/REC-owl2-overview-20091027/>,
>       <http://www.w3.org/TR/2009/REC-owl2-profiles-20091027/>,
>       <http://www.w3.org/TR/2009/REC-owl2-rdf-based-semantics-20091027/>,
>       <http://www.w3.org/TR/2004/REC-rdf-mt-20040210>,
>       <http://www.w3.org/TR/2004/REC-rdf-syntax-grammar-20040210>,
>       <http://www.ietf.org/rfc/rfc2119.txt>,
>       <http://www.ietf.org/rfc/rfc3987.txt>,
>       <http://www.w3.org/TR/2012/REC-xhtml-rdfa-20120607/>,
>       <http://www.w3.org/TR/2009/REC-xml-names-20091208/>,
>       <http://www.w3.org/TR/2006/REC-xml-20060816/>,
>       <http://www.w3.org/TR/2012/REC-xmlschema11-2-20120405/>;
>     bibo:chapter<#abstract>,
>       <#sotd>,
>       <#toc>,
>       <#s_motivation>,
>       <#s_Syntax_overview>,
>       <#s_rdfterminology>,
>       <#conformance>,
>       <#s_syntax>,
>       <#s_curies>,
>       <#s_model>,
>       <#s_rdfaindetail>,
>       <#s_initialcontexts>,
>       <#s_vocab_expansion>,
>       <#s_datatypes>,
>       <#vocabulary>,
>       <#a_history>,
>       <#a_acks>,
>       <#references>;
>     bibo:editor ([ a foaf:Person;
>         foaf:mbox<mailto:ben@adida.net>;
>         foaf:name "Ben Adida"] [ a foaf:Person;
>         foaf:mbox<mailto:mark.birbeck@webBackplane.com>;
>         foaf:name "Mark Birbeck"] [ a foaf:Person;
>         foaf:homepage<http://blog.halindrome.com>;
>         foaf:mbox<mailto:shane@aptest.com>;
>         foaf:name "Shane McCarron"] [ a foaf:Person;
>         foaf:homepage<http://www.w3.org/People/Ivan/>;
>         foaf:mbox<mailto:ivan@w3.org>;
>         foaf:name "Ivan Herman"]);
>     bibo:subtitle "Syntax and processing rules for embedding RDF through attributes";
>     xhv:license<http://www.w3.org/Consortium/Legal/ipr-notice#Copyright>;
>     xhv:stylesheet<http://www.w3.org/StyleSheets/TR/W3C-REC>  .
>
> <#web-service-output-graph-preference>  bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-07-01#resolution_1>  .
>
> <#T-IRI-reference>  a bibo:Chapter .
>
> <#a-description-of-rdfa-in-rdf-terms>  a bibo:Chapter .
>
> <#a_acks>  a bibo:Chapter .
>
> <#a_history>  a bibo:Chapter;
>     bibo:chapter<#major-differences-with-rdfa-syntax-1.0>  .
>
> <#abstract>  a bibo:Chapter;
>     bibo:chapter<#how-to-read-this-document>  .
>
> <#accessing-the-processor-graph>  a bibo:Chapter;
>     bibo:issue [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-07-01#resolution_1>],
>       [ a bibo:Issue] .
>
> <#attribute_roles>  a bibo:Chapter .
>
> <#chaining-with--property-and--typeof>  a bibo:Chapter .
>
> <#changing-the-evaluation-context>  a bibo:Chapter;
>     bibo:chapter<#setting-the-current-subject>  .
>
> <#compact-uri-expressions>  a bibo:Chapter .
>
> <#conformance>  a bibo:Chapter;
>     bibo:chapter<#processorconf>,
>       <#hostlangconf>,
>       <#xmlrdfaconformance>  .
>
> <#determining-the-subject-with-neither--about-nor--typeof>  a bibo:Chapter;
>     bibo:chapter<#inheriting-subject-from--resource>,
>       <#inheriting-an-anonymous-subject>  .
>
> <#evaluation-context>  a bibo:Chapter .
>
> <#examples>  a bibo:Chapter .
>
> <#general-use-of-curies-in-attributes>  a bibo:Chapter .
>
> <#graphs>  a bibo:Chapter .
>
> <#hostlangconf>  a bibo:Chapter .
>
> <#how-to-read-this-document>  a bibo:Chapter .
>
> <#incomplete-triples>  a bibo:Chapter .
>
> <#informative-references>  a bibo:Chapter .
>
> <#inheriting-an-anonymous-subject>  a bibo:Chapter .
>
> <#inheriting-subject-from--resource>  a bibo:Chapter .
>
> <#iri-object-resolution>  a bibo:Chapter;
>     bibo:chapter<#using--resource-to-set-the-object>,
>       <#using--href-or--src-to-set-the-subject>,
>       <#incomplete-triples>  .
>
> <#language-tags>  a bibo:Chapter .
>
> <#list-generation>  a bibo:Chapter .
>
> <#major-differences-with-rdfa-syntax-1.0>  a bibo:Chapter .
>
> <#markup-fragments-and-rdfa>  a bibo:Chapter .
>
> <#normative-references>  a bibo:Chapter .
>
> <#object-resolution>  a bibo:Chapter;
>     bibo:chapter<#object-resolution-for-the--property-attribute>,
>       <#iri-object-resolution>  .
>
> <#object-resolution-for-the--property-attribute>  a bibo:Chapter;
>     bibo:chapter<#plain-literals-1>,
>       <#typed-literals-1>,
>       <#s-xml-literals>  .
>
> <#overview>  a bibo:Chapter .
>
> <#plain-literals>  a bibo:Chapter .
>
> <#plain-literals-1>  a bibo:Chapter;
>     bibo:chapter<#language-tags>  .
>
> <#processor-graph-reporting>  a bibo:Chapter .
>
> <#processor-graph-terms>  a bibo:Chapter .
>
> <#processor-status>  a bibo:Chapter;
>     bibo:chapter<#accessing-the-processor-graph>,
>       <#processor-graph-terms>;
>     bibo:issue [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-07-15#resolution_1>] .
>
> <#processorconf>  a bibo:Chapter .
>
> <#rdfa-attributes>  a bibo:Chapter .
>
> <#references>  a bibo:Chapter;
>     bibo:chapter<#normative-references>,
>       <#informative-references>  .
>
> <#s-xml-literals>  a bibo:Chapter .
>
> <#s_Completing_Incomplete_Triples>  a bibo:Chapter .
>
> <#s_Syntax_overview>  a bibo:Chapter;
>     bibo:chapter<#rdfa-attributes>,
>       <#examples>  .
>
> <#s_blankNodes>  a bibo:Chapter;
>     bibo:issue [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-10-21#resolution_3>] .
>
> <#s_chaining>  a bibo:Chapter .
>
> <#s_curieprocessing>  a bibo:Chapter;
>     bibo:chapter<#scoping-of-prefix-mappings>,
>       <#general-use-of-curies-in-attributes>,
>       <#s_terms>,
>       <#use-of-curies-in-specific-attributes>,
>       <#s_blankNodes>;
>     bibo:issue [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-07-01#resolution_3>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-05-20#resolution_2>] .
>
> <#s_curies>  a bibo:Chapter;
>     bibo:chapter<#why-curies-and-not-qnames>  .
>
> <#s_datatypes>  a bibo:Chapter;
>     bibo:chapter<#xml-schema-definition>,
>       <#xml-dtd-definition>  .
>
> <#s_expansion_control>  a bibo:Chapter;
>     bibo:chapter<#s_vocab_guidelines>  .
>
> <#s_initialcontexts>  a bibo:Chapter;
>     bibo:issue [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-10-21#resolution_2>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-10-21#resolution_2>] .
>
> <#s_model>  a bibo:Chapter;
>     bibo:chapter<#overview>,
>       <#evaluation-context>,
>       <#s_chaining>,
>       <#s_curieprocessing>,
>       <#s_sequence>,
>       <#processor-status>,
>       <#vocabulary-expansion>  .
>
> <#s_motivation>  a bibo:Chapter .
>
> <#s_rdfaindetail>  a bibo:Chapter;
>     bibo:chapter<#changing-the-evaluation-context>,
>       <#s_Completing_Incomplete_Triples>,
>       <#object-resolution>,
>       <#list-generation>  .
>
> <#s_rdfterminology>  a bibo:Chapter;
>     bibo:chapter<#statements>,
>       <#triples>,
>       <#T-IRI-reference>,
>       <#plain-literals>,
>       <#typed-literals>,
>       <#turtle>,
>       <#graphs>,
>       <#compact-uri-expressions>,
>       <#markup-fragments-and-rdfa>,
>       <#a-description-of-rdfa-in-rdf-terms>  .
>
> <#s_sequence>  a bibo:Chapter;
>     bibo:issue [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-07-22#resolution_2>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-07-22#resolution_2>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-07-22#resolution_2>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2011-01-13#ISSUE__2d_62__3a____40_prefix_processing_order>,
>         <http://www.w3.org/2010/02/rdfa/meetings/2011-02-14#resolution_3>,
>         <http://www.w3.org/2010/02/rdfa/meetings/2010-05-13#resolution_1>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-05-13#resolution_3>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2011-11-10#resolution_2>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2011-11-10#resolution_2>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2011-11-10#resolution_2>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2011-11-10#resolution_2>],
>       [ a bibo:Issue],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-06-17#resolution_2>;
>       bibo:issue [ a bibo:Issue;
>         bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2011-01-13#ISSUE__2d_60__3a__XMLLiteral_context_preservation>]],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2011-11-10#resolution_2>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2011-11-10#resolution_2>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2011-11-10#resolution_2>],
>       [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-05-13#resolution_2>] .
>
> <#s_syntax>  a bibo:Chapter;
>     bibo:chapter<#attribute_roles>,
>       <#white_space>  .
>
> <#s_terms>  a bibo:Chapter .
>
> <#s_vocab_entailment>  a bibo:Chapter .
>
> <#s_vocab_expansion>  a bibo:Chapter;
>     bibo:chapter<#s_vocab_expansion_details>,
>       <#s_expansion_control>  .
>
> <#s_vocab_expansion_details>  a bibo:Chapter;
>     bibo:chapter<#s_vocab_entailment>  .
>
> <#s_vocab_guidelines>  a bibo:Chapter .
>
> <#scoping-of-prefix-mappings>  a bibo:Chapter .
>
> <#setting-the-current-subject>  a bibo:Chapter;
>     bibo:chapter<#the-current-document>,
>       <#using--about>,
>       <#typing-resources-with--typeof>,
>       <#determining-the-subject-with-neither--about-nor--typeof>  .
>
> <#sotd>  a bibo:Chapter .
>
> <#statements>  a bibo:Chapter .
>
> <#term-prefix-definitions-vocabulary>  a bibo:Chapter .
>
> <#the-current-document>  a bibo:Chapter .
>
> <#toc>  a bibo:Chapter .
>
> <#triples>  a bibo:Chapter .
>
> <#turtle>  a bibo:Chapter .
>
> <#typed-literals>  a bibo:Chapter .
>
> <#typed-literals-1>  a bibo:Chapter .
>
> <#typing-resources-with--typeof>  a bibo:Chapter;
>     bibo:chapter<#chaining-with--property-and--typeof>  .
>
> <#use-of-curies-in-specific-attributes>  a bibo:Chapter .
>
> <#using--about>  a bibo:Chapter .
>
> <#using--href-or--src-to-set-the-subject>  a bibo:Chapter .
>
> <#using--resource-to-set-the-object>  a bibo:Chapter .
>
> <#vocabulary>  a bibo:Chapter;
>     bibo:chapter<#term-prefix-definitions-vocabulary>,
>       <#processor-graph-reporting>,
>       <#vocabulary-relationship>  .
>
> <#vocabulary-expansion>  a bibo:Chapter .
>
> <#vocabulary-relationship>  a bibo:Chapter .
>
> <#white_space>  a bibo:Chapter;
>     bibo:issue [ a bibo:Issue;
>       bibo:affirmedBy<http://www.w3.org/2010/02/rdfa/meetings/2010-05-20#resolution_1>] .
>
> <#why-curies-and-not-qnames>  a bibo:Chapter .
>
> <#xml-dtd-definition>  a bibo:Chapter .
>
> <#xml-schema-definition>  a bibo:Chapter .
>
> <#xmlrdfaconformance>  a bibo:Chapter .
>
> Good work Shane!
>
> To get this in any ReSpec-based document, set "doRDFa" to "1.1" in your ReSpec configuration.
>
> Gregg
>
> [1] http://www.w3.org/TR/rdfa-core/
>

-- 
Shane McCarron
Managing Director, Applied Testing and Technology, Inc.
+1 763 786 8160 x120
Received on Friday, 8 June 2012 03:23:17 GMT

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