Class: RDF::RDFa::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/rdf/rdfa/context.rb,
lib/rdf/rdfa/context/xml.rb,
lib/rdf/rdfa/context/html.rb,
lib/rdf/rdfa/context/xhtml.rb

Overview

This file is automatically generated by ./script/intern_context RDFa context for www.w3.org/2011/rdfa-context/xhtml-rdfa-1.1

Instance Attribute Summary (collapse)

Class Method Summary (collapse)

Instance Method Summary (collapse)

Constructor Details

- (RDF::RDFa::Context) initialize(uri, options = {}) {|context| ... }

Initialize a new context from the given URI.

Parses the context and places it in the repository and cache

Parameters:

  • uri (RDF::URI, #to_s) —

    URI of context to be represented

Yields:

  • (context)

Yield Parameters:

Yield Returns:

  • (void) —

    ignored



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# File 'lib/rdf/rdfa/context.rb', line 37

def initialize(uri, options = {}, &block)
  @uri = RDF::URI.intern(uri)
  @prefixes = options.fetch(:prefixes, {})
  @terms = options.fetch(:terms, {})
  @vocabulary = options[:vocabulary]
  
  yield(self) if block_given?
  self
end

Instance Attribute Details

- (Hash{Symbol => RDF::URI}) prefixes (readonly)

Prefix mappings defined in this context

Returns:

  • (Hash{Symbol => RDF::URI}) 


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# File 'lib/rdf/rdfa/context.rb', line 13

def prefixes
  @prefixes
end

- (Hash{Symbol => RDF::URI}) terms (readonly)

Term mappings defined in this context

Returns:

  • (Hash{Symbol => RDF::URI}) 


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# File 'lib/rdf/rdfa/context.rb', line 17

def terms
  @terms
end

- (RDF::URI) uri (readonly)

URI defining this context

Returns:

  • (RDF::URI) 


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# File 'lib/rdf/rdfa/context.rb', line 25

def uri
  @uri
end

- (RDF::URI) vocabulary (readonly)

Default URI defined for this vocabulary

Returns:

  • (RDF::URI) 


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# File 'lib/rdf/rdfa/context.rb', line 21

def vocabulary
  @vocabulary
end

Class Method Details

+ (RDF::Util::Cache) cache

Returns:

  • (RDF::Util::Cache) 


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# File 'lib/rdf/rdfa/context.rb', line 50

def self.cache
  require 'rdf/util/cache' unless defined?(::RDF::Util::Cache)
  @cache ||= begin
    RDF::Util::Cache.new(-1)
  end
end

+ (Object) find_with_html_rdfa_1_1(uri) 



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# File 'lib/rdf/rdfa/context/html.rb', line 5

def self.find_with_html_rdfa_1_1(uri)
  if uri.to_s == "http://www.w3.org/2011/rdfa-context/html-rdfa-1.1"
    @_html_rdfa_1_1_prof ||= RDF::RDFa::Context.new(RDF::URI("http://www.w3.org/2011/rdfa-context/html-rdfa-1.1"), {
    })
  else
    find_without_html_rdfa_1_1(uri)
  end
end

+ (Object) find_with_rdfa_1_1(uri) 



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# File 'lib/rdf/rdfa/context/xml.rb', line 5

def self.find_with_rdfa_1_1(uri)
  if uri.to_s == "http://www.w3.org/2011/rdfa-context/rdfa-1.1"
    @_rdfa_1_1_prof ||= RDF::RDFa::Context.new(RDF::URI("http://www.w3.org/2011/rdfa-context/rdfa-1.1"), {
      :prefixes => {
        :cc      => "http://creativecommons.org/ns#",
        :ctag    => "http://commontag.org/ns#",
        :dc      => "http://purl.org/dc/terms/",
        :dcterms => "http://purl.org/dc/terms/",
        :foaf    => "http://xmlns.com/foaf/0.1/",
        :gr      => "http://purl.org/goodrelations/v1#",
        :grddl   => "http://www.w3.org/2003/g/data-view#",
        :ical    => "http://www.w3.org/2002/12/cal/icaltzd#",
        :ma      => "http://www.w3.org/ns/ma-ont#",
        :og      => "http://ogp.me/ns#",
        :owl     => "http://www.w3.org/2002/07/owl#",
        :rdf     => "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
        :rdfa    => "http://www.w3.org/ns/rdfa#",
        :rdfs    => "http://www.w3.org/2000/01/rdf-schema#",
        :rev     => "http://purl.org/stuff/rev#",
        :rif     => "http://www.w3.org/2007/rif#",
        :schema  => "http://schema.org/",
        :sioc    => "http://rdfs.org/sioc/ns#",
        :skos    => "http://www.w3.org/2004/02/skos/core#",
        :skosxl  => "http://www.w3.org/2008/05/skos-xl#",
        :v       => "http://rdf.data-vocabulary.org/#",
        :vcard   => "http://www.w3.org/2006/vcard/ns#",
        :void    => "http://rdfs.org/ns/void#",
        :wdr     => "http://www.w3.org/2007/05/powder#",
        :wdrs    => "http://www.w3.org/2007/05/powder-s#",
        :xhv     => "http://www.w3.org/1999/xhtml/vocab#",
        :xml     => "http://www.w3.org/XML/1998/namespace",
        :xsd     => "http://www.w3.org/2001/XMLSchema#",
      },
      :terms => {
        :describedby => "http://www.w3.org/2007/05/powder-s#describedby",
        :license     => "http://www.w3.org/1999/xhtml/vocab#license",
        :role        => "http://www.w3.org/1999/xhtml/vocab#role",
      },
    })
  else
    find_without_rdfa_1_1(uri)
  end
end

+ (Object) find_with_xhtml_rdfa_1_1(uri) Also known as: find 



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# File 'lib/rdf/rdfa/context/xhtml.rb', line 5

def self.find_with_xhtml_rdfa_1_1(uri)
  if uri.to_s == "http://www.w3.org/2011/rdfa-context/xhtml-rdfa-1.1"
    @_xhtml_rdfa_1_1_prof ||= RDF::RDFa::Context.new(RDF::URI("http://www.w3.org/2011/rdfa-context/xhtml-rdfa-1.1"), {
      :terms => {
        :alternate  => "http://www.w3.org/1999/xhtml/vocab#alternate",
        :appendix   => "http://www.w3.org/1999/xhtml/vocab#appendix",
        :bookmark   => "http://www.w3.org/1999/xhtml/vocab#bookmark",
        :chapter    => "http://www.w3.org/1999/xhtml/vocab#chapter",
        :cite       => "http://www.w3.org/1999/xhtml/vocab#cite",
        :contents   => "http://www.w3.org/1999/xhtml/vocab#contents",
        :copyright  => "http://www.w3.org/1999/xhtml/vocab#copyright",
        :first      => "http://www.w3.org/1999/xhtml/vocab#first",
        :glossary   => "http://www.w3.org/1999/xhtml/vocab#glossary",
        :help       => "http://www.w3.org/1999/xhtml/vocab#help",
        :icon       => "http://www.w3.org/1999/xhtml/vocab#icon",
        :index      => "http://www.w3.org/1999/xhtml/vocab#index",
        :last       => "http://www.w3.org/1999/xhtml/vocab#last",
        :license    => "http://www.w3.org/1999/xhtml/vocab#license",
        :meta       => "http://www.w3.org/1999/xhtml/vocab#meta",
        :next       => "http://www.w3.org/1999/xhtml/vocab#next",
        :p3pv1      => "http://www.w3.org/1999/xhtml/vocab#p3pv1",
        :prev       => "http://www.w3.org/1999/xhtml/vocab#prev",
        :previous   => "http://www.w3.org/1999/xhtml/vocab#previous",
        :section    => "http://www.w3.org/1999/xhtml/vocab#section",
        :start      => "http://www.w3.org/1999/xhtml/vocab#start",
        :stylesheet => "http://www.w3.org/1999/xhtml/vocab#stylesheet",
        :subsection => "http://www.w3.org/1999/xhtml/vocab#subsection",
        :top        => "http://www.w3.org/1999/xhtml/vocab#top",
        :up         => "http://www.w3.org/1999/xhtml/vocab#up",
      },
    })
  else
    find_without_xhtml_rdfa_1_1(uri)
  end
end

+ (Object) load(uri)

Load context into repository



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# File 'lib/rdf/rdfa/context.rb', line 95

def self.load(uri)
  uri = RDF::URI.intern(uri)
  repository.load(uri.to_s, :base_uri => uri, :context => uri) unless repository.has_context?(uri)
end

+ (RDF::Repository) repository

Repository used for saving contexts

Returns:

  • (RDF::Repository)

Raises:



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# File 'lib/rdf/rdfa/context.rb', line 61

def self.repository
  @repository ||= RDF::Repository.new(:title => "RDFa Contexts")
end

+ (RDF::Repository) repository=(repo)

Set repository used for saving contexts

Parameters:

  • repo (RDF::Repository)

Returns:

  • (RDF::Repository)

Raises:



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# File 'lib/rdf/rdfa/context.rb', line 69

def self.repository=(repo)
  raise ContextError, "Context Repository must support context" unless repo.supports?(:context)
  @repository = repo
end

Instance Method Details

- (void) parse(enumerable)

This method returns an undefined value.

Extract vocabulary, prefix mappings and terms from a enumerable object into an instance

Parameters:

  • queryable (RDF::Enumerable, Enumerator) 


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# File 'lib/rdf/rdfa/context.rb', line 154

def parse(enumerable)
  STDERR.puts("process_context: parse context <#{uri}>") if RDF::RDFa.debug?
  resource_info = {}
  enumerable.each do |statement|
    res = resource_info[statement.subject] ||= {}
    next unless statement.object.is_a?(RDF::Literal)
    STDERR.puts("process_context: statement=#{statement.inspect}") if RDF::RDFa.debug?
    %w(uri term prefix vocabulary).each do |term|
      res[term] ||= statement.object.value if statement.predicate == RDF::RDFA[term]
    end
  end

  resource_info.values.each do |res|
    # If one of the objects is not a Literal or if there are additional rdfa:uri or rdfa:term
    # predicates sharing the same subject, no mapping is created.
    uri = res["uri"]
    term = res["term"]
    prefix = res["prefix"]
    vocab = res["vocabulary"]
    STDERR.puts("process_context: uri=#{uri.inspect}, term=#{term.inspect}, prefix=#{prefix.inspect}, vocabulary=#{vocab.inspect}") if RDF::RDFa.debug?

    @vocabulary = vocab if vocab
    
    # For every extracted triple that is the common subject of an rdfa:prefix and an rdfa:uri
    # predicate, create a mapping from the object literal of the rdfa:prefix predicate to the
    # object literal of the rdfa:uri predicate. Add or update this mapping in the local list of
    # URI mappings after transforming the 'prefix' component to lower-case.
    # For every extracted
    prefix(prefix.downcase, uri) if uri && prefix && prefix != "_"
  
    # triple that is the common subject of an rdfa:term and an rdfa:uri predicate, create a
    # mapping from the object literal of the rdfa:term predicate to the object literal of the
    # rdfa:uri predicate. Add or update this mapping in the local term mappings.
    term(term, uri) if term && uri
  end
end

- (RDF::URI) prefix(name, uri) - (RDF::URI) prefix(name)

Defines the given named URI prefix for this context.

Examples:

Defining a URI prefix

context.prefix :dc, RDF::URI('http://purl.org/dc/terms/')

Returning a URI prefix

context.prefix(:dc)    #=> RDF::URI('http://purl.org/dc/terms/')

Overloads:

  • - (RDF::URI) prefix(name, uri)

    Parameters:

    • name (Symbol, #to_s)
    • uri (RDF::URI, #to_s)
  • - (RDF::URI) prefix(name)

    Parameters:

    • name (Symbol, #to_s)

Returns:

  • (RDF::URI) 


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# File 'lib/rdf/rdfa/context.rb', line 122

def prefix(name, uri = nil)
  name = name.to_s.empty? ? nil : (name.respond_to?(:to_sym) ? name.to_sym : name.to_s.to_sym)
  uri.nil? ? prefixes[name] : prefixes[name] = uri
end

- (RDF::Repository) repository

Returns:

  • (RDF::Repository) 


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# File 'lib/rdf/rdfa/context.rb', line 101

def repository
  Context.repository
end

- (RDF::URI) term(name, uri) - (RDF::URI) term(name)

Defines the given named URI term for this context.

Examples:

Defining a URI term

context.term :title, RDF::URI('http://purl.org/dc/terms/title')

Returning a URI context

context.term(:title)    #=> RDF::URI('http://purl.org/dc/terms/TITLE')

Overloads:

  • - (RDF::URI) term(name, uri)

    Parameters:

    • name (Symbol, #to_s)
    • uri (RDF::URI, #to_s)
  • - (RDF::URI) term(name)

    Parameters:

    • name (Symbol, #to_s)

Returns:

  • (RDF::URI) 


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# File 'lib/rdf/rdfa/context.rb', line 144

def term(name, uri = nil)
  name = name.to_s.empty? ? nil : (name.respond_to?(:to_sym) ? name.to_sym : name.to_s.to_sym)
  uri.nil? ? terms[name] : terms[name] = uri
end