Class: RDF::Vocabulary

Inherits:
Object show all
Extended by:
Enumerable
Defined in:
vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb,
vendor/bundler/ruby/2.5.0/bundler/gems/rdf-vocab-f34ce0a86d84/lib/rdf/vocab/extensions.rb,
vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocab/writer.rb

Overview

Vocabulary format specification. This can be used to generate a Ruby class definition from a loaded vocabulary.

Definitions can include recursive term definitions, when the value of a property is a blank-node term. They can also include list definitions, to provide a reasonable way to represent owl:unionOf-type relationships.

Examples:

a simple term definition

property :comment,
  comment: %(A description of the subject resource.).freeze,
  domain: "rdfs:Resource".freeze,
  label: "comment".freeze,
  range: "rdfs:Literal".freeze,
  isDefinedBy: %(rdfs:).freeze,
  type: "rdf:Property".freeze

an embedded skos:Concept

term :ad,
  exactMatch: [term(
      type: "skos:Concept".freeze,
      inScheme: "country:iso3166-1-alpha-2".freeze,
      notation: %(ad).freeze
    ), term(
      type: "skos:Concept".freeze,
      inScheme: "country:iso3166-1-alpha-3".freeze,
      notation: %(and).freeze
    )],
  "foaf:name": "Andorra".freeze,
  isDefinedBy: "country:".freeze,
  type: "http://sweet.jpl.nasa.gov/2.3/humanJurisdiction.owl#Country".freeze

owl:unionOf

property :duration,
  comment: %(The duration of a track or a signal in ms).freeze,
  domain: term(
      "owl:unionOf": list("mo:Track".freeze, "mo:Signal".freeze),
      type: "owl:Class".freeze
    ),
  isDefinedBy: "mo:".freeze,
  "mo:level": "1".freeze,
  range: "xsd:float".freeze,
  type: "owl:DatatypeProperty".freeze,
  "vs:term_status": "testing".freeze

Defined Under Namespace

Modules: Term, VocabFormatExtensions Classes: Format, Writer

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(uri) ⇒ Vocabulary

Returns a new instance of Vocabulary

Parameters:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 629

def initialize(uri)
  @uri = case uri
    when RDF::URI then uri.to_s
    else RDF::URI.parse(uri.to_s) ? uri.to_s : nil
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(property, *args, &block) ⇒ Object (protected) 



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 679

def method_missing(property, *args, &block)
  property = self.class.camelize(property.to_s)
  if %w(to_ary).include?(property.to_s)
    super
  elsif args.empty?
    self[property]
  else
    super
  end
end

Class Method Details

.[](property) ⇒ RDF::URI

Returns the URI for the term property in this vocabulary.

Parameters:

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 340

def [](property)
  if props.has_key?(property.to_sym)
    props[property.to_sym]
  else
    Term.intern([to_s, property.to_s].join(''), vocab: self, attributes: {})
  end
end

.__prefix__ ⇒ Symbol

Returns a suggested CURIE/PName prefix for this vocabulary class.

Returns:

Since:

  • 0.3.0



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 584

def __prefix__
  __name__.split('::').last.downcase.to_sym
end

._orig_each {|klass| ... } ⇒ Enumerator

Enumerates known RDF vocabulary classes.

Yields:

  • (klass)

Yield Parameters:

  • klass (Class)

Returns:

  • (Enumerator) 


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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-vocab-f34ce0a86d84/lib/rdf/vocab/extensions.rb', line 17

alias_method :_orig_each, :each

.camelize(str) ⇒ Object (protected) 



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 690

def self.camelize(str)
  str.split('_').inject([]) do |buffer, e| 
    buffer.push(buffer.empty? ? e : e.capitalize)
  end.join
end

.each {|klass| ... } ⇒ Enumerator

Enumerates known RDF vocabulary classes.

Yields:

  • (klass)

Yield Parameters:

  • klass (Class)

Returns:

  • (Enumerator) 


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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 68

def each(&block)
  # This is needed since all vocabulary classes are defined using
  # Ruby's autoloading facility, meaning that `@@subclasses` will be
  # empty until each subclass has been touched or require'd.
  RDF::Vocab::VOCABS.each do |n, params|
    begin
      require "rdf/vocab/#{n}"
    rescue LoadError
      # Transient error
      warn "Failed to load #{n}"
    end
  end
  _orig_each(&block)
end

.each_statement {|| ... } ⇒ Object

Enumerate each statement constructed from the defined vocabulary terms

If a property value is known to be a URI, or expands to a URI, the object is a URI, otherwise, it will be a Literal.

Yields:

  • statement

Yield Parameters:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 405

def each_statement(&block)
  props.each do |name, subject|
    subject.each_statement(&block)
  end

  # Also include the ontology, if it's not also a property
  @ontology.each_statement(&block) if @ontology && @ontology != self
end

.enum_for(method = :each_statement, *args) ⇒ RDF::Enumerable::Enumerator Also known as: to_enum

Return an enumerator over Statement defined for this vocabulary.

Returns:

See Also:

  • Object#enum_for


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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 389

def enum_for(method = :each_statement, *args)
  # Ensure that enumerators are, themselves, queryable
  this = self
  Enumerable::Enumerator.new do |yielder|
    this.send(method, *args) {|*y| yielder << (y.length > 1 ? y : y.first)}
  end
end

.expand_pname(pname) ⇒ Term

Attempt to expand a Compact IRI/PName/QName using loaded vocabularies

Parameters:

Returns:

Raises:

  • (KeyError) —

    if pname suffix not found in identified vocabulary

  • (ArgumentError) —

    if resulting URI is not valid



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 289

def expand_pname(pname)
  return pname unless pname.is_a?(String) || pname.is_a?(Symbol)
  prefix, suffix = pname.to_s.split(":", 2)
  if prefix == "rdf"
    RDF[suffix]
  elsif vocab = RDF::Vocabulary.each.detect {|v| v.__name__ && v.__prefix__ == prefix.to_sym}
    suffix.to_s.empty? ? vocab.to_uri : vocab[suffix]
  else
    (RDF::Vocabulary.find_term(pname) rescue nil) || RDF::URI(pname, validate: true)
  end
end

.find(uri) ⇒ Vocabulary

Return the Vocabulary associated with a URI. Allows the trailing '/' or '#' to be excluded

Parameters:

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 306

def find(uri)
  uri = RDF::URI(uri) if uri.is_a?(String)
  return nil unless uri.uri? && uri.valid?
  RDF::Vocabulary.detect do |v|
    if uri.length >= v.to_uri.length
      uri.start_with?(v.to_uri)
    else
      v.to_uri.to_s.sub(%r([/#]$), '') == uri.to_s
    end
  end
end

.find_term(uri) ⇒ Vocabulary::Term

Return the Vocabulary term associated with a URI

Parameters:

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 323

def find_term(uri)
  uri = RDF::URI(uri)
  return uri if uri.is_a?(Vocabulary::Term)
  if vocab = find(uri)
    if vocab.ontology == uri
      vocab.ontology
    else
      vocab[uri.to_s[vocab.to_uri.to_s.length..-1].to_s]
    end
  end
end

.from_graph(graph, url: nil, class_name: nil, extra: nil) ⇒ RDF::Vocabulary

Create a vocabulary from a graph or enumerable

Parameters:

  • graph (RDF::Enumerable)
  • url (URI, #to_s)
  • class_name (RDF::Vocabulary, String) —

    The class_name associated with the vocabulary, used for creating the class name of the vocabulary. This will create a new class named with a top-level constant based on class_name. If given an existing vocabulary, it replaces the existing definitions for that vocabulary with those from the graph.

  • extra (Array<Symbol>, Hash{Symbol => Hash}) —

    Extra terms to add to the vocabulary. In the first form, it is an array of symbols, for which terms are created. In the second, it is a Hash mapping symbols to property attributes, as described in property.

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 432

def from_graph(graph, url: nil, class_name: nil, extra: nil)
  vocab = case class_name
  when RDF::Vocabulary
    class_name.instance_variable_set(:@ontology, nil)
    class_name.instance_variable_set(:@properties, nil)
    class_name
  when String
    Object.const_set(class_name, Class.new(self.create(url)))
  else
    Class.new(self.create(url))
  end

  ont_url = url.to_s.sub(%r([/#]$), '')
  term_defs = {}
  embedded_defs = {}
  graph.each do |statement|
    #next unless statement.subject.uri?
    if statement.subject.start_with?(url) || statement.subject == ont_url
      name = statement.subject.to_s[url.to_s.length..-1].to_s
      term = (term_defs[name.to_sym] ||= {})
    else
      # subject is not a URI or is not associated with the vocabulary
      term = (embedded_defs[statement.subject] ||= {})
    end

    key = case statement.predicate
    when RDF.type                                     then :type
    when RDF::RDFS.comment                            then :comment
    when RDF::RDFS.domain                             then :domain
    when RDF::RDFS.isDefinedBy                        then :isDefinedBy
    when RDF::RDFS.label                              then :label
    when RDF::RDFS.range                              then :range
    when RDF::RDFS.subClassOf                         then :subClassOf
    when RDF::RDFS.subPropertyOf                      then :subPropertyOf
    when RDF::URI("http://schema.org/domainIncludes") then :domainIncludes
    when RDF::URI("http://schema.org/rangeIncludes")  then :rangeIncludes
    when RDF::URI("http://www.w3.org/2002/07/owl#allValuesFrom")        then :allValuesFrom
    when RDF::URI("http://www.w3.org/2002/07/owl#cardinality")          then :cardinality
    when RDF::URI("http://www.w3.org/2002/07/owl#equivalentClass")      then :equivalentClass
    when RDF::URI("http://www.w3.org/2002/07/owl#equivalentProperty")   then :equivalentProperty
    when RDF::URI("http://www.w3.org/2002/07/owl#intersectionOf")       then :intersectionOf
    when RDF::URI("http://www.w3.org/2002/07/owl#inverseOf")            then :inverseOf
    when RDF::URI("http://www.w3.org/2002/07/owl#maxCardinality")       then :maxCardinality
    when RDF::URI("http://www.w3.org/2002/07/owl#minCardinality")       then :minCardinality
    when RDF::URI("http://www.w3.org/2002/07/owl#onProperty")           then :onProperty
    when RDF::URI("http://www.w3.org/2002/07/owl#someValuesFrom")       then :someValuesFrom
    when RDF::URI("http://www.w3.org/2002/07/owl#unionOf")              then :unionOf
    when RDF::URI("http://www.w3.org/2004/02/skos/core#altLabel")       then :altLabel
    when RDF::URI("http://www.w3.org/2004/02/skos/core#broader")        then :broader
    when RDF::URI("http://www.w3.org/2004/02/skos/core#definition")     then :definition
    when RDF::URI("http://www.w3.org/2004/02/skos/core#editorialNote")  then :editorialNote
    when RDF::URI("http://www.w3.org/2004/02/skos/core#exactMatch")     then :exactMatch
    when RDF::URI("http://www.w3.org/2004/02/skos/core#hasTopConcept")  then :hasTopConcept
    when RDF::URI("http://www.w3.org/2004/02/skos/core#inScheme")       then :inScheme
    when RDF::URI("http://www.w3.org/2004/02/skos/core#member")         then :member
    when RDF::URI("http://www.w3.org/2004/02/skos/core#narrower")       then :narrower
    when RDF::URI("http://www.w3.org/2004/02/skos/core#notation")       then :notation
    when RDF::URI("http://www.w3.org/2004/02/skos/core#note")           then :note
    when RDF::URI("http://www.w3.org/2004/02/skos/core#prefLabel")      then :prefLabel
    when RDF::URI("http://www.w3.org/2004/02/skos/core#related")        then :related
    else                                              statement.predicate.pname.to_sym
    end

    # Skip literals other than plain or english
    # This is because the ruby representation does not preserve language
    next if statement.object.literal? && (statement.object.language || :en).to_s !~ /^en-?/

    (term[key] ||= []) << statement.object
  end

  # Create extra terms
  term_defs = case extra
  when Array
    extra.inject({}) {|memo, s| memo[s.to_sym] = {}; memo}.merge(term_defs)
  when Hash
    extra.merge(term_defs)
  else
    term_defs
  end

  # Pass over embedded_defs with anonymous references, once
  embedded_defs.each do |term, attributes|
    attributes.each do |ak, avs|
      # Turn embedded BNodes into either their Term definition or a List
      avs = [avs] unless avs.is_a?(Array)
      attributes[ak] = avs.map do |av|
        l = RDF::List.new(subject: av, graph: graph)
        if l.valid?
          RDF::List.new(subject: av) do |nl|
            l.each do |lv|
              nl << (embedded_defs[lv] ? Term.new(vocab: vocab, attributes: embedded_defs[lv]) : lv)
            end
          end
        elsif av.is_a?(RDF::Node)
          Term.new(vocab: vocab, attributes: embedded_defs[av]) if embedded_defs[av]
        else
          av
        end
      end.compact
    end
  end

  term_defs.each do |term, attributes|
    # Turn embedded BNodes into either their Term definition or a List
    attributes.each do |ak, avs|
      attributes[ak] = avs.is_a?(Array) ? avs.map do |av|
        l = RDF::List.new(subject: av, graph: graph)
        if l.valid?
          RDF::List.new(subject: av) do |nl|
            l.each do |lv|
              nl << (embedded_defs[lv] ? Term.new(vocab: vocab, attributes: embedded_defs[lv]) : lv)
            end
          end
        elsif av.is_a?(RDF::Node)
          Term.new(vocab: vocab, attributes: embedded_defs[av]) if embedded_defs[av]
        else
          av
        end
      end.compact : avs
    end

    if term == :"
      vocab.__ontology__ vocab, attributes
    else
      vocab.__property__ term, attributes
    end
  end

  vocab
end

.imported_from ⇒ Array<RDF::Vocabulary>

List of vocabularies which import this vocabulary

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 368

def imported_from
  @imported_from ||= begin
    RDF::Vocabulary.select {|v| v.__imports__.include?(self)}
  end
end

.imports ⇒ Array<RDF::Vocabulary> Also known as: __imports__

Note:

the alias <strong>imports</strong> guards against RDF::OWL.imports returning a term, rather than an array of vocabularies

List of vocabularies this vocabulary owl:imports

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 353

def imports
  return [] unless self.ontology
  @imports ||= begin
    Array(self.ontology.attributes[:owl:imports"]).map do |pn|
      find(expand_pname(pn)) rescue nil
    end.compact
  rescue KeyError
    []
  end
end

.inspect ⇒ String

Returns a developer-friendly representation of this vocabulary class.

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 567

def inspect
  if self == Vocabulary
    self.to_s
  else
    sprintf("%s(%s)", superclass.to_s, to_s)
  end
end

.list(*values) ⇒ RDF::List (protected)

Create a list of terms

Parameters:

  • values (Array<String>) —

    Each value treated as a URI or PName

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 612

def list(*values)
  RDF::List[*values.map {|v| expand_pname(v) rescue RDF::Literal(v)}]
end

.method_missing(property, *args, &block) ⇒ Object (protected) 



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 599

def method_missing(property, *args, &block)
  property = RDF::Vocabulary.camelize(property.to_s)
  if args.empty? && !to_s.empty?
    Term.intern([to_s, property.to_s].join(''), vocab: self, attributes: {})
  else
    super
  end
end

.ontology ⇒ RDF::Vocabulary::Term .ontology(name, options) ⇒ RDF::Vocabulary::Term Also known as: __ontology__

Note:

If the ontology URI has the vocabulary namespace URI as a prefix, it may also be defined using #property or #term

Overloads:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 257

def ontology(*args)
  case args.length
  when 0
    @ontology
  else
    uri, options = args
    URI.cache.delete(uri.to_s.to_sym)  # Clear any previous entry
    # Term attributes passed in a block for lazy evaluation. This helps to avoid load-time circular dependencies
    @ontology = Term.intern(uri.to_s, vocab: self, attributes: options)

    # If the URI is the same as the vocabulary namespace, also define it as a term
    props[:"] ||= @ontology if self.to_s == uri.to_s

    @ontology
  end
end

.properties ⇒ Object Also known as: __properties__

@return [ArrayRDF::URI] a list of properties in the current vocabulary



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 277

def properties
  props.values
end

.property ⇒ RDF::Vocabulary::Term .property(name, options) ⇒ RDF::Vocabulary::Term Also known as: term, __property__

Overloads:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 189

def property(*args)
  case args.length
  when 0
    Term.intern("#{self}property", vocab: self, attributes: {})
  else
    name = args.shift unless args.first.is_a?(Hash)
    options = args.last
    if name
      uri_str = [to_s, name.to_s].join('')
      URI.cache.delete(uri_str.to_sym)  # Clear any previous entry

      # Term attributes passed in a block for lazy evaluation. This helps to avoid load-time circular dependencies
      prop = Term.intern(uri_str, vocab: self, attributes: options)
      props[name.to_sym] = prop

      # If name is empty, also treat it as the ontology
      @ontology ||= prop if name.to_s.empty?

      # Define an accessor, except for problematic properties
      (class << self; self; end).send(:define_method, name) { prop } unless %w(property hash).include?(name.to_s)
    else
      # Define the term without a name
      # Term attributes passed in a block for lazy evaluation. This helps to avoid load-time circular dependencies
      prop = Term.new(vocab: self, attributes: options)
    end
    prop
  end
end

.strict? ⇒ Boolean

Is this a strict vocabulary, or a liberal vocabulary allowing arbitrary properties?

Returns:

  • (Boolean) 


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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 82

def strict?; false; end

.to_html(graph: nil, prefixes: nil, jsonld: nil, template: nil) ⇒ String

Generate HTML+RDFa representation, specific to vocabularies. This uses generated JSON-LD and a Haml template.

Parameters:

  • :graph (RDF::Queryable) —

    Optional graph, otherwise uses statements from vocabulary.

  • Prefixes (Hash{#to_sym => String}) —

    to add to output

  • jsonld (String, Hash) —

    If not provided, the to_jsonld method is used to generate it.

  • template (String) —

    The path to a Haml or ERB template used to generate the output using the JSON-LD serialization

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-vocab-f34ce0a86d84/lib/rdf/vocab/extensions.rb', line 276

def to_html(graph: nil, prefixes: nil, jsonld: nil, template: nil)
  # Find namespaces used in the vocabulary
  graph = RDF::Graph.new {|g| each_statement {|s| g << s}} if graph.nil? || graph.empty?

  # Get JSON as an object
  json = case jsonld
  when String then ::JSON.parse(File.read jsonld)
  when Hash   then jsonld
  else
    ::JSON.parse(to_jsonld(graph: graph, prefixes: prefixes))
  end
  raise "Expected JSON-LD data within the '@graph' key" unless json.has_key?('@graph')

  template ||= File.expand_path("../../../../etc/template.erb", __FILE__)

  prefixes = vocab_prefixes(graph).merge(prefixes || {})
  prefixes[:owl] = RDF::OWL.to_uri.to_s

  # Make sure ontology is typed
  json['@graph']['@type'] ||= ['owl:Ontology']

  jld_context = ::JSON::LD::Context.new.parse([json['@context'], json['@graph']['@context']])

  # Expand the JSON-LD to normalize accesses
  expanded = ::JSON::LD::API.expand(json).first
  expanded.delete('@reverse')

  # Re-compact keys
  expanded = expanded.inject({}) do |memo, (k, v)|
    term = RDF::Vocabulary.find_term(k)
    k = term.pname if term
    memo.merge(k => v)
  end

  # Normalize label accessors
  expanded['rdfs:label'] ||= %w(dc:title dc11:title skos:prefLabel).inject(nil) do |memo, key|
    memo || expanded[key]
  end || [{'@value' => json['@graph']['@id']}]
  %w(rdfs_classes rdfs_properties rdfs_datatypes rdfs_instances).each do |section|
    next unless json['@graph'][section]
    json['@graph'][section].each do |node|
      node['rdfs:label'] ||= %w(dc:title dc11:title skos:prefLabel).inject do |memo, key|
        memo || node[key]
      end || [{'@value' => node['@id']}]
    end
  end

  # Expand each part separately, as well.
  %w(rdfs_classes rdfs_properties rdfs_datatypes rdfs_instances).each do |section|
    next unless json['@graph'][section]
    expanded_section = ::JSON::LD::API.expand(json['@graph'][section], expandContext: jld_context)
    # Re-compact keys
    expanded[section] = expanded_section.map do |node|
      node.inject({}) do |memo, (k, v)|
        term = RDF::Vocabulary.find_term(k)
        k = term.pname if term
        memo.merge(k => v)
      end
    end
  end

  # Template invoked with expanded JSON-LD with outer object including `rdfs_classes`, `rdfs_properties`, and `rdf_instances` sections.
  case template
  when /.haml$/
    require 'haml'
    haml = Haml::Engine.new(File.read(template))
    haml.render(self, ont: expanded, context: json['@context'], prefixes: prefixes)
  when /.erb$/
    require 'erubis'
    eruby = Erubis::FastEruby.new(File.read(template))
    result = eruby.evaluate(binding: self, ont: expanded, context: json['@context'], prefixes: prefixes)
  else
    raise "Unknown template type #{template}. Should have '.erb' or '.haml' extension"
  end
end

.to_iri ⇒ RDF::URI

Returns the base URI for this vocabulary class. For IRI compatibility

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 383

def to_uri
  RDF::URI.intern(@@uris[self].to_s)
end

.to_s ⇒ String

Returns a string representation of this vocabulary class.

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 418

def to_s
  @@uris.has_key?(self) ? @@uris[self].to_s : super
end

.to_uri ⇒ RDF::URI

Returns the base URI for this vocabulary class.

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 378

def to_uri
  RDF::URI.intern(@@uris[self].to_s)
end

.value_to_html(property, value, tag) ⇒ Object

Create HTML for values (Helper method, needs to be public)



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-vocab-f34ce0a86d84/lib/rdf/vocab/extensions.rb', line 354

def value_to_html(property, value, tag)
  value.map do |v|
    %(<#{tag} property="#{property}") +
    if v['@value']
      (v['@language'] ? %( lang="#{v['@language']}") : "") +
      (v['@type'] ? %( datatype="#{RDF::URI(v['@type']).pname}") : "") +
      %(>#{v['@value']})
    elsif v['@id']
      %( resource="#{RDF::URI(v['@id']).pname}">#{RDF::URI(v['@id']).pname})
    else
      raise "Unknown value type: #{v.inspect}, #{property}"
    end +
    %(</#{tag}>)
  end.join("\n")
end

Instance Method Details

#[](property) ⇒ URI

Returns the URI for the term property in this vocabulary.

Parameters:

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 641

def [](property)
  Term.intern([to_s, property.to_s].join(''), vocab: self.class, attributes: {})
end

#inspect ⇒ String

Returns a developer-friendly representation of this vocabulary.

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 668

def inspect
  sprintf("#<%s:%#0x(%s)>", self.class.name, __id__, to_s)
end

#to_s ⇒ String

Returns a string representation of this vocabulary.

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 660

def to_s
  @uri.to_s
end

#to_uri ⇒ URI Also known as: to_iri

Returns the base URI for this vocabulary.

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-1b20f426c35b/lib/rdf/vocabulary.rb', line 649

def to_uri
  RDF::URI.intern(to_s)
end