Class: ODRL::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/odrl/base.rb

Direct Known Subclasses

Action, Asset, Constraint, Party, Policy, Rule

Constant Summary collapse

@@repository = 
RDF::Repository.new

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(uid:, type:, title: nil, creator: nil, description: nil, issued: nil, subject: nil, baseURI: "http://example.org", id: nil, label: nil, **_) ⇒ Base

Returns a new instance of Base.



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# File 'lib/odrl/base.rb', line 115

def initialize(
  uid:, type:, title: nil,
  creator: nil,
  description: nil,
  issued: nil,
  subject: nil,
  baseURI: "http://example.org",
  id: nil,
  label: nil,
  **_
)

  @title = title
  @creator = creator
  @issued = issued
  @description = description
  @subject = subject
  @baseURI = baseURI || ODRL::Base.baseURI
  @uid = uid
  @type = type
  @label = label || @title
  @id = @uid

  raise "Every object must have a uid - attempt to create #{@type}" unless @uid
  raise "Every object must have a type - " unless @type

  $g = RDF::Graph.new
  $format = if ENV["TRIPLES_FORMAT"]
              ENV["TRIPLES_FORMAT"].to_sym
            else
              :jsonld
            end
end

Instance Attribute Details

#baseURI ⇒ Object

If you add an attribute, you mustr also add it to the constructor, and to the @attribute list andn to the .load_graph



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# File 'lib/odrl/base.rb', line 96

def baseURI
  @baseURI
end

#creator ⇒ Object

If you add an attribute, you mustr also add it to the constructor, and to the @attribute list andn to the .load_graph



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# File 'lib/odrl/base.rb', line 96

def creator
  @creator
end

#description ⇒ Object

If you add an attribute, you mustr also add it to the constructor, and to the @attribute list andn to the .load_graph



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# File 'lib/odrl/base.rb', line 96

def description
  @description
end

#id ⇒ Object

If you add an attribute, you mustr also add it to the constructor, and to the @attribute list andn to the .load_graph



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# File 'lib/odrl/base.rb', line 96

def id
  @id
end

#issued ⇒ Object

If you add an attribute, you mustr also add it to the constructor, and to the @attribute list andn to the .load_graph



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# File 'lib/odrl/base.rb', line 96

def issued
  @issued
end

#label ⇒ Object

If you add an attribute, you mustr also add it to the constructor, and to the @attribute list andn to the .load_graph



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# File 'lib/odrl/base.rb', line 96

def label
  @label
end

#subject ⇒ Object

If you add an attribute, you mustr also add it to the constructor, and to the @attribute list andn to the .load_graph



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# File 'lib/odrl/base.rb', line 96

def subject
  @subject
end

#title ⇒ Object

If you add an attribute, you mustr also add it to the constructor, and to the @attribute list andn to the .load_graph



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# File 'lib/odrl/base.rb', line 96

def title
  @title
end

#type ⇒ Object

If you add an attribute, you mustr also add it to the constructor, and to the @attribute list andn to the .load_graph



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# File 'lib/odrl/base.rb', line 96

def type
  @type
end

#uid ⇒ Object

If you add an attribute, you mustr also add it to the constructor, and to the @attribute list andn to the .load_graph



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# File 'lib/odrl/base.rb', line 96

def uid
  @uid
end

Class Method Details

.baseURI ⇒ Object 



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# File 'lib/odrl/base.rb', line 98

def self.baseURI
  ENV["ODRL_BASEURI"] || "http://example.org"
end

.clear_repository ⇒ Object 



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# File 'lib/odrl/base.rb', line 110

def self.clear_repository
  @@repository.clear!
  true
end

.getuuid ⇒ Object 



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# File 'lib/odrl/base.rb', line 205

def self.getuuid
  Time.now.to_f.to_s.gsub(".", "")[1..14]
end

.repository ⇒ Object 



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# File 'lib/odrl/base.rb', line 102

def self.repository
  @@repository
end

Instance Method Details

#get_writer(type:) ⇒ Object 



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# File 'lib/odrl/base.rb', line 149

def get_writer(type:)
  RDF::Writer.for(type)
  # w.prefix(:foaf, RDF::URI.new("http://xmlns.com/foaf/0.1/"))
  # w.prefix(:dc, RDF::URI.new("http://purl.org/dc/terms/"))
  # w.prefix(:rdf, RDF::URI.new("http://www.w3.org/1999/02/22-rdf-syntax-ns#"))
  # w.prefix(:rdfs, RDF::URI.new("http://www.w3.org/2000/01/rdf-schema#"))
  # w.prefix(:vcard, RDF::URI.new("http://www.w3.org/2006/vcard/ns#"))
  # w.prefix(:odrl, RDF::URI.new("http://www.w3.org/ns/odrl/2/"))
  # w.prefix(:this, RDF::URI.new("http://w3id.org/FAIR_Training_LDP/DAV/home/LDP/DUC-CCE/IPGB#"))
  # w.prefix(:obo, RDF::URI.new("http://purl.obolibrary.org/obo/"))
  # w.prefix(:xsd, RDF::URI.new("http://www.w3.org/2001/XMLSchema#"))
  # w.prefix(:orcid, RDF::URI.new("https://orcid.org/"))
  # warn "W"
  # warn w.prefixes.inspect
end

#load_graph ⇒ Object 



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# File 'lib/odrl/base.rb', line 209

def load_graph
  %i[title label issued creator description subject uid id type].each do |method|
    next unless send(method)
    next if send(method).empty?

    subject = uid # me!
    predicate = PROPERTIES[method] # look up the predicate for this property
    # warn "prediate #{predicate} for method #{method}"
    object = send(method) # get the value of this property from self
    # warn "value #{object.to_s}"
    repo = repository
    triplify(subject, predicate, object, repo)
  end
end

#repository ⇒ Object 



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# File 'lib/odrl/base.rb', line 106

def repository
  @@repository
end

#serialize(format: $format) ⇒ Object 



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# File 'lib/odrl/base.rb', line 224

def serialize(format: $format)
  format = format.to_sym
  w = get_writer(type: format)
  w.dump(repository)
end

#triplify(s, p, o, repo) ⇒ Object 



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# File 'lib/odrl/base.rb', line 165

def triplify(s, p, o, repo)
  s = s.strip if s.instance_of?(String)
  p = p.strip if p.instance_of?(String)
  o = o.strip if o.instance_of?(String)

  unless s.respond_to?("uri")

    raise "Subject #{s} must be a URI-compatible thingy #{s}, #{p}, #{o}" unless s.to_s =~ %r{^\w+:/?/?[^\s]+}

    s = RDF::URI.new(s.to_s)

  end

  unless p.respond_to?("uri")

    raise "Predicate #{p} must be a URI-compatible thingy #{s}, #{p}, #{o}" unless p.to_s =~ %r{^\w+:/?/?[^\s]+}

    p = RDF::URI.new(p.to_s)

  end
  unless o.respond_to?("uri")
    o = if o.to_s =~ %r{^\w+:/?/?[^\s]+}
          RDF::URI.new(o.to_s)
        elsif o.to_s =~ /^\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d/
          RDF::Literal.new(o.to_s, datatype: RDF::XSD.date)
        elsif o.to_s =~ /^\d\.\d/
          RDF::Literal.new(o.to_s, datatype: RDF::XSD.float)
        elsif o.to_s =~ /^[0-9]+$/
          RDF::Literal.new(o.to_s, datatype: RDF::XSD.int)
        else
          RDF::Literal.new(o.to_s, language: :en)
        end
  end

  triple = RDF::Statement(s, p, o)
  repo.insert(triple)

  true
end