Module: RDF::RDFObjects::Graph

Included in:
Graph
Defined in:
lib/rdf/rdfobjects/graph.rb

Instance Method Summary collapse

Instance Method Details

#<<(data) ⇒ Object 



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# File 'lib/rdf/rdfobjects/graph.rb', line 25

def <<(data)
  case data
  when RDF::RDFObjects::Resource
    data.statements.each do |stmt|
      self.insert(stmt)
    end
  else
    super(data)
  end
end

#[](id) ⇒ Object 



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# File 'lib/rdf/rdfobjects/graph.rb', line 9

def [](id)
  id = RDF::Resource.new(id) unless id.is_a?(Resource)
  r = self.first_subject(:subject=>id)
  r = self.first_object(:object=>id) unless r
  r.graph = self if r
  r
end

#create(*args, &block) ⇒ Object 



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# File 'lib/rdf/rdfobjects/graph.rb', line 3

def create(*args, &block)      
  r = RDF::Resource.new(args.shift, *args, &block)
  r.graph = self
  r
end

#insert_statement(statement) ⇒ Object 



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# File 'lib/rdf/rdfobjects/graph.rb', line 36

def insert_statement(statement)
  statement = statement.dup
  statement.context = context
  statement.each_triple.each do |s,p,o|
    puts s.to_s
    s.graph = self if s.is_a?(RDF::Resource)
  end      
  @data.insert(statement)
end

#to_ntriples ⇒ Object 



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# File 'lib/rdf/rdfobjects/graph.rb', line 17

def to_ntriples
  RDF::Writer.for(:ntriples).buffer do |writer|
    self.each_statement do |statement|
      writer << statement
    end
  end
end