Class: BEL::BELRDF::TermConverter

Inherits:
Object
  • Object
show all
Includes:
RDFConverter, BELParser::Language::Version2_0::Functions, BELParser::Quoting
Defined in:
lib/bel/translator/plugins/rdf2/term_converter.rb

Instance Method Summary collapse

Methods included from RDFConverter

#s

Constructor Details

#initialize(parameter_converter) ⇒ TermConverter

Returns a new instance of TermConverter.



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# File 'lib/bel/translator/plugins/rdf2/term_converter.rb', line 14

def initialize(parameter_converter)
  @parameter_converter = parameter_converter
end

Instance Method Details

#convert(term) ⇒ RDF::Graph

Convert a BELParser::Expression::Model::Term to RDF::Graph of RDF statements.

Parameters:

  • term (BELParser::Expression::Model::Term)

Returns:

  • (RDF::Graph) —

    graph of RDF statements representing the term



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# File 'lib/bel/translator/plugins/rdf2/term_converter.rb', line 23

def convert(term)
  path_part     = to_path_part(term)
  term_uri      = to_uri(path_part)
  tg            = RDF::Graph.new
  tg           << s(term_uri, RDF.type, BELV2_0.Term)

  term_class = FUNCTION_HASH[term.function]
  if term_class
    tg << s(term_uri, RDF.type, term_class)
  end

  term.arguments.each do |arg|
    case arg
    when BELParser::Expression::Model::Parameter
      param_uri, paramg = @parameter_converter.convert(arg)
      if param_uri
        tg << paramg
        tg << s(term_uri, BELV2_0.hasConcept, param_uri)
      end
    when BELParser::Expression::Model::Term
      if FUNCTION_HASH.key?(arg.function)
        path_part, iterm_uri, itermg = convert(arg)
        tg << itermg
        tg << s(term_uri, BELV2_0.hasChild, iterm_uri)
      end
      handle_special_inner(term, term_uri, arg, tg)
    end
  end

  [path_part, term_uri, tg]
end