Class: OMF::SFA::Model::Ontology

Inherits:
Base::LObject
  • Object
show all
Defined in:
lib/omf-sfa/model/ontology.rb

Constant Summary collapse

LOCAL_PREFIX =

URL prefix which we serve from local directory

'http://geni-orca.renci.org/owl/'
LOCAL_DIR = 
"#{File.dirname(__FILE__)}/../../../owl/"
@@uri2inst = 
{}

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(uri, is_file = false) ⇒ Ontology

Returns a new instance of Ontology.



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# File 'lib/omf-sfa/model/ontology.rb', line 59

def initialize(uri, is_file = false)
  @uri = uri
  if is_file
    f = File.open(uri)
    @doc = Nokogiri::XML(f) do |config|
      config.strict.noent.noblanks
    end
    f.close
  else
    raise "don't know how to import '#{uri}'"          
  end
  
  parse()
end

Class Method Details

.import(uri) ⇒ Object 



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# File 'lib/omf-sfa/model/ontology.rb', line 42

def self.import(uri)
  unless onto = @@uri2inst[uri]
    info "Loading ontology '#{uri}'"
    if uri.kind_of?(String) && uri.start_with?(LOCAL_PREFIX)
      file_name = uri.gsub(LOCAL_PREFIX, LOCAL_DIR)
      begin
        onto = @@uri2inst[uri] = self.new(file_name, true)
      rescue Errno::ENOENT
        puts ">>>> Unknown ontology '#{uri}'"
      end
    else
      raise "don't know how to import '#{uri}'"
    end
  end
  onto
end

Instance Method Details

#parse ⇒ Object 



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# File 'lib/omf-sfa/model/ontology.rb', line 74

def parse()
  def_ns = @doc.namespaces["xmlns"]
  
  @doc.root.children.each do |el|
    case el.node_name
    when 'Ontology'
      parse_onotology(el)
    when 'Class'
      ModelClassDescription.create_from_xml(el)
    when 'comment'
      # ignore
    when 'ObjectProperty'
      ModelObjectPropertyDescription.create_from_xml(el)
    when 'DatatypeProperty'
      ModelDataPropertyDescription.create_from_xml(el)
    when 'AnnotationProperty'
      # ignore
    else
      warn "Unknown element '#{el.node_name}' in '#{@uri}'"
    end
  end


  # @doc.xpath('//owl:Class', 'owl' => OWL_NS).each do |cel|
    # debug ModelClassDescription.create_from_xml(cel)
    # #debug c.attribute_with_ns('about', RDF_NS)
    # #debug c.namespaces["xmlns"].inspect #def_ns
    # #debug c.inspect
    # #exit
  # end
end