Class: RoadForest::SourceRigor::Parcel

Inherits:
Object
  • Object
show all
Includes:
Graph::Normalization
Defined in:
lib/roadforest/source-rigor/parcel.rb

Constant Summary

Constants included from Graph::Normalization

Graph::Normalization::Vocabs

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Graph::Normalization

#expand_curie, #expand_curie_pair, #interned_uri, #literal, #normalize_context, #normalize_property, #normalize_resource, #normalize_statement, #normalize_term, #normalize_tuple, #normalize_uri, #relevant_prefixes_for_graph, #root_url, #uri, #vocabularies_in_graph

Instance Attribute Details

#graph ⇒ Object

Returns the value of attribute graph.



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# File 'lib/roadforest/source-rigor/parcel.rb', line 8

def graph
  @graph
end

Instance Method Details

#graph_for(resource) ⇒ Object 



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# File 'lib/roadforest/source-rigor/parcel.rb', line 26

def graph_for(resource)
  new_graph = RDF::Graph.new
  subjects = {}
  subjects_for_resource(resource).each do |subject|
    subjects[subject] ||= :open
  end

  until (open_subjects = subjects.keys.find_all{|subject| subjects[subject] == :open }).empty?
    open_subjects.each do |subject|
      subjects[subject] = :closed
      graph.query(:subject => subject) do |statement|
        if RDF::Node === statement.object
          subjects[statement.object] ||= :open
        end
        new_graph << statement
      end
    end
  end
  new_graph
end

#resources ⇒ Object 



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# File 'lib/roadforest/source-rigor/parcel.rb', line 10

def resources
  resource_hash = {}
  graph.each_subject do |subject|
    next unless RDF::URI === subject
    resource_hash[normalize_context(subject)] = true
  end
  resource_hash.keys
end

#subjects_for_resource(resource) ⇒ Object 



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# File 'lib/roadforest/source-rigor/parcel.rb', line 19

def subjects_for_resource(resource)
  resource = normalize_context(resource)
  graph.each_subject.find_all do |subject|
    normalize_context(subject) == resource
  end
end