Class: FHIR::STU3::Boot::Preprocess

Inherits:
Object
  • Object
show all
Defined in:
lib/fhir_stu3_models/bootstrap/preprocess.rb

Class Method Summary collapse

Class Method Details

.pre_process_bundle(filename) ⇒ Object 



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# File 'lib/fhir_stu3_models/bootstrap/preprocess.rb', line 6

def self.pre_process_bundle(filename)
  # Read the file
  puts "Processing #{File.basename(filename)}..."
  start = File.size(filename)
  json = File.open(filename, 'r:UTF-8', &:read)
  hash = JSON.parse(json)

  # Remove entries that do not interest us: CompartmentDefinitions, OperationDefinitions, Conformance statements
  hash['entry'].select! do |entry|
    %w[StructureDefinition ValueSet CodeSystem SearchParameter].include? entry['resource']['resourceType']
  end

  # Remove unnecessary elements from the hash
  hash['entry'].each do |entry|
    next unless entry['resource']
    pre_process_structuredefinition(entry['resource']) if 'StructureDefinition' == entry['resource']['resourceType']
    pre_process_valueset(entry['resource']) if 'ValueSet' == entry['resource']['resourceType']
    pre_process_codesystem(entry['resource']) if 'CodeSystem' == entry['resource']['resourceType']
    pre_process_searchparam(entry['resource']) if 'SearchParameter' == entry['resource']['resourceType']
    remove_fhir_comments(entry['resource'])
  end

  # Output the post processed file
  f = File.open(filename, 'w:UTF-8')
  f.write(JSON.pretty_unparse(hash))
  f.close
  finish = File.size(filename)
  puts "  Removed #{(start - finish) / 1024} KB" if start != finish
end

.pre_process_codesystem(hash) ⇒ Object 



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# File 'lib/fhir_stu3_models/bootstrap/preprocess.rb', line 65

def self.pre_process_codesystem(hash)
  # Remove large HTML narratives and unused content
  %w[meta text publisher contact description requirements].each { |key| hash.delete(key) }
  return unless hash['concept']
  hash['concept'].each do |concept|
    pre_process_codesystem_concept(concept)
  end
end

.pre_process_codesystem_concept(hash) ⇒ Object 



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# File 'lib/fhir_stu3_models/bootstrap/preprocess.rb', line 74

def self.pre_process_codesystem_concept(hash)
  %w[extension definition designation].each { |key| hash.delete(key) }
  return unless hash['concept']
  hash['concept'].each do |concept|
    pre_process_codesystem_concept(concept)
  end
end

.pre_process_schema(filename) ⇒ Object 



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# File 'lib/fhir_stu3_models/bootstrap/preprocess.rb', line 103

def self.pre_process_schema(filename)
  # Read the file
  puts "Processing #{File.basename(filename)}..."
  start = File.size(filename)
  raw = File.open(filename, 'r:UTF-8', &:read)

  # Remove annotations
  doc = Nokogiri::XML(raw)
  doc.root.add_namespace_definition('xs', 'http://www.w3.org/2001/XMLSchema')
  doc.search('//xs:annotation').each(&:remove)

  # Output the post processed file
  f = File.open(filename, 'w:UTF-8')
  f.write(doc.to_xml)
  f.close
  finish = File.size(filename)
  puts "  Removed #{(start - finish) / 1024} KB" if start != finish
end

.pre_process_searchparam(hash) ⇒ Object 



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# File 'lib/fhir_stu3_models/bootstrap/preprocess.rb', line 82

def self.pre_process_searchparam(hash)
  # Remove large HTML narratives and unused content
  %w[id url name date publisher contact description xpathUsage].each { |key| hash.delete(key) }
end

.pre_process_structuredefinition(hash) ⇒ Object 



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# File 'lib/fhir_stu3_models/bootstrap/preprocess.rb', line 36

def self.pre_process_structuredefinition(hash)
  # Remove large HTML narratives and unused content
  %w[text publisher contact description requirements mapping].each { |key| hash.delete(key) }

  # Remove unused descriptions within the snapshot and differential elements
  %w[snapshot differential].each do |key|
    next unless hash[key]
    hash[key]['element'].each do |element|
      %w[short definition comments requirements alias mapping].each { |subkey| element.delete(subkey) }
    end
  end
end

.pre_process_valueset(hash) ⇒ Object 



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# File 'lib/fhir_stu3_models/bootstrap/preprocess.rb', line 49

def self.pre_process_valueset(hash)
  # Remove large HTML narratives and unused content
  %w[meta text publisher contact description requirements].each { |key| hash.delete(key) }

  return unless hash['compose']
  %w[include exclude].each do |key|
    next unless hash['compose'][key]
    hash['compose'][key].each do |element|
      next unless element['concept']
      element['concept'].each do |concept|
        concept.delete('designation')
      end
    end
  end
end

.remove_fhir_comments(hash) ⇒ Object 



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# File 'lib/fhir_stu3_models/bootstrap/preprocess.rb', line 87

def self.remove_fhir_comments(hash)
  hash.delete('fhir_comments')
  hash.each do |_key, value|
    if value.is_a?(Hash)
      remove_fhir_comments(value)
    elsif value.is_a?(Array)
      value.each do |v|
        remove_fhir_comments(v) if v.is_a?(Hash)
      end
    end
  end
  hash.keep_if do |_key, value|
    !value.is_a?(Hash) || !value.empty?
  end
end