Class: FHIR::Boot::Preprocess

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

Class Method Summary collapse

Class Method Details

.pre_process_bundle(filename) ⇒ Object 



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# File 'lib/bootstrap/preprocess.rb', line 5

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|
    ['StructureDefinition','ValueSet','CodeSystem','SearchParameter'].include? entry['resource']['resourceType']
  end

  # Remove unnecessary elements from the hash
  hash['entry'].each do |entry|
    if 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
  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/bootstrap/preprocess.rb', line 79

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

  if(hash['concept'])
    hash['concept'].each do |concept|
      pre_process_codesystem_concept(concept)
    end
  end
end

.pre_process_codesystem_concept(hash) ⇒ Object 



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# File 'lib/bootstrap/preprocess.rb', line 90

def self.pre_process_codesystem_concept(hash)
  ['extension','definition','designation'].each{|key| hash.delete(key) }
  if hash['concept']
    hash['concept'].each do |concept|
      pre_process_codesystem_concept(concept)
    end
  end
end

.pre_process_schema(filename) ⇒ Object 



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# File 'lib/bootstrap/preprocess.rb', line 120

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{ |e| e.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/bootstrap/preprocess.rb', line 99

def self.pre_process_searchparam(hash)
  # Remove large HTML narratives and unused content
  ['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/bootstrap/preprocess.rb', line 36

def self.pre_process_structuredefinition(hash)
  # Remove large HTML narratives and unused content
  ['text','publisher','contact','description','requirements','mapping'].each{|key| hash.delete(key) }
  
  # Remove unused descriptions within the snapshot elements
  if(hash['snapshot'])
    hash['snapshot']['element'].each do |element|
      ['short','definition','comments','requirements','alias','mapping'].each{|key| element.delete(key) }
    end
  end
  # Remove unused descriptions within the differential elements
  if(hash['differential'])
    hash['differential']['element'].each do |element|
      ['short','definition','comments','requirements','alias','mapping'].each{|key| element.delete(key) }
    end
  end
end

.pre_process_valueset(hash) ⇒ Object 



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# File 'lib/bootstrap/preprocess.rb', line 54

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

  if(hash['compose'] && hash['compose']['include'])
    hash['compose']['include'].each do |element|
      if(element['concept'])
        element['concept'].each do |concept|
          concept.delete('designation')
        end 
      end
    end
  end

  if(hash['compose'] && hash['compose']['exclude'])
    hash['compose']['exclude'].each do |element|
      if(element['concept'])
        element['concept'].each do |concept|
          concept.delete('designation')
        end 
      end
    end
  end
end

.remove_fhir_comments(hash) ⇒ Object 



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# File 'lib/bootstrap/preprocess.rb', line 104

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