Class: CqlMeasure

Inherits:
Object
  • Object
show all
Includes:
Mongoid::Attributes::Dynamic, Mongoid::Document, Mongoid::Timestamps
Defined in:
lib/models/cql_measure.rb

Constant Summary collapse

DEFAULT_EFFECTIVE_DATE = 
Time.gm(2012,12,31,23,59).to_i
MP_START_DATE = 
Time.gm(2012,1,1,0,0).to_i
TYPES = 
["ep", "eh"]

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.for_patient(record) ⇒ Object

Find the measures matching a patient



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# File 'lib/models/cql_measure.rb', line 64

def self.for_patient(record)
  where user_id: record.user_id, hqmf_set_id: { '$in' => record.measure_ids }
end

Instance Method Details

#all_data_criteria ⇒ Object 



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# File 'lib/models/cql_measure.rb', line 112

def all_data_criteria
  as_hqmf_model.all_data_criteria
end

#as_hqmf_model ⇒ Object

Returns the hqmf-parser’s ruby implementation of an HQMF document. Rebuild from population_criteria, data_criteria, and measure_period JSON



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# File 'lib/models/cql_measure.rb', line 93

def as_hqmf_model
  json = {
    "id" => self.measure_id,
    "title" => self.title,
    "description" => self.description,
    "population_criteria" => self.population_criteria,
    "data_criteria" => self.data_criteria,
    "source_data_criteria" => self.source_data_criteria,
    "measure_period" => self.measure_period,
    "attributes" => self.measure_attributes,
    "populations" => self.populations,
    "hqmf_id" => self.hqmf_id,
    "hqmf_set_id" => self.hqmf_set_id,
    "hqmf_version_number" => self.hqmf_version_number,
    "cms_id" => self.cms_id
  }
  HQMF::Document.from_json(json)
end

#calculate_complexity ⇒ Object 



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# File 'lib/models/cql_measure.rb', line 131

def calculate_complexity
  # We calculate the complexity for each statement, and (at least for now) store the result in the same way
  # we store the complexity for QDM variables
  # TODO: consider whether this is too much of a force fit
  self.complexity = { variables: [] }
  # Recursively look through an expression to count the logical branches
  def count_expression_logical_branches(expression)
    case expression
    when nil
      0
    when Array
      expression.map { |exp| count_expression_logical_branches(exp) }.sum
    when Hash
      case expression['type']
      when 'And', 'Or', 'Not'
        count_expression_logical_branches(expression['operand'])
      when 'Query'
        # TODO: Do we need to look into the source side of the query? Can there be logical operators there?
        count_expression_logical_branches(expression['where']) + count_expression_logical_branches(expression['relationship'])
      else
        1
      end
    else
      0
    end
  end

  # Determine the complexity of each statement
  self.elm.each do |elm|
    if statements = elm.try(:[], 'library').try(:[], 'statements').try(:[], 'def')
      statements.each do |statement|
        self.complexity[:variables] << { name: statement['name'], complexity: count_expression_logical_branches(statement['expression']) }
      end
    end
  end
  self.complexity
end

#count_expression_logical_branches(expression) ⇒ Object

Recursively look through an expression to count the logical branches



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# File 'lib/models/cql_measure.rb', line 137

def count_expression_logical_branches(expression)
  case expression
  when nil
    0
  when Array
    expression.map { |exp| count_expression_logical_branches(exp) }.sum
  when Hash
    case expression['type']
    when 'And', 'Or', 'Not'
      count_expression_logical_branches(expression['operand'])
    when 'Query'
      # TODO: Do we need to look into the source side of the query? Can there be logical operators there?
      count_expression_logical_branches(expression['where']) + count_expression_logical_branches(expression['relationship'])
    else
      1
    end
  else
    0
  end
end

#set_continuous_variable ⇒ Object 



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# File 'lib/models/cql_measure.rb', line 118

def set_continuous_variable
  # The return value of this function is not related to whether or not this
  # measure is a CV measure. The true return value ensures false is not
  # accidentally returned here, which would cause the chain of 'before_*' to
  # stop executing.
  self.continuous_variable = populations.map {|x| x.keys}.flatten.uniq.include? HQMF::PopulationCriteria::MSRPOPL
  true
end

#value_sets ⇒ Object 



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# File 'lib/models/cql_measure.rb', line 68

def value_sets
  options = { oid: value_set_oids }
  options[:user_id] = user.id if user?
  @value_sets ||= HealthDataStandards::SVS::ValueSet.in(options)
  @value_sets
end

#value_sets_by_oid ⇒ Object 



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# File 'lib/models/cql_measure.rb', line 75

def value_sets_by_oid
  @value_sets_by_oid = {}
  value_sets.each do |vs|
    if @value_sets_by_oid[vs.oid]
      # If there are multiple value sets with the same oid for the user, then keep the one with
      # the version corresponding to this measure.
      if vs.version.include?(hqmf_set_id)
        @value_sets_by_oid[vs.oid] = { vs.version => vs }
      end
    else
      @value_sets_by_oid[vs.oid] = { vs.version => vs }
    end
  end
  @value_sets_by_oid
end