Class: Linkage::ScoreRecorder

Inherits:
Object
  • Object
show all
Defined in:
lib/linkage/score_recorder.rb

Overview

ScoreRecorder is responsible for observing a set of Comparator for changes and saving matches to a ScoreSet via Linkage::ScoreSet#add_score.

Instance Method Summary collapse

Constructor Details

#initialize(comparators, score_set, primary_keys) ⇒ ScoreRecorder

Returns a new instance of ScoreRecorder.

Parameters:



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# File 'lib/linkage/score_recorder.rb', line 8

def initialize(comparators, score_set, primary_keys)
  @comparators = comparators
  @score_set = score_set
  @primary_keys = primary_keys
end

Instance Method Details

#start ⇒ Object 



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# File 'lib/linkage/score_recorder.rb', line 14

def start
  @comparators.each do |comparator|
    comparator.add_observer(self)
  end
  @score_set.open_for_writing
end

#stop ⇒ Object 



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# File 'lib/linkage/score_recorder.rb', line 28

def stop
  @score_set.close
  @comparators.each do |comparator|
    comparator.delete_observer(self)
  end
end

#update(comparator, record_1, record_2, score) ⇒ Object 



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# File 'lib/linkage/score_recorder.rb', line 21

def update(comparator, record_1, record_2, score)
  index = @comparators.index(comparator)
  primary_key_1 = record_1[@primary_keys[0]]
  primary_key_2 = record_2[@primary_keys[1]]
  @score_set.add_score(index + 1, primary_key_1, primary_key_2, score)
end