Class: Rasam::PairRank

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ PairRank

Returns a new instance of PairRank.



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# File 'lib/rasam.rb', line 26

def initialize(options)
  @decisions = []
  @votes = Hash.new(0)
  @combinations = options.combination(2).to_a
end

Instance Attribute Details

#combinations ⇒ Object (readonly)

Returns the value of attribute combinations.



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# File 'lib/rasam.rb', line 24

def combinations
  @combinations
end

#decisions ⇒ Object (readonly)

Returns the value of attribute decisions.



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# File 'lib/rasam.rb', line 24

def decisions
  @decisions
end

Instance Method Details

#break_tie(pair, choice, criteria) ⇒ Object 



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# File 'lib/rasam.rb', line 65

def break_tie(pair, choice, criteria)
  make_rational_choice(pair, choice, criteria)
end

#make(rational_choice) ⇒ Object 



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# File 'lib/rasam.rb', line 32

def make(rational_choice)
  @decisions << rational_choice
  @votes[rational_choice.choice] += 1
end

#make_rational_choice(pair, choice, criteria) ⇒ Object 



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# File 'lib/rasam.rb', line 69

def make_rational_choice(pair, choice, criteria)
  rc = RationalChoice.new(pair, choice, criteria)
  make(rc)
end

#pair_for(choice) ⇒ Object 



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# File 'lib/rasam.rb', line 46

def pair_for(choice)
  decision = @decisions.find{|x| x.choice == choice}
  decision.pair      
end

#rationale_for(choice) ⇒ Object 



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# File 'lib/rasam.rb', line 41

def rationale_for(choice)
  decision = @decisions.find{|x| x.choice == choice}
  decision.criteria
end

#score_for(choice) ⇒ Object 



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# File 'lib/rasam.rb', line 37

def score_for(choice)
  @votes[choice]
end

#tied_pair ⇒ Object 



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# File 'lib/rasam.rb', line 51

def tied_pair
  result = []
  @combinations.each do |combination|
    first = score_for(combination[0])
    second = score_for(combination[1])
    
    if tie(first, second)
      result = combination
      break
    end
  end
  result
end