Class: Ferret::Search::ExactPhraseScorer

Inherits:
PhraseScorer show all
Defined in:
lib/ferret/search/exact_phrase_scorer.rb

Constant Summary

Constants inherited from Scorer

Scorer::MAX_DOCS

Instance Attribute Summary

Attributes inherited from Scorer

#similarity

Instance Method Summary collapse

Methods inherited from PhraseScorer

#do_next, #doc, #each, #explain, #first_to_last, #init, #next?, #pq_to_list, #score, #skip_to, #sort, #to_s

Methods inherited from Scorer

#doc, #each_hit, #each_hit_up_to, #explain, #next?, #score, #skip_to

Constructor Details

#initialize(weight, tps, positions, similarity, norms) ⇒ ExactPhraseScorer

Returns a new instance of ExactPhraseScorer.



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# File 'lib/ferret/search/exact_phrase_scorer.rb', line 4

def initialize(weight, tps, positions, similarity, norms) 
  super(weight, tps, positions, similarity, norms)
end

Instance Method Details

#phrase_freq ⇒ Object 



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# File 'lib/ferret/search/exact_phrase_scorer.rb', line 8

def phrase_freq()
  # sort list with pq
  each do |pp|
    pp.first_position()
    @pq.push(pp)         # build pq from list
  end
  pq_to_list()           # rebuild list from pq

  freq = 0
  begin # find position w/ all terms
    while (@first.position < @last.position) # scan forward in first
      begin
        if not @first.next_position()
          return freq
        end
      end while (@first.position < @last.position)
      first_to_last()
    end
    freq += 1            # all equal: a match
  end while @last.next_position()

  return freq
end