Class: Sastrawi::Stemmer::CachedStemmer

Inherits:
Object
  • Object
show all
Defined in:
lib/sastrawi/stemmer/cached_stemmer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cache, delegated_stemmer) ⇒ CachedStemmer

Returns a new instance of CachedStemmer.



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# File 'lib/sastrawi/stemmer/cached_stemmer.rb', line 8

def initialize(cache, delegated_stemmer)
  @cache = cache
  @delegated_stemmer = delegated_stemmer
end

Instance Attribute Details

#cache ⇒ Object (readonly)

Returns the value of attribute cache.



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# File 'lib/sastrawi/stemmer/cached_stemmer.rb', line 6

def cache
  @cache
end

#delegated_stemmer ⇒ Object (readonly)

Returns the value of attribute delegated_stemmer.



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# File 'lib/sastrawi/stemmer/cached_stemmer.rb', line 6

def delegated_stemmer
  @delegated_stemmer
end

Instance Method Details

#stem(text) ⇒ Object 



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# File 'lib/sastrawi/stemmer/cached_stemmer.rb', line 13

def stem(text)
  normalized_text = Sastrawi::Stemmer::Filter::TextNormalizer.normalize_text(text)

  words = normalized_text.split(' ')
  stems = []

  words.each do |word|
    if @cache.has?(word)
      stems.push(@cache.get(word))
    else
      stem = @delegated_stemmer.stem(word)
      @cache.set(word, stem)
      stems.push(stem)
    end
  end

  stems.join(' ')
end