Class: Briskly::Store

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(key) ⇒ Store

Returns a new instance of Store.


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# File 'lib/briskly/store.rb', line 9

def initialize(key)
  @key      = key
  @store    = Trie.new
  @elements = {}
end

Instance Attribute Details

#key ⇒ Object (readonly)

Returns the value of attribute key.


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# File 'lib/briskly/store.rb', line 7

def key
  @key
end

Instance Method Details

#search(keyword, options = {}) ⇒ Object 


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# File 'lib/briskly/store.rb', line 44

def search(keyword, options = {})
  keyword = Briskly::Keyword.new(keyword)

  result  = @store.children_with_values(keyword.normalised)
                  .map(&:last)
                  .flatten(1)
                  .sort{ |a, b| a[1] <=> b[1] }

  
  limit   = options.fetch(:limit, result.length)
  counter = 0
  output  = []
  related = []


  # If n elements have the same index that
  # means they are related. Trie will give
  # the best keyword match on it's first
  # position so we should ignore the others
  #
  # `related` keeps the list of related keywords
  result.each do |element|
    next if related[element[1]] 
    related[element[1]] = true

    output << element[0]

    counter += 1
    break if counter == limit
  end
  
  output
end

#with(values) ⇒ Object 


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# File 'lib/briskly/store.rb', line 15

def with(values)
  @store    = Trie.new
  @elements = {}

  values.each_with_index do |value, index|

    keywords = Array.new(1) { value[:keyword] }.flatten(1)

    keywords.each do |keyword|
      alternatives = keywords - [ keyword ]
      element      = Briskly::Element.new(keyword, value[:data], alternatives)
      normalised   = element.keyword(:internal).normalised

      # We need to make sure we keep the index
      # and in order to avoid loops always order
      # the array after each insertion
      @elements[normalised] ||= []
      @elements[normalised].push([element, index])
                           .sort! { |a,b| a[1] <=> b[1] }
    end

  end


  @elements.each do |key, values|
    @store.add key, values
  end
end