Class: Ferret::Search::Spans::SpanTermQuery::SpanTermEnum

Inherits:
Ferret::Search::Spans::SpansEnum show all
Defined in:
lib/ferret/search/spans/span_term_query.rb

Instance Method Summary collapse

Constructor Details

#initialize(query, reader) ⇒ SpanTermEnum

Returns a new instance of SpanTermEnum.



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# File 'lib/ferret/search/spans/span_term_query.rb', line 41

def initialize(query, reader) 
  @query = query
  @positions = reader.term_positions_for(@query.term)
  @position = -1
  @doc = -1
  @count = 0
  @freq = 0
end

Instance Method Details

#doc ⇒ Object 



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# File 'lib/ferret/search/spans/span_term_query.rb', line 86

def doc() @doc end

#finish ⇒ Object 



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# File 'lib/ferret/search/spans/span_term_query.rb', line 88

def finish() @position + 1 end

#next? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ferret/search/spans/span_term_query.rb', line 50

def next?
  if (@count == @freq) 
    if not @positions.next?
      @doc = Ferret::Search::Scorer::MAX_DOCS
      return false
    end
    @doc = @positions.doc()
    @freq = @positions.freq()
    @count = 0
  end
  @position = @positions.next_position()
  @count += 1
  return true
end

#skip_to(target) ⇒ Object 



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# File 'lib/ferret/search/spans/span_term_query.rb', line 65

def skip_to(target)
  # are we already at the correct position?
  if (@doc >= target) 
    return true
  end

  if not @positions.skip_to(target)
    @doc = Ferret::Search::Scorer::MAX_DOCS
    return false
  end

  @doc = @positions.doc()
  @freq = @positions.freq()
  @count = 0

  @position = @positions.next_position()
  @count += 1

  return true
end

#start ⇒ Object 



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# File 'lib/ferret/search/spans/span_term_query.rb', line 87

def start() @position end

#to_s ⇒ Object 



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# File 'lib/ferret/search/spans/span_term_query.rb', line 90

def to_s() 
  buffer = "spans(#{@query})@"
  if @doc < 0
    buffer << "START"
  else
    if @doc == Ferret::Search::Scorer::MAX_DOCS
      buffer << "END"
    else
      buffer << "#{@doc}-#{@position}"
    end
  end
  return buffer
end