Class: Ferret::Search::Spans::NearSpansEnum::SpansCell

Inherits:
SpansEnum
  • Object
show all
Defined in:
lib/ferret/search/spans/near_spans_enum.rb

Overview

Wraps a SpansEnum, and can be used to form a linked list.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent, spans, index) ⇒ SpansCell

Returns a new instance of SpansCell.



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# File 'lib/ferret/search/spans/near_spans_enum.rb', line 27

def initialize(parent, spans, index) 
  @parent = parent
  @spans = spans
  @index = index
  @length = -1
end

Instance Attribute Details

#index ⇒ Object

Returns the value of attribute index.



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# File 'lib/ferret/search/spans/near_spans_enum.rb', line 25

def index
  @index
end

#next ⇒ Object

Returns the value of attribute next.



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# File 'lib/ferret/search/spans/near_spans_enum.rb', line 25

def next
  @next
end

Instance Method Details

#doc ⇒ Object 



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# File 'lib/ferret/search/spans/near_spans_enum.rb', line 74

def doc() return @spans.doc() end

#finish ⇒ Object 



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# File 'lib/ferret/search/spans/near_spans_enum.rb', line 76

def finish() return @spans.finish() end

#next? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ferret/search/spans/near_spans_enum.rb', line 34

def next?()
  if (@length != -1)                  # subtract old length

    @parent.total_length -= @length
  end

  more = @spans.next?                 # move to next


  if more 
    @length = finish() - start()      # compute new length

    @parent.total_length += @length   # add new length to total


    if (@parent.max.nil? or doc() > @parent.max.doc or     # maintain max

        (doc() == @parent.max.doc and finish() > @parent.max.finish))
      @parent.max = self
    end
  end

  return more
end

#skip_to(target) ⇒ Object 



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# File 'lib/ferret/search/spans/near_spans_enum.rb', line 54

def skip_to(target)
  if (@length != -1)                  # subtract old length

    @parent.total_length -= @length
  end

  more = @spans.skip_to(target)       # skip


  if (more) 
    @length = finish() - start()      # compute new length

    @parent.total_length += @length   # add new length to total


    if (@parent.max == nil or doc() > @parent.max.doc() or   # maintain max

        (doc() == @parent.max.doc and finish() > @parent.max.finish))
      @parent.max = self
    end
  end

  return more
end

#start ⇒ Object 



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# File 'lib/ferret/search/spans/near_spans_enum.rb', line 75

def start() return @spans.start() end

#to_s ⇒ Object 



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# File 'lib/ferret/search/spans/near_spans_enum.rb', line 78

def to_s() return "#{@spans}##{@index}" end