storage/mroonga/vendor/groonga/lib/mrb/scripts/expression_tree/variable.rb


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module Groonga
  module ExpressionTree
    class Variable
      attr_reader :column
      def initialize(column)
        @column = column
      end

      def build(expression)
        expression.append_object(@column, Operator::GET_VALUE, 1)
      end

      def estimate_size(table)
        table.size
      end
    end
  end
end