module Moneta
  module Adapters
    # Null backend which doesn't store anything
    # @api public
    class Null
      include Defaults

      # @param [Hash] options Options hash
      def initialize(options = {})
      end

      # (see Proxy#key?)
      def key?(key, options = {})
        false
      end

      # (see Proxy#load)
      def load(key, options = {})
        nil
      end

      # (see Proxy#store)
      def store(key, value, options = {})
        value
      end

      # (see Proxy#delete)
      def delete(key, options = {})
        nil
      end

      # (see Proxy#clear)
      def clear(options = {})
        self
      end
    end
  end
end