Method: Moped::Protocol::Message::ClassMethods#int64

Defined in:
lib/moped/protocol/message.rb

#int64(name, options = {}) ⇒ Object

Declare a 64 bit signed integer field.

Examples:

class Query < Message
  int64 :cursor_id
end

with array type

class KillCursors < Message
  int64 :cursor_ids, type: :array
end

Parameters:

  • name (String) —

    the name of this field

  • options (Hash) (defaults to: {}) —

    the options for this field

Options Hash (options):

  • :type (:array) —

    specify an array of 64 bit ints



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# File 'lib/moped/protocol/message.rb', line 273

def int64(name, options = {})
  attr_writer name

  if options[:type] == :array
    class_eval <<-RUBY, __FILE__, __LINE__ + 1
      def #{name}
        @#{name} ||= []
      end

      def serialize_#{name}(buffer)
        buffer << #{name}.pack('q<*')
      end

      def deserialize_#{name}(buffer)
        raise NotImplementedError
      end
    RUBY
  else
    class_eval <<-RUBY, __FILE__, __LINE__ + 1
      def #{name}
        @#{name} ||= 0
      end

      def serialize_#{name}(buffer)
        buffer << [#{name}].pack('q<')
      end

      def deserialize_#{name}(buffer)
        self.#{name}, = buffer.read(8).unpack('q<')
      end
    RUBY
  end

  fields << name
end