From: "christophe.poucet@..." <christophe.poucet@...>
Date: 2005-09-25T02:11:41+09:00
Subject: Concerning Marshalling

Hello,

I was trying to marshal some objects, however some of these objects
contain references to singletons which of course can't be marshalled.
That's why I tried something as follows:

class Container
end

class SpecialContainer < Container
  include Singleton
end

class Test
  attr_accessor :container
  def _dump(depth)
    old = @container
    if old == SpecialContainer.instance
      @container = nil
    end
    result = super
    @container = old
    return result
  end
  def self._load(str)
    super
    if @container == nil
      @container = SpecialContainer.instance
    end
    self
  end
end

Sadly, however, it seems there is no default implementation for _dump,
which means that in this case the super call results in a
NoMethodError.  Is there any other way to resolve this problem without
custom-coding a full _dump method?

Regards,
Christophe