From: holy sinner <ifxa3a@...>
Date: 2006-04-11T00:23:03+09:00
Subject: do i have to use DRbUndumped?

i am currently using Ruby 1.8.4 and DRb 2.0.4, and i am stuck with some marshalling problem
related to tuplespace. this is my hello world code using tuplespace

---
#HelloWorld.rb
require "rinda/ring"

class HelloWorld
#	include DRbUndumped
	def initialize(str)
		@str = str
	end
	def _dump(dumpDepth)
		@str
	end
	def HelloWorld._load(srcString)
		HelloWorld.new(srcString)
	end
	def to_s
		@str
	end
end

DRb.start_service

ringServer = Rinda::RingFinger.primary
tupleSpace = ringServer.read([:name, :TupleSpace, nil, nil])[2]
tupleSpace = Rinda::TupleSpaceProxy.new tupleSpace

tupleSpace.write(["helloWorldObject", HelloWorld.new("Hello World!")])

aHelloWorldObject = tupleSpace.take(["helloWorldObject", nil])
puts aHelloWorldObject[1]

#DRb.thread.join

---

my problem is that _dump doesn't work, because the HelloWorld object gets converted into
DRb::DRbUnknown, which can not be converted into tuple to be inserted into the tuplespace. it does
not occur if i use DRb::DRbUndumped, but i think using DRb::DRbUndumped is rather unsecure if i
try using read instead of take to get the object out of the tuplespace. the question is:
 - what's wrong with my _dump (and _load) ? do i have to use DRb::DRbUndumped ?
 - do i have to use Rinda::Ring to work with Rinda::TupleSpace ?

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