From: "NAKAMURA, Hiroshi" <nahi@...>
Date: 2001-12-20T10:55:06+09:00
Subject: [ruby-talk:29048] Re: Best way to do XML-RPC

Hi Sean,

Although you don't like SOAP, SOAP4R will support REXML based parsing.
I heavyly am looking forward to see maki's SAX2 to be released...

> From: Sean Russell [mailto:ser@germane-software.com]
> Sent: Wednesday, December 19, 2001 11:46 PM

> Personally, I don't like SOAP.  I believe the standard is overly complex.  

Definitely.  No namespace, no user type information and no
multi-ref data in XML-RPC is for simplicity.  It is PROS of
XML-RPC, not CONS.  It contributes to interoperability and
processing speed.

I have once chosen XML-RPC in a project.  Clients who use
my(our) service had broad experience in the domain it treats.
No namespace and no user type information would seem to not
cause confusion.  I can design data structure without
multi-ref.  Name of this project is, RAA XML interface. :)

I choose SOAP when I need user type information and multi-ref.

Hope this helps,
// NaHi


PS. Sample of multi-ref marshalling and unmarshalling in SOAP.

require 'soap/marshal'	# You must install SOAP4R and (NQXML or XMLParser)

class Node; include SOAP::Marshallable
  attr_reader :first, :second

  def initialize( *initNext )
    @first = initNext[0]
    @second = initNext[1]
  end
end

n9 = Node.new
n81 = Node.new( n9 )
n82 = Node.new( n9 )
n7 = Node.new( n81, n82 )
n61 = Node.new( n7 )
n62 = Node.new( n7 )
n5 = Node.new( n61, n62 )
n41 = Node.new( n5 )
n42 = Node.new( n5 )
n3 = Node.new( n41, n42 )
n21 = Node.new( n3 )
n22 = Node.new( n3 )
n1 = Node.new( n21, n22 )

marshalledString = SOAP::Marshal.marshal( n1 )
clonedNode = SOAP::Marshal.unmarshal( marshalledString )
p clonedNode.first.first.__id__
p clonedNode.second.first.__id__