Re: Rep (2) : QUIPU vs X.500 (was: A tool for...)

[Colin Robbins <[e-mail]>]

   >			  /
   >			 /
   >			A
   >		      /   \
   >		     /     \
   >		   S1       S2
   >		  / \      /  \
   >		 /   \
   >	       S11    S12
   >	     /  |  \   | \
   >	    /   |   \
   >
   >   I have an entry A with 2 subordinates (also subtrees) managed by DSA DS0
   >   I need to have subtree  S1  (with S11, S12 ...) managed by a different
   >	DSA  DS1 than the one holding A
   >   Same requirement for subtree S2 and DS2
   >
   >   If DS0 is a non-QUIPU, DS0 
   >       considers that S1 is mastered by DS1 (S2 by DS2)
   >       and optionaly may hold a slave copy of S1
   >    If DS1 is a non-QUIPU then no problem
   >    If DS1 is a QUIPU, DS1 believes that the master entry for S1 it holds
   >	is a copy, and that DS0 holds the master.
   >	-> there is no master for this entry S1!!!
   >
   >     [[ Here come my statement: this QUIPU insists on thinking that
   >	the entry S1 (relative root of this subtree) is held by
   >	another DSA: DS0]]
   >
   >   Conversely
   >	If DS0 is a QUIPU
   >		DS0 has to pretend to master entry S2 
   >        while it is in fact mastered by DS2 if DS2 is a non-QUIPU
   >	-> we have 2 masters for entry S2!!!
   >

Thanks for this clarification Paul.  This is indeed the case I though you were
referring to.  I will confirm that in my book this is simply a bug
in QUIPU, it is not a major architecture problem.  I am working on a fix,
as you know, I have already given the OFIP an attempted fix, but this did 
not seem to resolve the problem

   >   is NOT able to interwork properly when chaining is not used
   >	and references are returned. It seems that QUIPU, at best,
   >	implements only part of the reference types proposed by the standard.
   >	(BUT I repeat this is an assumption based on logs and PDU analysis, not
   >	on any knowledge of QUIPU internals and architecture)

QUIPU should be able to generate a reference of any type you require.
By default subordinate references are used, but NSSRs can be generated if need be,
however, QUIPU will not use NSSRs itself, but simply pass them to the requestor
in a reference.
Cross references can also be generated (and used) if need be.

Colin