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Subject: More very interesting $has-related questions
- From: Drummond Reed <drummond.reed@xdi.org>
- To: OASIS - XDI TC <xdi@lists.oasis-open.org>
- Date: Thu, 1 Apr 2010 01:37:40 -0700
This is related to the whole question about when/if it matters what $has relationships are expressed as XDI predicates vs. subjects.
Again, this only comes up because we're now saying $has statements can be expressed either way, i.e., =example/+email and =example+email identify the same point in the XDI graph.
So the first question is: does an XDI $get for the XRI =example/$has and and XDI $get for the XRI =example$has return the same results? In other words, are they equivalent statements?
The second question is: if they are equivalent, does that mean that an XDI processor should consider all three of the XDI graphs below equivalent?
#1 FULLY COLLAPSED
=example
$is$a
+person
+email
(/+home+email)
(/+work+email)
+home+email
(/+email$1)
+work+email
(/+email$1)
+email$1
“example@example.com”
#2 ALL BUT LAST SUBSEGMENT COLLAPSED
=example
$is$a
+person
$has
+home
+work
+email
=example+home
+email
(=example+email/$1)
=example+work
+email
(=example+email/$1)
=example+email
$1
“example@example.com”
#3 FULLY EXPANDED
=example
$is$a
+person
$has
+home+email
+work+email
+email$1
=example+home+email
$is
=example+email$1
=example+work+email
$is
=example+email$1
=example+email$1
$value
“example@example.com”
*********************
Again, this will make for fascinating discussion on tomorrow's call.
=Drummond
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