Fwd: [odata-comment] Specification of $count for "Delta Responses"

[Stefan Drees <stefan@drees.name>]

We received the first public comment during CSD01 Public Review.

The below comment archived at mailing list archive URL 
https://lists.oasis-open.org/archives/odata-comment/201305/msg00000.html 
has been registered as public comment with id c201305e00000 (procedure 
as described at eg. 
https://www.oasis-open.org/committees/download.php/48109/formal-aspects-meeting-minutes-v1.html#pcnotation).

Please refer to it by citing it's mailing list archive URL or
the id:
	c201305e00000

PS: I hereby suggest to add this to the agenda of tomorrow's call after 
the action item handling and before the usual processing of issues. What 
do you think?

All the best,
Stefan.


-------- Original-Nachricht --------
Betreff: [odata-comment] Specification of $count for "Delta Responses"
Datum: Wed, 8 May 2013 16:17:09 +0000
Von: Degenkolb, Marko <marko.degenkolb@sap.com>
An: odata-comment@lists.oasis-open.org <odata-comment@lists.oasis-open.org>

Reading the new specification of "Delta Responses" 
(http://docs.oasis-open.org/odata/odata-json-format/v4.0/csprd01/odata-json-format-v4.0-csprd01.zip 
=> odata-json-format-v4.0-csprd01.pdf => chapter 14) I have two comments:

1) The way how the $count behavior is defined seems inconsistent with 
the behavior of $count on "normal" EntitySets. There, $count returns the 
number of instances in the specified EntitySet. That means, for example, 
that if $count returns 0 a GET without $count returns an empty feed. 
With the current specification - not counting added or deleted links - 
this coherence does not apply anymore.

2) The specification is not clear whether 'the returned count is the 
count of added, changed, or deleted entities' includes "expanded" 
entities or not. In the example you mention this would mean: does #4 
count or not? In other words, would $count in this example return 2 or 3?

Many thanks,
Marko



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