[OASIS Issue Tracker] (ODATA-1427) Clarify treatment of duplicates in OData-Aggr example 7

[OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>]

Heiko Theissen created ODATA-1427:
-------------------------------------

             Summary: Clarify treatment of duplicates in OData-Aggr example 7
                 Key: ODATA-1427
                 URL: https://issues.oasis-open.org/browse/ODATA-1427
             Project: OASIS Open Data Protocol (OData) TC
          Issue Type: Improvement
          Components: Data Aggregation
            Reporter: Heiko Theissen


Example 7 in the [{{aggregate ... as}} specification|http://docs.oasis-open.org/odata/odata-data-aggregation-ext/v4.0/cs02/odata-data-aggregation-ext-v4.0-cs02.html#_Toc435016569] leaves unclear whether entities that are reachable via more than one instance path are considered once during aggregation or as often as they are reachable.

Does
{code}
GET CainAndAbel?$apply=aggregate(Parents($count as c))
{code}
count Adam and Eve once or twice (https://www.bibleserver.com/KJV/Genesis4)? Is the result
{code}
"Parents": [{"c": 4}]
{code}
or
{code}
"Parents": [{"c": 2}]
{code}
?



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