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Subject: RE: Terminology for "owned data"
The problem I see here is that the three use cases you mentioned all have different distinctions:
I donât see one new âterminology termâ that can explain all three of them, we probably need at least three new pieces of terminology. From: Christof Sprenger <chrispre@microsoft.com>
Thanks George, Yes, definitely helpful. My goal with the discussion I want to have is to actually agree on something like what you wrote about composition. But more importantly to give it a name so that we donât always have to explain when some feature/operation/capability applies (or can be applied) and when not (e.g. when deep insert works, when an aggregation function
can be used, when a context url is a path vs a type, â ). Christof From: Ericson, George <George.Ericson@dell.com>
Some thoughts on this topic.
UML defines AggregationKind='composite' as an indication that a
Property is aggregated compositely, i.e., the composite object has responsibility for the existence and storage of the composed objects.
Hope some of that is helpful, George From:
odata@lists.oasis-open.org <odata@lists.oasis-open.org>
On Behalf Of Christof Sprenger [EXTERNAL EMAIL] Hello, Wasnât sure how to frame the following as an Issue, so I am starting with an email.
In recent TC meetings and in my day job we often need to distinguish between different paths/URLS and if they are returning something contained or not. We had the discussion a few times during the review of aggregation,
and I had to go into it internally to discuss deep inserts. The closest I could find is in
10.2 Collection
of Entities [docs.oasis-open.org]. There is the distinction between contained Entities and âothersâ. But a) the description for âothersâ is quite lengthy and it is not clear that this covers all the other cases b) it is the first time in that document
that the phrase ââ entities are containedâ is actually used, c) this only addresses collection of Entities and sections 10.3-10.15 have
to essentially make similar statements or refer to 10.2. 4.3.2 Canonical
URL for Contained Entities [docs.oasis-open.org] also mentions quote: â[â] contained entities (i.e. related via a containment navigation property
[â]â . It feels weird that the phrase âcontained entitiesâ is previously not mentioned and quickly defined in the spot (in parenthesis, without mentioning a path of containment navigation property)
I hope that such a definition would help with describing and discussing many problems but I am not really able (as you can see above) to get to a crisp definition. Have I overlooked that kind of definition ? If not, can/should this be a topic for the TC? Christof |
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