[OASIS Issue Tracker] (ODATA-638) Clarify Delta responses with Minimal Metadata

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

Michael Pizzo created ODATA-638:
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             Summary: Clarify Delta responses with Minimal Metadata
                 Key: ODATA-638
                 URL: https://tools.oasis-open.org/issues/browse/ODATA-638
             Project: OASIS Open Data Protocol (OData) TC
          Issue Type: Bug
          Components: OData Extension for JSON Data 
    Affects Versions: V4.0_OS
         Environment: [Proposed]
            Reporter: Michael Pizzo
             Fix For: V4.0_ERRATA01


Within a delta response, @odata.context is used to convey that a link has been added, or that a link or entity has been deleted, and @odata.id is used to convey id of an added or updated entry.

In minimal metadata, we say that data that can be computed on the client can be omitted. Clearly the context url is still required for added links, deleted links, and deleted entries, as well as added/updated entities from sets other than indicated by the response context url as that cannot be computed from the payload. the id may be computed from the payload only if the payload contains the id fields, and since a service is allowed to return only changed fields then it must also include the id for added/updated entities, even in minimal metadata. same is true for @odata.deltaLink on the last page of the response for retrieving additional changes.



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