[OASIS Issue Tracker] (ODATA-1472) Clarify: PATCH should allow changing type on nested complex type

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

Michael Pizzo created ODATA-1472:
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             Summary: Clarify: PATCH should allow changing type on nested complex type
                 Key: ODATA-1472
                 URL: https://issues.oasis-open.org/browse/ODATA-1472
             Project: OASIS Open Data Protocol (OData) TC
          Issue Type: New Feature
          Components: Protocol
    Affects Versions: V4.01_OS
         Environment: Proposed
            Reporter: Michael Pizzo
             Fix For: V4.01_ERRATA01


We say that a PATCH request to an entity with a complex type in the payload also patches the nested complex type (i.e., it only affects the properties specified in the request).

We don't say whether or not the PATCH request can change the complex type of the nested property.

While changing the type of an entity should not be allowed (and is, in fact, explicitly prohibited) because entities define an *instance*, the type of a complex-typed property should be able to be changed in a PATCH request by specifying a new complex type (i.e., @odata.type) in the payload.



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