odata message

Subject: [OASIS Issue Tracker] Created: (ODATA-320) Should use /@<annotation-name> to reference applied annotations

From: OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>
To: odata@lists.oasis-open.org
Date: Fri, 22 Mar 2013 17:02:50 -0400 (EDT)

Should use /@<annotation-name> to reference applied annotations
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                 Key: ODATA-320
                 URL: http://tools.oasis-open.org/issues/browse/ODATA-320
             Project: OASIS Open Data Protocol (OData) TC
          Issue Type: Bug
          Components: OData CSDL
    Affects Versions: V4.0_WD01
         Environment: [Proposed]
            Reporter: Michael Pizzo


We recently added the ability to reference the annotation applied to model element by specifying the element followed by "@" and the fully qualified name of the annotation.

As described in reviewing the application of the change, we chose "@" in applying the change primarily because it allowed the client to more easily differentiate whether the applied cast was to a type or an annotation term.

However, by using "@" instead of "/", as originally proposed, we lost the ability to identify the different segments of the expression by splitting on "/". Referencing the applied annotation really is properly a different segment and should be separated by "@".

SO the proposal is to restore the "/" to rightly indicate a separate path segment, but to keep the "@" as a prefix to the annotation in order to more easily differentiate it as an annotation term.

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