[OASIS Issue Tracker] (ODATA-1043) Clean up context URL syntax

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

    [ https://issues.oasis-open.org/browse/ODATA-1043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=65566#comment-65566 ] 

Ralf Handl commented on ODATA-1043:
-----------------------------------

Current rules for context URL and other parts of the response make the response body "self-contained", so e.g. navigation links can be constructed without having to know the request URL that produced that response.

Relaxing this could be achieved via a preference or format parameter.

> Clean up context URL syntax
> ---------------------------
>
>                 Key: ODATA-1043
>                 URL: https://issues.oasis-open.org/browse/ODATA-1043
>             Project: OASIS Open Data Protocol (OData) TC
>          Issue Type: Bug
>          Components: Protocol
>    Affects Versions: V4.01_CSD01
>         Environment: Proposed
>            Reporter: Ralf Handl
>             Fix For: V4.01_CSD02
>
>
> 1) Chapter 10 states: The context URL describes the content of the payload. It consists of the canonical metadata document URL and a fragment *identifying the relevant portion of the metadata document.*
> This is somewhat violated by context urls using the template variable {entity} whose value is the canonical URL of an entity, including its key values - the key values aren't needed to identify the relevant portion of the metadata document, for this purpose the type is sufficient.
> 2) Chapter 10 states: Request payloads generally do not require context URLs as the type of the payload can generally be determined from the request URL.
> Can we have the same for response payloads? Most responses for requests to entity sets or singletons using canonical URLs would not need a context URL, same for navigation paths with a navigation property binding. Instances with a type derived from the declared type carry the @odata.type annotation, so even those don't need a context URL. Same for responses to actions/functions with an EntitySetPath, or action/function imports with a an EntitySet.



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