[OASIS Issue Tracker] Commented: (ODATA-177) Allow entities to be members of multiple entity sets

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    [ http://tools.oasis-open.org/issues/browse/ODATA-177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=31817#action_31817 ] 

Ralf Handl commented on ODATA-177:
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Ok, try this one: a CRM service provides a Customers entity set, and a MyCustomers "view" which contains the customers for which the authenticated employee is responsible.

Ideally both sets would behave in the same way. 

Currently I'm forced to model one of them as a second-class citizen called FunctionImport, limiting its consumption to read-only access, with the added hazard that not all tools on the targeted client platforms will support them equally well.

> Allow entities to be members of multiple entity sets
> ----------------------------------------------------
>
>                 Key: ODATA-177
>                 URL: http://tools.oasis-open.org/issues/browse/ODATA-177
>             Project: OASIS Open Data Protocol (OData) TC
>          Issue Type: Improvement
>          Components: OData Protocol v1.0
>    Affects Versions: WD01
>         Environment: [Proposed]
>            Reporter: Ralf Handl
>             Fix For: WD01
>
>
> Section 3 currently states that an entity can be a member of at most one entity set. Given the ability to model entity type hierarchies this restriction seems rather unnatural: "Manager" is a specialization of "Employee", so it seems natural to have two entity sets "Managers" and "Employees", the former being a true subset of the latter, and a new "Manager" entity, POSTed to either set, would automatically appear in both.
> Currently the only way to do that is to have an "Employees" entity set and a "Managers" function, with the drawback that the function is not advertised in the service document and thus not consumable in a hypermedia fashion.

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