[OASIS Issue Tracker] Updated: (ODATA-280) Support cast segment in $expand

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

     [ http://tools.oasis-open.org/issues/browse/ODATA-280?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefan Drees updated ODATA-280:
-------------------------------

    Resolution: 
https://www.oasis-open.org/committees/download.php/48527/odata-core-v4.0-wd01-part2-url-conventions-2013-03-12.doc
https://tools.oasis-open.org/version-control/browse/wsvn/odata/trunk/spec/ABNF/odata-abnf-construction-rules-v4.0-wd01.txt?rev=211
https://tools.oasis-open.org/version-control/browse/wsvn/odata/trunk/spec/ABNF/odata-abnf-testcases.xml?rev=211

Accepted: https://www.oasis-open.org/committees/download.php/49026/odata-meeting-34_on-20130425_26-F2F-minutes.html#odata-280

  was:
https://www.oasis-open.org/committees/download.php/48527/odata-core-v4.0-wd01-part2-url-conventions-2013-03-12.doc
https://tools.oasis-open.org/version-control/browse/wsvn/odata/trunk/spec/ABNF/odata-abnf-construction-rules-v4.0-wd01.txt?rev=211
https://tools.oasis-open.org/version-control/browse/wsvn/odata/trunk/spec/ABNF/odata-abnf-testcases.xml?rev=211


> Support cast segment in $expand
> -------------------------------
>
>                 Key: ODATA-280
>                 URL: http://tools.oasis-open.org/issues/browse/ODATA-280
>             Project: OASIS Open Data Protocol (OData) TC
>          Issue Type: Improvement
>          Components: OData ABNF Construction Rules, OData Protocol , OData URL Conventions 
>    Affects Versions: V4.0_WD01
>         Environment: [Proposed]
>            Reporter: Michael Pizzo
>            Assignee: Ralf Handl
>             Fix For: V4.0_WD01
>
>
> In ODATA-32 we added the ability to do things like filtered expands. We also support filtering collections by type using a CAST segment, and should do the same for $expanded properties.
> For example; 
>     ~Employees/hr.Managers?$expand=DirectReports
> today returns only those employees that are managers, and their direct reports.
>     ~Employees?$expand=hr.Managers/DirectReports
> today returns all employees and, for those employees that are managers, all of their direct reports.
> We would also support:
>     ~Employees/hr.Managers?$expand=DirectReports/hr.Managers
> to return only employees that were managers, and only those direct reports that were also managers.
> and
>     ~Employees?$expand=hr.Managers/DirectReports/hr.Managers
> to return all employees and, for each employee that was a manager, only those direct reports that were also managers.

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